Opened 13 years ago
Closed 6 years ago
#1261 closed defect (fixed)
yellowish color with resize and -pix_fmt pal8
Reported by: | ami_stuff | Owned by: | |
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Priority: | normal | Component: | swscale |
Version: | git-master | Keywords: | pal8 |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
not reproducible with -pix_fmt bgr24
C:\>ffmpeg -i 1023.bmp -s 1024x767 -pix_fmt pal8 out.bmp ffmpeg version N-40172-g28c5775 Copyright (c) 2000-2012 the FFmpeg developers built on Apr 28 2012 02:21:26 with gcc 4.5.0 20100414 (Fedora MinGW 4.5.0-1.fc 14) configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch= x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686-pc-min gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-cpudetect --enable-cross-compile --enable-static --disable-shared --extra-libs='-lws2_32 - lwinmm' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snapshots/buil d/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/snapshots/b uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3 --enable-n onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-libopencor e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx libavutil 51. 48.100 / 51. 48.100 libavcodec 54. 16.100 / 54. 16.100 libavformat 54. 3.100 / 54. 3.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 72.100 / 2. 72.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 11.100 / 0. 11.100 libpostproc 52. 0.100 / 52. 0.100 Input #0, image2, from '1023.bmp': Duration: 00:00:00.04, start: 0.000000, bitrate: N/A Stream #0:0: Video: bmp, pal8, 1023x767, 25 tbr, 25 tbn, 25 tbc [buffer @ 0x1dc1fc0] w:1023 h:767 pixfmt:pal8 tb:1/1000000 sar:0/1 sws_param:fla gs=2 [scale @ 0x1dc2180] w:1023 h:767 fmt:pal8 sar:0/1 -> w:1024 h:767 fmt:pal8 sar:0 /1 flags:0x4 Output #0, image2, to 'out.bmp': Metadata: encoder : Lavf54.3.100 Stream #0:0: Video: bmp, pal8, 1024x767, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (bmp -> bmp) Press [q] to stop, [?] for help frame= 1 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.04 bitrate= 0.0kbits/ s video:768kB audio:0kB global headers:0kB muxing overhead -100.000000%
Attachments (2)
Change History (12)
by , 13 years ago
comment:1 by , 12 years ago
follow-up: 3 comment:2 by , 12 years ago
Component: | undetermined → swscale |
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Reproduced by developer: | set |
Status: | new → open |
Version: | unspecified → git-master |
Input palette is black and white only, while output rgb24 pam/bmp is not any more black and white only.
comment:3 by , 12 years ago
Replying to richardpl:
Input palette is black and white only, while output rgb24 pam/bmp is not any more black and white only.
Could you elaborate? The sample command line only produces pal8 output.
comment:4 by , 12 years ago
Sorry, it also happens when going from pal8->pal8. Just add logs to dump palette entries to lavc/bmp.c
comment:5 by , 6 years ago
Keywords: | swscale pal8 added |
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Encountered similar situation when performing a different task...
Build from: https://ffmpeg.zeranoe.com/builds/win64/static/win64/static/ffmpeg-20190330-52d8f35-win64-static.zip
ffmpeg started on 2019-04-01 at 10:38:41 Report written to "ffmpeg-20190401-103841.log" Command line: ffmpeg -report -i "C:\\Image-before-scaling.png" -pix_fmt pal8 -sws_flags bicubic+accurate_rnd -vf "scale=iw*2:ih*2" bicubic_text.png ffmpeg version N-93488-g52d8f35b14 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.2.1 (GCC) 20190212 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. 26.100 / 56. 26.100 libavcodec 58. 47.106 / 58. 47.106 libavformat 58. 26.101 / 58. 26.101 libavdevice 58. 7.100 / 58. 7.100 libavfilter 7. 48.100 / 7. 48.100 libswscale 5. 4.100 / 5. 4.100 libswresample 3. 4.100 / 3. 4.100 libpostproc 55. 4.100 / 55. 4.100 Splitting the commandline. Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'. Reading option '-i' ... matched as input url with argument 'C:\Image-before-scaling.png'. Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'pal8'. Reading option '-sws_flags' ... matched as AVOption 'sws_flags' with argument 'bicubic+accurate_rnd'. Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=iw*2:ih*2'. Reading option 'bicubic_text.png' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option report (generate a report) with argument 1. Successfully parsed a group of options. Parsing a group of options: input url C:\Image-before-scaling.png. Successfully parsed a group of options. Opening an input file: C:\Image-before-scaling.png. [NULL @ 00000000004f1a80] Opening 'C:\Image-before-scaling.png' for reading [file @ 00000000004f3480] Setting default whitelist 'file,crypto' [png_pipe @ 00000000004f1a80] Format png_pipe probed with size=2048 and score=99 [png_pipe @ 00000000004f1a80] Before avformat_find_stream_info() pos: 0 bytes read:716 seeks:0 nb_streams:1 [png_pipe @ 00000000004f1a80] After avformat_find_stream_info() pos: 716 bytes read:716 seeks:0 frames:1 Input #0, png_pipe, from 'C:\Image-before-scaling.png': Duration: N/A, bitrate: N/A Stream #0:0, 1, 1/25: Video: png, pal8(pc), 109x40, 25 tbr, 25 tbn, 25 tbc Successfully opened the file. Parsing a group of options: output url bicubic_text.png. Applying option pix_fmt (set pixel format) with argument pal8. Applying option vf (set video filters) with argument scale=iw*2:ih*2. Successfully parsed a group of options. Opening an output file: bicubic_text.png. Successfully opened the file. detected 16 logical cores Stream mapping: Stream #0:0 -> #0:0 (png (native) -> png (native)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) cur_dts is invalid (this is harmless if it occurs once at the start per stream) [Parsed_scale_0 @ 000000000296f000] Setting 'w' to value 'iw*2' [Parsed_scale_0 @ 000000000296f000] Setting 'h' to value 'ih*2' [Parsed_scale_0 @ 000000000296f000] Setting 'flags' to value 'bicubic' [Parsed_scale_0 @ 000000000296f000] Setting 'sws_flags' to value 'bicubic+accurate_rnd' [Parsed_scale_0 @ 000000000296f000] w:iw*2 h:ih*2 flags:'bicubic' interl:0 [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'video_size' to value '109x40' [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'pix_fmt' to value '11' [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'time_base' to value '1/25' [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'sws_param' to value 'flags=2' [graph 0 input from stream 0:0 @ 0000000002970300] Setting 'frame_rate' to value '25/1' [graph 0 input from stream 0:0 @ 0000000002970300] w:109 h:40 pixfmt:pal8 tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2 [format @ 000000000297a340] Setting 'pix_fmts' to value 'pal8' [AVFilterGraph @ 000000000296e9c0] query_formats: 4 queried, 3 merged, 0 already done, 0 delayed [swscaler @ 000000000297a840] Forcing full internal H chroma due to input having non subsampled chroma [Parsed_scale_0 @ 000000000296f000] w:109 h:40 fmt:pal8 sar:0/1 -> w:218 h:80 fmt:pal8 sar:0/1 flags:0x4 Output #0, image2, to 'bicubic_text.png': Metadata: encoder : Lavf58.26.101 Stream #0:0, 0, 1/25: Video: png, pal8, 218x80, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc58.47.106 png Clipping frame in rate conversion by 0.000008 cur_dts is invalid (this is harmless if it occurs once at the start per stream) cur_dts is invalid (this is harmless if it occurs once at the start per stream) [out_0_0 @ 000000000297a180] EOF on sink link out_0_0:default. No more output streams to write to, finishing. [image2 @ 00000000004f35c0] Opening 'bicubic_text.png' for writing [file @ 000000000299dc00] Setting default whitelist 'file,crypto' [AVIOContext @ 000000000a500780] Statistics: 0 seeks, 1 writeouts frame= 1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A speed= 2.5x video:3kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Input file #0 (C:\Image-before-scaling.png): Input stream #0:0 (video): 1 packets read (716 bytes); 1 frames decoded; Total: 1 packets (716 bytes) demuxed Output file #0 (bicubic_text.png): Output stream #0:0 (video): 1 frames encoded; 1 packets muxed (3380 bytes); Total: 1 packets (3380 bytes) muxed 1 frames successfully decoded, 0 decoding errors [AVIOContext @ 00000000004fb700] Statistics: 716 bytes read, 0 seeks
Files attached.
Reference group from: https://en.wikipedia.org/wiki/Comparison_gallery_of_image_scaling_algorithms
by , 6 years ago
Attachment: | ffmpeg-20190401-103841.7z added |
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comment:6 by , 6 years ago
Keywords: | swscale removed |
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Resolution: | → fixed |
Status: | open → closed |
The original issue was fixed by Michael in a830915b78e2d96f08dc93b2d1c4330448b83ffd, see ticket #3028, work-around was to force full_chroma_int
.
comment:7 by , 6 years ago
Resolution: | fixed |
---|---|
Status: | closed → reopened |
Build from: https://ffmpeg.zeranoe.com/builds/win64/static/ffmpeg-20190331-27c94c5-win64-static.zip
ffmpeg -report -i "C:\Image-before-scaling.png" -pix_fmt pal8 -sws_flags bicubic+accurate_rnd+full_chroma_int -vf scale=iw*2:ih*2 bicubic_text.png
gives bitexact result... (bitexact as previous)
Previous command:
ffmpeg -report -i "C:\Image-before-scaling.png" -pix_fmt pal8 -sws_flags bicubic+accurate_rnd -vf scale=iw*2:ih*2 bicubic_text.png
Log:
ffmpeg started on 2019-04-02 at 04:40:24 Report written to "ffmpeg-20190402-044024.log" Command line: ffmpeg -report -i "C:\\Image-before-scaling.png" -pix_fmt pal8 -sws_flags bicubic+accurate_rnd+full_chroma_int -vf "scale=iw*2:ih*2" bicubic_text.png ffmpeg version N-93506-g27c94c57dc Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.2.1 (GCC) 20190212 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. 26.100 / 56. 26.100 libavcodec 58. 48.100 / 58. 48.100 libavformat 58. 26.101 / 58. 26.101 libavdevice 58. 7.100 / 58. 7.100 libavfilter 7. 48.100 / 7. 48.100 libswscale 5. 4.100 / 5. 4.100 libswresample 3. 4.100 / 3. 4.100 libpostproc 55. 4.100 / 55. 4.100 Splitting the commandline. Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'. Reading option '-i' ... matched as input url with argument 'C:\Image-before-scaling.png'. Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'pal8'. Reading option '-sws_flags' ... matched as AVOption 'sws_flags' with argument 'bicubic+accurate_rnd+full_chroma_int'. Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=iw*2:ih*2'. Reading option 'bicubic_text.png' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option report (generate a report) with argument 1. Successfully parsed a group of options. Parsing a group of options: input url C:\Image-before-scaling.png. Successfully parsed a group of options. Opening an input file: C:\Image-before-scaling.png. [NULL @ 0000000000501a00] Opening 'C:\Image-before-scaling.png' for reading [file @ 00000000005033c0] Setting default whitelist 'file,crypto' [png_pipe @ 0000000000501a00] Format png_pipe probed with size=2048 and score=99 [png_pipe @ 0000000000501a00] Before avformat_find_stream_info() pos: 0 bytes read:716 seeks:0 nb_streams:1 [png_pipe @ 0000000000501a00] After avformat_find_stream_info() pos: 716 bytes read:716 seeks:0 frames:1 Input #0, png_pipe, from 'C:\Image-before-scaling.png': Duration: N/A, bitrate: N/A Stream #0:0, 1, 1/25: Video: png, pal8(pc), 109x40, 25 tbr, 25 tbn, 25 tbc Successfully opened the file. Parsing a group of options: output url bicubic_text.png. Applying option pix_fmt (set pixel format) with argument pal8. Applying option vf (set video filters) with argument scale=iw*2:ih*2. Successfully parsed a group of options. Opening an output file: bicubic_text.png. Successfully opened the file. detected 16 logical cores Stream mapping: Stream #0:0 -> #0:0 (png (native) -> png (native)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) cur_dts is invalid (this is harmless if it occurs once at the start per stream) [Parsed_scale_0 @ 0000000002a4dcc0] Setting 'w' to value 'iw*2' [Parsed_scale_0 @ 0000000002a4dcc0] Setting 'h' to value 'ih*2' [Parsed_scale_0 @ 0000000002a4dcc0] Setting 'flags' to value 'bicubic' [Parsed_scale_0 @ 0000000002a4dcc0] Setting 'sws_flags' to value 'bicubic+accurate_rnd+full_chroma_int' [Parsed_scale_0 @ 0000000002a4dcc0] w:iw*2 h:ih*2 flags:'bicubic' interl:0 [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'video_size' to value '109x40' [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'pix_fmt' to value '11' [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'time_base' to value '1/25' [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'sws_param' to value 'flags=2' [graph 0 input from stream 0:0 @ 0000000002a4efc0] Setting 'frame_rate' to value '25/1' [graph 0 input from stream 0:0 @ 0000000002a4efc0] w:109 h:40 pixfmt:pal8 tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2 [format @ 0000000002a59440] Setting 'pix_fmts' to value 'pal8' [AVFilterGraph @ 0000000002a4d600] query_formats: 4 queried, 3 merged, 0 already done, 0 delayed [Parsed_scale_0 @ 0000000002a4dcc0] w:109 h:40 fmt:pal8 sar:0/1 -> w:218 h:80 fmt:pal8 sar:0/1 flags:0x4 Output #0, image2, to 'bicubic_text.png': Metadata: encoder : Lavf58.26.101 Stream #0:0, 0, 1/25: Video: png, pal8, 218x80, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc58.48.100 png Clipping frame in rate conversion by 0.000008 cur_dts is invalid (this is harmless if it occurs once at the start per stream) cur_dts is invalid (this is harmless if it occurs once at the start per stream) [out_0_0 @ 0000000002a59280] EOF on sink link out_0_0:default. No more output streams to write to, finishing. [image2 @ 0000000000503500] Opening 'bicubic_text.png' for writing [file @ 0000000002a80bc0] Setting default whitelist 'file,crypto' [AVIOContext @ 000000000a329900] Statistics: 0 seeks, 1 writeouts frame= 1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=4.44x video:3kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Input file #0 (C:\Image-before-scaling.png): Input stream #0:0 (video): 1 packets read (716 bytes); 1 frames decoded; Total: 1 packets (716 bytes) demuxed Output file #0 (bicubic_text.png): Output stream #0:0 (video): 1 frames encoded; 1 packets muxed (3380 bytes); Total: 1 packets (3380 bytes) muxed 1 frames successfully decoded, 0 decoding errors [AVIOContext @ 000000000050b640] Statistics: 716 bytes read, 0 seeks
Highlight:
[swscaler @ 000000000297a840] Forcing full internal H chroma due to input having non subsampled chroma
is missing. (comparing to previous log)
Which implied full_chroma_int
are set in both operations.
Off-topic:
What's the difference between full_chroma_int
and full_chroma_inp
?..
And their relationship? (dependencies, etc...)
follow-up: 9 comment:8 by , 6 years ago
Resolution: | → fixed |
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Status: | reopened → closed |
comment:9 by , 6 years ago
Resolution: | fixed |
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Status: | closed → reopened |
Replying to cehoyos:
Build from: https://zeranoe.com/builds/win64/static/ffmpeg-20190402-6aeaac3-win64-static.zip
Not fixed.
Check carefully (zoom 800%), comparing to the reference group from: https://en.wikipedia.org/wiki/Comparison_gallery_of_image_scaling_algorithms
Or change the -pix_fmt pal8
from the above command to -pix_fmt rgb24
then render one, compare them.
comment:10 by , 6 years ago
Resolution: | → fixed |
---|---|
Status: | reopened → closed |
The md5sum for out.bmp is identical for 0.11, 1.0 and current git head: 9f7c293e0940a372c6d897d769b110d4
ffplay out.bmp -fs shows no yellowish colour, several other display methods (gimp, xv, ImageMagick, ffplay without -fs) show some distortion.