[FFmpeg-user] FFMPEG initial analysing delay
isambhav at gmail.com
Tue Sep 6 11:39:47 CEST 2011
I am trying to combine h264 elementray video bitstream and AMR audio
bitstream into a 3gp container.
Both audio and video is read from pipes. My application writes data into the
pipe in realtime.
ffmpeg -analyzeduration 0 -i vpipe -analyzeduration 0 -i apipe -vcodec
copy -acodec copy output.3gp
It is taking around 2-3 seconds for the audio input(apipe) to be analysed
after which it prints the input properties and then the actual packing into
the container starts.
When "-analyzeduration 0 " is given, it almost takes 10sec to analyse the
Is this the expected behaviour, or am I missing any parameter for it to
start analyzing input without the initial huge delay ?
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