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Recognize Error When Merging Extention #16052

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opened 2026-02-21 08:39:37 -05:00 by deekerman · 5 comments

deekerman commented

2026-02-21 08:39:37 -05:00

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Originally created by @goodboi69 on GitHub (Mar 2, 2019).

Please follow the guide below

You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
Put an x into all the boxes [ ] relevant to your issue (like this: [x])
Use the Preview tab to see what your issue will actually look like

Make sure you are using the latest version: run `youtube-dl --version` and ensure your version is 2019.03.01. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

I've verified and I assure that I'm running youtube-dl 2019.03.01

Before submitting an issue make sure you have:

At least skimmed through the README, most notably the FAQ and BUGS sections
Searched the bugtracker for similar issues including closed ones
Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

Bug report (encountered problems with youtube-dl)
Site support request (request for adding support for a new site)
Feature request (request for a new functionality)
Question
Other

The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

C:\Users\username>youtube-dl -f bestvideo+bestaudio --merge-output-format mp4 https://www.youtube.com/watch?v=FiX1WYee3NA
[youtube] FiX1WYee3NA: Downloading webpage
[youtube] FiX1WYee3NA: Downloading video info webpage
[download] Destination: Fastest nope in the west-FiX1WYee3NA.f136.mp4
[download] 100% of 3.00MiB in 00:00
[download] Destination: Fastest nope in the west-FiX1WYee3NA.f251.webm
[download] 100% of 326.71KiB in 00:00
[ffmpeg] Merging formats into "Fastest nope in the west-FiX1WYee3NA.mp4"
ERROR:   Stream #1:0 -> #0:1 (copy)

C:\Users\username>
...
<end of log>

If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

Single video: https://www.youtube.com/watch?v=FiX1WYee3NA

Note that youtube-dl does not support sites dedicated to copyright infringement. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

Description of your issue, suggested solution and other information

If when downloading a Youtube video without checking the type of best video and audio fails to merge the specified file extention, could youtube-dl recognize this fail and try another extention. In the example above I tried the best video and audio with the mp4 extention and it failed. But with the mkv extention it merged fine. Now, youtube-dl can recognize errors so it could be possible.

Originally created by @goodboi69 on GitHub (Mar 2, 2019). ## Please follow the guide below - You will be asked some questions and requested to provide some information, please read them **carefully** and answer honestly - Put an `x` into all the boxes [ ] relevant to your *issue* (like this: `[x]`) - Use the *Preview* tab to see what your issue will actually look like --- ### Make sure you are using the *latest* version: run `youtube-dl --version` and ensure your version is *2019.03.01*. If it's not, read [this FAQ entry](https://github.com/rg3/youtube-dl/blob/master/README.md#how-do-i-update-youtube-dl) and update. Issues with outdated version will be rejected. - [x] I've **verified** and **I assure** that I'm running youtube-dl **2019.03.01** ### Before submitting an *issue* make sure you have: - [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections - [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones - [x] Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser ### What is the purpose of your *issue*? - [ ] Bug report (encountered problems with youtube-dl) - [ ] Site support request (request for adding support for a new site) - [x] Feature request (request for a new functionality) - [ ] Question - [ ] Other --- ### The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your *issue* --- ### If the purpose of this *issue* is a *bug report*, *site support request* or you are not completely sure provide the full verbose output as follows: Add the `-v` flag to **your command line** you run youtube-dl with (`youtube-dl -v <your command line>`), copy the **whole** output and insert it here. It should look similar to one below (replace it with **your** log inserted between triple ```): ``` C:\Users\username>youtube-dl -f bestvideo+bestaudio --merge-output-format mp4 https://www.youtube.com/watch?v=FiX1WYee3NA [youtube] FiX1WYee3NA: Downloading webpage [youtube] FiX1WYee3NA: Downloading video info webpage [download] Destination: Fastest nope in the west-FiX1WYee3NA.f136.mp4 [download] 100% of 3.00MiB in 00:00 [download] Destination: Fastest nope in the west-FiX1WYee3NA.f251.webm [download] 100% of 326.71KiB in 00:00 [ffmpeg] Merging formats into "Fastest nope in the west-FiX1WYee3NA.mp4" ERROR: Stream #1:0 -> #0:1 (copy) C:\Users\username> ... <end of log> ``` --- ### If the purpose of this *issue* is a *site support request* please provide all kinds of example URLs support for which should be included (replace following example URLs by **yours**): - Single video: https://www.youtube.com/watch?v=FiX1WYee3NA Note that **youtube-dl does not support sites dedicated to [copyright infringement](https://github.com/rg3/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free)**. In order for site support request to be accepted all provided example URLs should not violate any copyrights. --- ### Description of your *issue*, suggested solution and other information If when downloading a Youtube video without checking the type of best video and audio fails to merge the specified file extention, could youtube-dl recognize this fail and try another extention. In the example above I tried the best video and audio with the mp4 extention and it failed. But with the mkv extention it merged fine. Now, youtube-dl can recognize errors so it could be possible.

deekerman

2026-02-21 08:39:37 -05:00

closed this issue
added the
incomplete
label

deekerman commented

2026-02-21 08:39:41 -05:00

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Owner

@ttpcodes commented on GitHub (Mar 20, 2019):

I'm seeing this issue as well, on version 2019.03.18. Here are some more URLs that cause an error when merging:

I'll update this comment as I dig up more links I've had issues with, but please look into this issue.

@ttpcodes commented on GitHub (Mar 20, 2019): I'm seeing this issue as well, on version 2019.03.18. Here are some more URLs that cause an error when merging: - https://www.youtube.com/watch?v=k9iYm9PEAHg - https://www.youtube.com/watch?v=hMc8naeeSS8 I'll update this comment as I dig up more links I've had issues with, but please look into this issue.

deekerman commented

2026-02-21 08:39:41 -05:00

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Owner

@remitamine commented on GitHub (Mar 21, 2019):

missing verbose log, also make sure you're using an updated ffmpeg version.

@remitamine commented on GitHub (Mar 21, 2019): missing verbose log, also make sure you're using an updated ffmpeg version.

deekerman commented

2026-02-21 08:39:41 -05:00

Author

Owner

@ttpcodes commented on GitHub (Mar 21, 2019):

Thanks for the heads up about the ffmpeg version. I updated to the latest ffmpeg version and this issue has disappeared.

@ttpcodes commented on GitHub (Mar 21, 2019): Thanks for the heads up about the `ffmpeg` version. I updated to the latest `ffmpeg` version and this issue has disappeared.

deekerman commented

2026-02-21 08:39:41 -05:00

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Owner

@genewitch commented on GitHub (Apr 1, 2019):

adding a full error message:

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--merge-output-format', 'mp4', '-f', 'bestvideo[height<=480]+bestaudio/best[height<=480]', 'https://www.youtube.com/playlist?list=PLgUGfzMeW6jJLx3asjLlVepax5U9HowbC']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.04.01
[debug] Python version 3.6.5 (CPython) - Linux-4.14.65-gentoo-x86_64-QEMU_Virtual_CPU_version_2.5+-with-gentoo-2.6
[debug] exe versions: ffmpeg 4.1.3, ffprobe 4.1.3
[debug] Proxy map: {}
[youtube:playlist] PLgUGfzMeW6jJLx3asjLlVepax5U9HowbC: Downloading webpage
[download] Downloading playlist: New building lot; excavation
[youtube:playlist] playlist New building lot; excavation: Downloading 13 videos
[download] Downloading video 1 of 13
[youtube] Az45HYnAAps: Downloading webpage
[youtube] Az45HYnAAps: Downloading video info webpage
[debug] Invoking downloader on 'https://r1---sn-q4fl6ns7.googlevideo.com/videoplayback?ei=VLGiXN6fCYmltQer94ewDw&mm=31%2C26&ipbits=0&aitags=133%2C134%2C135%2C136%2C137%2C160%2C242%2C243%2C244%2C247%2C248%2C271%2C278%2C313&sparams=aitags%2Cclen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&initcwndbps=207500&c=WEB&id=o-AEzVBU4kdbsu3QoSnFL0NsQYbaBqSM-ZA6luzt2NAQqq&gir=yes&clen=114506032&mn=sn-q4fl6ns7%2Csn-5uaeznys&ms=au%2Conr&mt=1554166027&mv=m&ip=107.77.200.172&signature=219048D99326CD2672B768A2B701AD552B0CCC0F.89F747874BF5CBCA7BE87F9F0A3376794F6A483E&fvip=1&dur=853.894&lmt=1536152368931361&keepalive=yes&expire=1554187700&pl=24&mime=video%2Fmp4&key=yt6&source=youtube&requiressl=yes&itag=135&ratebypass=yes'
[download] Installing a driveway entrance-Az45HYnAAps.f135.mp4 has already been downloaded
[download] 100% of 109.20MiB
[debug] Invoking downloader on 'https://r1---sn-q4fl6ns7.googlevideo.com/videoplayback?ei=VLGiXN6fCYmltQer94ewDw&mm=31%2C26&ipbits=0&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&initcwndbps=207500&c=WEB&id=o-AEzVBU4kdbsu3QoSnFL0NsQYbaBqSM-ZA6luzt2NAQqq&gir=yes&clen=14495983&mn=sn-q4fl6ns7%2Csn-5uaeznys&ms=au%2Conr&mt=1554166027&mv=m&ip=107.77.200.172&signature=404AC5DE103EB89305A8A6C8977CAA0F679ED637.9E93FC1878322871945B19F0F7DE7F86524611AE&fvip=1&dur=853.921&lmt=1536241599029616&keepalive=yes&expire=1554187700&pl=24&mime=audio%2Fwebm&key=yt6&source=youtube&requiressl=yes&itag=251&ratebypass=yes'
[download] Installing a driveway entrance-Az45HYnAAps.f251.webm has already been downloaded
[download] 100% of 13.82MiB
[ffmpeg] Merging formats into "Installing a driveway entrance-Az45HYnAAps.mp4"
[debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:Installing a driveway entrance-Az45HYnAAps.f135.mp4' -i 'file:Installing a driveway entrance-Az45HYnAAps.f251.webm' -c copy -map 0:v:0 -map 1:a:0 'file:Installing a driveway entrance-Az45HYnAAps.temp.mp4'
ERROR:   Stream #1:0 -> #0:1 (copy)
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 2052, in post_process
    files_to_delete, info = pp.run(info)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 512, in run
    self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 235, in run_ffmpeg_multiple_files
    raise FFmpegPostProcessorError(msg)
youtube_dl.postprocessor.ffmpeg.FFmpegPostProcessorError:   Stream #1:0 -> #0:1 (copy)

youtube-dl version 2019.04.01; ffmpeg version 4.1.3

@genewitch commented on GitHub (Apr 1, 2019): adding a full error message: ```youtube-dl -v --merge-output-format mp4 -f 'bestvideo[height<=480]+bestaudio/best[height<=480]' https://www.youtube.com/playlist?list=PLgUGfzMeW6jJLx3asjLlVepax5U9HowbC [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: ['-v', '--merge-output-format', 'mp4', '-f', 'bestvideo[height<=480]+bestaudio/best[height<=480]', 'https://www.youtube.com/playlist?list=PLgUGfzMeW6jJLx3asjLlVepax5U9HowbC'] [debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8 [debug] youtube-dl version 2019.04.01 [debug] Python version 3.6.5 (CPython) - Linux-4.14.65-gentoo-x86_64-QEMU_Virtual_CPU_version_2.5+-with-gentoo-2.6 [debug] exe versions: ffmpeg 4.1.3, ffprobe 4.1.3 [debug] Proxy map: {} [youtube:playlist] PLgUGfzMeW6jJLx3asjLlVepax5U9HowbC: Downloading webpage [download] Downloading playlist: New building lot; excavation [youtube:playlist] playlist New building lot; excavation: Downloading 13 videos [download] Downloading video 1 of 13 [youtube] Az45HYnAAps: Downloading webpage [youtube] Az45HYnAAps: Downloading video info webpage [debug] Invoking downloader on 'https://r1---sn-q4fl6ns7.googlevideo.com/videoplayback?ei=VLGiXN6fCYmltQer94ewDw&mm=31%2C26&ipbits=0&aitags=133%2C134%2C135%2C136%2C137%2C160%2C242%2C243%2C244%2C247%2C248%2C271%2C278%2C313&sparams=aitags%2Cclen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&initcwndbps=207500&c=WEB&id=o-AEzVBU4kdbsu3QoSnFL0NsQYbaBqSM-ZA6luzt2NAQqq&gir=yes&clen=114506032&mn=sn-q4fl6ns7%2Csn-5uaeznys&ms=au%2Conr&mt=1554166027&mv=m&ip=107.77.200.172&signature=219048D99326CD2672B768A2B701AD552B0CCC0F.89F747874BF5CBCA7BE87F9F0A3376794F6A483E&fvip=1&dur=853.894&lmt=1536152368931361&keepalive=yes&expire=1554187700&pl=24&mime=video%2Fmp4&key=yt6&source=youtube&requiressl=yes&itag=135&ratebypass=yes' [download] Installing a driveway entrance-Az45HYnAAps.f135.mp4 has already been downloaded [download] 100% of 109.20MiB [debug] Invoking downloader on 'https://r1---sn-q4fl6ns7.googlevideo.com/videoplayback?ei=VLGiXN6fCYmltQer94ewDw&mm=31%2C26&ipbits=0&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&initcwndbps=207500&c=WEB&id=o-AEzVBU4kdbsu3QoSnFL0NsQYbaBqSM-ZA6luzt2NAQqq&gir=yes&clen=14495983&mn=sn-q4fl6ns7%2Csn-5uaeznys&ms=au%2Conr&mt=1554166027&mv=m&ip=107.77.200.172&signature=404AC5DE103EB89305A8A6C8977CAA0F679ED637.9E93FC1878322871945B19F0F7DE7F86524611AE&fvip=1&dur=853.921&lmt=1536241599029616&keepalive=yes&expire=1554187700&pl=24&mime=audio%2Fwebm&key=yt6&source=youtube&requiressl=yes&itag=251&ratebypass=yes' [download] Installing a driveway entrance-Az45HYnAAps.f251.webm has already been downloaded [download] 100% of 13.82MiB [ffmpeg] Merging formats into "Installing a driveway entrance-Az45HYnAAps.mp4" [debug] ffmpeg command line: ffmpeg -y -loglevel repeat+info -i 'file:Installing a driveway entrance-Az45HYnAAps.f135.mp4' -i 'file:Installing a driveway entrance-Az45HYnAAps.f251.webm' -c copy -map 0:v:0 -map 1:a:0 'file:Installing a driveway entrance-Az45HYnAAps.temp.mp4' ERROR: Stream #1:0 -> #0:1 (copy) Traceback (most recent call last): File "/usr/lib64/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 2052, in post_process files_to_delete, info = pp.run(info) File "/usr/lib64/python3.6/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 512, in run self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args) File "/usr/lib64/python3.6/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 235, in run_ffmpeg_multiple_files raise FFmpegPostProcessorError(msg) youtube_dl.postprocessor.ffmpeg.FFmpegPostProcessorError: Stream #1:0 -> #0:1 (copy) ``` youtube-dl version 2019.04.01; ffmpeg version 4.1.3

deekerman commented

2026-02-21 08:39:41 -05:00

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@remitamine commented on GitHub (Apr 2, 2019):

@genewitch you have to select compatible formats for the container that you have selected(mp4 and m4a formats for the mp4 container).

@remitamine commented on GitHub (Apr 2, 2019): @genewitch you have to select compatible formats for the container that you have selected(mp4 and m4a formats for the mp4 container).

deekerman referenced this issue

2026-02-21 09:23:29 -05:00

[bilibili] Downloading videos on page 2 and 3 etc #17216

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starred/youtube-dl-ytdl-org#16052

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Recognize Error When Merging Extention #16052

Please follow the guide below

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2019.03.01. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

Before submitting an issue make sure you have:

What is the purpose of your issue?

The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

Description of your issue, suggested solution and other information

Make sure you are using the latest version: run `youtube-dl --version` and ensure your version is 2019.03.01. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.