Redgifs downloads both best & worst quality versions

[ahsaassy]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2021.06.06
• 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 issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-F', '-v', 'https://redgifs.com/watch/qualifiedsubtlecrossbill']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.9.5 (CPython) - Linux-4.9.186-perf+-aarch64-with-libc
[debug] exe versions: ffmpeg 4.4, ffprobe 4.4
[debug] Proxy map: {}
[generic] qualifiedsubtlecrossbill: Requesting header
[redirect] Following redirect to https://www.redgifs.com/watch/qualifiedsubtlecrossbill
[generic] qualifiedsubtlecrossbill: Requesting header
WARNING: Falling back on generic information extractor.
[generic] qualifiedsubtlecrossbill: Downloading webpage
[generic] qualifiedsubtlecrossbill: Extracting information
[download] Downloading playlist: None
[generic] playlist None: Collected 2 video ids (downloading 2 of them)
[download] Downloading video 1 of 2
[info] Available formats for QualifiedSubtleCrossbill:
format code  extension  resolution note
0            mp4        unknown
[download] Downloading video 2 of 2
[info] Available formats for QualifiedSubtleCrossbill-mobile:
format code  extension  resolution note
0            mp4        unknown

Description

!!!! Warning: NSFW LINK !!!!

youtube-dl is supposed to download only the best version but on redgifs, both versions gets downloaded.

HQ version: 3Mbps 1080p H264 30fps (22MB)
-mobile version: 614KBps 480p H264 30fps (4.5MB)

As you can see above, RG serves a playlist so ytdl treats them as seperate videos and both get downloaded. Quality selection parameters (worstvideo / bestvideo) don't work at all. Also there is no format code so (-f) doesn't work either.
This was not the case i think about 3-4 months ago.

[rautamiekka]

Yes, it's true:

$ youtube-dl -v "https://redgifs.com/watch/qualifiedsubtlecrossbill"
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'https://redgifs.com/watch/qualifiedsubtlecrossbill']
[debug] Encodings: locale cp65001, fs utf-8, out utf-8, pref cp65001
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.8.10 (CPython) - Windows-10-10.0.19042-SP0
[debug] exe versions: none
[debug] Proxy map: {}
[generic] qualifiedsubtlecrossbill: Requesting header
[redirect] Following redirect to https://www.redgifs.com/watch/qualifiedsubtlecrossbill
[generic] qualifiedsubtlecrossbill: Requesting header
WARNING: Falling back on generic information extractor.
[generic] qualifiedsubtlecrossbill: Downloading webpage
[generic] qualifiedsubtlecrossbill: Extracting information
[download] Downloading playlist: None
[generic] playlist None: Collected 2 video ids (downloading 2 of them)
[download] Downloading video 1 of 2
[debug] Default format spec: best/bestvideo+bestaudio
[debug] Invoking downloader on 'https://thumbs2.redgifs.com/QualifiedSubtleCrossbill.mp4'
[download] Destination: Blonde Cory Chase Kiara Cole Lesbians MILF Pornstar Pussy Eating Porn GIF by pierre0685 (1)-QualifiedSubtleCrossbill.mp4
[download] 100% of 22.01MiB in 00:07
[download] Downloading video 2 of 2
[debug] Default format spec: best/bestvideo+bestaudio
[debug] Invoking downloader on 'https://thumbs2.redgifs.com/QualifiedSubtleCrossbill-mobile.mp4'
[download] Destination: Blonde Cory Chase Kiara Cole Lesbians MILF Pornstar Pussy Eating Porn GIF by pierre0685 (2)-QualifiedSubtleCrossbill-mobile.mp4
[download] 100% of 4.50MiB in 00:01
[download] Finished downloading playlist: None

, but if you look at these lines:

[generic] qualifiedsubtlecrossbill: Requesting header
[redirect] Following redirect to https://www.redgifs.com/watch/qualifiedsubtlecrossbill
[generic] qualifiedsubtlecrossbill: Requesting header
WARNING: Falling back on generic information extractor.
[generic] qualifiedsubtlecrossbill: Downloading webpage
[generic] qualifiedsubtlecrossbill: Extracting information

and take a look at https://github.com/ytdl-org/youtube-dl/search?q=redgifs you'll see ytdl doesn't support redgifs per se, instead it uses the generic support.

^ That's the reason it takes both: it sees 2 vids of diff names/ID's and doesn't have a concept of same-but-diff-qualities.

[ysateat]

youtube-dl-redgifs.patch.txt

I did this to use the gfycat extractor for redgifs links.