[MPlayer-dev-eng] [PATCH] Re: mencoder -oac copy does not work all the times.

[Giacomo Comes]

On Thu, Jun 30, 2005 at 02:21:05AM +0200, Tobias Diedrich wrote:
> Giacomo Comes wrote on Mon, 17 Jan 2005:
> > I have found that -oac copy produces incorrect results
> > in some particular cases.
> > 
> > Here is a simple way to test the bug;
> > take a dvd with LPCM audio and do:
> > 
> > mencoder dvd://1 -ovc frameno -oac copy -aid 160 -frames 500 -o file.avi
> > 
> > Now play file.avi: mplayer file.avi
> > 
> > You will get only loud noise.
> 
> I propose fixing this by refusing audio streamcopy if
> sh_audio->format does not fit into mux_a->wf->wFormatTag, patch
> attached.

I would like a different patch. If sh_audio->format does not fit into mux_a->wf->wFormatTag
issue a WARNING , but still do audio streamcopy.

I have found a way to play the avi file with the LPCM audio.

I create a fake codec file containing:

audiocodec dvdpcm
  info "Uncompressed DVD/VOB LPCM"
  status working
  format 0x1
  driver dvdpcm

and pass MPlayer the option -codecs-file codec.dummy

It's a hack, but it works.

Giacomo