[FFmpeg-devel] [PATCH 2/2] avformat/hls: Add subtitle support

Franklin Phillips franklinphillips at gmx.com
Fri Dec 30 22:26:40 EET 2016

On Fri, Dec 16, 2016 at 05:13:50PM +0100, wm4 wrote:
> On Thu, 15 Dec 2016 22:01:46 +0000
> Franklin Phillips <franklinphillips at gmx.com> wrote:
> > Hi,
> > 
> > I tested this code by converting HLS streams into mp4 files and it
> > seemed to work fine. However I recently compiled mpv with these changes
> > and when I play back the Apple example stream given in ticket #2833, it
> > seems to skip a lot of subtitles. It works fine for the real world
> > streams I'm using it for but it's probably worth holding off with this
> > change until that's worked out.
> Could be a mpv-specific issue, maybe report it there.
I think you might be right, I could not reproduce it with ffmpeg alone
but I also cannot report it until these changes have been merged.
> > Also I tried to make minimal changes to the existing code path because
> > there don't seem to be any tests for HLS making it hard to know when
> > something is broken which I guess is why there is the duplication.
> > However I think you are right and it should be refactored, I had a
> > further look at how it could be done and will continue working on it.
> I wonder why not. Couldn't we put a small HLS stream on disk for FATE
> and let libavformat demux it? This still wouldn't test HTTP interaction
> of course.
This sounds like a good idea.

I have refactored the code to reduce duplication of code and sent the
new patches.

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