[FFmpeg-trac] #8514(avfilter:new): maskedclamp filter output is strange
FFmpeg
trac at avcodec.org
Sat Feb 8 08:54:24 EET 2020
#8514: maskedclamp filter output is strange
-------------------------------------+-------------------------------------
Reporter: nicol | Type: defect
Status: new | Priority: normal
Component: avfilter | Version: git-
| master
Keywords: maskedclamp | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:output ffmpeg 4.2.2 is fine, but
ffmpeg-20200206-343ccfc is strange.
4.2.2 return '''lavfi.signalstats.YLOW=95''',
but ffmpeg-20200206-343ccfc return '''lavfi.signalstats.YLOW=0'''.
How to reproduce:
{{{
% ffmpeg -f lavfi -i color -vf
lutyuv=0:128:128,split=3[0][1][2];[1]lutyuv=100[1a];[0][1a][2]maskedclamp=5:0:1,signalstats,metadata=print:key=lavfi.signalstats.YLOW
-vframes 1 -f null -
ffmpeg version git-2020-02-06-343ccfc Copyright (c) 2000-2020 the FFmpeg
developers
built with gcc 9.2.1 (GCC) 20200122
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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
--enable-amf
libavutil 56. 39.100 / 56. 39.100
libavcodec 58. 68.100 / 58. 68.100
libavformat 58. 38.100 / 58. 38.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 74.100 / 7. 74.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, lavfi, from 'color':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240
[SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
[Parsed_metadata_5 @ 0000028769b458c0] frame:0 pts:0 pts_time:0
[Parsed_metadata_5 @ 0000028769b458c0] lavfi.signalstats.YLOW=0
Output #0, null, to 'pipe:':
Metadata:
encoder : Lavf58.38.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 320x240 [SAR 1:1 DAR
4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc58.68.100 wrapped_avframe
frame= 1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
speed=2.56x
video:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
ffmpeg version: ffmpeg-20200206-343ccfc zeranoe
built on ...: windows
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8514>
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