[Youtube] Swapped codec descriptions for -f 171 and 43 #12587

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opened 2026-02-21 05:27:45 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-21 05:27:45 -05:00

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Originally created by @VADemon on GitHub (Jan 10, 2018).

I've verified and I assure that I'm running youtube-dl 2018.01.07

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

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

[debug] System config: []
[debug] User config: ['--rate-limit', '4.2M', '-f', 'bestvideo[height<=720]+bestaudio/bestvideo[width<=1920]+bestaudio/bestvideo+bestaudio/best']
[debug] Custom config: []
[debug] Command-line args: ['-F', '-v', 'https://www.youtube.com/watch?v=yXuaK6SV_6Y']
[debug] Encodings: locale cp1251, fs mbcs, out cp1251, pref cp1251
[debug] youtube-dl version 2018.01.07
[debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-75504-gaa6c43f, ffprobe N-75504-gaa6c43f
[debug] Proxy map: {}
...
[youtube] yXuaK6SV_6Y: Downloading webpage
[youtube] yXuaK6SV_6Y: Downloading video info webpage
[youtube] yXuaK6SV_6Y: Extracting video information
[info] Available formats for yXuaK6SV_6Y:
format code  extension  resolution note
140          m4a        audio only DASH audio  127k , m4a_dash container, mp4a.40.2@128k, 1.99MiB
171          webm       audio only DASH audio  137k , 1fps, vorbis@128k, 1.87MiB
160          mp4        256x144    144p  128k , avc1.4d400c, 15fps, video only, 1.66MiB
133          mp4        426x240    240p  253k , avc1.4d4015, 30fps, video only, 3.83MiB
134          mp4        640x360    360p  605k , avc1.4d401e, 30fps, video only, 7.73MiB
135          mp4        854x480    480p 1200k , avc1.4d401f, 30fps, video only, 17.06MiB
136          mp4        1280x720   720p 2221k , avc1.4d401f, 30fps, video only, 34.28MiB
17           3gp        176x144    small , mp4v.20.3, mp4a.40.2@ 24k
36           3gp        320x180    small , mp4v.20.3, mp4a.40.2
43           webm       640x360    medium , vp8.0, vorbis@128k
18           mp4        640x360    medium , avc1.42001E, mp4a.40.2@ 96k
22           mp4        1280x720   hd720 , avc1.64001F, mp4a.40.2@192k (best)

URL: https://www.youtube.com/watch?v=yXuaK6SV_6Y

The audio codec -f 171 is wrongly detected to be "1 fps" and -f 43 video codec returns vorbis@128k. I don't know how to double-check if it's maybe Youtube's fault, sorry.

Originally created by @VADemon on GitHub (Jan 10, 2018). - [x] I've **verified** and **I assure** that I'm running youtube-dl **2018.01.07** ### 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 ### What is the purpose of your *issue*? - [x] 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 --- ``` [debug] System config: [] [debug] User config: ['--rate-limit', '4.2M', '-f', 'bestvideo[height<=720]+bestaudio/bestvideo[width<=1920]+bestaudio/bestvideo+bestaudio/best'] [debug] Custom config: [] [debug] Command-line args: ['-F', '-v', 'https://www.youtube.com/watch?v=yXuaK6SV_6Y'] [debug] Encodings: locale cp1251, fs mbcs, out cp1251, pref cp1251 [debug] youtube-dl version 2018.01.07 [debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1 [debug] exe versions: ffmpeg N-75504-gaa6c43f, ffprobe N-75504-gaa6c43f [debug] Proxy map: {} ... [youtube] yXuaK6SV_6Y: Downloading webpage [youtube] yXuaK6SV_6Y: Downloading video info webpage [youtube] yXuaK6SV_6Y: Extracting video information [info] Available formats for yXuaK6SV_6Y: format code extension resolution note 140 m4a audio only DASH audio 127k , m4a_dash container, mp4a.40.2@128k, 1.99MiB 171 webm audio only DASH audio 137k , 1fps, vorbis@128k, 1.87MiB 160 mp4 256x144 144p 128k , avc1.4d400c, 15fps, video only, 1.66MiB 133 mp4 426x240 240p 253k , avc1.4d4015, 30fps, video only, 3.83MiB 134 mp4 640x360 360p 605k , avc1.4d401e, 30fps, video only, 7.73MiB 135 mp4 854x480 480p 1200k , avc1.4d401f, 30fps, video only, 17.06MiB 136 mp4 1280x720 720p 2221k , avc1.4d401f, 30fps, video only, 34.28MiB 17 3gp 176x144 small , mp4v.20.3, mp4a.40.2@ 24k 36 3gp 320x180 small , mp4v.20.3, mp4a.40.2 43 webm 640x360 medium , vp8.0, vorbis@128k 18 mp4 640x360 medium , avc1.42001E, mp4a.40.2@ 96k 22 mp4 1280x720 hd720 , avc1.64001F, mp4a.40.2@192k (best) ``` --- URL: https://www.youtube.com/watch?v=yXuaK6SV_6Y --- The audio codec -f 171 is wrongly detected to be "1 fps" and -f 43 video codec returns vorbis@128k. I don't know how to double-check if it's maybe Youtube's fault, sorry.

deekerman closed this issue

2026-02-21 05:27:48 -05:00

deekerman commented

2026-02-21 05:27:49 -05:00

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@dstftw commented on GitHub (Jan 10, 2018):

171 is what youtube provides.
43 is hardcoded data.

@dstftw commented on GitHub (Jan 10, 2018): 171 is what youtube provides. 43 is hardcoded data.

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starred/youtube-dl#12587

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