[FFmpeg-trac] #8319(undetermined:new): Funny little stuff... (x264rgb `pix_fmt`)

FFmpeg trac at avcodec.org
Mon Oct 21 10:14:30 EEST 2019


#8319: Funny little stuff... (x264rgb `pix_fmt`)
-------------------------------------+-------------------------------------
             Reporter:  gdgsdg123    |                     Type:
                                     |  enhancement
               Status:  new          |                 Priority:  minor
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 {{{
 C:\>ffmpeg -i "INPUT.mkv" -an -vframes 1 -c:v libx264rgb -preset ultrafast
 -qp 0 -x264-params "keyint=1" -pix_fmt gbrp -flags +bitexact -fflags
 +bitexact -map_metadata -1 "gbrp.avi"
 ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
   built with gcc 9.1.1 (GCC) 20190807
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
 --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 31.100 / 56. 31.100
   libavcodec     58. 54.100 / 58. 54.100
   libavformat    58. 29.100 / 58. 29.100
   libavdevice    58.  8.100 / 58.  8.100
   libavfilter     7. 57.100 /  7. 57.100
   libswscale      5.  5.100 /  5.  5.100
   libswresample   3.  5.100 /  3.  5.100
   libpostproc    55.  5.100 / 55.  5.100
 [matroska,webm @ 0000000000511fc0] decoding for stream 0 failed
 Input #0, matroska,webm, from 'INPUT.mkv':
   Metadata:
     ENCODER         : Lavf58.26.101
   Duration: 00:01:27.30, start: 0.000000, bitrate: 563262 kb/s
     Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(tv,
 gbr/unknown/unknown, progressive), 5120x1440 [SAR 1:1 DAR 32:9], 30 fps,
 30 tbr, 1k tbn, 60 tbc (default)
     Metadata:
       ENCODER         : Lavc58.47.106 libx264rgb
       DURATION        : 00:01:27.300000000
     Stream #0:1: Audio: flac, 48000 Hz, stereo, s16 (default)
     Metadata:
       ENCODER         : Lavc58.47.106 flac
       DURATION        : 00:01:27.300000000
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264rgb))
 Press [q] to stop, [?] for help
 Incompatible pixel format 'gbrp' for codec 'libx264rgb', auto-selecting
 format 'bgr24'
 [libx264rgb @ 00000000037600c0] using SAR=1/1
 [libx264rgb @ 00000000037600c0] using cpu capabilities: MMX2 SSE2Fast
 SSSE3 SSE4.2 AVX
 [libx264rgb @ 00000000037600c0] profile High 4:4:4 Intra, level 5.1,
 4:4:4, 8-bit
 Output #0, avi, to 'gbrp.avi':
     Stream #0:0: Video: h264 (libx264rgb) (H264 / 0x34363248), bgr24,
 5120x1440 [SAR 1:1 DAR 32:9], q=-1--1, 30 fps, 30 tbn, 30 tbc (default)
     Metadata:
       encoder         : Lavc libx264rgb
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 frame=    1 fps=0.0 q=0.0 Lsize=    6234kB time=00:00:00.03
 bitrate=1532176.8kbits/s speed=0.0531x
 video:6229kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.090181%
 [libx264rgb @ 00000000037600c0] frame I:1     Avg QP: 0.00  size:6378254
 [libx264rgb @ 00000000037600c0] mb I  I16..4: 100.0%  0.0%  0.0%
 [libx264rgb @ 00000000037600c0] coded y,u,v intra: 99.0% 98.3% 96.7%
 [libx264rgb @ 00000000037600c0] i16 v,h,dc,p: 22% 37% 35%  6%
 [libx264rgb @ 00000000037600c0] kb/s:1530780.88

 C:\>ffprobe -hide_banner "gbrp.avi"
 [avi @ 0000000000463700] Stream #0: not enough frames to estimate rate;
 consider increasing probesize
 [avi @ 0000000000463700] decoding for stream 0 failed
 Input #0, avi, from 'gbrp.avi':
   Duration: 00:00:00.03, start: 0.000000, bitrate: 1532176 kb/s
     Stream #0:0: Video: h264 (High 4:4:4 Intra) (H264 / 0x34363248),
 gbrp(tv, gbr/unknown/unknown, progressive), 5120x1440 [SAR 1:1 DAR 32:9],
 30 fps, 30 tbr, 30 tbn, 60 tbc
 }}}
 [[BR]]
 Highlight:
 {{{
 Incompatible pixel format 'gbrp' for codec 'libx264rgb', auto-selecting
 format 'bgr24'
 }}}
 {{{
     Stream #0:0: Video: h264 (High 4:4:4 Intra) (H264 / 0x34363248),
 gbrp(tv, gbr/unknown/unknown, progressive), 5120x1440 [SAR 1:1 DAR 32:9],
 30 fps, 30 tbr, 30 tbn, 60 tbc
 }}}
 [[BR]]
 [[BR]]
 [[BR]]
 Extra:
 `-pix_fmt bgr24` and `-pix_fmt rgb24` can have bit-identical output... at
 least in the above case.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8319>
FFmpeg <https://ffmpeg.org>
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