Exclude dubs in crunchyroll download

[PonyFlare]

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Description of your issue, suggested solution and other information

Is there a simple way to exclude dubs (or choose a specific one) from a crunchyroll download?
Durara, for example, has both Japanese and English available, but there is only a single page - so it should be downloading everything in both languages if I point youtube-dl to that url.
Dragon Maid would be even worse without a filter, since it has a total of 5 languages.

I could of course choose each episode I want to download individually (and will if I have to), but I'm looking for something I can add to the command line to do it automatically.

[grandly]

I think Crunchyroll specifies the language in the format IDs. If that is the case, you'll be able to do something like youtube-dl -f 'best[format_id$=jp]' <url> or something like that. Run youtube-dl -F <url> on a Crunchyroll URL and post what it gives.

https://github.com/rg3/youtube-dl#format-selection describes format selection in great detail.

If the language isn't specified in the formats but it is somewhere else in the metadata, you might be able to use the --match-filter option to the same effect.

[PonyFlare]

Ah, thanks.

hls-audio-frFR-hardsub-frFR-401 mp4 428x240 [frFR] 401k , avc1.42c015, 23.974fps, mp4a.40.2
hls-audio-frFR-hardsub-frFR-547 mp4 640x360 [frFR] 547k , avc1.4d401e, 23.974fps, mp4a.40.2
hls-audio-frFR-hardsub-frFR-1008 mp4 848x480 [frFR] 1008k , avc1.4d401f, 23.974fps, mp4a.40.2
hls-audio-frFR-hardsub-frFR-2525 mp4 1280x720 [frFR] 2525k , avc1.640028, 23.974fps, mp4a.40.2
hls-audio-frFR-hardsub-frFR-5778 mp4 1920x1080 [frFR] 5778k , avc1.640028, 23.974fps, mp4a.40.2
hls-audio-frFR-401 mp4 428x240 [frFR] 401k , avc1.42c015, 23.974fps, mp4a.40.2
hls-audio-frFR-547 mp4 640x360 [frFR] 547k , avc1.4d401e, 23.974fps, mp4a.40.2
hls-audio-frFR-1009 mp4 848x480 [frFR] 1009k , avc1.4d401f, 23.974fps, mp4a.40.2
hls-audio-frFR-2526 mp4 1280x720 [frFR] 2526k , avc1.640028, 23.974fps, mp4a.40.2
hls-audio-frFR-5781 mp4 1920x1080 [frFR] 5781k , avc1.640028, 23.974fps, mp4a.40.2 (best)

and further down...

...
hls-audio-jaJP-6422-1 mp4 1920x1080 [jaJP] 6422k , avc1.640028, 23.974fps, mp4a.40.2
hls-audio-jaJP-6422-2 mp4 1920x1080 [jaJP] 6422k , avc1.640028, 23.974fps, mp4a.40.2 (best)

So a filter for [format_id*=jaJP] seems to work. Problem is it still goes through every single file and errors if specified format is not available. This means a need for -i and much extra wait time while it goes through each video. It keeps it entirely automated past giving the URL, at least.

[Yavos]

A possible solution/workaround might be to use the --playlist-start and --playlist-end parameters.
Since what videos will be shown is depending on your link (country code used) and it seems to always start at the bottom you could just do a little math and figure out what to skip.

Also given the country code in playlists is working (should be fixed soon) you could filter a bit by that.