[FFmpeg-user] Delay in windows screen capture

Carl Zwanzig cpz at tuunq.com
Fri Sep 28 03:46:38 EEST 2018

Following up on my own post, after hours of run time I'm now seeing 
duplicate frames:

More than 10000 frames duplicated=N/A time=27:14:51.09 bitrate=N/A dup=10000 
drop=4 speed=   1x
More than 100000 frames duplicatedN/A time=28:54:06.44 bitrate=N/A dup=99994 
drop=4 speed=   1x
More than 1000000 frames duplicated/A time=39:26:41.25 bitrate=N/A 
dup=999993 drop=4 speed=   1x
frame=4523426 fps= 30 q=-0.0 size=N/A time=41:55:31.64 bitrate=N/A 
dup=1237001 drop=4 speed=   1x

Also, while the windows display still shows a smooth fade between slides, 
the SDI output does not; it now appears to be showing only 3-4 samples per 
second instead of ~~30.

ffmpeg process memory appears stable although it's page faulting on average 
maybe 1200/second; CPU is still low.

Any suggestions on why any of this is happening or what tools would help 
debug it?



More information about the ffmpeg-user mailing list