[mythtv-commits] [MythTV/mythtv] 261b6d: AvFormatDecoder: Fix playback of some Matroska files

[Mark Kendall]

  Branch: refs/heads/master
  Home:   https://github.com/MythTV/mythtv
  Commit: 261b6d79e768f34386b9722c5e534dafeb7a3cb8
      https://github.com/MythTV/mythtv/commit/261b6d79e768f34386b9722c5e534dafeb7a3cb8
  Author: Mark Kendall <mark.kendall at gmail.com>
  Date:   2020-03-29 (Sun, 29 Mar 2020)

  Changed paths:
    M mythtv/libs/libmythtv/decoders/avformatdecoder.cpp

  Log Message:
  -----------
  AvFormatDecoder: Fix playback of some Matroska files

- this effectively bumps the default, fallback bitrate when no video
bitrate is detected and scales the bitrate for the video size.
- this fixes several mkv clips where FFmpeg does not detect the bitrate,
we fallback to 500k which also subsequently drops to a 16KB read chunk
size - which never fills the buffers for 4k HEVC streams running at over
20Mb/s.