Bouke www.VideoToolShed.com van Oldenbarneveltstraat 33 6512 AS Nijmegen +31 6 21817248 To send files, go here: https://videotoolshed.wetransfer.com/
> On 26 Feb 2019, at 13:20, Moritz Barsnick <[email protected]> wrote: > > On Tue, Feb 26, 2019 at 11:00:40 +0100, [email protected] wrote: >> 2 - Growing file generation slower than processing >> ffmpeg.exe -i input.mxf growing.mkv >> ffmpeg.exe -i growing.mkv -c copy output.mkv >>> ffmpeg stops when it reaches the current end of the growing file. >> >> Any way to avoid this behavior ? > > My second recommendation with "tail" here works for me: > https://lists.ffmpeg.org/pipermail/ffmpeg-user/2016-July/032874.html > <https://lists.ffmpeg.org/pipermail/ffmpeg-user/2016-July/032874.html> Hi Moritz, Great trick, works here too, except that it of course never stops. So, it’s either telling FFmpeg how long the file ‘should’ be, or do a 'pkill tail'. Is there a more sophisticated way? Next, it is dog slow, sorta kinda defeating the whole idea. (Since the data is piped at a speed that FFmpeg will never be able to catch up with the original…) bouke$ ffmpeg -i /Users/bouke/Desktop/Judith/Harding.mxf -an -s 120x40 -t 15 -y /Users/bouke/Desktop/Judith/test.mp4 Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg4 (native)) Press [q] to stop, [?] for help frame= 375 fps=136 q=2.0 Lsize= 365kB time=00:00:15.00 bitrate= 199.6kbits/s video:363kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.674411% vs bouke$ tail -c +1 -F /Users/bouke/Desktop/Judith/Harding.mxf | ffmpeg -i - -an -s 120x40 -t 15 -y /Users/bouke/Desktop/Judith/test.mp4 Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg4 (native)) frame= 375 fps= 28 q=2.0 Lsize= 365kB time=00:00:15.00 bitrate= 199.5kbits/s dup=1 drop=0 video:363kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.674757% Am I missing something? Bouke > Moritz > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
