[FFmpeg-trac] #10057(undetermined:new): wrong bit depth shown in datascope

[FFmpeg]

#10057: wrong bit depth shown in datascope
-------------------------------------+-------------------------------------
             Reporter:  Michael      |                     Type:  defect
  Koch                               |
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Make a test image with 1024 levels of gray:

 ffmpeg -f lavfi -i color=black:s=32x32,format=gray10le -lavfi
 geq=lum='X+32*Y',format=gray10le -frames 1 -y test.png

 Analyze this test image with showinfo and datascope:

 ffmpeg -i test.png -vf
 format=rgb48,showinfo,datascope=s=1280x1152:mode=color2:format=hex -y
 out.png

 Although showinfo does correctly report 16-bit depth, datascope shows only
 8-bit data with 2-digit hex numbers.

 Known workarounds: Datascope does show correct 16-bit data if "rgb48" is
 replaced by "gbrp16le" or "gray16".

 Below is the console output.

 C:\Users\astro\Desktop\utz>ffmpeg -i test.png -vf
 format=rgb48,showinfo,datascope=s=1280x1152:mode=color2:format=hex -y
 out.png
 ffmpeg version N-109088-g52f7adfbde-20221115 Copyright (c) 2000-2022 the
 FFmpeg developers
   built with gcc 12.2.0 (crosstool-NG 1.25.0.90_cf9beb1)
   configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static
 --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64
 --target-os=mingw32 --enable-version3 --disable-debug --disable-w32threads
 --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-
 libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-
 fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-
 libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom
 --enable-libaribb24 --disable-avisynth --enable-chromaprint --enable-
 libdav1d --disable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec
 --enable-cuda-llvm --disable-frei0r --enable-libgme --enable-libkvazaar
 --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame
 --enable-libopus --enable-librist --enable-libssh --enable-libtheora
 --enable-libvpx --enable-libwebp --enable-lv2 --disable-libmfx --enable-
 libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-
 amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt
 --enable-librav1e --disable-librubberband --enable-schannel --enable-sdl2
 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame
 --enable-libuavs3d --disable-libdrm --disable-vaapi --disable-libvidstab
 --enable-vulkan --enable-libshaderc --enable-libplacebo --disable-libx264
 --disable-libx265 --disable-libxavs2 --disable-libxvid --enable-libzimg
 --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags=
 --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-
 version=20221115
   libavutil      57. 42.100 / 57. 42.100
   libavcodec     59. 52.102 / 59. 52.102
   libavformat    59. 34.101 / 59. 34.101
   libavdevice    59.  8.101 / 59.  8.101
   libavfilter     8. 50.100 /  8. 50.100
   libswscale      6.  8.112 /  6.  8.112
   libswresample   4.  9.100 /  4.  9.100
 Input #0, png_pipe, from 'test.png':
   Duration: N/A, bitrate: N/A
   Stream #0:0: Video: png, gray16be(pc), 32x32 [SAR 1:1 DAR 1:1], 25 fps,
 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (png (native) -> png (native))
 Press [q] to stop, [?] for help
 [Parsed_showinfo_1 @ 0000028ccd4a3d00] config in time_base: 1/25,
 frame_rate: 25/1
 [Parsed_showinfo_1 @ 0000028ccd4a3d00] config out time_base: 0/0,
 frame_rate: 0/0
 [Parsed_showinfo_1 @ 0000028ccd4a3d00] n:   0 pts:      0 pts_time:0
 duration:      1 duration_time:0.04    pos:        0 fmt:rgb48le sar:1/1
 s:32x32 i:P iskey:1 type:I checksum:96FAF4A5 plane_checksum:[96FAF4A5]
 mean:[32768] stdev:[18937.1]
 [Parsed_showinfo_1 @ 0000028ccd4a3d00] color_range:pc color_space:gbr
 color_primaries:unknown color_trc:unknown
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf59.34.101
   Stream #0:0: Video: png, rgb24(progressive), 1280x1152 [SAR 1:1 DAR
 10:9], q=2-31, 200 kb/s, 25 fps, 25 tbn
     Metadata:
       encoder         : Lavc59.52.102 png
 [image2 @ 0000028ccb86b540] The specified filename 'out.png' does not
 contain an image sequence pattern or a pattern is invalid.
 [image2 @ 0000028ccb86b540] Use a pattern such as %03d for an image
 sequence or use the -update option (with -frames:v 1 if needed) to write a
 single image.
 frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=
 0x
 video:72kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10057>
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