[MEncoder-users] Trying convert to .mov

[Francois Visagie]

> -----Original Message-----
> From: On Behalf Of Ross Clement
> Sent: 05 October 2007 14:05
> 
> On 10/5/07, Francois Visagie <fvisagie at za.spescom.com> wrote:
> >
> > As I understand it, it shouldn't make _any_ difference - 
> vmax_b_frames 
> > is the default, unless you modified either your version 
> and/or set it 
> > up differently in the .conf.
> >
> > Have you read the manual section on producing QuickTime 
> files? And in 
> > all of the documentation there's a wealth of information on 
> ensuring 
> > correct frame rate, in case that's the case of the problem.
> 
> I also thought that the vmax_b_frames defaults to zero. I 
> didn't modify my version of the .conf file, but it seemed to 
> make a difference for one file.
> Not sure why.
> 
> The pages in the Mencoder documentation on creating quicktime 
> files specify the use of mp4creator, an external program. I 
> couldn't compile mp4creator on my machine as it died with an 
> error. I have only just now managed to compile it, by 
> commenting out an offending line in one of the source files. 
> I'll give it a go, but don't know the full consequences, if 
> any, of not having that line.
> 
> Otherwise, it looks like I will be using Adobe Premiere. Not 
> my best option as I have limited access to it.

To check the default B-frames behaviour, specify -lavcopts psnr. At the end
of the pass it prints to the console the final PSNR value, and also logs to
a *.log file PSNR values for individual frames, as well as the frame type at
the end of each line. Very cool, I thought when I first discovered that.

Regards,
Francois





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