[FFmpeg-trac] #4437(avdevice:open): AVFoundation recording has consistent intermittent frame drops
FFmpeg
trac at avcodec.org
Wed Nov 11 18:31:39 CET 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: | Blocked By:
avfoundation bounty | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
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Comment (by LordHDL):
As per Thilo's request I'm posting my test results for his mirror here.
This is what I got:
https://www.dropbox.com/s/apkdhi4liixgdl8/avf2.tar.xz?dl=0
Full console outputs included in the archive.
Some observations:
* Recording now forces my device's sample rate to max, which is 192,000
Hz. I'm using Soundflower (2ch) for audio and usually leave it at 48,000.
* Audio is just all static, probably due to the sample rate thing,
although when I use `-ar 48000` it's still static.
* The audio/video queue warning messages are gone.
* Frame rate capture seems unaffected.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4437#comment:29>
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