[FFmpeg-trac] #10149(avformat:new): Unable to read most of HLS M3U8 from Arte TV

[FFmpeg]

#10149: Unable to read most of HLS M3U8 from Arte TV
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             Reporter:  Thomas       |                    Owner:  (none)
  ERNEST                             |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avformat
              Version:  4.4.3        |               Resolution:
             Keywords:  hls m3u8     |               Blocked By:
  fmp4 multivariante                 |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Thomas ERNEST):

 * keywords:  hls m3u8 webvtt fmp4 subtitles => hls m3u8 fmp4 multivariante

Comment:

 Indeed the problem is not related to webvtt or subtitles. The root cause
 is related to the multivariant playlist
 https://developer.apple.com/documentation/http-live-streaming/creating-a
 -multivariant-playlist or byterange addressing.
 It is possible to build a set of new m3u to index streams without
 multivariant and byterange addressing so that FFMPEG can play it.
 Nevertheless, there is still a problem with these new m3u : the content is
 not seekable. It is not possible to fast-forward, rewind or jump to a
 moment in video.

 To reproduce:
 1. GET https://www.arte.tv/api/rproxy/emac/v4/fr/tv/pages/HOME/
 2. pick any programId from the response e.g. 020528-000-A
 3. GET https://api.arte.tv/api/player/v2/config/fr/020528-000-A
 4. Read URLs to m3u in data.attributes.streams.url
 Notes : Each m3u has different combinaition audio and subtibles e.g.
 original version with french subtitles, german language without
 subtitles... m3u have the same multivariant video streams. Different audio
 stream and subtitles combinaison.
 5. Pick a video stream and every audios streams. Create a m3u to
 encapsulate each stream.
 6. Create a parent m3u to index and add metadata to stream m3u.
 Notes : See m3u attached to the ticket as an example. m3u from step 5 and
 6 follow the pattern in https://developer.apple.com/documentation/http-
 live-streaming/adding-alternate-media-to-a-playlist.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10149#comment:6>
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