[FFmpeg-devel] [PATCH]Support encoding gray8a in pam

[Carl Eugen Hoyos]

Carl Eugen Hoyos <cehoyos <at> ag.or.at> writes:

> Michael Niedermayer <michaelni <at> gmx.at> writes:
> 
> > > Attached patch allows encoding gray8a in pam.
> > > Decoding currently unsupported.
> > 
> > if it has been tested it should be ok
> 
> Patch applied.

This "broke" pam encoding insofar as avcodec_find_best_pix_fmt2() prefers gray8a
over all (?) other pix_fmts...

I don't know how to fix this, Carl Eugen

$ ffmpeg -i out.jpg out.pam
...
Input #0, image2, from 'out.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: mjpeg, yuvj420p, 256x256, 25 tbr, 25 tbn, 25 tbc
Incompatible pixel format 'yuvj420p' for codec 'pam', auto-selecting format
'gray8a'
[buffer @ 0x8dd6aa0] w:256 h:256 pixfmt:yuvj420p tb:1/1000000 sar:0/1 sws_param:
[buffersink @ 0x8dc9100] auto-inserting filter 'auto-inserted scale 0' between
the filter 'src' and the filter 'out'
Impossible to convert between the formats supported by the filter 'auto-inserted
scale 0' and the filter 'out'
Error opening filters!