[MPlayer-users] Creating DIVX for Xoro HSD 400 with mencoder.

HR haavroed at online.no
Mon Dec 8 11:50:07 CET 2003


> [mailto:mplayer-users-bounces at mplayerhq.hu] On Behalf Of D 
> Richard Felker III
[...]
> On Mon, Dec 08, 2003 at 01:11:02AM +0100, HR wrote:
> > [Automatic answer: RTFM (read DOCS, FAQ), also read 
> DOCS/bugreports.html]
> > > [mailto:mplayer-users-bounces at mplayerhq.hu] On Behalf Of 
> Carsten Koch
[...]
> > > *  Could the  44100 Hz vs. 48000 Hz be the reason for the problem?
> > >     If yes, what are the best mencoder parameters for audio 
> > > resampling to 48kHz?
> > Yes, in general (always?), DVD audio should be 48kHz and 
> (S)VCD audio
> > should be 44.1kHz.
> > 
> > AFAICT from docs and source, mencoder does not support resampling.
> > Resample with lame and '--resample 48000'.
> 
> No, RTFM. Just use -srate.
OMG, so sorry. My bad. I was only looking at the lameopts for
encoding...

> 
> > > *  Any other suggestions what I could try?
> > To summarize; try keyint=125 and resample the audio. If you 
> still have
> > problems, lower the keyint to an insanely low value just to see if
> > that's the problem. 25 for example. Next, try making 
> samples with just
> > the audio and then just the video to find out which doesn't work.
> 
> If 132 is supported (and it's in-spec, so it should be), don't use
> 125! It will just make quality even worse. In fact, try just turning
> off other incompatible options and see if keyint=250 (default) works.
> The player shouldn't refuse to play files because of excessive
> keyframe interval, it just might look bad if their idct is buggy.
> And decreasing keyint will greatly hurt quality (at fixed bitrate).
I know, but I was just throwing some ideas that could be worth *trying*
in order to identify the problem. I agree completely that keyframe int
should not be low, but standalone players don't really care what either
of us thinks.

HR



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