Hi ffmpeg-user,
In some cases I've been using -vf and -filter_complex interchangeability but
notice that some behavior is unexpectedly different.
For instance if I use format=yuv422p10le within -vf and within -filter_complex
the output is different. Is there something else I should add to the
filterchain to get consistent results.
Below is the output of:
ffmpeg -f lavfi -i testsrc2=r=1:d=5 -vf format=yuv422p10le -f
framemd5 -
and
ffmpeg -f lavfi -i testsrc2=r=1:d=5 -filter_complex format=yuv422p10le -f
framemd5 -
The output framemd5 do not match and there is not minor differences in the
pixel values. Is this expected? Any recommendations to get the same result when
using format=yuv422p10le in both -vf and -filter_complex? Which output is
correct?
ffmpeg -f lavfi -i testsrc2=r=1:d=5 -vf format=yuv422p10le -f framemd5 -
ffmpeg version N-47211-g164e277326 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 8.1.0 (clang-802.0.38)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-164e277 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay
--enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtesseract
--enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl
--disable-lzma --enable-vda
libavutil 55. 62.100 / 55. 62.100
libavcodec 57. 95.100 / 57. 95.100
libavformat 57. 72.101 / 57. 72.101
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 88.100 / 6. 88.100
libavresample 3. 6. 0 / 3. 6. 0
libswscale 4. 7.101 / 4. 7.101
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[opencl @ 0x10fe94d68] Same kernel code has been registered
Last message repeated 1 times
Input #0, lavfi, from 'testsrc2=r=1:d=5':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1
DAR 4:3], 1 fps, 1 tbr, 1 tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
#format: frame checksums
#version: 2
#hash: MD5
#software: Lavf57.72.101
#tb 0: 1/1
#media_type 0: video
#codec_id 0: rawvideo
#dimensions 0: 320x240
#sar 0: 1/1
#stream#, dts, pts, duration, size, hash
Output #0, framemd5, to 'pipe:':
Metadata:
encoder : Lavf57.72.101
Stream #0:0: Video: rawvideo (Y3[10][10] / 0xA0A3359), yuv422p10le, 320x240
[SAR 1:1 DAR 4:3], q=2-31, 1536 kb/s, 1 fps, 1 tbn, 1 tbc
Metadata:
encoder : Lavc57.95.100 rawvideo
0, 0, 0, 1, 307200, b8ef3d6c4fc96d70fafbf20afd8f9cdf
0, 1, 1, 1, 307200, dada36d572dfe9b75b799b207e54590b
0, 2, 2, 1, 307200, f6b2bd8a2cafbe7261bd97cd41930ad3
0, 3, 3, 1, 307200, 5efbf76a4e8af59271de6a3e8cfb63f4
0, 4, 4, 1, 307200, f2289ce67d1f24230cee1219dc2557a5
frame= 5 fps=0.0 q=-0.0 Lsize= 1kB time=00:00:05.00 bitrate=
1.0kbits/s speed= 754x
video:1500kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: unknown
ffmpeg -f lavfi -i testsrc2=r=1:d=5 -filter_complex format=yuv422p10le -f
framemd5 -
ffmpeg version N-47211-g164e277326 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 8.1.0 (clang-802.0.38)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-164e277 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay
--enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtesseract
--enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl
--disable-lzma --enable-vda
libavutil 55. 62.100 / 55. 62.100
libavcodec 57. 95.100 / 57. 95.100
libavformat 57. 72.101 / 57. 72.101
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 88.100 / 6. 88.100
libavresample 3. 6. 0 / 3. 6. 0
libswscale 4. 7.101 / 4. 7.101
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[opencl @ 0x1026d6d68] Same kernel code has been registered
Last message repeated 1 times
Input #0, lavfi, from 'testsrc2=r=1:d=5':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1
DAR 4:3], 1 fps, 1 tbr, 1 tbn, 1 tbc
Stream mapping:
Stream #0:0 (rawvideo) -> format
format -> Stream #0:0 (rawvideo)
Press [q] to stop, [?] for help
#format: frame checksums
#version: 2
#hash: MD5
#software: Lavf57.72.101
#tb 0: 1/1
#media_type 0: video
#codec_id 0: rawvideo
#dimensions 0: 320x240
#sar 0: 1/1
#stream#, dts, pts, duration, size, hash
Output #0, framemd5, to 'pipe:':
Metadata:
encoder : Lavf57.72.101
Stream #0:0: Video: rawvideo (Y3[10][10] / 0xA0A3359), yuv422p10le, 320x240
[SAR 1:1 DAR 4:3], q=2-31, 1536 kb/s, 1 fps, 1 tbn, 1 tbc
Metadata:
encoder : Lavc57.95.100 rawvideo
0, 0, 0, 1, 307200, e7fa6a19f1f6cc2a146b099cf0f7d9a5
0, 1, 1, 1, 307200, 1191d0f7b6341fa98b1e6e2feac0608a
0, 2, 2, 1, 307200, 5acfb73352874db79a82064515069b79
0, 3, 3, 1, 307200, 73e8573563a04c2d652905dd8a4654a0
0, 4, 4, 1, 307200, ec3a90bdf9325ca721df12edc08d3403
frame= 5 fps=0.0 q=-0.0 Lsize= 1kB time=00:00:05.00 bitrate=
1.0kbits/s speed= 771x
video:1500kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: unknown
Best Regards,
Dave Rice
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