[FFmpeg-trac] #4437(avdevice:open): AVFoundation recording has consistent intermittent frame drops
FFmpeg
trac at avcodec.org
Wed Apr 8 17:50:55 CEST 2015
#4437: AVFoundation recording has consistent intermittent frame drops
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Reporter: LordHDL | Owner: mateo
Type: defect | Status: open
Priority: normal | Component: avdevice
Version: git-master | Resolution:
Keywords: avfoundation | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by LordHDL):
Here's a test without the `-vf` option:
https://www.dropbox.com/s/a982jatnw7n6d45/nofilter.tar.xz?dl=0
I didn't include the lossless recording since, even compressed via xz, my
connection is far too slow to upload within a reasonable time. But you
can get the idea from the encoded video and included Terminal outputs.
I'm actually surprised the recording is using that much CPU. I thought
lossless was supposed to be more taxing on disk write speed, while
compression depends more on CPU?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4437#comment:7>
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