Hi,
Can anybody confirm: is it a bug or it is something I'm doing wrong?
When I try to re-encode some MPEG2 TS files into h.264/mp4 using libx264 for
encoder, embedded closed captions are not properly passed through to output
file.
It looks to me like CCs are doubled for some reason.
command:
"ffmpeg.exe -y -v 99 -loglevel 99 -i sample-1min.ts -c:a aac -c:v libx264
sample-1min.mp4"
Original CCs (got them with CCextractor tool) look like this:
1
00:00:01,751 --> 00:00:03,469
Yup, so you just
want a nice layer.
2
00:00:03,536 --> 00:00:04,670
That's good there.
3
00:00:04,721 --> 00:00:06,305
Potatoes are ready.
4
00:00:06,372 --> 00:00:08,090
This gets covered in
your famous pot crack?
While extracted from MP4 file after re-encoding - they look like this:
1
00:00:01,234 --> 00:00:03,034
So we'e're makaking B.C. h h?
2
00:00:03,036 --> 00:00:04,703
YuYup, so you u just
want a nice layerer.
3
00:00:04,871 --> 00:00:06,004
That''s goodod there.
4
00:00:06,105 --> 00:00:07,672
Potatoes a are ready..
Tools:
CCextractor: https://www.ccextractor.org/
FFmpeg:
https://ffmpeg.zeranoe.com/builds/win64/static/ffmpeg-20181018-f72b990-win64-static.zip
Source and output files, along with the FFmpeg debug log (240MB!) can be
downloaded from:
http://64.137.230.232/cc-distortion.zip
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