[FFmpeg-devel] [PATCH] Clip-Wrapped MXF support (attempt #4)

Reimar Döffinger Reimar.Doeffinger
Thu Jan 27 20:22:05 CET 2011

On Thu, Jan 27, 2011 at 09:25:50AM +0200, Maksym Veremeyenko wrote:
> Reimar D?ffinger ???????(??):
> >On Wed, Jan 26, 2011 at 11:11:29AM +0200, Maksym Veremeyenko wrote:
> [...]
> >>does 1440000 bytes block is good enough - that magic count odd to
> >>DV25...50 frames...
> >
> >Performance-wise it's suboptimal, it is not even a multiple a page
> >size, and for network file systems a multiple of 32 kB would be better.
> what value would you prefer?

I would think 64 kB (i.e. 64*1024) might be a good compromise,
but honestly it doesn't matter that much I think.
And I'd also consider to use this value when the edit unit is
1, if for no other reason that it's done for AVI, but someone
who actually read the MXF spec can give a more useful opinion on that.

More information about the ffmpeg-devel mailing list