> On 18 May 2021, at 09:33, Moritz Barsnick <barsn...@gmx.net> wrote: > > On Mon, May 17, 2021 at 09:19:46 +0200, Bouke wrote: >>> You will have to show/look at the console output of both commands. >>> (It's there for a reason, and most likely says what the issue is.) >> >> I know, but there was ’nothing’ on stdErr / stdOut. > > Then you're capturing your output incorrectly.
Nah, this was an apology for an earlier message where I ment ’nothing except the banner' > >> It turns out that FFmpeg crashes, nothing wrong with the command line. >> QProcess sees an error, and either QProcess terminates FFmpeg (I don’t think >> so) or FFmpeg crashes by itself. > > If QProcess terminates it unconditionally, there's nothing we can do(?). I understand, but now it’s the blame game, what happens where / when / why? > If ffmpeg crashes, that's bad. You would have to convince your system > to create a core dump, and would have to look at a backtrace. (Or run > ffmpeg within gdb.) Eeh, I’m a simple scripter, not a coder, no clue how to do that... > >> in Python: >> cmd = "bash" >> args = ["-c", "/Applications/ffmpeg -loglevel trace -report -f avfoundation >> -i :0 /Volumes/Data/test.mov"] > > Do you need to run it in bash? Can you not set cmd to "ffmpeg" and > properly pass the arguments? Normally I do that, especially as that saves tons of headaches on escaping stuff. But this was a suggestion from the QT forum, hoping it would provide a bit more insight. https://forum.qt.io/topic/126674/escaping-colon-in-command-line-argument/8 <https://forum.qt.io/topic/126674/escaping-colon-in-command-line-argument/8> Trust me, it makes no difference if I use separate args or run it as bash. Bouke > > Regards, > Moritz > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
