[FFmpeg-trac] #8463(avfilter:new): Screen blending regression
FFmpeg
trac at avcodec.org
Tue Jan 7 15:38:06 EET 2020
#8463: Screen blending regression
----------------------------------+----------------------------------
Reporter: antmarot | Type: defect
Status: new | Priority: normal
Component: avfilter | Version: 4.2
Keywords: blend | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
----------------------------------+----------------------------------
Summary of the bug:
Incorrect resulting colors when using screen blending.
Looks like a regression since it works well in ffmpeg version 3.2.10 but
does not work in ffmpeg version 4.2.1.
How to reproduce:
{{{
% ffmpeg -filter_complex "color=green:size=hd720,format=rgba[a];
color=black:size=hd720,format=rgba[b]; [a][b]
blend=all_mode=screen,format=yuv422p10le" -pix_fmt yuv420p -t 1
/tmp/test.mp4
}}}
The previous command should produce a green video but the result is purple
(v4.2.1).
v4.2.1 output:
{{{
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.8)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_1 --enable-shared
--enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-
cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include
-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin
-fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls
--enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame
--enable-libopus --enable-librubberband --enable-libsnappy --enable-
libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid
--enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r
--enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr
--enable-videotoolbox --disable-libjack --disable-indev=jack
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
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Stream mapping:
format -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[libx264 @ 0x7ff359001200] using SAR=1/1
[libx264 @ 0x7ff359001200] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7ff359001200] profile High, level 3.1
[libx264 @ 0x7ff359001200] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=22
lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/tmp/test.mp4':
Metadata:
encoder : Lavf58.29.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc58.54.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 25 fps=0.0 q=-1.0 Lsize= 5kB time=00:00:00.88 bitrate=
41.9kbits/s speed=2.52x
video:3kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 33.352619%
[libx264 @ 0x7ff359001200] frame I:1 Avg QP:16.00 size: 672
[libx264 @ 0x7ff359001200] frame P:6 Avg QP:17.00 size: 237
[libx264 @ 0x7ff359001200] frame B:18 Avg QP:19.67 size: 37
[libx264 @ 0x7ff359001200] consecutive B-frames: 4.0% 0.0% 0.0% 96.0%
[libx264 @ 0x7ff359001200] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x7ff359001200] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 16.3%
0.0% 0.0% 0.0% 0.0% skip:83.7%
[libx264 @ 0x7ff359001200] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0%
0.0% 0.0% direct: 0.0% skip:100.0%
[libx264 @ 0x7ff359001200] 8x8 transform intra:0.0%
[libx264 @ 0x7ff359001200] coded y,uvDC,uvAC intra: 0.0% 0.0% 0.0% inter:
0.0% 4.1% 0.0%
[libx264 @ 0x7ff359001200] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x7ff359001200] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7ff359001200] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7ff359001200] kb/s:22.14
}}}
v3.2.10 output:
{{{
ffmpeg version 3.2.10-1~deb9u1~bpo8+1 Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/usr --extra-version='1~deb9u1~bpo8+1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --disable-libebur128 --enable-libflite --enable-
libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme
--enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-
libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband
--enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex
--enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
--enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-
openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-
libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv
--enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
File '/tmp/test.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x55cab3d60cc0] using SAR=1/1
[libx264 @ 0x55cab3d60cc0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x55cab3d60cc0] profile High, level 3.1
[libx264 @ 0x55cab3d60cc0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC
codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6
lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/tmp/test.mp4':
Metadata:
encoder : Lavf57.56.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p,
1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.64.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
format -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
frame= 25 fps= 16 q=-1.0 Lsize= 3kB time=00:00:00.88 bitrate=
31.3kbits/s speed=0.572x
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 50.349346%
[libx264 @ 0x55cab3d60cc0] frame I:1 Avg QP:15.00 size: 672
[libx264 @ 0x55cab3d60cc0] frame P:6 Avg QP:16.83 size: 43
[libx264 @ 0x55cab3d60cc0] frame B:18 Avg QP:19.67 size: 37
[libx264 @ 0x55cab3d60cc0] consecutive B-frames: 4.0% 0.0% 0.0% 96.0%
[libx264 @ 0x55cab3d60cc0] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x55cab3d60cc0] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0%
0.0% 0.0% 0.0% 0.0% skip:100.0%
[libx264 @ 0x55cab3d60cc0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0%
0.0% 0.0% direct: 0.0% skip:100.0%
[libx264 @ 0x55cab3d60cc0] 8x8 transform intra:0.0%
[libx264 @ 0x55cab3d60cc0] coded y,uvDC,uvAC intra: 0.0% 0.0% 0.0% inter:
0.0% 0.0% 0.0%
[libx264 @ 0x55cab3d60cc0] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x55cab3d60cc0] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x55cab3d60cc0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x55cab3d60cc0] kb/s:12.81
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8463>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list