[vlc-devel] [PATCH] demux: adaptive: fix es recyling

[Zhao Zhili]

> On 19 May 2018, at 1:38 AM, Francois Cartegnie <fcvlcdev at free.fr> wrote:
> 
> Le 18/05/2018 à 19:19, Zhao Zhili a écrit :
> 
>> The original problem is solved, but there is another issue now:
>> https://mailman.videolan.org/pipermail/vlc-devel/2018-May/119085.html
>> It's the same patch with different commit message.
> 
> A stream can't have multiple audio tracks, and the fakeesout is per stream.
> 

RFC 8216  HTTP Live Streaming

-------------------
4.3.2.3.  EXT-X-DISCONTINUITY

 The EXT-X-DISCONTINUITY tag MUST be present if there is a change in
   any of the following characteristics:

   o  number, type, and identifiers of tracks
-------------------
6.3.3.  Playing the Media Playlist File

Clients SHOULD be prepared to handle multiple tracks of a particular
   type (e.g., audio or video).  A client with no other preference
   SHOULD choose the track with the lowest numerical track identifier
   that it can play.
---------------------
I think it's talking about multiple audio tracks in a segment, not alternative audio.

https://github.com/google/ExoPlayer/blob/000f3f23056aae30a98ac74fb30e484844548b3e/library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsSampleStreamWrapper.java

  * <p>Tracks in HLS are complicated. A HLS master playlist contains a number of "variants". Each
   * variant stream typically contains muxed video, audio and (possibly) additional audio, metadata
   * and caption tracks. We wish to allow the user to select between an adaptive track that spans
   * all variants, as well as each individual variant. If multiple audio tracks are present within
   * each variant then we wish to allow the user to select between those also.


> -- 
> Francois Cartegnie
> VideoLAN - VLC Developer
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