subtitles filter fails to display all ASS subtitles
|Reported by:||Gregory Beauregard||Owned by:|
|Version:||git-master||Keywords:||ass libass subtitles|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||no|
Summary of the bug: For some files it seems ffmpeg's subtitles filter fails to display all the ASS subtitles that mpv displays. libass version is 0.15.0
How to reproduce: Download testfile (2.1 MB) https://gably.net/testcase/demo.mkv
Hardsub the subtitles in the file with the subtitles filter as follows:
#!/bin/bash rm -f log.txt ffmpeg -loglevel debug -i demo.mkv -vf subtitles=demo.mkv -c:v libx264 -b:v 600k -c:a libopus -b:a 96k -map 0:v -map 0:a -y hardsubdemo.mkv >>log.txt 2>&1
Observe the subtitles where the leaf is talking aren't hardsubbed into
hardsubdemo.mkv, but the line at the end is hardsubbed fine. Both subtitle lines can be observed by viewing the original file with mpv.
I will attach log at
-loglevel debug that shows build information and output.