[FFmpeg-trac] #4518(avcodec:new): Bad pix_fmt decision if input is gray but only yuv4xx is supported
FFmpeg
trac at avcodec.org
Mon Apr 27 12:22:57 CEST 2015
#4518: Bad pix_fmt decision if input is gray but only yuv4xx is supported
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Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: minor | Component: avcodec
Version: git-master | Keywords:
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
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I believe that yuv420p is the better pix_fmt if the input is gray and only
yuv4xx are supported.
{{{
$ ffmpeg -i fate-suite/lena.pnm -vf format=gray out.jpg
ffmpeg version N-71727-g46778ab Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 54. 23.101 / 54. 23.101
libavcodec 56. 35.101 / 56. 35.101
libavformat 56. 31.100 / 56. 31.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 14.100 / 5. 14.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, image2, from 'fate-suite/lena.pnm':
Duration: 00:00:00.04, start: 0.000000, bitrate: 39333 kb/s
Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
[swscaler @ 0x2470100] deprecated pixel format used, make sure you did set
range correctly
Output #0, image2, to 'out.jpg':
Metadata:
encoder : Lavf56.31.100
Stream #0:0: Video: mjpeg, yuvj444p(pc), 256x256, q=2-31, 200 kb/s, 25
fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc56.35.101 mjpeg
Stream mapping:
Stream #0:0 -> #0:0 (ppm (native) -> mjpeg (native))
Press [q] to stop, [?] for help
frame= 1 fps=0.0 q=4.1 Lsize=N/A time=00:00:00.04 bitrate=N/A
video:11kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
}}}
Also reproducible with h264 output.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4518>
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