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Failing to retry download or try next format on "Did not get any data blocks" error #18543

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opened 2026-02-21 10:10:34 -05:00 by deekerman · 8 comments

deekerman commented

2026-02-21 10:10:34 -05:00

Owner

Originally created by @dbr on GitHub (Nov 16, 2019).

Checklist

I'm reporting a broken site support issue
I've verified that I'm running youtube-dl version 2019.11.05
I've checked that all provided URLs are alive and playable in a browser
I've checked that all URLs and arguments with special characters are properly quoted or escaped
I've searched the bugtracker for similar bug reports including closed ones
I've read bugs section in FAQ

Verbose log

$ youtube-dl --verbose -f 22/best 'http://youtube.com/watch?v=Msn9L0IXPgw'
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '-f', '22/best', 'http://youtube.com/watch?v=Msn9L0IXPgw']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.11.05
[debug] Python version 3.7.4 (CPython) - Darwin-18.7.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 4.0.2, ffprobe 4.0.2
[debug] Proxy map: {}
[youtube] Msn9L0IXPgw: Downloading webpage
[youtube] Msn9L0IXPgw: Downloading video info webpage
[youtube] {18} signature length 104, html5 player vflFlp-mq
[youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflFlp-mq/en_US/base.js
[youtube] {22} signature length 104, html5 player vflFlp-mq
[youtube] {43} signature length 104, html5 player vflFlp-mq
[youtube] {313} signature length 104, html5 player vflFlp-mq
[youtube] {271} signature length 104, html5 player vflFlp-mq
[youtube] {137} signature length 104, html5 player vflFlp-mq
[youtube] {248} signature length 104, html5 player vflFlp-mq
[youtube] {136} signature length 100, html5 player vflFlp-mq
[youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflFlp-mq/en_US/base.js
[youtube] {247} signature length 104, html5 player vflFlp-mq
[youtube] {135} signature length 104, html5 player vflFlp-mq
[youtube] {244} signature length 104, html5 player vflFlp-mq
[youtube] {134} signature length 104, html5 player vflFlp-mq
[youtube] {243} signature length 104, html5 player vflFlp-mq
[youtube] {133} signature length 104, html5 player vflFlp-mq
[youtube] {242} signature length 104, html5 player vflFlp-mq
[youtube] {160} signature length 100, html5 player vflFlp-mq
[youtube] {278} signature length 100, html5 player vflFlp-mq
[youtube] {140} signature length 100, html5 player vflFlp-mq
[youtube] {249} signature length 104, html5 player vflFlp-mq
[youtube] {250} signature length 104, html5 player vflFlp-mq
[youtube] {251} signature length 104, html5 player vflFlp-mq
[debug] Invoking downloader on 'https://r5---sn-u2bpouxgoxu-5qal.googlevideo.com/videoplayback?expire=1573901343&ei=v3_PXbG2L9uN3LUPm9O44Ac&ip=124.168.216.76&id=o-AMX8d-vP-bCczOwjEQSlnuJLnzWnz6SWtK7KC449kC4f&itag=22&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-u2bpouxgoxu-5qal%2Csn-ntqe6n7r&ms=au%2Crdu&mv=m&mvi=4&pl=21&initcwndbps=1237500&mime=video%2Fmp4&ratebypass=yes&dur=235.241&lmt=1569437714851264&mt=1573879663&fvip=5&fexp=23842630&beids=9466585&c=WEB&txp=2316222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRAIgds4ItG2cSzxz3rBZ8XJbNIbSJwB4TrqTUlVJAEvzZisCIFjeNldL0kpo7BtoGtfgV1A428l-J1XxR_OlqlTYUkIF&sig=ALgxI2wwRgIhAKXV-eQbHZpt0mMcFLF3G3QUoJ4ihutHi9g9gOptjBRyAiEAr4McLw2mFeR1oU_-270t3HdxOafLf4JdJt8zp4VPkm0='
[download] Destination: Carlo Traversi... SENDING in RMNP-Msn9L0IXPgw.mp4
[download]   0.2% of 41.69MiB at 689.91KiB/s ETA 01:01[download] Got server HTTP error: Downloaded 88699 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)...


ERROR: Did not get any data blocks
  File "/Users/dbr/code/venvs/ytdl/bin/youtube-dl", line 8, in <module>
    sys.exit(main())
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/__init__.py", line 474, in main
    _real_main(argv)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/__init__.py", line 464, in _real_main
    retcode = ydl.download(all_urls)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 2018, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 807, in extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 862, in process_ie_result
    return self.process_video_result(ie_result, download=download)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1643, in process_video_result
    self.process_info(new_info)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1925, in process_info
    success = dl(filename, info_dict)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1864, in dl
    return fd.download(name, info)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/common.py", line 366, in download
    return self.real_download(filename, info_dict)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/http.py", line 342, in real_download
    return download()
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/http.py", line 312, in download
    self.report_error('Did not get any data blocks')
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/common.py", line 165, in report_error
    self.ydl.report_error(*args, **kargs)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 624, in report_error
    self.trouble(error_message, tb)
  File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 586, in trouble
    tb_data = traceback.format_list(traceback.extract_stack())

Description

I'm using youtube-dl to download videos as 720p mp4a (-f 22). As per issues like #17148 and #20296 this is apparently an issue with Youtube, and as of the last few months(?) I often get downloads failing with the Did not get any data blocks.

So as a solution to this I tried using the format fallback mechanism and specifying -f 22/best (as per the format section docs and this very old bug #650), so it'll prefer the mp4a then fallback to to the default format. However this doesn't work - youtube-dl stops after the first error occurs:

$ youtube-dl -f 22/best 'http://youtube.com/watch?v=Msn9L0IXPgw'
[...]
[download]   0.2% of 41.69MiB at 122.11KiB/s ETA 05:48[download] Got server HTTP error: Downloaded 88699 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)...


ERROR: Did not get any data blocks
$

Although it would be useful in my case, I'm not certain if it would be correct for the "no data blocks" error to try the next format (since I assume Youtube API claims the format does exist), however the output saying "Retrying (attempt 1 of 10)" but it immediately exiting definitely seems like a bug?

Originally created by @dbr on GitHub (Nov 16, 2019).  ## Checklist  - [x] I'm reporting a broken site support issue - [x] I've verified that I'm running youtube-dl version **2019.11.05** - [x] I've checked that all provided URLs are alive and playable in a browser - [x] I've checked that all URLs and arguments with special characters are properly quoted or escaped - [x] I've searched the bugtracker for similar bug reports including closed ones - [x] I've read bugs section in FAQ ## Verbose log  ``` $ youtube-dl --verbose -f 22/best 'http://youtube.com/watch?v=Msn9L0IXPgw' [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: ['--verbose', '-f', '22/best', 'http://youtube.com/watch?v=Msn9L0IXPgw'] [debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8 [debug] youtube-dl version 2019.11.05 [debug] Python version 3.7.4 (CPython) - Darwin-18.7.0-x86_64-i386-64bit [debug] exe versions: ffmpeg 4.0.2, ffprobe 4.0.2 [debug] Proxy map: {} [youtube] Msn9L0IXPgw: Downloading webpage [youtube] Msn9L0IXPgw: Downloading video info webpage [youtube] {18} signature length 104, html5 player vflFlp-mq [youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflFlp-mq/en_US/base.js [youtube] {22} signature length 104, html5 player vflFlp-mq [youtube] {43} signature length 104, html5 player vflFlp-mq [youtube] {313} signature length 104, html5 player vflFlp-mq [youtube] {271} signature length 104, html5 player vflFlp-mq [youtube] {137} signature length 104, html5 player vflFlp-mq [youtube] {248} signature length 104, html5 player vflFlp-mq [youtube] {136} signature length 100, html5 player vflFlp-mq [youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflFlp-mq/en_US/base.js [youtube] {247} signature length 104, html5 player vflFlp-mq [youtube] {135} signature length 104, html5 player vflFlp-mq [youtube] {244} signature length 104, html5 player vflFlp-mq [youtube] {134} signature length 104, html5 player vflFlp-mq [youtube] {243} signature length 104, html5 player vflFlp-mq [youtube] {133} signature length 104, html5 player vflFlp-mq [youtube] {242} signature length 104, html5 player vflFlp-mq [youtube] {160} signature length 100, html5 player vflFlp-mq [youtube] {278} signature length 100, html5 player vflFlp-mq [youtube] {140} signature length 100, html5 player vflFlp-mq [youtube] {249} signature length 104, html5 player vflFlp-mq [youtube] {250} signature length 104, html5 player vflFlp-mq [youtube] {251} signature length 104, html5 player vflFlp-mq [debug] Invoking downloader on 'https://r5---sn-u2bpouxgoxu-5qal.googlevideo.com/videoplayback?expire=1573901343&ei=v3_PXbG2L9uN3LUPm9O44Ac&ip=124.168.216.76&id=o-AMX8d-vP-bCczOwjEQSlnuJLnzWnz6SWtK7KC449kC4f&itag=22&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-u2bpouxgoxu-5qal%2Csn-ntqe6n7r&ms=au%2Crdu&mv=m&mvi=4&pl=21&initcwndbps=1237500&mime=video%2Fmp4&ratebypass=yes&dur=235.241&lmt=1569437714851264&mt=1573879663&fvip=5&fexp=23842630&beids=9466585&c=WEB&txp=2316222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRAIgds4ItG2cSzxz3rBZ8XJbNIbSJwB4TrqTUlVJAEvzZisCIFjeNldL0kpo7BtoGtfgV1A428l-J1XxR_OlqlTYUkIF&sig=ALgxI2wwRgIhAKXV-eQbHZpt0mMcFLF3G3QUoJ4ihutHi9g9gOptjBRyAiEAr4McLw2mFeR1oU_-270t3HdxOafLf4JdJt8zp4VPkm0=' [download] Destination: Carlo Traversi... SENDING in RMNP-Msn9L0IXPgw.mp4 [download] 0.2% of 41.69MiB at 689.91KiB/s ETA 01:01[download] Got server HTTP error: Downloaded 88699 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)... ERROR: Did not get any data blocks File "/Users/dbr/code/venvs/ytdl/bin/youtube-dl", line 8, in <module> sys.exit(main()) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/__init__.py", line 474, in main _real_main(argv) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/__init__.py", line 464, in _real_main retcode = ydl.download(all_urls) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 2018, in download url, force_generic_extractor=self.params.get('force_generic_extractor', False)) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 807, in extract_info return self.process_ie_result(ie_result, download, extra_info) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 862, in process_ie_result return self.process_video_result(ie_result, download=download) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1643, in process_video_result self.process_info(new_info) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1925, in process_info success = dl(filename, info_dict) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 1864, in dl return fd.download(name, info) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/common.py", line 366, in download return self.real_download(filename, info_dict) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/http.py", line 342, in real_download return download() File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/http.py", line 312, in download self.report_error('Did not get any data blocks') File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/downloader/common.py", line 165, in report_error self.ydl.report_error(*args, **kargs) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 624, in report_error self.trouble(error_message, tb) File "/Users/dbr/code/venvs/ytdl/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 586, in trouble tb_data = traceback.format_list(traceback.extract_stack()) ``` ## Description  I'm using youtube-dl to download videos as 720p mp4a (`-f 22`). As per issues like #17148 and #20296 this is apparently an issue with Youtube, and as of the last few months(?) I often get downloads failing with the `Did not get any data blocks`. So as a solution to this I tried using the format fallback mechanism and specifying `-f 22/best` (as per the [format section docs](https://github.com/ytdl-org/youtube-dl/blob/master/README.md#format-selection) and this very old bug #650), so it'll prefer the mp4a then fallback to to the default format. However this doesn't work - youtube-dl stops after the first error occurs: ``` $ youtube-dl -f 22/best 'http://youtube.com/watch?v=Msn9L0IXPgw' [...] [download] 0.2% of 41.69MiB at 122.11KiB/s ETA 05:48[download] Got server HTTP error: Downloaded 88699 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)... ERROR: Did not get any data blocks $ ``` Although it would be useful in my case, I'm not certain if it would be correct for the "no data blocks" error to try the next format (since I assume Youtube API claims the format *does* exist), however the output saying "Retrying (attempt 1 of 10)" but it immediately exiting definitely seems like a bug?

deekerman added the

cant-reproduce

label

2026-02-21 10:10:34 -05:00

deekerman commented

2026-02-21 10:10:36 -05:00

Author

Owner

@redmaw commented on GitHub (Nov 23, 2019):

This reproduces for me as well on 2/3 youtube links I tried. The two below fail with this error signature; the third failed with a different error.

https://www.youtube.com/watch?v=vJ290qlAbbw&list=PLHTh1InhhwT6KhvViwRiTR7I5s09dLCSw&index=7
https://www.youtube.com/watch?v=v_yzLe-wnfk&list=PLHTh1InhhwT6KhvViwRiTR7I5s09dLCSw&index=46

 ./youtube-dl -v http://youtube.com/watch?v=Msn9L0IXPgw
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'http://youtube.com/watch?v=Msn9L0IXPgw']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.11.22
[debug] Python version 3.7.5 (CPython) - Linux-5.3.11-300.fc31.x86_64-x86_64-with-fedora-31-Thirty_One
[debug] exe versions: none
[debug] Proxy map: {}
[youtube] Msn9L0IXPgw: Downloading webpage
[youtube] Msn9L0IXPgw: Downloading video info webpage
[youtube] {18} signature length 105, html5 player vflaU3CuL
[youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflaU3CuL/en_US/base.js
[youtube] {22} signature length 105, html5 player vflaU3CuL
[youtube] {43} signature length 105, html5 player vflaU3CuL
[youtube] {313} signature length 109, html5 player vflaU3CuL
[youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflaU3CuL/en_US/base.js
[youtube] {271} signature length 109, html5 player vflaU3CuL
[youtube] {137} signature length 109, html5 player vflaU3CuL
[youtube] {248} signature length 109, html5 player vflaU3CuL
[youtube] {136} signature length 109, html5 player vflaU3CuL
[youtube] {247} signature length 109, html5 player vflaU3CuL
[youtube] {135} signature length 105, html5 player vflaU3CuL
[youtube] {244} signature length 109, html5 player vflaU3CuL
[youtube] {134} signature length 109, html5 player vflaU3CuL
[youtube] {243} signature length 109, html5 player vflaU3CuL
[youtube] {133} signature length 109, html5 player vflaU3CuL
[youtube] {242} signature length 105, html5 player vflaU3CuL
[youtube] {160} signature length 109, html5 player vflaU3CuL
[youtube] {278} signature length 109, html5 player vflaU3CuL
[youtube] {140} signature length 105, html5 player vflaU3CuL
[youtube] {249} signature length 105, html5 player vflaU3CuL
[youtube] {250} signature length 109, html5 player vflaU3CuL
[youtube] {251} signature length 105, html5 player vflaU3CuL
[debug] Default format spec: best/bestvideo+bestaudio
[debug] Invoking downloader on 'https://r5---sn-n4v7knls.googlevideo.com/videoplayback?expire=1574575995&ei=G8vZXazdA83DkgaBi4TgAQ&ip=71.197.126.65&id=o-ACUbHulhlAOJrAJFdpltfpwY_8zgfXRYtlvPUj8T4fVj&itag=22&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-n4v7knls%2Csn-n4v7snee&ms=au%2Crdu&mv=m&mvi=4&pl=18&initcwndbps=2135000&mime=video%2Fmp4&ratebypass=yes&dur=235.241&lmt=1569437714851264&mt=1574554274&fvip=5&fexp=23842630&c=WEB&txp=2316222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRQIhAOh0w7OmvU_F_nR0VlvCaI7pAnFk5Aed0En1Mrnn0KuFAiA-918d3AY_OVCmL9DHTQdMhqq9HE3kzC4PuDH1KNwoCg%3D%3D&sig=ALgxI2wwRAIgDEJIHKkwx8A066thywOGZTTaPqMRi9zR_NK7Uk8XhUACIGk2CpYj_KzNRhdtAadzEGa9U7bZahCbh4QthTcg3NQj'
[download] Destination: Carlo Traversi... SENDING in RMNP-Msn9L0IXPgw.mp4
[download]   0.2% of 41.69MiB at 405.94KiB/s ETA 01:44[download] Got server HTTP error: Downloaded 85837 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)...


ERROR: Did not get any data blocks
  File "/usr/lib64/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib64/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "./youtube-dl/__main__.py", line 19, in <module>
    youtube_dl.main()
  File "./youtube-dl/youtube_dl/__init__.py", line 474, in main
    _real_main(argv)
  File "./youtube-dl/youtube_dl/__init__.py", line 464, in _real_main
    retcode = ydl.download(all_urls)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 2018, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 807, in extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 862, in process_ie_result
    return self.process_video_result(ie_result, download=download)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1643, in process_video_result
    self.process_info(new_info)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1925, in process_info
    success = dl(filename, info_dict)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1864, in dl
    return fd.download(name, info)
  File "./youtube-dl/youtube_dl/downloader/common.py", line 366, in download
    return self.real_download(filename, info_dict)
  File "./youtube-dl/youtube_dl/downloader/http.py", line 342, in real_download
    return download()
  File "./youtube-dl/youtube_dl/downloader/http.py", line 312, in download
    self.report_error('Did not get any data blocks')
  File "./youtube-dl/youtube_dl/downloader/common.py", line 165, in report_error
    self.ydl.report_error(*args, **kargs)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 624, in report_error
    self.trouble(error_message, tb)
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 586, in trouble
    tb_data = traceback.format_list(traceback.extract_stack())

@redmaw commented on GitHub (Nov 23, 2019): This reproduces for me as well on 2/3 youtube links I tried. The two below fail with this error signature; the third failed with a different error. https://www.youtube.com/watch?v=vJ290qlAbbw&list=PLHTh1InhhwT6KhvViwRiTR7I5s09dLCSw&index=7 https://www.youtube.com/watch?v=v_yzLe-wnfk&list=PLHTh1InhhwT6KhvViwRiTR7I5s09dLCSw&index=46 ``` ./youtube-dl -v http://youtube.com/watch?v=Msn9L0IXPgw [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: ['-v', 'http://youtube.com/watch?v=Msn9L0IXPgw'] [debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8 [debug] youtube-dl version 2019.11.22 [debug] Python version 3.7.5 (CPython) - Linux-5.3.11-300.fc31.x86_64-x86_64-with-fedora-31-Thirty_One [debug] exe versions: none [debug] Proxy map: {} [youtube] Msn9L0IXPgw: Downloading webpage [youtube] Msn9L0IXPgw: Downloading video info webpage [youtube] {18} signature length 105, html5 player vflaU3CuL [youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflaU3CuL/en_US/base.js [youtube] {22} signature length 105, html5 player vflaU3CuL [youtube] {43} signature length 105, html5 player vflaU3CuL [youtube] {313} signature length 109, html5 player vflaU3CuL [youtube] Msn9L0IXPgw: Downloading player https://www.youtube.com/yts/jsbin/player_ias-vflaU3CuL/en_US/base.js [youtube] {271} signature length 109, html5 player vflaU3CuL [youtube] {137} signature length 109, html5 player vflaU3CuL [youtube] {248} signature length 109, html5 player vflaU3CuL [youtube] {136} signature length 109, html5 player vflaU3CuL [youtube] {247} signature length 109, html5 player vflaU3CuL [youtube] {135} signature length 105, html5 player vflaU3CuL [youtube] {244} signature length 109, html5 player vflaU3CuL [youtube] {134} signature length 109, html5 player vflaU3CuL [youtube] {243} signature length 109, html5 player vflaU3CuL [youtube] {133} signature length 109, html5 player vflaU3CuL [youtube] {242} signature length 105, html5 player vflaU3CuL [youtube] {160} signature length 109, html5 player vflaU3CuL [youtube] {278} signature length 109, html5 player vflaU3CuL [youtube] {140} signature length 105, html5 player vflaU3CuL [youtube] {249} signature length 105, html5 player vflaU3CuL [youtube] {250} signature length 109, html5 player vflaU3CuL [youtube] {251} signature length 105, html5 player vflaU3CuL [debug] Default format spec: best/bestvideo+bestaudio [debug] Invoking downloader on 'https://r5---sn-n4v7knls.googlevideo.com/videoplayback?expire=1574575995&ei=G8vZXazdA83DkgaBi4TgAQ&ip=71.197.126.65&id=o-ACUbHulhlAOJrAJFdpltfpwY_8zgfXRYtlvPUj8T4fVj&itag=22&source=youtube&requiressl=yes&mm=31%2C29&mn=sn-n4v7knls%2Csn-n4v7snee&ms=au%2Crdu&mv=m&mvi=4&pl=18&initcwndbps=2135000&mime=video%2Fmp4&ratebypass=yes&dur=235.241&lmt=1569437714851264&mt=1574554274&fvip=5&fexp=23842630&c=WEB&txp=2316222&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRQIhAOh0w7OmvU_F_nR0VlvCaI7pAnFk5Aed0En1Mrnn0KuFAiA-918d3AY_OVCmL9DHTQdMhqq9HE3kzC4PuDH1KNwoCg%3D%3D&sig=ALgxI2wwRAIgDEJIHKkwx8A066thywOGZTTaPqMRi9zR_NK7Uk8XhUACIGk2CpYj_KzNRhdtAadzEGa9U7bZahCbh4QthTcg3NQj' [download] Destination: Carlo Traversi... SENDING in RMNP-Msn9L0IXPgw.mp4 [download] 0.2% of 41.69MiB at 405.94KiB/s ETA 01:44[download] Got server HTTP error: Downloaded 85837 bytes, expected 43715037 bytes. Retrying (attempt 1 of 10)... ERROR: Did not get any data blocks File "/usr/lib64/python3.7/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/usr/lib64/python3.7/runpy.py", line 85, in _run_code exec(code, run_globals) File "./youtube-dl/__main__.py", line 19, in <module> youtube_dl.main() File "./youtube-dl/youtube_dl/__init__.py", line 474, in main _real_main(argv) File "./youtube-dl/youtube_dl/__init__.py", line 464, in _real_main retcode = ydl.download(all_urls) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 2018, in download url, force_generic_extractor=self.params.get('force_generic_extractor', False)) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 807, in extract_info return self.process_ie_result(ie_result, download, extra_info) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 862, in process_ie_result return self.process_video_result(ie_result, download=download) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1643, in process_video_result self.process_info(new_info) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1925, in process_info success = dl(filename, info_dict) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 1864, in dl return fd.download(name, info) File "./youtube-dl/youtube_dl/downloader/common.py", line 366, in download return self.real_download(filename, info_dict) File "./youtube-dl/youtube_dl/downloader/http.py", line 342, in real_download return download() File "./youtube-dl/youtube_dl/downloader/http.py", line 312, in download self.report_error('Did not get any data blocks') File "./youtube-dl/youtube_dl/downloader/common.py", line 165, in report_error self.ydl.report_error(*args, **kargs) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 624, in report_error self.trouble(error_message, tb) File "./youtube-dl/youtube_dl/YoutubeDL.py", line 586, in trouble tb_data = traceback.format_list(traceback.extract_stack()) ```

deekerman commented

2026-02-21 10:10:37 -05:00

Author

Owner

@paulcsiki commented on GitHub (Nov 24, 2019):

Same with version 2019.11.22

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', 'D:/YouTube/%(uploader)s/%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=PLV3rF--heRVs5Bz3iD4U5ldG4I3lwiNus', '--playlist-start', '98', '-v']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2019.11.22
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: none
[debug] Proxy map: {}
[youtube:playlist] PLV3rF--heRVs5Bz3iD4U5ldG4I3lwiNus: Downloading webpage
[download] Downloading playlist: Welcome to Factorio
[youtube:playlist] playlist Welcome to Factorio: Downloading 3 videos
[download] Downloading video 1 of 3
[youtube] 8weuztzPrzo: Downloading webpage
[youtube] 8weuztzPrzo: Downloading video info webpage
[debug] Default format spec: best/bestvideo+bestaudio
[debug] Invoking downloader on 'https://r4---sn-q0c7rn76.googlevideo.com/videoplayback?expire=1574614252&ei=i2DaXdbCO8H-xwKEqKyQBA&ip=2a02%3A8084%3A81a2%3A8180%3A3425%3Ad88f%3Aac71%3Affb7&id=o-AMmVS1q6IvoJZtUxu0-MOTAow9g0A6OsKONsp6REv7PU&itag=22&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-q0c7rn76%2Csn-aigzrney&ms=au%2Conr&mv=m&mvi=3&pl=30&initcwndbps=2111250&mime=video%2Fmp4&ratebypass=yes&dur=1877.774&lmt=1559075438973067&mt=1574592549&fvip=6&fexp=23842630&c=WEB&txp=5535432&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&sig=ALgxI2wwRQIgQ3IDDBu-Plrgdrou_uAGE3odQhZSwj9HlFO3TaHsKBQCIQCPRclst6nqgczIoc4LSm0QZQLta3GMmNWUlxw5m8gh3g%3D%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRQIhAIxAXOF6S3LAADiQV5z5o3F4BsVH54g1IVWT4NAA1ONBAiBl2Fi7ZCTDXV4EXOK8O2F-iXxTmlpIL7yDUy3KV8YpNQ%3D%3D'
[download] Resuming download at byte 910231


ERROR: Did not get any data blocks
  File "__main__.py", line 19, in <module>
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\__init__.py", line 474, in main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\__init__.py", line 464, in _real_main
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 2018, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 807, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1007, in process_ie_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 869, in process_ie_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 807, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 862, in process_ie_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1643, in process_video_result
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1925, in process_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1864, in dl
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\common.py", line 366, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\http.py", line 342, in real_download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\http.py", line 312, in download
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\common.py", line 165, in report_error
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 624, in report_error
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 586, in trouble

@paulcsiki commented on GitHub (Nov 24, 2019): Same with version 2019.11.22 ``` [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: ['-o', 'D:/YouTube/%(uploader)s/%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s', 'https://www.youtube.com/playlist?list=PLV3rF--heRVs5Bz3iD4U5ldG4I3lwiNus', '--playlist-start', '98', '-v'] [debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252 [debug] youtube-dl version 2019.11.22 [debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362 [debug] exe versions: none [debug] Proxy map: {} [youtube:playlist] PLV3rF--heRVs5Bz3iD4U5ldG4I3lwiNus: Downloading webpage [download] Downloading playlist: Welcome to Factorio [youtube:playlist] playlist Welcome to Factorio: Downloading 3 videos [download] Downloading video 1 of 3 [youtube] 8weuztzPrzo: Downloading webpage [youtube] 8weuztzPrzo: Downloading video info webpage [debug] Default format spec: best/bestvideo+bestaudio [debug] Invoking downloader on 'https://r4---sn-q0c7rn76.googlevideo.com/videoplayback?expire=1574614252&ei=i2DaXdbCO8H-xwKEqKyQBA&ip=2a02%3A8084%3A81a2%3A8180%3A3425%3Ad88f%3Aac71%3Affb7&id=o-AMmVS1q6IvoJZtUxu0-MOTAow9g0A6OsKONsp6REv7PU&itag=22&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-q0c7rn76%2Csn-aigzrney&ms=au%2Conr&mv=m&mvi=3&pl=30&initcwndbps=2111250&mime=video%2Fmp4&ratebypass=yes&dur=1877.774&lmt=1559075438973067&mt=1574592549&fvip=6&fexp=23842630&c=WEB&txp=5535432&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cratebypass%2Cdur%2Clmt&sig=ALgxI2wwRQIgQ3IDDBu-Plrgdrou_uAGE3odQhZSwj9HlFO3TaHsKBQCIQCPRclst6nqgczIoc4LSm0QZQLta3GMmNWUlxw5m8gh3g%3D%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRQIhAIxAXOF6S3LAADiQV5z5o3F4BsVH54g1IVWT4NAA1ONBAiBl2Fi7ZCTDXV4EXOK8O2F-iXxTmlpIL7yDUy3KV8YpNQ%3D%3D' [download] Resuming download at byte 910231 ERROR: Did not get any data blocks File "__main__.py", line 19, in <module> File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\__init__.py", line 474, in main File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\__init__.py", line 464, in _real_main File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 2018, in download File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 807, in extract_info File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1007, in process_ie_result File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 869, in process_ie_result File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 807, in extract_info File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 862, in process_ie_result File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1643, in process_video_result File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1925, in process_info File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 1864, in dl File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\common.py", line 366, in download File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\http.py", line 342, in real_download File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\http.py", line 312, in download File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\downloader\common.py", line 165, in report_error File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 624, in report_error File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwnp2jh33\build\youtube_dl\YoutubeDL.py", line 586, in trouble ```

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@Ryder17z commented on GitHub (Dec 22, 2019):

I can get the first entry in a playlist, but nothing after that.

2019.11.28 & 2019.8.2 both have the same issue

youtube-dl.exe https://www.youtube.com/playlist?list=PLA5s2n7tXFdsKMUqSfPbKxvk3XwnjCkVC -write-auto-sub -r 30M
[youtube:playlist] PLA5s2n7tXFdsKMUqSfPbKxvk3XwnjCkVC: Downloading webpage
[download] Downloading playlist: Speed Racer
[youtube:playlist] playlist Speed Racer: Downloading 30 videos
[download] Downloading video 1 of 30
[youtube] iGRjwYt08JM: Downloading webpage
[youtube] iGRjwYt08JM: Downloading video info webpage
[youtube] iGRjwYt08JM: Downloading MPD manifest
[download] The New Adventures of Speed Racer _ Episode 001 _ The Mach 5s First Trial-iGRjwYt08JM.mp4 has already been downloaded
[download] 100% of 202.35MiB
[download] Downloading video 2 of 30
[youtube] 9BTAlUvhdkI: Downloading webpage
[youtube] 9BTAlUvhdkI: Downloading video info webpage
[youtube] 9BTAlUvhdkI: Downloading MPD manifest
[download] Resuming download at byte 502620


ERROR: Did not get any data blocks

@Ryder17z commented on GitHub (Dec 22, 2019): I can get the first entry in a playlist, but nothing after that. **2019.11.28 & 2019.8.2** both have the same issue ``` youtube-dl.exe https://www.youtube.com/playlist?list=PLA5s2n7tXFdsKMUqSfPbKxvk3XwnjCkVC -write-auto-sub -r 30M [youtube:playlist] PLA5s2n7tXFdsKMUqSfPbKxvk3XwnjCkVC: Downloading webpage [download] Downloading playlist: Speed Racer [youtube:playlist] playlist Speed Racer: Downloading 30 videos [download] Downloading video 1 of 30 [youtube] iGRjwYt08JM: Downloading webpage [youtube] iGRjwYt08JM: Downloading video info webpage [youtube] iGRjwYt08JM: Downloading MPD manifest [download] The New Adventures of Speed Racer _ Episode 001 _ The Mach 5s First Trial-iGRjwYt08JM.mp4 has already been downloaded [download] 100% of 202.35MiB [download] Downloading video 2 of 30 [youtube] 9BTAlUvhdkI: Downloading webpage [youtube] 9BTAlUvhdkI: Downloading video info webpage [youtube] 9BTAlUvhdkI: Downloading MPD manifest [download] Resuming download at byte 502620 ERROR: Did not get any data blocks ```

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@Tinase-nau commented on GitHub (Dec 29, 2019):

I found my first YT video (twqp9YjfMIw) ever that I'm experiencing the error with. Maybe YT-DL doesn't get some sizes correctly together while doing its sped up download thingy? Maybe YT is testing some sort of anti-ripping mechanism? Or maybe THAT specific format is simply corrupted on the server?
I tried to download the video with 2 other slow speed YT downloaders and they got the video without issues.
I did some testing with hints given by op. Namely with the -f and --list-formats.
YT-DL fails to get 'best'/22/1280x720. But it could download 43/640x360.
My slow downloader downloaded 1920x1080 and AAC audio and merged them.
Taking that as an example I then in YT-DL command line replaced "best" with "bestvideo+bestaudio/best". Noticed that README.md mentions this actually being the default parameter, BUT! ffmpeg has to be present for bestvideo+bestaudio part to trigger. I set all that up. Launched code and it downloaded both besties without issues and muxed them togerher via ffmpeg.

So, what I conclude from my little test:
YT-DL must by default tell user to have ffmpeg setup on system or warn user that otherwise YT-DL will default to parameter for format which YT is trying to abandon.
Or YT-DL should have fails safe mechanism to try for next format that's 2-in-1.
Or figure out what's actually causing this...

@Tinase-nau commented on GitHub (Dec 29, 2019): I found my first YT video (twqp9YjfMIw) ever that I'm experiencing the error with. Maybe YT-DL doesn't get some sizes correctly together while doing its sped up download thingy? Maybe YT is testing some sort of anti-ripping mechanism? Or maybe THAT specific format is simply corrupted on the server? I tried to download the video with 2 other slow speed YT downloaders and they got the video without issues. I did some testing with hints given by op. Namely with the -f and --list-formats. YT-DL fails to get 'best'/22/1280x720. But it could download 43/640x360. My slow downloader downloaded 1920x1080 and AAC audio and merged them. Taking that as an example I then in YT-DL command line replaced "best" with "bestvideo+bestaudio/best". Noticed that README.md mentions this actually being the default parameter, BUT! ffmpeg has to be present for bestvideo+bestaudio part to trigger. I set all that up. Launched code and it downloaded both besties without issues and muxed them togerher via ffmpeg. So, what I conclude from my little test: YT-DL must by default tell user to have ffmpeg setup on system or warn user that otherwise YT-DL will default to parameter for format which YT is trying to abandon. Or YT-DL should have fails safe mechanism to try for next format that's 2-in-1. Or figure out what's actually causing this...

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@Ryder17z commented on GitHub (Dec 29, 2019):

Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work.

@Ryder17z commented on GitHub (Dec 29, 2019): Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work.

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@Tinase-nau commented on GitHub (Dec 30, 2019):

Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work.

Either there are no YT auto generated subs for the video. Or you used -write-auto-sub instead of --write-auto-sub

@Tinase-nau commented on GitHub (Dec 30, 2019): > Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work. Either there are no YT auto generated subs for the video. Or you used `-write-auto-sub` instead of `--write-auto-sub`

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@Ryder17z commented on GitHub (Jan 1, 2020):

Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work.

Either there are no YT auto generated subs for the video. Or you used -write-auto-sub instead of --write-auto-sub

the syntax is correct. but I still don't get subtitles for the playlist.
However, https://sourceforge.net/projects/google2srt/ - this tool did help me get the subtitles.

@Ryder17z commented on GitHub (Jan 1, 2020): > > > > Previous entry by me worked fine the next day, Apart from writing subtitles. I can't get that to work. > > Either there are no YT auto generated subs for the video. Or you used `-write-auto-sub` instead of `--write-auto-sub` the syntax is correct. but I still don't get subtitles for the playlist. However, https://sourceforge.net/projects/google2srt/ - this tool did help me get the subtitles.

deekerman commented

2026-02-21 10:10:38 -05:00

Author

Owner

@dirkf commented on GitHub (Nov 28, 2025):

From the issue title "Failing to ... try next format ...", format selection is a prior stage (although it could involve checking the validity of formats). By the time a download fails we have already fixed on the formats to be downloaded. There's no fallback available: the user can specifically ask for multiple formats (comma-separated).

See https://github.com/yt-dlp/yt-dlp/issues/15175#issuecomment-3585557521 and also #30990.

@dirkf commented on GitHub (Nov 28, 2025): From the issue title "Failing to ... try next format ...", format selection is a prior stage (although it could involve checking the validity of formats). By the time a download fails we have already fixed on the formats to be downloaded. [There's no fallback available: the user can specifically ask for multiple formats (comma-separated)](https://github.com/ytdl-org/youtube-dl/issues/21121). See https://github.com/yt-dlp/yt-dlp/issues/15175#issuecomment-3585557521 and also #30990.

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starred/youtube-dl-ytdl-org#18543

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