concat protocol should run in "-safe 0" mode by default
|Reported by:||GrayFace||Owned by:|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||no|
Summary of the bug:
It's very hard for me to imagine a task for which "-safe 1" makes sense. It probably involves list being obtained from outside source instead of being generated. What's for sure is that it's a sophisticated task for which figuring out and specifying additional parameters is not a problem.
For all regular users of "concat" option (me included) the "safe mode" brings only troubles, e.g. https://ffmpeg.org/pipermail/ffmpeg-user/2016-April/031560.html
No one knows why it's there, because the documentation doesn't say anything about rationale: https://www.ffmpeg.org/ffmpeg-formats.html#Options
Obviously, no backward compatibility.
How to reproduce:
% ffmpeg -nostats -f concat -i List.txt -c copy output (List.txt contains absolute paths) ffmpeg version N-79947-gcd244fa built on 20160512