[FFmpeg-trac] #3794(swscale:new): SWSCALE: Quantization Errors in Y Studio Range
FFmpeg
trac at avcodec.org
Thu Jul 24 21:31:37 CEST 2014
#3794: SWSCALE: Quantization Errors in Y Studio Range
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Reporter: troy_s | Owner:
Type: defect | Status: new
Priority: normal | Component: swscale
Version: git-master | Resolution:
Keywords: range | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by troy_s):
Apologies. Bumped to trunk without aligning the system values.
{{{
./ffmpeg -i ~/Documents/FFMPEG\ Color\ Research/ARIB_STD-B28.png -pix_fmt
yuv444p -vcodec rawvideo -f rawvideo -vf
scale="in_range=full:in_color_matrix=bt709:out_range=mpeg:out_color_matrix=bt709"
test-studio.yuv
ffmpeg version N-64958-gce8e27e Copyright (c) 2000-2014 the FFmpeg
developers
built on Jul 24 2014 10:54:07 with gcc 4.7 (Ubuntu/Linaro
4.7.3-12ubuntu1)
configuration: --enable-gpl --enable-libx264 --enable-shared --disable-
static --enable-pic
libavutil 52. 92.101 / 52. 92.101
libavcodec 55. 69.100 / 55. 69.100
libavformat 55. 49.100 / 55. 49.100
libavdevice 55. 13.102 / 55. 13.102
libavfilter 4. 11.102 / 4. 11.102
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, image2, from '/home/aphorism/Documents/FFMPEG Color
Research/ARIB_STD-B28.png':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 1920x1080 [SAR 2835:2835 DAR 16:9], 25
tbr, 25 tbn, 25 tbc
Output #0, rawvideo, to 'test-studio.yuv':
Metadata:
encoder : Lavf55.49.100
Stream #0:0: Video: rawvideo (444P / 0x50343434), yuv444p, 1920x1080
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc55.69.100 rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (png (native) -> rawvideo (native))
Press [q] to stop, [?] for help
frame= 1 fps=0.0 q=0.0 Lsize= 6075kB time=00:00:00.04
bitrate=1244160.0kbits/s
video:6075kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
}}}
Yields the same difference map and file results.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3794#comment:11>
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