[FFmpeg-user] High memory usage when merging videos

Nicolas George george at nsup.org
Mon Dec 19 18:15:33 EET 2016

Le nonidi 29 frimaire, an CCXXV, Carl Eugen Hoyos a écrit :
> A patch that I believe is a prerequisite for the improvement was
> just committed:
> http://ffmpeg.org/pipermail/ffmpeg-cvslog/2016-December/103759.html

I am not sure it would help in this discussion, but I have not followed
the details closely.

The changes I am working on would fix the "bufferqueue overflow,
dropping" problems that occur with slightly unbalanced streams, for
example audio streams with tiny frames where you can get a hundred or so
frames in one go.

But it would not fix the really unbalanced cases, because nothing can.

As a rule of thumb, if now adding (a)fifo helps, then the incoming
changes should help.

On the other hand, huge memory consumption is sign of a really
unbalanced stream, and it would not help.


  Nicolas George
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