Re: 411P output from ffmpeg?

On Fri, May 02, 2003 at 01:34:06PM -0700, Steven M. Schultz wrote:
> 
> On Fri, 2 May 2003, Roman Shaposhnick wrote:
> 
> > > > > 	Is it possible to get the 411P (for NTSC) data out from a DV file?
> > 
> >     Sure. I'd say, that at least we need to introduce raw<pictureformat>
> >     'codecs' being smart aliases for raw one. Much like we have a bunch 
> >     of pcm* ones. Will this solve your problem ?
> 
> 	That's be great!   It's not a "priority" of course.   For
> 	experimentation it'd be a good thing to have the raw 4:1:1 (for
> 	NTSC, I believe PAL-DV uses 4:2:0) data.

   Ok. The changes just went into the CVS. They actually, turned out quite
   useful for my own stuff as well. Anyway, please try them out. The 
   following now works:

      $ ./ffmpeg -i /export/DV/tests/type2.avi -an out.yuv
      Input #0, avi, from '/net/submarine/export/DV/tests/type2.avi':
        Stream #0.0: Video: dvvideo, 720x576, 25.00 fps, 800 kb/s
	Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo, 1536 kb/s
      Output #0, rawvideo, to 'out.yuv':
	Stream #0.0: Video: rawvideo, yuv420p, 720x576, 25.00 fps, q=2-31, 200 kb/s
      Stream mapping:
	Stream #0.0 -> #0.0
      Press [q] to stop encoding
      frame=    1 q=0.0 size=     608kB time=0.0 bitrate=124416.0kbits/s  
      $ ls -l out.yuv
      -rw-rw-r--    1 rvs  users      622080 May  7 12:06 out.yuv

   Or you can play with different pixel formats using new -pix_fmt option:

      $ ./ffmpeg -i /export/DV/tests/type2.avi -an -pix_fmt yuv411p out.yuv
     Input #0, avi, from '/net/submarine/export/DV/tests/type2.avi':
       Stream #0.0: Video: dvvideo, 720x576, 25.00 fps, 800 kb/s
       Stream #0.1: Audio: pcm_s16le, 48000 Hz, stereo, 1536 kb/s
     Output #0, rawvideo, to 'out.yuv':
       Stream #0.0: Video: rawvideo, yuv411p, 720x576, 25.00 fps, q=2-31, 200 kb/s
     Stream mapping:
       Stream #0.0 -> #0.0
     Press [q] to stop encoding
     frame=    1 q=0.0 size=     608kB time=0.0 bitrate=124416.0kbits/s   

Thanks,
Roman.

-------------------------------------------------------
Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara
The only event dedicated to issues related to Linux enterprise solutions
www.enterpriselinuxforum.com