[FFmpeg-user] Increase ffmpeg memory footprint?

Nicolas George george at nsup.org
Thu Dec 17 20:01:16 CET 2015

Le septidi 27 frimaire, an CCXXIV, Ned Rockson a écrit :
> > > Of course -- I'm constantly receiving warnings
> > > saying "could not allocate memory"
> This is an ffmpeg error message. Just a simple grep returns (among other
> things):
> https://github.com/mpc-hc/FFmpeg/blob/master/libavutil/internal.h#L133

# av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\

"Cannot" and "could not" are not the same thing. Accuracy is paramount when
quoting error messages.

> Full output and other, more detailed information in this gist:
> https://gist.github.com/nedrocks/09afd6a4fa2cd472f17a
> ffmpeg -y -ss 0.846 -i /tmp/f5543c87-77f5-466a-9f9f-4ba8b40fae03.webm -ss
> 1.863 -i /tmp/f6cf2730-bfb3-40e5-aef6-3a03ca24333d.webm -filter_complex
> '[0:v]pad=640*2:480[left];[left][1:v]overlay=x=640+(640-w)/2:y=(480-h)/2;amix'

Having two unconnected graphs in the same graph is not a good idea.

And try using amerge+pan instead of amix; amix may have scheduling problems
that could explain a huge memory consumption.


  Nicolas George
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