Am 18.04.2020 um 00:54 schrieb Roger Pack:
In my test the FFT method has a shorter delay time than the amultiply
method.
I just found out that the delay can be minimized by setting
-audio_buffer_size to a very small value (10ms).
Delay is now about 0.5 seconds. Short enough to see and hear the bats
simultaneously.
Se also https://trac.ffmpeg.org/wiki/DirectShow#BufferingLatency
Yes, that's the same that I found out some time ago by try and error.
In the above article is mentioned a "-rtbufsize" parameter. I can't find
any documentation for it in ffmpeg-all.html
Michael
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