Bug#819266: ffmpeg: rtmp is broken

[Ralf Jung]

Hi,

> Quoting Ralf Jung (2016-03-25 19:19:35)
>> something about rtmp is broken in ffmpeg as shipped in Debian.
>> For example, the Revision RTMP streams <https://2016.revision-party.net/live> do not work in either MPV or VLC.
>> However, after building mpv and ffmpeg using mpv-build <https://github.com/mpv-player/mpv-build>, the streams
>> *do* work -- and since MPV and VLC shows the same error, I suspect ffmpeg is the culprit here.
> 
> Seems to be even lower level than ffmpeg, and already reported: 
> https://bugs.debian.org/654665

mpv-build does not seem to build its own version of librtmp. Instead, as
far as I can tell, it builds ffmpeg without librtmp -- judging from the
object files I see:

> ./ffmpeg_build/libavformat/rtmpproto.o
> ./ffmpeg_build/libavformat/rtmphttp.o
> ./ffmpeg_build/libavformat/rtmppkt.o

I don't even have librtmp-dev installed, so it could hardly link against
that library.

So I don't think this is fixed because of any changes librtmp could
make. It rather seems to be fixed by entirely avoiding librtmp.

Kind regards,
Ralf