Hi ffmpeg-user,

I'm trying to benchmark a filterchain that includes multimedia filters (in this 
case with audio input and video output), but I'm having trouble finding a way 
to start and stop the benchmarking. For instance with this command, I need 
abench before the filter since it's audio and bench afterwards since it is 
video, but no benchmarking info is logged.

ffprobe -f lavfi -i sine=d=1,abench=start,showvolume,bench=stop -show_frames

If I use an audio or video filter, then I can get benchmarking data, such as 
with 
ffprobe -f lavfi -i sine=d=1,abench=start,aecho=0.8:0.88:60:0.4,abench=stop 
-show_frames

So is there a way to benchmark an A->V filter?

Dave Rice
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