Erroneous choise for bestvideo [youtube]

[rend3r]

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2018.08.04
[debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-90346-g86c7d8df95
[debug] Proxy map: {}
Usage: youtube-dl.exe [OPTIONS] URL [URL...]

youtube-dl -F 5Y12meOdJ4M
[youtube] 5Y12meOdJ4M: Downloading webpage
[youtube] 5Y12meOdJ4M: Downloading video info webpage
[youtube] 5Y12meOdJ4M: Downloading MPD manifest
[youtube] 5Y12meOdJ4M: Downloading MPD manifest
[info] Available formats for 5Y12meOdJ4M:
format code  extension  resolution note
139          m4a        audio only DASH audio   54k , m4a_dash container, mp4a.40.5@ 48k (22050Hz), 28.38MiB
140          m4a        audio only DASH audio  134k , m4a_dash container, mp4a.40.2@128k (44100Hz), 75.32MiB
160          mp4        256x138    DASH video  108k , mp4_dash container, avc1.4d400b, 24fps, video only
133          mp4        426x228    DASH video  242k , mp4_dash container, avc1.4d400c, 24fps, video only
134          mp4        640x344    DASH video  285k , mp4_dash container, avc1.4d401e, 24fps, video only, 34.61MiB
135          mp4        854x458    DASH video 1155k , mp4_dash container, avc1.4d4014, 24fps, video only
**137**          mp4        1920x1032  DASH video **2221k** , mp4_dash container, avc1.640028, 24fps, video only, 207.67MiB
**136**          mp4        1280x688   DASH video **2310k** , mp4_dash container, avc1.4d4016, 24fps, video only
17           3gp        176x144    small , mp4v.20.3, mp4a.40.2@ 24k, 28.03MiB
36           3gp        320x172    small , mp4v.20.3, mp4a.40.2, 66.00MiB
43           webm       640x360    medium , vp8.0, vorbis@128k, 90.99MiB
18           mp4        640x344    medium , avc1.42001E, mp4a.40.2@ 96k, 164.13MiB
22           mp4        1280x688   hd720 , avc1.64001F, mp4a.40.2@192k (best)

Resulting videos:

137
Duration : 1h 21mn
Bit rate : 355 Kbps
File size : 208 MiB
136
Duration : 1h 21mn
Bit rate : 270 Kbps
File size : 159 MiB

But yt-dl chooses 136 format insteed 137.
youtube-dl -f bestvideo+bestaudio/best 5Y12meOdJ4M
or
youtube-dl --no-mtime -f "bestvideo[vcodec^=avc]+bestaudio[acodec^=mp4a]" 5Y12meOdJ4M

[dstftw]

This is expected behavior. Bitrate takes priority over resolution.

[rend3r]

Ok, but how does yt-dl define bitrate? First dash chunk, from dash manifest? Anyway, it's naive to rely on bitrate, especially when it is wrong calculated.

[rend3r]

Why did you close the issue? In current state yt-dl wrongly determine bitrate.
1920x1032 video bitrate is 355 Kbps, for 1280x688 - 270 Kbps only.
Could you add option, something --prefer-resolution-over-bitrate? Or extend bestvideo format option, for example: bestvideo[prio=res,vcodec,fps,br], so yt-dl will choose video with max available resolution->with selected vcodec (if available)->with max available fps->with max available bitrate.
More cases for filtering video: bestvideo[prio=br,fps,height], bestvideo[prio=fps,br] and so on.