[FFmpeg-user] Unable to transcode yuv420p file

[Atish Kathpal]

Thankyou for useful insight.

Atish

On Thu, Jan 12, 2012 at 3:24 PM, Stefano Sabatini <stefasab at gmail.com>wrote:

> On date Thursday 2012-01-12 12:18:35 +0530, Atish Kathpal encoded:
> > Hello
> >
> > I am unable to transcode any yuv420p file using ffmpeg. I am also unable
> to
> > extract any information about the file using ffmpeg -i <file> command.
> VLC
> > is showing random color lines on playing the yuv file. Any pointers on
> how
> > I could make this work?
> >
> > ffmpeg -i T2V0041102_Big_Ben_160x600p.yuv -vcodec mpeg4 out.mp4
> > ffmpeg version git-2012-01-10-7e2ba2d Copyright (c) 2000-2012 the FFmpeg
> > developers
> >   built on Jan 10 2012 12:01:19 with gcc 4.6.1
> >   configuration: --enable-gpl --enable-libfaac --enable-libmp3lame
> > --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora
> > --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc
> > --enable-version3 --enable-x11grab
> >   libavutil      51. 34.100 / 51. 34.100
> >   libavcodec     53. 54.100 / 53. 54.100
> >   libavformat    53. 29.100 / 53. 29.100
> >   libavdevice    53.  4.100 / 53.  4.100
> >   libavfilter     2. 58.100 /  2. 58.100
> >   libswscale      2.  1.100 /  2.  1.100
> >   libswresample   0.  6.100 /  0.  6.100
> >   libpostproc    51.  2.100 / 51.  2.100
>
> > [IMGUTILS @ 0x7fffe20fa650] Picture size 0x0 is invalid
> > [IMGUTILS @ 0x7fffe20fa550] Picture size 0x0 is invalid
> > [rawvideo @ 0x35447e0] Could not find codec parameters (Video: rawvideo,
> > yuv420p)
>
> This is a rawvideo yuv file so you need to specify manually the input
> parameters, or ffmpeg won't know how to figure out it. Check the
> rawvideo demuxer options:
>
> rawvideo demuxer AVOptions:
> -video_size        <string> .D... A string describing frame size, such as
> 640x480 or hd720.
> -pixel_format      <string> .D...
> -framerate         <string> .D...
>
> [...]
> --
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