Verify that downloaded video starts with an ad segmentĪlternatively you can just feed the result of yt-dlp -g to your favorite player that supports M3U or pipe yt-dlp -o - into it.Wait about 20 seconds & cancel downloading.
Yt-dlp downloads small ad segment and then just gracefully exists as if stream ended.
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† There is a bug that prevents yt-dlp from switching to ffmpeg if you try to download rerun streams. Besides native HLS downloader has (had?) a lot of i/o issues and overall ffmpeg is preferred.
That means they don’t consume stdin and yt-dlp would have to act as a local M3U proxy/webserver. I’m equally interested in ad filtering when external tools use yt-dlp just to extract an M3U URL with -get-url or -dump-json. Obviously native HLS downloader can be fixed and adapted to filter ads but it would cover just that i.e. Related issues are, Yt-dlp side of thingsĪs far as I understand native HLS downloader doesn’t support Twitch at all because yt-dlp always † switches to ffmpeg. I’m not sure if any of them work right now. #+js(json-prune, /^X-TV-TWITCH-AD/)Īt some point there were server side ways to prevent Twitch from serving you ads at all by cloaking as specific ad-free client. There is also a filter list for uBlock Origin for web based player. Or any(attr_key.startswith("X-TV-TWITCH-AD-") for attr_key in daterange.x.keys()) Or str(daterange.id or "").startswith("stitched-ad-") Here is how streamlink feature –twitch-disable-ads works.ĭaterange.classname = "twitch-stitched-ad"
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At worst you get a few seconds gaps in a stream but you don’t get full length ads either. My understanding is it involves stripping-filtering-skipping ad segments from an M3U based on their # comments. There are well known tools that successfully deal with Twitch ads. There are no embedded ads if you download VODs (at least for now). Twitch does this only to live streams and reruns. Both prevent you from getting actual stream content.
Mid-roll ads can take up to a few minutes. They usually take about 15 seconds to finish. Pre-roll ads play right after you start grabbing a live stream. It doesn’t contain actual ad streams but you get placeholder segments lasting as long as ad would. Twitch has a system that embeds ad segments directly into an M3U playlist.
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