[MEncoder-users] high quality mjpeg

[RC]

On Wed, 21 Nov 2007 12:37:54 -0500
Morris Beverly <morrisb at avpresentations.com> wrote:

> I have a large (17GB, 1264x421 resolution, 7 minute long) quicktime 
> animation file  that I'm converting to mjpeg format for playing on a
> low  powered system (VIA C7 1.3 Ghz, 1GB ram - this hardware is a
> fixed  requirement). 

I would suggest something like MPEG-4 with keyint=1, instead of MJPEG. 
It should be faster to both encode and decode, and higher quality.

> Using these options:  -lavcopts vcodec=mjpeg:vhq:vbitrate=24000   I'm 
> getting a 700MB file that plays back fine, but is lower quality than I
> would prefer (also this seems to only be about 13 mbits rather than
> the  24 mbits that I intended to get).  

For MJPEG, set vqscale to adjust the quality.  A bitrate doesn't really
make much sense.