[FFmpeg-trac] #2407(swscale:new): Conversion from yuv to RGB leads to broken gradients and colors.
FFmpeg
trac at avcodec.org
Thu Mar 28 10:48:34 CET 2013
#2407: Conversion from yuv to RGB leads to broken gradients and colors.
------------------------------------+-----------------------------------
Reporter: sun | Owner:
Type: defect | Status: new
Priority: normal | Component: swscale
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+-----------------------------------
Changes (by sun):
* version: 1.2 => git-master
Comment:
Checked on git-master, too.
{{{
ffmpeg -i dnxhd.mov -vcodec libx264 -b:v 100000k -vf format=rgb24
dnxhdconv.mov
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 25 2013 21:47:38 with gcc 4.7 (Ubuntu/Linaro
4.7.2-2ubuntu1)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-
libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora
--enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264
--enable-nonfree --enable-version3 --enable-frei0r --enable-shared
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dnxhd.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf55.0.100
Duration: 00:00:00.53, start: 0.018667, bitrate: 178813 kb/s
Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p10le,
1920x1080, 183500 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
Metadata:
handler_name : DataHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 97 kb/s
Metadata:
handler_name : DataHandler
File 'dnxhdconv.mov' already exists. Overwrite ? [y/N] y
using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
[libx264 @ 0x1009f60] profile High 4:4:4 Predictive, level 4.1, 4:4:4
8-bit
[libx264 @ 0x1009f60] 264 - core 130 r45 b3065e6 - H.264/MPEG-4 AVC codec
- Copyleft 2003-2013 - 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=4 threads=9
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=abr mbtree=1 bitrate=100000
ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mov, to 'dnxhdconv.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf54.63.104
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv444p, 1920x1080,
q=-1--1, 100000 kb/s, 12800 tbn, 25 tbc
Metadata:
handler_name : DataHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
s16, 128 kb/s
Metadata:
handler_name : DataHandler
Stream mapping:
Stream #0:0 -> #0:0 (dnxhd -> libx264)
Stream #0:1 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
frame= 13 fps=5.1 q=32766.0 Lsize= 9196kB time=00:00:00.53
bitrate=141249.5kbits/s
video:9188kB audio:6kB subtitle:0 global headers:0kB muxing overhead
0.018588%
[libx264 @ 0x1009f60] frame I:1 Avg QP: 0.33 size:865603
[libx264 @ 0x1009f60] frame P:3 Avg QP: 0.49 size:796472
[libx264 @ 0x1009f60] frame B:9 Avg QP: 0.69 size:683675
[libx264 @ 0x1009f60] consecutive B-frames: 7.7% 0.0% 0.0% 92.3%
[libx264 @ 0x1009f60] mb I I16..4: 19.7% 34.6% 45.7%
[libx264 @ 0x1009f60] mb P I16..4: 9.8% 25.1% 27.0% P16..4: 12.4% 12.8%
11.0% 0.0% 0.0% skip: 1.7%
[libx264 @ 0x1009f60] mb B I16..4: 2.3% 8.0% 2.0% B16..8: 40.0% 13.1%
11.2% direct:21.1% skip: 2.4% L0:38.5% L1:32.6% BI:28.9%
[libx264 @ 0x1009f60] final ratefactor: -2.14
[libx264 @ 0x1009f60] 8x8 transform intra:45.9% inter:25.7%
[libx264 @ 0x1009f60] coded y,u,v intra: 94.2% 53.6% 65.1% inter: 92.2%
60.7% 70.3%
[libx264 @ 0x1009f60] i16 v,h,dc,p: 22% 16% 51% 11%
[libx264 @ 0x1009f60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 17% 46% 1% 1%
1% 1% 1% 2%
[libx264 @ 0x1009f60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 24% 21% 4% 5%
6% 5% 4% 5%
[libx264 @ 0x1009f60] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1009f60] ref P L0: 69.9% 5.3% 12.4% 12.4%
[libx264 @ 0x1009f60] ref B L0: 90.7% 8.2% 1.1%
[libx264 @ 0x1009f60] ref B L1: 94.4% 5.6%
[libx264 @ 0x1009f60] kb/s:144739.95
}}}
I have to revert the statement that the command
{{{
ffmpeg -i dnxhd.mov -vcodec libx264 -b:v 100000k -vf format=bgr24
dnxhdconv.mov
}}}
wouldn't show the issue.
In fact I have tried the bgr24 conversion with that command before:
{{{
ffmpeg -i dnxhd.mov dnxhdconv.bmp
}}}
Output:
{{{
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 25 2013 21:47:38 with gcc 4.7 (Ubuntu/Linaro
4.7.2-2ubuntu1)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-
libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora
--enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264
--enable-nonfree --enable-version3 --enable-frei0r --enable-shared
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dnxhd.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf55.0.100
Duration: 00:00:00.53, start: 0.018667, bitrate: 178813 kb/s
Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p10le,
1920x1080, 183500 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
Metadata:
handler_name : DataHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 97 kb/s
Metadata:
handler_name : DataHandler
File 'dnxhdconv.bmp' already exists. Overwrite ? [y/N] y
Output #0, image2, to 'dnxhdconv.bmp':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf54.63.104
Stream #0:0(eng): Video: bmp, bgr24, 1920x1080, q=2-31, 200 kb/s, 90k
tbn, 25 tbc
Metadata:
handler_name : DataHandler
Stream mapping:
Stream #0:0 -> #0:0 (dnxhd -> bmp)
Press [q] to stop, [?] for help
[image2 @ 0x1211500] Could not get frame filename number 2 from pattern
'dnxhdconv.bmp' (either set updatefirst or use a pattern like %03d within
the filename pattern)
av_interleaved_write_frame(): Invalid argument
}}}
Which looks good, while doing a conversion to RGB before will look bad.
{{{
ffmpeg -i dnxhd.mov -vf format=rgb24 dnxhdconv.bmp
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 25 2013 21:47:38 with gcc 4.7 (Ubuntu/Linaro
4.7.2-2ubuntu1)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-
libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libspeex --enable-librtmp --enable-libtheora
--enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264
--enable-nonfree --enable-version3 --enable-frei0r --enable-shared
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dnxhd.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf55.0.100
Duration: 00:00:00.53, start: 0.018667, bitrate: 178813 kb/s
Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p10le,
1920x1080, 183500 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
Metadata:
handler_name : DataHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 97 kb/s
Metadata:
handler_name : DataHandler
File 'dnxhdconv.bmp' already exists. Overwrite ? [y/N] y
Output #0, image2, to 'dnxhdconv.bmp':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf54.63.104
Stream #0:0(eng): Video: bmp, bgr24, 1920x1080, q=2-31, 200 kb/s, 90k
tbn, 25 tbc
Metadata:
handler_name : DataHandler
Stream mapping:
Stream #0:0 -> #0:0 (dnxhd -> bmp)
Press [q] to stop, [?] for help
[image2 @ 0x7b3500] Could not get frame filename number 2 from pattern
'dnxhdconv.bmp' (either set updatefirst or use a pattern like %03d within
the filename pattern)
av_interleaved_write_frame(): Invalid argument
}}}
Blender (www.blender.org) also uses libswscale to convert input yuv videos
to PIX_FMT_RGBA and so shows the issue, too.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2407#comment:1>
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