#5969: Closed Captions broken with h264_qsv encoder
-------------------------------------+-------------------------------------
Reporter: Sawgr | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: Captions, | Blocked By:
QSV | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
Ffmpeg 3.2 has -a53cc turned on by default. It works perfectly well when
encoding with libx264. Closed Captions from mpeg files are inserted into
the resulting mp4, and they can be turned on or off when playing the file
in VLC, any other media player or even Apple TV.
3.2 is supposed to include the same functionality when encoding with
h264_qsv (Intel QSV hardware acceleration), but it seems to be somehow
broken. Captions are included but they are all messed up. Some words show
up, some are just gibberish.
How to reproduce:
{{{
% ffmpeg.exe -i "Test.ts" -f mpegts -c:v h264_qsv -c:a:0 libmp3lame -b:a:0
128k Out2.mp4
ffmpeg version N-82579-g28d8789
built on 20161120
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5969>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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