[FFmpeg-trac] #5321(undetermined:closed): strange SSIM and PSNR
FFmpeg
trac at avcodec.org
Fri Mar 11 02:27:09 CET 2016
#5321: strange SSIM and PSNR
-------------------------------------+-------------------------------------
Reporter: ponpon | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution: invalid
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by ponpon):
thank you for your reply.
i tested "setpts=PTS-STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr".
And i got the correct result only in mkv without audio.
previous test
good: mp4 without audio
bad: mkv without audio, mkv with audio, mp4 with audio, h264
present test
good: mkv without audio
bad: mkv with audio, mp4 without audio, mp4 with audio, h264
i don't understand whether these are normal.
{{{
ffmpeg -y -i test.flv -i libx264_without_a.mkv -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg version N-78980-ga008a7c Copyright (c) 2000-2016 the FFmpeg
developers
built with clang version 3.7.0 (tags/RELEASE_370/final)
configuration: --prefix=/sw --enable-gpl --enable-version3 --enable-
nonfree --enable-pthreads --cc=clang-mp-3.7 --cxx=clang++-mp-3.7
--optflags=-Ofast --target-os=darwin --arch=x86_64 --cpu=corei7-avx
--enable-avresample --enable-libspeex --enable-libvpx --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libfaac --enable-libfdk-aac
--enable-libschroedinger --enable-libmodplug --enable-libxvid --enable-
libopus --enable-lzma --enable-gnutls --enable-fontconfig --enable-
libfribidi --enable-libsmbclient --enable-libopenjpeg --enable-libfreetype
--enable-openssl --enable-libass --enable-libbluray --enable-
libopencore_amrwb --enable-libopencore_amrnb --enable-libx264 --enable-
librtmp --enable-libx265 --enable-opencl --enable-libzimg --enable-
libvidstab --enable-libsoxr --enable-gcrypt --enable-gmp --enable-
libdc1394 --enable-libcaca --enable-libcdio
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 28.100 / 57. 28.100
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.102 / 6. 39.102
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, flv, from 'test.flv':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
Duration: 00:02:15.74, start: 0.000000, bitrate: 340 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 274 kb/s, 29.97 fps, 29.97
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Input #1, matroska,webm, from 'libx264_without_a.mkv':
Metadata:
CANSEEKONTIME : true
STARTTIME : 0
TOTALDURATION : 136
TOTALDATARATE : 340
BYTELENGTH : 5780639
ENCODER : Lavf57.28.100
Duration: 00:02:15.77, start: 0.033000, bitrate: 3252 kb/s
Stream #1:0: Video: h264 (High 4:4:4 Predictive), yuv420p, 426x240,
SAR 1:1 DAR 71:40, 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
Metadata:
ENCODER : Lavc57.28.100 libx264
DURATION : 00:02:15.769000000
Output #0, null, to 'pipe:':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
encoder : Lavf57.28.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:1: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:2: Audio: pcm_s16le, 22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.28.100 pcm_s16le
Stream mapping:
Stream #0:0 (flv) -> setpts (graph 0)
Stream #1:0 (h264) -> ssim:reference (graph 0)
Stream #1:0 (h264) -> psnr:reference (graph 0)
ssim (graph 0) -> Stream #0:0 (wrapped_avframe)
psnr (graph 0) -> Stream #0:1 (wrapped_avframe)
Stream #0:1 -> #0:2 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame= 4068 fps=1697 q=-0.0 Lq=-0.0 size=N/A time=00:02:15.91 bitrate=N/A
speed=56.7x
video:3877kB audio:11707kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[Parsed_psnr_3 @ 0x7f9900700d80] PSNR y:inf u:inf v:inf average:inf
min:inf max:inf
[Parsed_ssim_2 @ 0x7f9900700960] SSIM Y:1.000000 (inf) U:1.000000 (inf)
V:1.000000 (inf) All:1.000000 (inf)
ffmpeg -y -i test.flv -i libx264.mkv -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg version N-78980-ga008a7c Copyright (c) 2000-2016 the FFmpeg
developers
built with clang version 3.7.0 (tags/RELEASE_370/final)
configuration: --prefix=/sw --enable-gpl --enable-version3 --enable-
nonfree --enable-pthreads --cc=clang-mp-3.7 --cxx=clang++-mp-3.7
--optflags=-Ofast --target-os=darwin --arch=x86_64 --cpu=corei7-avx
--enable-avresample --enable-libspeex --enable-libvpx --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libfaac --enable-libfdk-aac
--enable-libschroedinger --enable-libmodplug --enable-libxvid --enable-
libopus --enable-lzma --enable-gnutls --enable-fontconfig --enable-
libfribidi --enable-libsmbclient --enable-libopenjpeg --enable-libfreetype
--enable-openssl --enable-libass --enable-libbluray --enable-
libopencore_amrwb --enable-libopencore_amrnb --enable-libx264 --enable-
librtmp --enable-libx265 --enable-opencl --enable-libzimg --enable-
libvidstab --enable-libsoxr --enable-gcrypt --enable-gmp --enable-
libdc1394 --enable-libcaca --enable-libcdio
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 28.100 / 57. 28.100
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.102 / 6. 39.102
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, flv, from 'test.flv':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
Duration: 00:02:15.74, start: 0.000000, bitrate: 340 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 274 kb/s, 29.97 fps, 29.97
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Input #1, matroska,webm, from 'libx264.mkv':
Metadata:
CANSEEKONTIME : true
STARTTIME : 0
TOTALDURATION : 136
TOTALDATARATE : 340
BYTELENGTH : 5780639
ENCODER : Lavf57.28.100
Duration: 00:02:15.93, start: 0.000000, bitrate: 3306 kb/s
Stream #1:0: Video: h264 (High 4:4:4 Predictive), yuv420p, 426x240,
SAR 1:1 DAR 71:40, 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
Metadata:
ENCODER : Lavc57.28.100 libx264
DURATION : 00:02:15.781000000
Stream #1:1: Audio: vorbis, 22050 Hz, stereo, fltp (default)
Metadata:
ENCODER : Lavc57.28.100 libvorbis
DURATION : 00:02:15.927000000
Output #0, null, to 'pipe:':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
encoder : Lavf57.28.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:1: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:2: Audio: pcm_s16le, 22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.28.100 pcm_s16le
Stream mapping:
Stream #0:0 (flv) -> setpts (graph 0)
Stream #1:0 (h264) -> ssim:reference (graph 0)
Stream #1:0 (h264) -> psnr:reference (graph 0)
ssim (graph 0) -> Stream #0:0 (wrapped_avframe)
psnr (graph 0) -> Stream #0:1 (wrapped_avframe)
Stream #0:1 -> #0:2 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame= 4068 fps=1689 q=-0.0 Lq=-0.0 size=N/A time=00:02:15.91 bitrate=N/A
speed=56.4x
video:3877kB audio:11707kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[Parsed_psnr_3 @ 0x7f83c2500d60] PSNR y:24.091316 u:36.333058 v:35.684405
average:25.680279 min:6.083289 max:inf
[Parsed_ssim_2 @ 0x7f83c2500940] SSIM Y:0.919136 (10.922455) U:0.984409
(18.071169) V:0.983763 (17.894852) All:0.940786 (12.275757)
ffmpeg -y -i test.flv -c:v libx264 -x264opts qp=0 -an
libx264_without_a.mp4
cd "/Users/m/Downloads/2016-03-10/"
ffmpeg -y -i test.flv -i libx264_without_a.mp4 -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg -y -i test.flv -i libx264_without_a.mp4 -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg version N-78980-ga008a7c Copyright (c) 2000-2016 the FFmpeg
developers
built with clang version 3.7.0 (tags/RELEASE_370/final)
configuration: --prefix=/sw --enable-gpl --enable-version3 --enable-
nonfree --enable-pthreads --cc=clang-mp-3.7 --cxx=clang++-mp-3.7
--optflags=-Ofast --target-os=darwin --arch=x86_64 --cpu=corei7-avx
--enable-avresample --enable-libspeex --enable-libvpx --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libfaac --enable-libfdk-aac
--enable-libschroedinger --enable-libmodplug --enable-libxvid --enable-
libopus --enable-lzma --enable-gnutls --enable-fontconfig --enable-
libfribidi --enable-libsmbclient --enable-libopenjpeg --enable-libfreetype
--enable-openssl --enable-libass --enable-libbluray --enable-
libopencore_amrwb --enable-libopencore_amrnb --enable-libx264 --enable-
librtmp --enable-libx265 --enable-opencl --enable-libzimg --enable-
libvidstab --enable-libsoxr --enable-gcrypt --enable-gmp --enable-
libdc1394 --enable-libcaca --enable-libcdio
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 28.100 / 57. 28.100
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.102 / 6. 39.102
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, flv, from 'test.flv':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
Duration: 00:02:15.74, start: 0.000000, bitrate: 340 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 274 kb/s, 29.97 fps, 29.97
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'libx264_without_a.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.28.100
Duration: 00:02:15.77, start: 0.000000, bitrate: 3251 kb/s
Stream #1:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 /
0x31637661), yuv420p, 426x240, 3250 kb/s, 29.97 fps, 29.97 tbr, 30k tbn,
59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Output #0, null, to 'pipe:':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
encoder : Lavf57.28.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:1: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:2: Audio: pcm_s16le, 22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.28.100 pcm_s16le
Stream mapping:
Stream #0:0 (flv) -> setpts (graph 0)
Stream #1:0 (h264) -> ssim:reference (graph 0)
Stream #1:0 (h264) -> psnr:reference (graph 0)
ssim (graph 0) -> Stream #0:0 (wrapped_avframe)
psnr (graph 0) -> Stream #0:1 (wrapped_avframe)
Stream #0:1 -> #0:2 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame= 4068 fps=1684 q=-0.0 Lq=-0.0 size=N/A time=00:02:15.91 bitrate=N/A
speed=56.2x
video:3877kB audio:11707kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[Parsed_psnr_3 @ 0x7ffe8a700d80] PSNR y:27.102515 u:39.464014 v:38.874252
average:28.696125 min:6.083989 max:inf
[Parsed_ssim_2 @ 0x7ffe8a700960] SSIM Y:0.951372 (13.131097) U:0.991440
(20.675277) V:0.991159 (20.534846) All:0.964681 (14.519899)
ffmpeg -y -i test.flv -i libx264.mp4 -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg version N-78980-ga008a7c Copyright (c) 2000-2016 the FFmpeg
developers
built with clang version 3.7.0 (tags/RELEASE_370/final)
configuration: --prefix=/sw --enable-gpl --enable-version3 --enable-
nonfree --enable-pthreads --cc=clang-mp-3.7 --cxx=clang++-mp-3.7
--optflags=-Ofast --target-os=darwin --arch=x86_64 --cpu=corei7-avx
--enable-avresample --enable-libspeex --enable-libvpx --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libfaac --enable-libfdk-aac
--enable-libschroedinger --enable-libmodplug --enable-libxvid --enable-
libopus --enable-lzma --enable-gnutls --enable-fontconfig --enable-
libfribidi --enable-libsmbclient --enable-libopenjpeg --enable-libfreetype
--enable-openssl --enable-libass --enable-libbluray --enable-
libopencore_amrwb --enable-libopencore_amrnb --enable-libx264 --enable-
librtmp --enable-libx265 --enable-opencl --enable-libzimg --enable-
libvidstab --enable-libsoxr --enable-gcrypt --enable-gmp --enable-
libdc1394 --enable-libcaca --enable-libcdio
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 28.100 / 57. 28.100
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.102 / 6. 39.102
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, flv, from 'test.flv':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
Duration: 00:02:15.74, start: 0.000000, bitrate: 340 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 274 kb/s, 29.97 fps, 29.97
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'libx264.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.28.100
Duration: 00:02:15.96, start: 0.046440, bitrate: 3381 kb/s
Stream #1:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 /
0x31637661), yuv420p, 426x240, 3250 kb/s, 29.97 fps, 29.97 tbr, 30k tbn,
59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz,
stereo, fltp, 131 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, null, to 'pipe:':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
encoder : Lavf57.28.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:1: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:2: Audio: pcm_s16le, 22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.28.100 pcm_s16le
Stream mapping:
Stream #0:0 (flv) -> setpts (graph 0)
Stream #1:0 (h264) -> ssim:reference (graph 0)
Stream #1:0 (h264) -> psnr:reference (graph 0)
ssim (graph 0) -> Stream #0:0 (wrapped_avframe)
psnr (graph 0) -> Stream #0:1 (wrapped_avframe)
Stream #0:1 -> #0:2 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame= 4068 fps=1709 q=-0.0 Lq=-0.0 size=N/A time=00:02:15.91 bitrate=N/A
speed=57.1x
video:3877kB audio:11707kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[Parsed_psnr_3 @ 0x7f9203600d80] PSNR y:22.417777 u:34.467720 v:33.790665
average:24.000120 min:6.083333 max:inf
[Parsed_ssim_2 @ 0x7f9203600960] SSIM Y:0.896930 (9.868672) U:0.978251
(16.625703) V:0.977157 (16.412444) All:0.923855 (11.183568)
ffmpeg -y -i test.flv -i libx264_without_a.h264 -lavfi "setpts=PTS-
STARTPTS,split=2[a][b],[a][1:v]ssim;[b][1:v]psnr" -f null -
ffmpeg version N-78980-ga008a7c Copyright (c) 2000-2016 the FFmpeg
developers
built with clang version 3.7.0 (tags/RELEASE_370/final)
configuration: --prefix=/sw --enable-gpl --enable-version3 --enable-
nonfree --enable-pthreads --cc=clang-mp-3.7 --cxx=clang++-mp-3.7
--optflags=-Ofast --target-os=darwin --arch=x86_64 --cpu=corei7-avx
--enable-avresample --enable-libspeex --enable-libvpx --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libfaac --enable-libfdk-aac
--enable-libschroedinger --enable-libmodplug --enable-libxvid --enable-
libopus --enable-lzma --enable-gnutls --enable-fontconfig --enable-
libfribidi --enable-libsmbclient --enable-libopenjpeg --enable-libfreetype
--enable-openssl --enable-libass --enable-libbluray --enable-
libopencore_amrwb --enable-libopencore_amrnb --enable-libx264 --enable-
librtmp --enable-libx265 --enable-opencl --enable-libzimg --enable-
libvidstab --enable-libsoxr --enable-gcrypt --enable-gmp --enable-
libdc1394 --enable-libcaca --enable-libcdio
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 28.100 / 57. 28.100
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.102 / 6. 39.102
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, flv, from 'test.flv':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
Duration: 00:02:15.74, start: 0.000000, bitrate: 340 kb/s
Stream #0:0: Video: flv1, yuv420p, 426x240, 274 kb/s, 29.97 fps, 29.97
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
Input #1, h264, from 'libx264_without_a.h264':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: h264 (High 4:4:4 Predictive), yuv420p, 426x240,
29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
Output #0, null, to 'pipe:':
Metadata:
starttime : 0
totalduration : 136
totaldatarate : 340
bytelength : 5780639
canseekontime : true
encoder : Lavf57.28.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:1: Video: wrapped_avframe, yuv420p, 426x240, q=2-31, 200
kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc57.28.100 wrapped_avframe
Stream #0:2: Audio: pcm_s16le, 22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.28.100 pcm_s16le
Stream mapping:
Stream #0:0 (flv) -> setpts (graph 0)
Stream #1:0 (h264) -> ssim:reference (graph 0)
Stream #1:0 (h264) -> psnr:reference (graph 0)
ssim (graph 0) -> Stream #0:0 (wrapped_avframe)
psnr (graph 0) -> Stream #0:1 (wrapped_avframe)
Stream #0:1 -> #0:2 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame= 4068 fps=1678 q=-0.0 Lq=-0.0 size=N/A time=00:02:15.91 bitrate=N/A
speed=56.1x
video:3877kB audio:11707kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[Parsed_psnr_3 @ 0x7fc111d02320] PSNR y:24.093409 u:36.335188 v:35.686523
average:25.682373 min:6.083289 max:inf
[Parsed_ssim_2 @ 0x7fc111d01ee0] SSIM Y:0.919171 (10.924350) U:0.984416
(18.073267) V:0.983770 (17.896915) All:0.940812 (12.277668)
}}}'
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Ticket URL: <https://trac.ffmpeg.org/ticket/5321#comment:4>
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