[FFmpeg-user] Possible to set color_range on the command line for mjpeg?

[Paul B Mahol]

Dana 25. 8. 2015. 17:50 osoba "Robert Krüger" <krueger at lesspain.de>
napisala je:
>
> Hi,
>
> for the purpose of debugging something in the libraries and submitting a
> corresponding bug report, I would like to specify the color_range of the
> codec context on the command line, i.e. in this case I want to create an
> mjpeg file with full range without using the deprecated yuvj pixel
formats.
>
> I tried this here:
>
> ffmpeg -i
> ~/lesspain/samples/software/fcp_7/xdcam_ex/fcp7_xdcam_ex_1080_25p_1s.mov
> -vf scale=out_range=full -c:v mjpeg -an -pix_fmt yuv444p
> mjpeg-fullrange-ffmpeg-noyuvj.mov
> ffmpeg version N-74034-gce46627 Copyright (c) 2000-2015 the FFmpeg
> developers
>   built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM
> 3.6.0svn)
>   configuration: --enable-gpl --enable-libx264
>   libavutil      54. 29.100 / 54. 29.100
>   libavcodec     56. 55.100 / 56. 55.100
>   libavformat    56. 40.101 / 56. 40.101
>   libavdevice    56.  4.100 / 56.  4.100
>   libavfilter     5. 29.100 /  5. 29.100
>   libswscale      3.  1.101 /  3.  1.101
>   libswresample   1.  2.101 /  1.  2.101
>   libpostproc    53.  3.100 / 53.  3.100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fddd181bc00] nclc: pri 1 trc 1 matrix
> 1Guessed Channel Layout for  Input Stream #0.1 : stereo
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
>
'/Users/krueger/lesspain/samples/software/fcp_7/xdcam_ex/fcp7_xdcam_ex_1080_25p_1s.mov':
>   Metadata:
>     major_brand     : qt
>     minor_version   : 537199360
>     compatible_brands: qt
>     creation_time   : 2013-12-11 15:38:12
>   Duration: 00:00:01.00, start: 0.000000, bitrate: 25365 kb/s
>     Stream #0:0(eng): Video: mpeg2video (Main) (xdve / 0x65766478),
> yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 23773 kb/s, 25 fps, 25
> tbr, 25 tbn, 50 tbc (default)
>     Metadata:
>       creation_time   : 2013-12-11 15:38:12
>       handler_name    : Apple Alias-Datensteuerung
>       encoder         : XDCAM EX 1080p25 (35 Mb/s VBR)
>       timecode        : 01:00:00:00
>     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, 2
> channels, s16, 1536 kb/s (default)
>     Metadata:
>       creation_time   : 2013-12-11 15:38:12
>       handler_name    : Apple Alias-Datensteuerung
>     Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
>     Metadata:
>       creation_time   : 2013-12-11 15:38:16
>       handler_name    : Apple Alias-Datensteuerung
>       timecode        : 01:00:00:00
> Incompatible pixel format 'yuv444p' for codec 'mjpeg', auto-selecting
> format 'yuvj444p'
> [swscaler @ 0x7fddd104a000] deprecated pixel format used, make sure you
did
> set range correctly
> Output #0, mov, to 'mjpeg-fullrange-ffmpeg-noyuvj.mov':
>   Metadata:
>     major_brand     : qt
>     minor_version   : 537199360
>     compatible_brands: qt
>     encoder         : Lavf56.40.101
>     Stream #0:0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj444p(pc),
> 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc
> (default)
>     Metadata:
>       creation_time   : 2013-12-11 15:38:12
>       handler_name    : Apple Alias-Datensteuerung
>       timecode        : 01:00:00:00
>       encoder         : Lavc56.55.100 mjpeg
> Stream mapping:
>   Stream #0:0 -> #0:0 (mpeg2video (native) -> mjpeg (native))
> Press [q] to stop, [?] for help
> frame=   24 fps=0.0 q=24.8 size=    2066kB time=00:00:00.96
> bitrate=17626.5kbitsframe=   25 fps=0.0 q=24.8 Lsize=    2147kB
> time=00:00:01.00 bitrate=17589.0kbits/s
> video:2146kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: 0.067178%
>
> but obviously the mjpeg encoder refuses the pixel format although it
should
> not do this if the deprecated pixel formats are really not to be used. Am
I
> missing something or is the mjpeg encoder simply not capable yet of
working
> with color_range instead of the deprecated yuvj pixel formats?

Nobody yet sent patch to fix it.

>
> Thanks in advance,
>
> Robert
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