On 7/16/19, Elliott Balsley <[email protected]> wrote: > Hello. I’m trying to encode a v210 AVI to lossless JPEG2000. I believe > libopenjpeg defaults to the lossless profile. When I use -psnr while > encoding, it shows inf, that’s good. But when I run -filter_complex psnr on > the encoded file it shows different values. > > From the documentation, I know the output of the psnr filter averages the > MSE of all frames. I don’t know how the -psnr flag works, is that also an > average, or is just showing the PSNR of one frame? > > Full command-line output below, first from the encode, then from the > comparison. > > D:\temp>ffmpeg -i 1920x1080p23.97_YUV422_Legal_60s.avi -c:v libopenjpeg > -psnr -an openjpeg.mxf > ffmpeg version N-94303-g7cb4f8c962 Copyright (c) 2000-2019 the FFmpeg > developers > built with gcc 9.1.1 (GCC) 20190716 > 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. 30.100 / 56. 30.100 > libavcodec 58. 53.101 / 58. 53.101 > libavformat 58. 28.102 / 58. 28.102 > libavdevice 58. 7.100 / 58. 7.100 > libavfilter 7. 56.101 / 7. 56.101 > libswscale 5. 4.101 / 5. 4.101 > libswresample 3. 4.100 / 3. 4.100 > libpostproc 55. 4.100 / 55. 4.100 > [avi @ 0000018978058c80] non-interleaved AVI > [avi @ 0000018978058c80] Stream #0: not enough frames to estimate rate; > consider increasing probesize > Guessed Channel Layout for Input Stream #0.1 : stereo > Input #0, avi, from '1920x1080p23.97_YUV422_Legal_60s.avi': > Duration: 00:01:00.06, start: 0.000000, bitrate: 1063058 kb/s > Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le, 1920x1080, > 1061360 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc > Stream #0:1: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, > s32 (24 bit), 2304 kb/s > Stream mapping: > Stream #0:0 -> #0:0 (v210 (native) -> jpeg2000 (libopenjpeg)) > Press [q] to stop, [?] for help > [mxf @ 000001897805a1c0] 417083/10000000 input time base matched 1001/24000 > container time base > Output #0, mxf, to 'openjpeg.mxf': > Metadata: > encoder : Lavf58.28.102 > Stream #0:0: Video: jpeg2000 (libopenjpeg), yuv422p10le, 1920x1080, > q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc > Metadata: > encoder : Lavc58.53.101 libopenjpeg > frame= 1440 fps=6.8 q=-0.0 LPSNR=Y:inf U:inf V:inf *:inf size= 2861957kB > time=00:01:00.06 bitrate=390362.1kbits/s speed=0.285x > video:2860792kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB > muxing overhead: 0.040706% > > > > > D:\temp>ffmpeg -i 1920x1080p23.97_YUV422_Legal_60s.avi -i openjpeg.mxf -an > -filter_complex "psnr" -f null - > ffmpeg version N-94303-g7cb4f8c962 Copyright (c) 2000-2019 the FFmpeg > developers > built with gcc 9.1.1 (GCC) 20190716 > 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. 30.100 / 56. 30.100 > libavcodec 58. 53.101 / 58. 53.101 > libavformat 58. 28.102 / 58. 28.102 > libavdevice 58. 7.100 / 58. 7.100 > libavfilter 7. 56.101 / 7. 56.101 > libswscale 5. 4.101 / 5. 4.101 > libswresample 3. 4.100 / 3. 4.100 > libpostproc 55. 4.100 / 55. 4.100 > [avi @ 0000022c13af98c0] non-interleaved AVI > [avi @ 0000022c13af98c0] Stream #0: not enough frames to estimate rate; > consider increasing probesize > Guessed Channel Layout for Input Stream #0.1 : stereo > Input #0, avi, from '1920x1080p23.97_YUV422_Legal_60s.avi': > Duration: 00:01:00.06, start: 0.000000, bitrate: 1063058 kb/s > Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le, 1920x1080, > 1061360 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc > Stream #0:1: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, > s32 (24 bit), 2304 kb/s > Input #1, mxf, from 'openjpeg.mxf': > Metadata: > operational_pattern_ul: 060e2b34.04010101.0d010201.01010900 > uid : adab4424-2f25-4dc7-92ff-29bd000c0000 > generation_uid : adab4424-2f25-4dc7-92ff-29bd000c0001 > company_name : FFmpeg > product_name : OP1a Muxer > product_version : 58.28.102 > product_uid : adab4424-2f25-4dc7-92ff-29bd000c0002 > material_package_umid: > 0x060A2B340101010501010D001309998F529471341F09998F00529471341F0900 > timecode : 00:00:00:00 > Duration: 00:01:00.06, start: 0.000000, bitrate: 390362 kb/s > Stream #1:0: Video: jpeg2000, yuv422p10le(progressive), 1920x1080, > lossless, 23.98 tbr, 23.98 tbn, 23.98 tbc > Metadata: > file_package_umid: > 0x060A2B340101010501010D001309998F529471341F09998F00529471341F0901 > Stream mapping: > Stream #0:0 (v210) -> psnr:main > Stream #1:0 (jpeg2000) -> psnr:reference > psnr -> Stream #0:0 (wrapped_avframe) > Press [q] to stop, [?] for help > Output #0, null, to 'pipe:': > Metadata: > encoder : Lavf58.28.102 > Stream #0:0: Video: wrapped_avframe, yuv422p10le, 1920x1080, q=2-31, 200 > kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default) > Metadata: > encoder : Lavc58.53.101 wrapped_avframe > [null @ 0000022c17ceec40] Application provided invalid, non monotonically > increasing dts to muxer in stream 0: 1439 >= 1439 > frame= 1441 fps= 19 q=-0.0 Lsize=N/A time=00:01:00.05 bitrate=N/A > speed=0.776x > video:754kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB > muxing overhead: unknown > [Parsed_psnr_0 @ 0000022c29ab7680] PSNR y:30.477769 u:37.424566 v:37.127359 > average:32.663307 min:26.866594 max:inf
One command gives 1440 frames the other one gives 1441. That is the difference I think. _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
