February 2021 - ffmpeg-user - lists.ffmpeg.org

astats to csv file
by Benjamin Houtman 13 Feb '21

13 Feb '21

I'm trying to find a simple way to push a file's astats metadata to a csv file with headers. It feels like it should be easy to do, but I've not been successful so far. Thanks

5 9

Is there something about inputting raw frames
by Mark Filipak (ffmpeg) 12 Feb '21

12 Feb '21

Is there something about inputting raw frames that I don't know? I'm using 'vspipe' to pipe raw frames to 'ffmpeg -i pipe:'. The vapoursynth script, 'Mark's.vpy', is known good. The output of vapoursynth is known good. I've tried to be careful to retain valid PTSs, but apparently have failed. The output should be around 1200 frames, but 364 frames are dropped. I've frame stepped through the target, 'Mark's_script_6.mkv', and the frames that are there are in the correct order. The only thing I can guess is that ffmpeg handles 48/1.001fps raw video frames in such a way that PTS is not valid or can't be changed with 'setpts=fps=60000/1001'. Can anyone see an error. Or, lacking an error, does anyone know of a workaround? Thanks. Mark's_script_6.cmd ===== ECHO from vapoursynth import core>Mark's.vpy ECHO video = core.ffms2.Source(source='Mark\'s_source.mkv')>>Mark's.vpy ECHO import havsfunc as havsfunc>>Mark's.vpy ECHO video = havsfunc.InterFrame(video, Preset="medium", Tuning="smooth", InputType="2D", NewNum=48000, NewDen=1001, GPU=True)>>Mark's.vpy ECHO video.set_output()>>Mark's.vpy vspipe --y4m Mark's.vpy - | ffmpeg -thread_queue_size 2048 -i pipe: -filter_complex "setpts=N*1001/60000/TB, split[1][2], [1]shuffleframes=0 1 2 3 3, select=not(eq(mod(n\,5)\,4))[3], [2]tblend=all_expr='if(eq(mod(X,2),mod(Y,2)),TOP,BOTTOM)', shuffleframes=0 1 2 2 3, select=eq(mod(n\,5)\,4)[4], [3][4]interleave" -i Mark's_source.mkv -map 0:v -map 1:a -codec:v libx265 -x265-params "crf=16:qcomp=0.60" -codec:a copy -codec:s copy Mark's_script_6.mkv -y PAUSE @GOTO :EOF +----------------------------------------------------------+ 1/12 second [A.a_________________________][B.b_________________________] 24/1.001 FPS [A.a__________][AB.ab________][B.b__________][BC.bc________] raw: havsfunc.InterFrame(... NewNum=48000, NewDen=1001 ...) [A.a_______][AB.ab_____][B.b_______][BC.bc_____][C.c_______] setpts=N*1001/60000/TB ------------------------------------------------------------ [A.a_______][AB.ab_____][B.b_______][BC.bc_____][BC.bc_____] shuffleframes=0 1 2 3 3 [A.a_______][AB.ab_____][B.b_______][BC.bc_____] select=not(eq(mod(n\,5)\,4)) ------------------------------------------------------------ [A~AB.a~ab_][AB~B.ab~b_][B~BC.b~bc_][BC~C.bc~c_][C~CD.c~cd_] tblend=all_expr='if(eq(mod(X,2),mod(Y,2)),TOP,BOTTOM)' [A~AB.a~ab_][AB~B.ab~b_][B~BC.b~bc_][B~BC.b~bc_][BC~C.bc~c_] shuffleframes=0 1 2 2 3 [BC~C.bc~c_] select=eq(mod(n\,5)\,4) ------------------------------------------------------------ [A.a_______][AB.ab_____][B.b_______][BC.bc_____][BC~C.bc~c_] interleave ===== ffmpeg-20210212-001609.log ===== ffmpeg started on 2021-02-12 at 00:16:09 Report written to "ffmpeg-20210212-001609.log" Log level: 32 Command line: ffmpeg -thread_queue_size 2048 -i pipe: -filter_complex "setpts=N*1001/60000/TB, split[1][2], [1]shuffleframes=0 1 2 3 3, select=not(eq(mod(n\\,5)\\,4))[3], [2]tblend=all_expr='if(eq(mod(X,2),mod(Y,2)),TOP,BOTTOM)', shuffleframes=0 1 2 2 3, select=eq(mod(n\\,5)\\,4)[4], [3][4]interleave" -i "Mark's_source.mkv" -map 0:v -map 1:a -codec:v libx265 -x265-params "crf=16:qcomp=0.60" -codec:a copy -codec:s copy "Mark's_script_6.mkv" -y ffmpeg version N-100851-g9f38fac053 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 9.3-win32 (GCC) 20200320 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-zlib --enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-opencl --enable-libvmaf --enable-vulkan --enable-libvorbis --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec --enable-cuda-llvm --enable-libglslang --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libvidstab --enable-libx264 --enable-libx26 libavutil 56. 64.100 / 56. 64.100 libavcodec 58.119.100 / 58.119.100 libavformat 58. 65.101 / 58. 65.101 libavdevice 58. 11.103 / 58. 11.103 libavfilter 7.100.100 / 7.100.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 Input #0, yuv4mpegpipe, from 'pipe:': Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p(progressive), 1920x1080, 47.95 fps, 47.95 tbr, 47.95 tbn, 47.95 tbc [matroska,webm @ 0000018879c886c0] Could not find codec parameters for stream 3 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options Input #1, matroska,webm, from 'Mark's_source.mkv': Metadata: encoder : libebml v1.4.0 + libmatroska v1.6.2 creation_time : 2021-01-23T03:12:17.000000Z Duration: 00:00:20.11, start: 0.000000, bitrate: 26228 kb/s Stream #1:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default) Metadata: BPS-eng : 24046529 DURATION-eng : 00:00:20.020000000 NUMBER_OF_FRAMES-eng: 480 NUMBER_OF_BYTES-eng: 60176441 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #1:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, stereo, s32p (24 bit) (default) Metadata: BPS-eng : 2085565 DURATION-eng : 00:00:20.096000000 NUMBER_OF_FRAMES-eng: 1884 NUMBER_OF_BYTES-eng: 5238940 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #1:2(eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Metadata: BPS-eng : 192000 DURATION-eng : 00:00:20.096000000 NUMBER_OF_FRAMES-eng: 628 NUMBER_OF_BYTES-eng: 482304 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #1:3(eng): Subtitle: hdmv_pgs_subtitle Metadata: BPS-eng : 0 DURATION-eng : 00:00:00.000000000 NUMBER_OF_FRAMES-eng: 0 NUMBER_OF_BYTES-eng: 0 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream mapping: Stream #0:0 (rawvideo) -> setpts interleave -> Stream #0:0 (libx265) Stream #1:1 -> #0:1 (copy) Stream #1:2 -> #0:2 (copy) Output #0, matroska, to 'Mark's_script_6.mkv': Metadata: encoder : Lavf58.65.101 Stream #0:0: Video: hevc, yuv420p(progressive), 1920x1080, q=2-31, 1k tbn Metadata: encoder : Lavc58.119.100 libx265 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Stream #0:1(eng): Audio: dts (DTS-HD MA) ([1] [0][0] / 0x2001), 48000 Hz, stereo, s32p (24 bit) (default) Metadata: BPS-eng : 2085565 DURATION-eng : 00:00:20.096000000 NUMBER_OF_FRAMES-eng: 1884 NUMBER_OF_BYTES-eng: 5238940 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s Metadata: BPS-eng : 192000 DURATION-eng : 00:00:20.096000000 NUMBER_OF_FRAMES-eng: 628 NUMBER_OF_BYTES-eng: 482304 _STATISTICS_WRITING_APP-eng: mkvmerge v51.0.0 ('I Wish') 64-bit _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-23 03:12:17 _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES frame= 1 fps=0.0 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A speed= 0x frame= 1 fps=0.8 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A speed= 0x frame= 6 fps=3.1 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=3 speed= 0x frame= 7 fps=2.8 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=3 speed= 0x frame= 10 fps=3.3 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=5 speed= 0x frame= 13 fps=3.6 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=6 speed= 0x frame= 16 fps=3.9 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=8 speed= 0x frame= 19 fps=4.0 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=10 speed= 0x frame= 22 fps=4.2 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=11 speed= 0x frame= 24 fps=4.1 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=11 speed= 0x frame= 27 fps=4.2 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=13 speed= 0x frame= 27 fps=3.2 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=13 speed= 0x frame= 29 fps=3.2 q=0.0 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=15 speed= 0x frame= 30 fps=2.6 q=22.2 size= 4kB time=00:00:00.00 bitrate=N/A dup=0 drop=15 speed= 0x frame= 32 fps=2.6 q=23.6 size= 4kB time=00:00:00.08 bitrate= 389.1kbits/s dup=0 drop=17 speed=0.0068x frame= 32 fps=2.4 q=23.6 size= 4kB time=00:00:00.08 bitrate= 389.1kbits/s dup=0 drop=17 speed=0.00624x frame= 33 fps=2.2 q=25.8 size= 4kB time=00:00:00.08 bitrate= 389.1kbits/s dup=0 drop=17 speed=0.0055x frame= 35 fps=2.2 q=22.6 size= 4kB time=00:00:00.10 bitrate= 307.6kbits/s dup=0 drop=19 speed=0.00673x frame= 36 fps=2.2 q=24.5 size= 4kB time=00:00:00.13 bitrate= 235.7kbits/s dup=0 drop=19 speed=0.00826x frame= 37 fps=1.9 q=25.9 size= 4kB time=00:00:00.20 bitrate= 160.7kbits/s dup=0 drop=21 speed=0.0101x frame= 38 fps=1.8 q=25.9 size= 4kB time=00:00:00.20 bitrate= 160.7kbits/s dup=0 drop=21 speed=0.00948x frame= 39 fps=1.8 q=22.2 size= 4kB time=00:00:00.20 bitrate= 160.7kbits/s dup=0 drop=21 speed=0.00923x frame= 42 fps=1.8 q=22.4 size= 4kB time=00:00:00.33 bitrate= 95.3kbits/s dup=0 drop=22 speed=0.0143x frame= 43 fps=1.7 q=24.4 size= 4kB time=00:00:00.33 bitrate= 95.3kbits/s dup=0 drop=22 speed=0.0134x frame= 45 fps=1.7 q=25.9 size= 4kB time=00:00:00.33 bitrate= 95.3kbits/s dup=0 drop=23 speed=0.0131x frame= 47 fps=1.8 q=24.7 size= 4kB time=00:00:00.42 bitrate= 76.0kbits/s dup=0 drop=23 speed=0.0161x frame= 50 fps=1.8 q=25.8 size= 4kB time=00:00:00.54 bitrate= 59.6kbits/s dup=0 drop=25 speed=0.02x frame= 53 fps=1.9 q=25.7 size= 4kB time=00:00:00.54 bitrate= 59.6kbits/s dup=0 drop=27 speed=0.0196x frame= 56 fps=2.0 q=24.5 size= 4kB time=00:00:00.68 bitrate= 47.4kbits/s dup=0 drop=29 speed=0.0241x frame= 59 fps=2.1 q=22.4 size= 4kB time=00:00:00.68 bitrate= 46.9kbits/s dup=0 drop=31 speed=0.0239x frame= 61 fps=2.1 q=22.6 size= 4kB time=00:00:00.79 bitrate= 40.5kbits/s dup=0 drop=33 speed=0.0272x frame= 64 fps=2.1 q=26.1 size= 4kB time=00:00:00.93 bitrate= 34.5kbits/s dup=0 drop=35 speed=0.0314x frame= 67 fps=2.2 q=25.9 size= 4kB time=00:00:00.93 bitrate= 34.5kbits/s dup=0 drop=37 speed=0.0308x frame= 70 fps=2.3 q=22.3 size= 4kB time=00:00:01.07 bitrate= 30.0kbits/s dup=0 drop=39 speed=0.0347x frame= 72 fps=2.3 q=26.1 size= 4kB time=00:00:01.07 bitrate= 30.0kbits/s dup=0 drop=41 speed=0.0341x frame= 75 fps=2.3 q=22.8 size= 4kB time=00:00:01.16 bitrate= 27.8kbits/s dup=0 drop=43 speed=0.0362x frame= 77 fps=2.4 q=26.1 size= 4kB time=00:00:01.16 bitrate= 27.8kbits/s dup=0 drop=43 speed=0.0356x frame= 81 fps=2.4 q=22.8 size= 4kB time=00:00:01.28 bitrate= 25.1kbits/s dup=0 drop=44 speed=0.0388x frame= 83 fps=2.5 q=26.2 size= 4kB time=00:00:01.41 bitrate= 22.8kbits/s dup=0 drop=46 speed=0.0419x frame= 87 fps=2.5 q=22.7 size= 4kB time=00:00:01.53 bitrate= 21.1kbits/s dup=0 drop=47 speed=0.0447x frame= 89 fps=2.6 q=26.2 size= 4kB time=00:00:01.53 bitrate= 21.1kbits/s dup=0 drop=49 speed=0.044x frame= 92 fps=2.6 q=26.1 size= 4kB time=00:00:01.57 bitrate= 20.5kbits/s dup=0 drop=51 speed=0.0445x frame= 95 fps=2.6 q=26.2 size= 4kB time=00:00:01.67 bitrate= 19.3kbits/s dup=0 drop=53 speed=0.0463x frame= 98 fps=2.7 q=26.1 size= 4kB time=00:00:01.79 bitrate= 18.0kbits/s dup=0 drop=55 speed=0.0488x frame= 101 fps=2.7 q=26.2 size= 4kB time=00:00:01.83 bitrate= 17.6kbits/s dup=0 drop=57 speed=0.0491x frame= 103 fps=2.7 q=22.0 size= 4kB time=00:00:01.89 bitrate= 17.0kbits/s dup=0 drop=57 speed=0.0502x frame= 106 fps=2.8 q=26.2 size= 4kB time=00:00:02.03 bitrate= 15.9kbits/s dup=0 drop=59 speed=0.053x frame= 111 fps=2.8 q=26.2 size= 4kB time=00:00:02.04 bitrate= 15.8kbits/s dup=0 drop=63 speed=0.0524x frame= 113 fps=2.8 q=25.2 size= 4kB time=00:00:02.16 bitrate= 14.9kbits/s dup=0 drop=65 speed=0.0546x frame= 117 fps=2.9 q=26.3 size= 4kB time=00:00:02.28 bitrate= 14.2kbits/s dup=0 drop=67 speed=0.0564x frame= 120 fps=2.9 q=24.5 size= 4kB time=00:00:02.28 bitrate= 14.2kbits/s dup=0 drop=69 speed=0.0557x frame= 123 fps=3.0 q=22.2 size= 4kB time=00:00:02.41 bitrate= 13.4kbits/s dup=0 drop=71 speed=0.0584x frame= 126 fps=3.0 q=24.5 size= 4kB time=00:00:02.53 bitrate= 12.7kbits/s dup=0 drop=73 speed=0.0603x frame= 128 fps=3.0 q=26.3 size= 4kB time=00:00:02.53 bitrate= 12.7kbits/s dup=0 drop=75 speed=0.0595x frame= 131 fps=3.0 q=22.5 size= 4kB time=00:00:02.66 bitrate= 12.1kbits/s dup=0 drop=77 speed=0.0618x frame= 134 fps=3.1 q=26.3 size= 4kB time=00:00:02.67 bitrate= 12.1kbits/s dup=0 drop=79 speed=0.0612x frame= 136 fps=3.1 q=26.3 size= 4kB time=00:00:02.79 bitrate= 11.6kbits/s dup=0 drop=79 speed=0.0632x frame= 139 fps=3.1 q=26.3 size= 4kB time=00:00:02.82 bitrate= 11.4kbits/s dup=0 drop=81 speed=0.0631x frame= 142 fps=3.1 q=26.3 size= 4kB time=00:00:02.92 bitrate= 11.1kbits/s dup=0 drop=83 speed=0.0644x frame= 145 fps=3.2 q=26.3 size= 4kB time=00:00:03.04 bitrate= 10.6kbits/s dup=0 drop=85 speed=0.0663x frame= 148 fps=3.2 q=26.2 size= 4kB time=00:00:03.04 bitrate= 10.6kbits/s dup=0 drop=87 speed=0.0656x frame= 151 fps=3.2 q=26.3 size= 4kB time=00:00:03.16 bitrate= 10.2kbits/s dup=0 drop=89 speed=0.0673x frame= 155 fps=3.3 q=22.7 size= 4kB time=00:00:03.30 bitrate= 9.8kbits/s dup=0 drop=90 speed=0.0694x frame= 157 fps=3.3 q=26.3 size= 4kB time=00:00:03.30 bitrate= 9.8kbits/s dup=0 drop=92 speed=0.0687x frame= 160 fps=3.3 q=26.2 size= 4kB time=00:00:03.42 bitrate= 9.4kbits/s dup=0 drop=94 speed=0.0702x frame= 163 fps=3.3 q=26.3 size= 4kB time=00:00:03.52 bitrate= 9.2kbits/s dup=0 drop=96 speed=0.0714x frame= 167 fps=3.3 q=22.5 size= 4kB time=00:00:03.66 bitrate= 8.8kbits/s dup=0 drop=97 speed=0.0733x frame= 169 fps=3.3 q=26.3 size= 4kB time=00:00:03.66 bitrate= 8.8kbits/s dup=0 drop=99 speed=0.0725x frame= 172 fps=3.4 q=26.3 size= 4kB time=00:00:03.78 bitrate= 8.5kbits/s dup=0 drop=101 speed=0.074x frame= 175 fps=3.4 q=26.3 size= 4kB time=00:00:03.79 bitrate= 8.5kbits/s dup=0 drop=103 speed=0.0732x frame= 178 fps=3.4 q=25.2 size= 4kB time=00:00:03.92 bitrate= 8.2kbits/s dup=0 drop=105 speed=0.075x frame= 180 fps=3.4 q=26.3 size= 4kB time=00:00:03.97 bitrate= 8.1kbits/s dup=0 drop=105 speed=0.0751x frame= 184 fps=3.4 q=26.4 size= 4kB time=00:00:04.04 bitrate= 8.0kbits/s dup=0 drop=106 speed=0.0754x frame= 189 fps=3.5 q=26.3 size= 4kB time=00:00:04.17 bitrate= 7.7kbits/s dup=0 drop=110 speed=0.0767x frame= 190 fps=3.5 q=22.2 size= 4kB time=00:00:04.29 bitrate= 7.5kbits/s dup=0 drop=110 speed=0.0782x frame= 193 fps=3.5 q=26.2 size= 4kB time=00:00:04.29 bitrate= 7.5kbits/s dup=0 drop=112 speed=0.0775x frame= 197 fps=3.5 q=26.4 size= 4kB time=00:00:04.42 bitrate= 7.3kbits/s dup=0 drop=113 speed=0.0791x frame= 199 fps=3.5 q=22.8 size= 4kB time=00:00:04.42 bitrate= 7.3kbits/s dup=0 drop=115 speed=0.0783x frame= 201 fps=3.5 q=26.5 size= 4kB time=00:00:04.55 bitrate= 7.1kbits/s dup=0 drop=117 speed=0.0798x frame= 204 fps=3.5 q=26.3 size= 4kB time=00:00:04.55 bitrate= 7.1kbits/s dup=0 drop=119 speed=0.0788x frame= 207 fps=3.5 q=26.5 size= 4kB time=00:00:04.67 bitrate= 6.9kbits/s dup=0 drop=121 speed=0.08x frame= 211 fps=3.6 q=26.5 size= 5120kB time=00:00:04.80 bitrate=8721.8kbits/s dup=0 drop=123 speed=0.0813x frame= 214 fps=3.6 q=26.5 size= 5120kB time=00:00:04.80 bitrate=8721.8kbits/s dup=0 drop=125 speed=0.0806x frame= 216 fps=3.6 q=22.3 size= 5120kB time=00:00:04.92 bitrate=8514.6kbits/s dup=0 drop=127 speed=0.0818x frame= 219 fps=3.6 q=24.5 size= 5120kB time=00:00:04.96 bitrate=8440.9kbits/s dup=0 drop=129 speed=0.0817x frame= 221 fps=3.6 q=26.6 size= 5120kB time=00:00:05.03 bitrate=8333.6kbits/s dup=0 drop=129 speed=0.082x frame= 224 fps=3.6 q=26.4 size= 5120kB time=00:00:05.17 bitrate=8111.2kbits/s dup=0 drop=131 speed=0.0835x frame= 227 fps=3.6 q=26.6 size= 5120kB time=00:00:05.17 bitrate=8111.2kbits/s dup=0 drop=133 speed=0.0828x frame= 229 fps=3.6 q=22.4 size= 5120kB time=00:00:05.28 bitrate=7930.2kbits/s dup=0 drop=135 speed=0.084x frame= 232 fps=3.7 q=24.5 size= 5120kB time=00:00:05.28 bitrate=7930.2kbits/s dup=0 drop=137 speed=0.0833x frame= 234 fps=3.7 q=26.6 size= 5120kB time=00:00:05.42 bitrate=7728.6kbits/s dup=0 drop=139 speed=0.0847x frame= 238 fps=3.7 q=24.7 size= 5120kB time=00:00:05.48 bitrate=7652.4kbits/s dup=0 drop=141 speed=0.0848x frame= 240 fps=3.7 q=26.6 size= 5120kB time=00:00:05.54 bitrate=7564.1kbits/s dup=0 drop=143 speed=0.085x frame= 243 fps=3.7 q=22.5 size= 5120kB time=00:00:05.67 bitrate=7394.8kbits/s dup=0 drop=145 speed=0.0862x frame= 245 fps=3.7 q=26.7 size= 5120kB time=00:00:05.67 bitrate=7394.8kbits/s dup=0 drop=145 speed=0.0855x frame= 248 fps=3.7 q=26.6 size= 5120kB time=00:00:05.80 bitrate=7230.3kbits/s dup=0 drop=147 speed=0.0867x frame= 251 fps=3.7 q=26.7 size= 5120kB time=00:00:05.80 bitrate=7230.3kbits/s dup=0 drop=149 speed=0.0858x frame= 254 fps=3.7 q=26.7 size= 5120kB time=00:00:05.92 bitrate=7075.4kbits/s dup=0 drop=151 speed=0.087x frame= 257 fps=3.7 q=26.7 size= 5120kB time=00:00:06.02 bitrate=6961.5kbits/s dup=0 drop=153 speed=0.0878x frame= 260 fps=3.8 q=26.7 size= 5120kB time=00:00:06.07 bitrate=6900.8kbits/s dup=0 drop=155 speed=0.0879x frame= 262 fps=3.8 q=24.9 size= 5120kB time=00:00:06.28 bitrate=6677.8kbits/s dup=0 drop=157 speed=0.0901x frame= 265 fps=3.8 q=21.9 size= 5120kB time=00:00:06.28 bitrate=6677.8kbits/s dup=0 drop=159 speed=0.0894x frame= 268 fps=3.8 q=24.7 size= 5120kB time=00:00:06.28 bitrate=6677.8kbits/s dup=0 drop=161 speed=0.0883x frame= 271 fps=3.8 q=21.9 size= 5120kB time=00:00:06.41 bitrate=6534.2kbits/s dup=0 drop=163 speed=0.0895x frame= 274 fps=3.8 q=24.8 size= 5120kB time=00:00:06.54 bitrate=6406.5kbits/s dup=0 drop=165 speed=0.0906x frame= 276 fps=3.8 q=26.6 size= 5120kB time=00:00:06.54 bitrate=6406.5kbits/s dup=0 drop=167 speed=0.0898x frame= 280 fps=3.8 q=26.8 size= 7424kB time=00:00:06.66 bitrate=9124.9kbits/s dup=0 drop=169 speed=0.0907x frame= 283 fps=3.8 q=26.7 size= 7424kB time=00:00:06.80 bitrate=8939.8kbits/s dup=0 drop=171 speed=0.0919x frame= 286 fps=3.8 q=24.7 size= 7424kB time=00:00:06.80 bitrate=8939.8kbits/s dup=0 drop=173 speed=0.0911x frame= 289 fps=3.8 q=21.8 size= 7424kB time=00:00:06.92 bitrate=8787.4kbits/s dup=0 drop=175 speed=0.092x frame= 292 fps=3.9 q=24.7 size= 7424kB time=00:00:07.04 bitrate=8629.0kbits/s dup=0 drop=177 speed=0.093x frame= 295 fps=3.9 q=21.7 size= 7424kB time=00:00:07.04 bitrate=8627.8kbits/s dup=0 drop=179 speed=0.0923x frame= 298 fps=3.9 q=25.5 size= 7424kB time=00:00:07.16 bitrate=8486.9kbits/s dup=0 drop=181 speed=0.0932x frame= 302 fps=3.9 q=22.1 size= 7424kB time=00:00:07.30 bitrate=8325.4kbits/s dup=0 drop=182 speed=0.0943x frame= 305 fps=3.9 q=26.6 size= 7424kB time=00:00:07.30 bitrate=8325.4kbits/s dup=0 drop=184 speed=0.0937x frame= 308 fps=3.9 q=26.7 size= 7424kB time=00:00:07.42 bitrate=8194.2kbits/s dup=0 drop=186 speed=0.0945x frame= 310 fps=3.9 q=24.7 size= 7424kB time=00:00:07.44 bitrate=8167.8kbits/s dup=0 drop=188 speed=0.0942x frame= 312 fps=3.9 q=26.6 size= 7424kB time=00:00:07.55 bitrate=8055.3kbits/s dup=0 drop=188 speed=0.0949x frame= 316 fps=3.9 q=24.8 size= 7424kB time=00:00:07.68 bitrate=7909.7kbits/s dup=0 drop=192 speed=0.0959x frame= 319 fps=4.0 q=21.2 size= 7424kB time=00:00:07.69 bitrate=7902.5kbits/s dup=0 drop=194 speed=0.0953x frame= 323 fps=4.0 q=26.6 size= 7424kB time=00:00:07.80 bitrate=7791.1kbits/s dup=0 drop=196 speed=0.0961x frame= 324 fps=4.0 q=26.6 size= 7424kB time=00:00:07.84 bitrate=7748.4kbits/s dup=0 drop=196 speed=0.0959x frame= 328 fps=4.0 q=26.6 size= 7424kB time=00:00:08.04 bitrate=7564.4kbits/s dup=0 drop=197 speed=0.0976x frame= 332 fps=4.0 q=26.7 size= 7424kB time=00:00:08.04 bitrate=7563.4kbits/s dup=0 drop=198 speed=0.0968x frame= 335 fps=4.0 q=24.9 size= 7424kB time=00:00:08.16 bitrate=7445.8kbits/s dup=0 drop=200 speed=0.0977x frame= 338 fps=4.0 q=21.8 size= 7424kB time=00:00:08.29 bitrate=7330.0kbits/s dup=0 drop=202 speed=0.0987x frame= 341 fps=4.0 q=24.6 size= 7424kB time=00:00:08.29 bitrate=7330.0kbits/s dup=0 drop=204 speed=0.098x frame= 344 fps=4.0 q=21.6 size= 7424kB time=00:00:08.42 bitrate=7219.5kbits/s dup=0 drop=206 speed=0.0989x frame= 347 fps=4.0 q=24.6 size= 7424kB time=00:00:08.44 bitrate=7199.9kbits/s dup=0 drop=208 speed=0.0985x frame= 349 fps=4.0 q=26.6 size= 7424kB time=00:00:08.54 bitrate=7119.8kbits/s dup=0 drop=210 speed=0.099x frame= 353 fps=4.1 q=26.6 size= 7424kB time=00:00:08.68 bitrate=7005.8kbits/s dup=0 drop=212 speed= 0.1x frame= 357 fps=4.1 q=26.6 size= 7424kB time=00:00:08.69 bitrate=6992.9kbits/s dup=0 drop=213 speed=0.0995x frame= 360 fps=4.1 q=21.9 size= 7424kB time=00:00:08.79 bitrate=6912.6kbits/s dup=0 drop=214 speed= 0.1x frame= 363 fps=4.1 q=26.7 size= 7424kB time=00:00:08.90 bitrate=6829.6kbits/s dup=0 drop=216 speed=0.101x frame= 366 fps=4.1 q=21.5 size= 7424kB time=00:00:09.04 bitrate=6725.4kbits/s dup=0 drop=218 speed=0.102x frame= 369 fps=4.1 q=26.6 size= 7424kB time=00:00:09.04 bitrate=6725.4kbits/s dup=0 drop=220 speed=0.101x frame= 372 fps=4.1 q=25.5 size= 7424kB time=00:00:09.17 bitrate=6631.5kbits/s dup=0 drop=222 speed=0.102x frame= 376 fps=4.1 q=21.3 size= 7424kB time=00:00:09.28 bitrate=6547.3kbits/s dup=0 drop=224 speed=0.102x frame= 378 fps=4.1 q=21.1 size= 7424kB time=00:00:09.28 bitrate=6547.3kbits/s dup=0 drop=226 speed=0.102x frame= 381 fps=4.2 q=26.6 size= 7424kB time=00:00:09.42 bitrate=6451.4kbits/s dup=0 drop=228 speed=0.103x frame= 385 fps=4.2 q=26.6 size= 7424kB time=00:00:09.54 bitrate=6372.3kbits/s dup=0 drop=229 speed=0.103x frame= 389 fps=4.2 q=24.2 size= 7424kB time=00:00:09.54 bitrate=6372.3kbits/s dup=0 drop=230 speed=0.103x frame= 392 fps=4.2 q=21.6 size= 7424kB time=00:00:09.67 bitrate=6287.3kbits/s dup=0 drop=232 speed=0.104x frame= 395 fps=4.2 q=26.6 size= 7424kB time=00:00:09.80 bitrate=6205.9kbits/s dup=0 drop=234 speed=0.104x frame= 398 fps=4.2 q=25.4 size= 7424kB time=00:00:09.80 bitrate=6205.9kbits/s dup=0 drop=236 speed=0.104x frame= 401 fps=4.2 q=26.6 size= 7424kB time=00:00:09.92 bitrate=6125.2kbits/s dup=0 drop=238 speed=0.104x frame= 404 fps=4.2 q=21.5 size= 7424kB time=00:00:09.92 bitrate=6125.2kbits/s dup=0 drop=240 speed=0.104x frame= 406 fps=4.2 q=26.6 size= 7424kB time=00:00:10.04 bitrate=6053.9kbits/s dup=0 drop=242 speed=0.104x frame= 410 fps=4.2 q=26.6 size= 7424kB time=00:00:10.17 bitrate=5977.7kbits/s dup=0 drop=244 speed=0.105x frame= 413 fps=4.2 q=21.1 size= 7424kB time=00:00:10.18 bitrate=5971.3kbits/s dup=0 drop=246 speed=0.105x frame= 416 fps=4.3 q=26.6 size= 7424kB time=00:00:10.31 bitrate=5897.2kbits/s dup=0 drop=248 speed=0.105x frame= 419 fps=4.3 q=24.6 size= 7424kB time=00:00:10.31 bitrate=5897.2kbits/s dup=0 drop=250 speed=0.105x frame= 422 fps=4.3 q=21.4 size= 7424kB time=00:00:10.43 bitrate=5831.0kbits/s dup=0 drop=252 speed=0.105x frame= 425 fps=4.3 q=25.3 size= 7424kB time=00:00:10.54 bitrate=5766.3kbits/s dup=0 drop=254 speed=0.106x frame= 428 fps=4.3 q=26.4 size= 7424kB time=00:00:10.54 bitrate=5766.3kbits/s dup=0 drop=256 speed=0.105x frame= 431 fps=4.3 q=26.4 size= 7424kB time=00:00:10.66 bitrate=5702.5kbits/s dup=0 drop=258 speed=0.106x frame= 434 fps=4.3 q=21.5 size= 7424kB time=00:00:10.80 bitrate=5629.7kbits/s dup=0 drop=260 speed=0.107x frame= 437 fps=4.3 q=24.5 size= 7424kB time=00:00:10.80 bitrate=5629.7kbits/s dup=0 drop=262 speed=0.106x frame= 439 fps=4.3 q=26.4 size= 7424kB time=00:00:10.85 bitrate=5601.7kbits/s dup=0 drop=264 speed=0.106x frame= 442 fps=4.3 q=21.5 size= 7424kB time=00:00:10.92 bitrate=5564.8kbits/s dup=0 drop=266 speed=0.106x frame= 444 fps=4.3 q=26.4 size= 7424kB time=00:00:11.04 bitrate=5504.8kbits/s dup=0 drop=266 speed=0.107x frame= 448 fps=4.3 q=25.3 size= 7424kB time=00:00:11.17 bitrate=5441.8kbits/s dup=0 drop=270 speed=0.107x frame= 451 fps=4.3 q=26.3 size= 7424kB time=00:00:11.17 bitrate=5440.3kbits/s dup=0 drop=272 speed=0.107x frame= 455 fps=4.3 q=24.5 size= 12544kB time=00:00:11.30 bitrate=9089.8kbits/s dup=0 drop=274 speed=0.108x frame= 457 fps=4.3 q=26.3 size= 12544kB time=00:00:11.34 bitrate=9057.0kbits/s dup=0 drop=276 speed=0.107x frame= 461 fps=4.3 q=24.5 size= 12544kB time=00:00:11.46 bitrate=8963.0kbits/s dup=0 drop=278 speed=0.108x frame= 463 fps=4.3 q=26.3 size= 12544kB time=00:00:11.51 bitrate=8925.6kbits/s dup=0 drop=280 speed=0.108x frame= 467 fps=4.3 q=24.5 size= 12544kB time=00:00:11.62 bitrate=8839.6kbits/s dup=0 drop=282 speed=0.108x frame= 470 fps=4.4 q=21.2 size= 12544kB time=00:00:11.75 bitrate=8743.3kbits/s dup=0 drop=284 speed=0.109x frame= 472 fps=4.4 q=25.2 size= 12544kB time=00:00:11.76 bitrate=8735.9kbits/s dup=0 drop=286 speed=0.108x frame= 474 fps=4.3 q=26.3 size= 12544kB time=00:00:11.88 bitrate=8649.9kbits/s dup=0 drop=286 speed=0.109x frame= 478 fps=4.4 q=21.5 size= 12544kB time=00:00:11.97 bitrate=8579.8kbits/s dup=0 drop=290 speed=0.109x frame= 480 fps=4.4 q=26.4 size= 12544kB time=00:00:11.97 bitrate=8579.8kbits/s dup=0 drop=290 speed=0.109x frame= 484 fps=4.4 q=21.0 size= 12544kB time=00:00:12.17 bitrate=8437.5kbits/s dup=0 drop=294 speed=0.11x frame= 486 fps=4.4 q=26.4 size= 12544kB time=00:00:12.17 bitrate=8437.5kbits/s dup=0 drop=294 speed=0.109x frame= 490 fps=4.4 q=21.3 size= 12544kB time=00:00:12.29 bitrate=8356.5kbits/s dup=0 drop=298 speed=0.11x frame= 492 fps=4.4 q=26.3 size= 12544kB time=00:00:12.30 bitrate=8351.1kbits/s dup=0 drop=298 speed=0.109x frame= 496 fps=4.4 q=21.2 size= 12544kB time=00:00:12.43 bitrate=8263.8kbits/s dup=0 drop=302 speed=0.11x frame= 498 fps=4.4 q=26.4 size= 12544kB time=00:00:12.55 bitrate=8186.1kbits/s dup=0 drop=302 speed=0.11x frame= 501 fps=4.4 q=21.3 size= 12544kB time=00:00:12.55 bitrate=8184.8kbits/s dup=0 drop=304 speed=0.11x frame= 503 fps=4.4 q=26.1 size= 12544kB time=00:00:12.67 bitrate=8110.5kbits/s dup=0 drop=306 speed=0.11x frame= 506 fps=4.4 q=21.0 size= 12544kB time=00:00:12.80 bitrate=8022.5kbits/s dup=0 drop=308 speed=0.111x frame= 509 fps=4.4 q=24.6 size= 12544kB time=00:00:12.80 bitrate=8022.5kbits/s dup=0 drop=310 speed=0.111x frame= 512 fps=4.4 q=20.7 size= 12544kB time=00:00:12.92 bitrate=7949.9kbits/s dup=0 drop=312 speed=0.111x frame= 515 fps=4.4 q=25.4 size= 12544kB time=00:00:13.03 bitrate=7884.6kbits/s dup=0 drop=314 speed=0.111x frame= 518 fps=4.4 q=26.6 size= 12544kB time=00:00:13.17 bitrate=7802.0kbits/s dup=0 drop=316 speed=0.112x frame= 519 fps=4.4 q=21.3 size= 12544kB time=00:00:13.17 bitrate=7802.0kbits/s dup=0 drop=316 speed=0.111x frame= 522 fps=4.4 q=26.5 size= 12544kB time=00:00:13.17 bitrate=7802.0kbits/s dup=0 drop=318 speed=0.111x frame= 526 fps=4.4 q=18.3 size= 12544kB time=00:00:13.28 bitrate=7732.7kbits/s dup=0 drop=322 speed=0.111x frame= 529 fps=4.4 q=26.6 size= 14848kB time=00:00:13.42 bitrate=9059.0kbits/s dup=0 drop=324 speed=0.112x frame= 532 fps=4.4 q=25.5 size= 14848kB time=00:00:13.43 bitrate=9051.6kbits/s dup=0 drop=326 speed=0.111x frame= 534 fps=4.4 q=26.6 size= 14848kB time=00:00:13.55 bitrate=8973.4kbits/s dup=0 drop=326 speed=0.112x frame= 538 fps=4.4 q=20.8 size= 14848kB time=00:00:13.60 bitrate=8937.8kbits/s dup=0 drop=330 speed=0.112x frame= 540 fps=4.4 q=26.7 size= 14848kB time=00:00:13.67 bitrate=8896.0kbits/s dup=0 drop=330 speed=0.112x frame= 544 fps=4.4 q=25.6 size= 14848kB time=00:00:13.81 bitrate=8807.1kbits/s dup=0 drop=334 speed=0.112x frame= 546 fps=4.4 q=26.8 size= 14848kB time=00:00:13.83 bitrate=8793.1kbits/s dup=0 drop=334 speed=0.112x frame= 549 fps=4.4 q=27.1 size= 14848kB time=00:00:13.92 bitrate=8732.5kbits/s dup=0 drop=336 speed=0.112x frame= 552 fps=4.4 q=26.8 size= 14848kB time=00:00:14.04 bitrate=8659.7kbits/s dup=0 drop=338 speed=0.113x frame= 556 fps=4.4 q=25.7 size= 14848kB time=00:00:14.09 bitrate=8627.8kbits/s dup=0 drop=342 speed=0.112x frame= 559 fps=4.4 q=26.8 size= 14848kB time=00:00:14.18 bitrate=8574.9kbits/s dup=0 drop=344 speed=0.113x frame= 563 fps=4.4 q=25.7 size= 14848kB time=00:00:14.31 bitrate=8498.2kbits/s dup=0 drop=346 speed=0.113x frame= 566 fps=4.5 q=27.3 size= 14848kB time=00:00:14.43 bitrate=8429.3kbits/s dup=0 drop=348 speed=0.114x frame= 568 fps=4.4 q=25.7 size= 14848kB time=00:00:14.44 bitrate=8422.9kbits/s dup=0 drop=350 speed=0.113x frame= 570 fps=4.4 q=26.9 size= 14848kB time=00:00:14.54 bitrate=8361.5kbits/s dup=0 drop=350 speed=0.113x frame= 574 fps=4.5 q=21.1 size= 14848kB time=00:00:14.66 bitrate=8294.2kbits/s dup=0 drop=354 speed=0.114x frame= 576 fps=4.5 q=26.9 size= 14848kB time=00:00:14.66 bitrate=8294.2kbits/s dup=0 drop=354 speed=0.113x frame= 580 fps=4.5 q=25.7 size= 14848kB time=00:00:14.80 bitrate=8216.9kbits/s dup=0 drop=358 speed=0.114x frame= 582 fps=4.5 q=26.9 size= 14848kB time=00:00:14.82 bitrate=8204.7kbits/s dup=0 drop=358 speed=0.114x frame= 586 fps=4.5 q=25.8 size= 14848kB time=00:00:14.93 bitrate=8145.4kbits/s dup=0 drop=362 speed=0.114x frame= 588 fps=4.5 q=26.9 size= 14848kB time=00:00:15.04 bitrate=8083.1kbits/s dup=0 drop=362 speed=0.114x frame= 591 fps=4.4 q=27.7 Lsize= 19559kB time=00:00:20.09 bitrate=7974.0kbits/s dup=0 drop=364 speed=0.15x video:13947kB audio:5587kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.131188% ===== -- I don't have a dog. And furthermore, my dog doesn't bite. And furthermore, you provoked him.

3 12

exposure filter
by Michael Koch 11 Feb '21

11 Feb '21

Hello, in the new "exposure" filter it's unclear in which order the operations are applied. First exposure, then black level? Or first black level, then exposure? Does the filter have a limiter if the result is out of range? These infos should be added to the documentation. Michael

2 12

Issue with starting ffmpeg
by Mohammed Abdirahman 11 Feb '21

11 Feb '21

I'm trying to use ffmpeg to stram webrtc. I'm using blackmagic decklink sdi. When I run ffmpeg using the following command, ffmpeg doesn't start. This is my command: ffmpeg -loglevel debug -debug pict -fflags nobuffer -f x11grab -thread_queue_size 1024 -framerate 50 -probesize 42M -i :12 -f alsa -thread_queue_size 1024 -i hw:12,0 -ac 2 -ar 48000 -vf scale=1920:1080,interlace=scan=tff:lowpass=complex -pix_fmt uyvy422 -format_code Hi50 -f decklink -top 1 -flags:v +ildct+ilme -r 25000/1000 'DeckLink Quad (2)' I'm getting those errors: cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream) Last message repeated 1408 times [rawvideo @ 0x55af0497d140] PACKET SIZE: 8294400, STRIDE: 7680 detected 32 logical cores [Parsed_scale_0 @ 0x55af0498f840] Setting 'w' to value '1920' [Parsed_scale_0 @ 0x55af0498f840] Setting 'h' to value '1080' [Parsed_scale_0 @ 0x55af0498f840] Setting 'flags' to value 'bicubic' [Parsed_scale_0 @ 0x55af0498f840] w:1920 h:1080 flags:'bicubic' interl:0 [Parsed_interlace_1 @ 0x55af049d1940] Setting 'scan' to value 'tff' [Parsed_interlace_1 @ 0x55af049d1940] Setting 'lowpass' to value 'complex' [graph 0 input from stream 0:0 @ 0x55af049d2540] Setting 'video_size' to value '1920x1080' [graph 0 input from stream 0:0 @ 0x55af049d2540] Setting 'pix_fmt' to value '123' [graph 0 input from stream 0:0 @ 0x55af049d2540] Setting 'time_base' to value '1/1000000' [graph 0 input from stream 0:0 @ 0x55af049d2540] Setting 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @ 0x55af049d2540] Setting 'frame_rate' to value '50/1' [graph 0 input from stream 0:0 @ 0x55af049d2540] w:1920 h:1080 pixfmt:bgr0 tb:1/1000000 fr:50/1 sar:0/1 [format @ 0x55af049d3540] Setting 'pix_fmts' to value 'uyvy422' [auto_scaler_0 @ 0x55af049d57c0] Setting 'flags' to value 'bicubic' [auto_scaler_0 @ 0x55af049d57c0] w:iw h:ih flags:'bicubic' interl:0 [format @ 0x55af049d3540] auto-inserting filter 'auto_scaler_0' between the filter 'Parsed_interlace_1' and the filter 'format' [AVFilterGraph @ 0x55af049a11c0] query_formats: 5 queried, 3 merged, 1 already done, 0 delayed [Parsed_scale_0 @ 0x55af0498f840] picking yuv444p out of 25 ref:bgr0 alpha:0 [Parsed_scale_0 @ 0x55af0498f840] w:1920 h:1080 fmt:bgr0 sar:0/1 -> w:1920 h:1080 fmt:yuv444p sar:0/1 flags:0x4 [Parsed_interlace_1 @ 0x55af049d1940] mode:4 filter:complex h:1080 -> h:1080 [auto_scaler_0 @ 0x55af049d57c0] w:1920 h:1080 fmt:yuv444p sar:0/1 -> w:1920 h:1080 fmt:uyvy422 sar:0/1 flags:0x4 cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream) [x11grab @ 0x55af04972740] Thread message queue blocking; consider raising the thread_queue_size option (current value: 1024) [alsa @ 0x55af0497d580] Thread message queue blocking; consider raising the thread_queue_size option (current value: 1024) Finishing stream 0:0 without any data written to it. Finishing stream 0:1 without any data written to it. [graph_1_in_1_0 @ 0x55af049a8f00] Setting 'time_base' to value '1/48000' [graph_1_in_1_0 @ 0x55af049a8f00] Setting 'sample_rate' to value '48000' [graph_1_in_1_0 @ 0x55af049a8f00] Setting 'sample_fmt' to value 's16' [graph_1_in_1_0 @ 0x55af049a8f00] Setting 'channel_layout' to value '0x3' [graph_1_in_1_0 @ 0x55af049a8f00] tb:1/48000 samplefmt:s16 samplerate:48000 chlayout:0x3 [format_out_0_1 @ 0x55af049a96c0] Setting 'sample_fmts' to value 's16' [format_out_0_1 @ 0x55af049a96c0] Setting 'sample_rates' to value '48000' [format_out_0_1 @ 0x55af049a96c0] Setting 'channel_layouts' to value '0x3' [AVFilterGraph @ 0x55af049a1100] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed [decklink @ 0x55af04999f00] Trying to find mode for frame size 1920x1080, frame timing 1/25, field order 2, direction 1, format code (unset) [decklink @ 0x55af04999f00] Found Decklink mode 1920 x 1080 with rate 25.00(i) [decklink @ 0x55af04999f00] output: DeckLink Quad (2), preroll: 12, frames buffer size: 24 Output #0, decklink, to 'DeckLink Quad (2)': Metadata: encoder : Lavf58.65.101 Stream #0:0, 0, 1/25: Video: wrapped_avframe, 1 reference frame, uyvy422(top first), 1920x1080 (0x0), 0/1, q=2-31, 200 kb/s, 25 fps, 25 tbn Metadata: encoder : Lavc58.119.100 wrapped_avframe Stream #0:1, 0, 1/48000: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Metadata: encoder : Lavc58.119.100 pcm_s16le frame= 0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed= 0x video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Input file #0 (:12): Input stream #0:0 (video): 1 packets read (8294400 bytes); 1 frames decoded; Total: 1 packets (8294400 bytes) demuxed Input file #1 (hw:12,0): Input stream #1:0 (audio): 0 packets read (0 bytes); 0 frames decoded (0 samples); Total: 0 packets (0 bytes) demuxed Output file #0 (DeckLink Quad (2)): Output stream #0:0 (video): 0 frames encoded; 0 packets muxed (0 bytes); Output stream #0:1 (audio): 0 frames encoded (0 samples); 0 packets muxed (0 bytes); Total: 0 packets (0 bytes) muxed Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) 1 frames successfully decoded, 0 decoding errors I hope thas someone could help me? Met vriendelijke groet, Kind Regards, Mohammed Abdirahamn Com1 B.V. +31 24 7113340 (office) Kerkenbos 1020i | 6546 BA | Nijmegen | The Netherlands mohammed.abdirahman(a)com1.nl<mailto:mohammed.abdirahman@com1.nl> support(a)com1.nl<mailto:support@com1.nl> VAT NL850770427B01 KVK 53152808 [cid:image007.png@01D70095.74F6D6E0] [cid:image008.png@01D70095.74F6D6E0] Please consider the environment before printing this email[blaadje-icon - Urfruit]<http://thinkbeforeprinting.org/> The information transmitted is intended only for use by the addressee and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of it, or the taking of any action in reliance upon this information by persons and/or entities other than the intended recipient is prohibited. If you received this in error, please inform the sender and/or addressee immediately and delete the material. Thank you.

1 0

compiling ffmpeg for nvidia gpu under Debian Bullseye
by Steve Newcomb 11 Feb '21

11 Feb '21

I'm hoping to encode h265 streams using my new nvidia glx1650-super. As a Debian devotee, the first thing I learned was that the drivers aren't available in the Debian 10 ("stable") repository, so I did a fresh install of Debian Bullseye ("testing"). That done, I attempted to compile ffmpeg, following the ffmpeg compilation instructions provided at https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvid… <https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvid…>. I succeeded eventually, after encountering problems. Here are the instructions provided at the aforementioned link, but with added commentary about what happened and how I eventually succeeded. (I did everything as superuser, so you won't see any "sudo" below.) git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git No problem here. cd nv-codec-headers && sudo make install && cd – This worked, but the final invocation of cd was uninterpretable due to the last character's being garbled (by my browser? or by Emacs?). I followed this incantation with a "cd ..", which turned out to be the right thing to do. git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg/ No problem here. apt-get install build-essential yasm cmake libtool libc6 libc6-dev unzip wget libnuma1 libnuma-dev This turned out not to be enough packages. I ended up installing the following packages, as well, even if some of them may not be strictly necessary. I always install lots of utility packages which don't appear on this list, so this list, too, may not be complete: nvidia-detect nvidia-driver libnvidia-encode1 libnppc11 libnppial11 libnppicc11 libnppidei11 libnppif11 libnppig11 libnppim11 libnppist11 libnppisu11 libnppitc11 libnpps11 nvidia-cg-toolkit nvidia-cuda-gdb nvidia-cuda-toolkit nvidia-cuda-toolkit-gcc nvtop ./configure --enable-nonfree -–enable-cuda-sdk –enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 This incantation had 2 problems. (1) --enable-cuda-sdk is an obsolete argument. I changed it to --enable-cuda-nvcc (2) The configure failed with the report: "ERROR: failed checking for nvcc." Why? The configure script checks nvcc by passing itan obsolete architecture code, "compute_30", which modern nvcc does not support. <https://stackoverflow.com/questions/64774548/unsupported-gpu-architecture-c…> I edited the part of the configure script that says: if enabled cuda_nvcc; then nvcc_default="nvcc" nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2" else nvcc_default="clang" nvccflags_default="--cuda-gpu-arch=sm_30 -O2" NVCC_C="" fi ...so it instead said: if enabled cuda_nvcc; then nvcc_default="nvcc" nvccflags_default="-gencode arch=compute_75,code=sm_75 -O2" else nvcc_default="clang" nvccflags_default="--cuda-gpu-arch=sm_75 -O2" NVCC_C="" fi ...although apparently it would have been fine to change "30" to "50" instead of "75" as I did. Perhaps ffmpeg developers should make this change, or do something similar. That done, the configure incantation that actually worked was: ./configure --enable-nonfree --enable-cuda-nvcc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 make -j 8 No problem here. make install No problem here.

2 2

Non-monotonous DTS in output stream
by Pieter Venter 10 Feb '21

10 Feb '21

Hello, I'm trying to process some AVI files that originally came from a Sony Handycam to mp4 and managed to get that to work. However, a couple of files are giving me trouble and I've spent days trying to figure it out. I'm new here but have done my homework as best I could: * I downloaded the latest ffmpeg build I could find. * Searched the forums for solutions/switches (-af aresample=async=1, -fflags +igndts, -fflags +sortdts). * Tried other tools to extract the audio. * Past full command and output for your reference. * Will try to not "top post". That seems to be a thing here. If I run the following command, audio is processed correctly up to about the 43s mark, then becomes slower than expected (i.e. voices are deep, audio in "slow mo" but video plays normal). The original file plays correctly with VLC and Video on Linux. It does not play correctly with mplayer (same slowed down audio issue past 43 seconds). fmpeg -i input.avi -c:v libx264 -preset fast -crf 21 output.mp4 ffmpeg version N-55863-g9f38fac053-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg libavutil 56. 64.100 / 56. 64.100 libavcodec 58.119.100 / 58.119.100 libavformat 58. 65.101 / 58. 65.101 libavdevice 58. 11.103 / 58. 11.103 libavfilter 7.100.100 / 7.100.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 [avi @ 0x620c340] Switching to NI mode, due to poor interleaving Input #0, avi, from 'input.avi': Duration: 00:07:00.00, start: 0.000000, bitrate: 28806 kb/s Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0:1: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s Stream mapping: Stream #0:0 -> #0:0 (dvvideo (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native)) Press [q] to stop, [?] for help [libx264 @ 0x6233580] using SAR=16/15 [libx264 @ 0x6233580] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 [libx264 @ 0x6233580] profile High, level 3.0, 4:2:0, 8-bit [libx264 @ 0x6233580] 264 - core 161 r3040 35417dc - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=-2 threads=12 lookahead_threads=2 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=crf mbtree=1 crf=21.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'output.mp4': Metadata: encoder : Lavf58.65.101 Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(bottom coded first (swapped)), 720x576 [SAR 16:15 DAR 4:3], q=2-31, 25 fps, 12800 tbn Metadata: encoder : Lavc58.119.100 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz, stereo, fltp, 128 kb/s Metadata: encoder : Lavc58.119.100 aac frame=10500 fps=116 q=-1.0 Lsize= 168876kB time=00:07:00.02 bitrate=3293.7kbits/s speed=4.63x video:158898kB audio:9545kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.257381% [libx264 @ 0x6233580] frame I:93 Avg QP:20.65 size: 54098 [libx264 @ 0x6233580] frame P:3607 Avg QP:23.10 size: 22302 [libx264 @ 0x6233580] frame B:6800 Avg QP:24.65 size: 11358 [libx264 @ 0x6233580] consecutive B-frames: 13.4% 0.6% 0.7% 85.3% [libx264 @ 0x6233580] mb I I16..4: 1.2% 98.2% 0.6% [libx264 @ 0x6233580] mb P I16..4: 0.5% 32.9% 0.4% P16..4: 35.4% 17.7% 9.8% 0.0% 0.0% skip: 3.2% [libx264 @ 0x6233580] mb B I16..4: 2.2% 25.7% 0.2% B16..8: 22.8% 8.7% 0.7% direct:28.9% skip:10.8% L0:40.2% L1:32.6% BI:27.2% [libx264 @ 0x6233580] 8x8 transform intra:93.9% inter:82.3% [libx264 @ 0x6233580] coded y,uvDC,uvAC intra: 82.4% 88.7% 30.9% inter: 40.1% 65.9% 1.2% [libx264 @ 0x6233580] i16 v,h,dc,p: 21% 19% 34% 26% [libx264 @ 0x6233580] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 14% 40% 5% 5% 5% 5% 6% 6% [libx264 @ 0x6233580] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 54% 15% 4% 4% 3% 4% 3% 4% [libx264 @ 0x6233580] i8c dc,h,v,p: 59% 19% 19% 3% [libx264 @ 0x6233580] Weighted P-Frames: Y:8.2% UV:1.4% [libx264 @ 0x6233580] ref P L0: 56.9% 43.1% [libx264 @ 0x6233580] ref B L0: 74.0% 26.0% [libx264 @ 0x6233580] ref B L1: 95.3% 4.7% [libx264 @ 0x6233580] kb/s:3099.25 [aac @ 0x6234fc0] Qavg: 189.772 Trying to narrow down the problem area, I did the following - just encode up to the 43s mark and dump the audio. If I run it for the whole file, there are hundreds, if not thousands of entries like " Non-monotonous DTS..." ffmpeg -t 00:00:43 -i input.avi -map 0:a:0 -c:a aac output.avi ffmpeg version N-55863-g9f38fac053-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg libavutil 56. 64.100 / 56. 64.100 libavcodec 58.119.100 / 58.119.100 libavformat 58. 65.101 / 58. 65.101 libavdevice 58. 11.103 / 58. 11.103 libavfilter 7.100.100 / 7.100.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 [avi @ 0x5b922c0] Switching to NI mode, due to poor interleaving Input #0, avi, from 'input.avi': Duration: 00:07:00.00, start: 0.000000, bitrate: 28806 kb/s Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0:1: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s File 'output.avi' already exists. Overwrite? [y/N] y Stream mapping: Stream #0:1 -> #0:0 (pcm_s16le (native) -> aac (native)) Press [q] to stop, [?] for help Output #0, avi, to 'output.avi': Metadata: ISFT : Lavf58.65.101 Stream #0:0: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 32000 Hz, stereo, fltp, 128 kb/s Metadata: encoder : Lavc58.119.100 aac [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1341, current: 1339; changing to 1342. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1342, current: 1340; changing to 1343. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1343, current: 1340; changing to 1344. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1344, current: 1341; changing to 1345. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1345, current: 1342; changing to 1346. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1346, current: 1342; changing to 1347. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1347, current: 1343; changing to 1348. This may result in incorrect timestamps in the output file. [avi @ 0x5bb8040] Non-monotonous DTS in output stream 0:0; previous: 1348, current: 1343; changing to 1349. This may result in incorrect timestamps in the output file. size= 714kB time=00:00:43.16 bitrate= 135.6kbits/s speed=96.2x video:0kB audio:676kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.592729% [aac @ 0x5bb9980] Qavg: 225.541 The only solution I could find so far is to a. extract all the audio using ffmpeg (total audio file lengh is 10m09s) b. use audacity to carefully select the audio from 0m43s to the end and "shrink" it down to a total of 7m00s (the original file length) c. create a new video file from the processed audio stream Is there a way to troubleshoot, ignore, correct the Non-monotonous DTS error? Thanks for your help.

1 1

facing a error/issue in compression efficiency under h.265
by USMAN AAMER 10 Feb '21

10 Feb '21

Hi, I am comparing the compression efficiency of H.264 and H.265 codecs. I have studied many research papers showing that the compression efficiency of H.265 is much better than H.264. But I am not able to get the same results. I am trying to compress 664 YUV 4:2:0 video sequence with ffmpeg under H.264 and H.265 codecs and got the resultant videos of following sizes: H.264: 5.58 MB H.265: 6.66 MB I am using the following commands for compression: H.264: ffmpeg -i video.y4m -c:v libx264 -an -strict experimental -preset slow -CRF 30 - b:v 800k -f mp4 output.mp4 and for H.265: ffmpeg -i video.y4m -c:v libx265 -an -strict experimental -preset slow -CRF 30 - b:v 800k -f mp4 output1.mp4 Kindly tell me what is the issue. Waiting for the kind response. Thank you.

2 1

h264 encoding of bgr images into .mp4 file with libav
by laddoe 10 Feb '21

10 Feb '21

I'm trying to encode(h264) a series of .png into a mp4 file. A cv::Mat holds the png data (BGR) and that is converted to YUV420P which is then encoded and written to a .mp4 file. I have added a block statement in the code to store image on the disk (before encoding) and that image is correct so the frame holds the correct data before it gets passed. The avcodec_send_frame returns 0 so up to that point everything works. But I get an mp4 file of 1 MB and I can't open it with vlc. Below is a short summary of my code ecodec.h class ECodec { public: MovieCodec(); ~MovieCodec(); void MatToFrame( cv::Mat& image ); void encode( AVFrame *frame, AVPacket *pkt ); private: FILE* m_file; AVCodec* m_encoder = NULL; AVCodecContext* m_codecContextOut = NULL; AVPacket* m_packet = NULL; }; ecodec.cpp ECodec::ECodec() : // m_encoder( avcodec_find_encoder_by_name( videoCodec.c_str())) m_encoder( avcodec_find_encoder( AV_CODEC_ID_H264 )) { m_file = fopen( "c:\\tmp\\outputVideo.mp4", "wb"); } void ECodec::MatToFrame( cv::Mat& image ) { int ret( 0 ); int frameRate( 24 ); AVFrame *frame = NULL; m_encoder( avcodec_find_encoder( AV_CODEC_ID_H264 )) m_codecContextOut = avcodec_alloc_context3( m_encoder ); m_codecContextOut->width = 800; m_codecContextOut->height = 640; m_codecContextOut->bit_rate = 400000;//m_codecContextOut->width * m_codecContextOut->height * 3; m_codecContextOut->time_base = (AVRational){1, 24}; m_codecContextOut->framerate = (AVRational){24, 1}; m_codecContextOut->codec_tag = AV_CODEC_ID_H264; m_codecContextOut->pix_fmt = AV_PIX_FMT_YUV420P; m_codecContextOut->codec_type = AVMEDIA_TYPE_VIDEO; m_codecContextOut->gop_size = 1; m_codecContextOut->max_b_frames = 1; av_log_set_level(AV_LOG_VERBOSE); ret = av_opt_set(m_codecContextOut->priv_data, "preset", "slow", 0); ret = avcodec_open2(m_codecContextOut, m_encoder, NULL); frame = av_frame_alloc(); frame->format = AV_PIX_FMT_YUV420P; frame->width = image.cols(); frame->height = image.rows(); ret = av_image_alloc(frame->data, frame->linesize, frame->width, frame->height, AV_PIX_FMT_YUV420P, 1); if (ret < 0) { return; } struct SwsContext *sws_ctx; sws_ctx = sws_getContext((int)image.cols(), (int)image.rows(), AV_PIX_FMT_RGB24, (int)image.cols(), (int)image.rows(), AV_PIX_FMT_YUV420P, 0, NULL, NULL, NULL); const uint8_t* rgbData[1] = { (uint8_t* )image.getData() }; int rgbLineSize[1] = { 3 * image.cols() }; sws_scale(sws_ctx, rgbData, rgbLineSize, 0, image.rows(), frame->data, frame->linesize); frame->pict_type = AV_PICTURE_TYPE_I; cv::Mat yuv420p(frame->height + frame->height/2, frame->width, CV_8UC1,frame->data[0]); cv::Mat cvmIm; cv::cvtColor(yuv420p,cvmIm,CV_YUV420p2BGR); cv::imwrite("c:\\tmp\\rawimage.png", cvmIm); //OK m_packet = av_packet_alloc(); ret = av_new_packet( m_packet, m_codecContextOut->width * m_codecContextOut->height * 3 ); /* encode the image */ encode( frame, m_packet ); avcodec_free_context(&m_codecContextOut); av_frame_free(&frame); av_packet_free( &m_packet ); } void ECodec::encode( AVFrame *frame, AVPacket *pkt ) { int ret; /* send the frame to the encoder */ ret = avcodec_send_frame( m_codecContextOut, frame); if (ret < 0) { fprintf(stderr, "Error sending a frame for encoding\n"); exit(1); } do { ret = avcodec_receive_packet(m_codecContextOut, pkt); if (ret == 0) { fwrite(pkt->data, 1, pkt->size, m_file ); av_packet_unref(pkt); break; } else if ((ret < 0) && (ret != AVERROR(EAGAIN))) { return; } else if (ret == AVERROR(EAGAIN)) { ret = avcodec_send_frame(m_codecContextOut, NULL); if (0 > ret) { return; } } } while (ret == 0); }

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alternating checkerboard
by Mark Filipak (ffmpeg) 10 Feb '21

10 Feb '21

I don't know the details of the filters that work on pixels ('blend', for example). I hope a knowledgeable person will respond with suggestions. I'd like to experiment with a filter that mixes pixels from 2 progressive streams on an alternating checkerboard pattern. Got any suggestions? _________________ _________________ _________________ |# # # # # # # # # | % % % % % % % % |#%#%#%#%#%#%#%#%# | # # # # # # # # |% % % % % % % % % |%#%#%#%#%#%#%#%#% |# # # # # # # # # + | % % % % % % % % = |#%#%#%#%#%#%#%#%# | # # # # # # # # |% % % % % % % % % |%#%#%#%#%#%#%#%#% |# # # # # # # # # | % % % % % % % % |#%#%#%#%#%#%#%#%# -- I don't have a dog. And furthermore, my dog doesn't bite. And furthermore, you provoked him.

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transcode via VapourSynth plugins
by Mark Filipak (ffmpeg) 10 Feb '21

10 Feb '21

I seek to transcode via VapourSynth's svpflow1_vs64.dll & svpflow2_vs64.dll plugins. The best information I've found is that VS integration is possible via the following 3 methods. Method 1: ffmpeg -f vapoursynth -i SCRIPT.vpy ... Method 2: python SCRIPT.vpy | ffmpeg -f yuv4mpegpipe - ... Method 3: vspipe --y4m SCRIPT.vpy - | ffmpeg -i pipe: ... Method 1: Since available ffmpeg builds don't include vapoursynth support, I will forego this method in lieu of piping. Method 2: Do you, dear reader, have experience with this method that you'd care to share? Method 3: Do you, dear reader, have experience with this method that you'd care to share? Warm Regards, Mark.

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