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• Speeding up/slowing down video ffmpeg

  4 avril 2021, par BahaaIddin Al Sharqawi

  I want to change video speed using ffmpeg framework. I used this command for that :

  



  ffmpeg -y -i /storage/extSdCard/Video/1.avi -filter_complex [0:v]fps=50.0, setpts=0.5*PTS[v];[0:a]atempo=2.0[a] -map [v] -map [a] -preset ultrafast /storage/emulated/0/VID-20170716-VidRotate1.mp4

  



  How can I guess the duration of the resulting video after slowing down or speeding up video ?

  



  This is my whole log in console :

  



  ffmpeg -y -i /storage/extSdCard/Video/1.avi -filter_complex [0:v]fps=50.0, setpts=0.5*PTS[v];[0:a]atempo=2.0[a] -map [v] -map [a] -preset ultrafast /storage/emulated/0/VID-20170716-VidRotate1.mp4 
    07-16 15:07:15.112: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    07-16 15:07:15.112:   built with gcc 4.8 (GCC)
    07-16 15:07:15.112:   configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    07-16 15:07:15.122:   libavutil      55. 17.103 / 55. 17.103
    07-16 15:07:15.122:   libavcodec     57. 24.102 / 57. 24.102
    07-16 15:07:15.122:   libavformat    57. 25.100 / 57. 25.100
    07-16 15:07:15.132:   libavdevice    57.  0.101 / 57.  0.101
    07-16 15:07:15.132:   libavfilter     6. 31.100 /  6. 31.100
    07-16 15:07:15.132:   libswscale      4.  0.100 /  4.  0.100
    07-16 15:07:15.132:   libswresample   2.  0.101 /  2.  0.101
    07-16 15:07:15.142:   libpostproc    54.  0.100 / 54.  0.100
    07-16 15:07:15.232: Input #0, avi, from '/storage/extSdCard/Video/1.avi':
    07-16 15:07:15.232:   Metadata:
    07-16 15:07:15.232:     encoder         : Lavf52.104.0
    07-16 15:07:15.232:   Duration: 00:02:03.96, start: 0.000000, bitrate: 773 kb/s
    07-16 15:07:15.242:     Stream #0:0: Video: mpeg4 (Simple Profile) (xvid / 0x64697678), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 632 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
    07-16 15:07:15.242:     Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 kb/s
    07-16 15:07:15.262 750-781/? W/ActivityManager: mDVFSHelper.release()
    07-16 15:07:15.282: [libx264 @ 0xb5428800] using SAR=1/1
    07-16 15:07:15.312: [libx264 @ 0xb5428800] using cpu capabilities: none!
    07-16 15:07:15.422: [libx264 @ 0xb5428800] profile Constrained Baseline, level 3.1
    07-16 15:07:15.422: [libx264 @ 0xb5428800] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    07-16 15:07:15.462: Output #0, mp4, to '/storage/emulated/0/VID-20170716-VidRotate1.mp4':
    07-16 15:07:15.462:   Metadata:
    07-16 15:07:15.462:     encoder         : Lavf57.25.100
    07-16 15:07:15.462:     Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 50 fps, 12800 tbn, 50 tbc (default)
    07-16 15:07:15.462:     Metadata:
    07-16 15:07:15.462:       encoder         : Lavc57.24.102 libx264
    07-16 15:07:15.462:     Side data:
    07-16 15:07:15.462:       unknown side data type 10 (24 bytes)
    07-16 15:07:15.472:     Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
    07-16 15:07:15.472:     Metadata:
    07-16 15:07:15.472:       encoder         : Lavc57.24.102 aac
    07-16 15:07:15.472: Stream mapping:
    07-16 15:07:15.472:   Stream #0:0 (mpeg4) -> fps
    07-16 15:07:15.472:   Stream #0:1 (mp3) -> atempo
    07-16 15:07:15.472:   setpts -> Stream #0:0 (libx264)
    07-16 15:07:15.472:   atempo -> Stream #0:1 (aac)
    07-16 15:07:15.472: Press [q] to stop, [?] for help
    07-16 15:07:15.532: Past duration 0.999992 too large
    07-16 15:07:15.972: frame=   24 fps=0.0 q=15.0 size=      62kB time=00:00:00.39 bitrate=1296.2kbits/s dup=0 drop=19 speed=0.781x    
    07-16 15:07:16.483: frame=   45 fps= 44 q=15.0 size=      63kB time=00:00:00.83 bitrate= 617.2kbits/s dup=0 drop=40 speed=0.827x    
    07-16 15:07:16.983: frame=   72 fps= 48 q=20.0 size=     104kB time=00:00:01.36 bitrate= 621.9kbits/s dup=0 drop=67 speed=0.906x    
    07-16 15:07:17.484: frame=   99 fps= 49 q=17.0 size=     171kB time=00:00:01.90 bitrate= 734.8kbits/s dup=0 drop=94 speed=0.942x    
    07-16 15:07:18.004: frame=  125 fps= 49 q=22.0 size=     208kB time=00:00:02.41 bitrate= 704.8kbits/s dup=0 drop=120 speed=0.953x    
    07-16 15:07:18.515: frame=  152 fps= 50 q=18.0 size=     334kB time=00:00:02.97 bitrate= 919.6kbits/s dup=0 drop=147 speed=0.979x    
    07-16 15:07:19.015: frame=  181 fps= 51 q=18.0 size=     407kB time=00:00:03.55 bitrate= 938.9kbits/s dup=0 drop=176 speed=   1x    
    07-16 15:07:19.516: frame=  209 fps= 52 q=16.0 size=     465kB time=00:00:04.13 bitrate= 921.3kbits/s dup=0 drop=204 speed=1.02x    
    07-16 15:07:20.026: frame=  234 fps= 51 q=15.0 size=     483kB time=00:00:04.59 bitrate= 860.0kbits/s dup=0 drop=229 speed=1.01x    
    07-16 15:07:20.527: frame=  258 fps= 51 q=20.0 size=     606kB time=00:00:05.08 bitrate= 975.7kbits/s dup=0 drop=253 speed=1.01x    
    07-16 15:07:21.047: frame=  291 fps= 52 q=15.0 size=     606kB time=00:00:05.73 bitrate= 866.0kbits/s dup=0 drop=286 speed=1.03x    
    07-16 15:07:21.558: frame=  317 fps= 52 q=23.0 size=     716kB time=00:00:06.24 bitrate= 938.8kbits/s dup=0 drop=312 speed=1.03x    
    07-16 15:07:22.048: frame=  342 fps= 52 q=17.0 size=     781kB time=00:00:06.75 bitrate= 947.1kbits/s dup=0 drop=337 speed=1.03x    
    07-16 15:07:22.549: frame=  367 fps= 52 q=20.0 size=     823kB time=00:00:07.26 bitrate= 927.7kbits/s dup=0 drop=362 speed=1.03x    
    07-16 15:07:23.049: frame=  393 fps= 52 q=19.0 size=     903kB time=00:00:07.77 bitrate= 951.0kbits/s dup=0 drop=388 speed=1.03x    
    07-16 15:07:23.560: frame=  421 fps= 52 q=17.0 size=     992kB time=00:00:08.33 bitrate= 974.6kbits/s dup=0 drop=416 speed=1.03x    
    07-16 15:07:24.060: frame=  448 fps= 52 q=15.0 size=    1016kB time=00:00:08.87 bitrate= 938.7kbits/s dup=0 drop=443 speed=1.03x    
    07-16 15:07:24.551: frame=  474 fps= 52 q=15.0 size=    1029kB time=00:00:09.40 bitrate= 896.0kbits/s dup=0 drop=469 speed=1.04x    
    07-16 15:07:25.061: frame=  500 fps= 52 q=15.0 size=    1029kB time=00:00:09.91 bitrate= 850.1kbits/s dup=0 drop=495 speed=1.03x    
    07-16 15:07:25.562: frame=  528 fps= 52 q=15.0 size=    1110kB time=00:00:10.49 bitrate= 866.8kbits/s dup=0 drop=523 speed=1.04x    
    07-16 15:07:26.052: frame=  560 fps= 53 q=15.0 size=    1114kB time=00:00:11.12 bitrate= 820.6kbits/s dup=0 drop=555 speed=1.05x    
    07-16 15:07:26.563: frame=  591 fps= 53 q=15.0 size=    1117kB time=00:00:11.74 bitrate= 779.1kbits/s dup=0 drop=586 speed=1.06x    
    07-16 15:07:27.063: frame=  621 fps= 54 q=18.0 size=    1154kB time=00:00:12.35 bitrate= 765.2kbits/s dup=0 drop=616 speed=1.07x    
    07-16 15:07:27.574: frame=  648 fps= 54 q=20.0 size=    1200kB time=00:00:12.91 bitrate= 761.2kbits/s dup=0 drop=643 speed=1.07x    
    07-16 15:07:28.084: frame=  675 fps= 54 q=20.0 size=    1292kB time=00:00:13.42 bitrate= 788.6kbits/s dup=0 drop=670 speed=1.06x    
    07-16 15:07:28.585: frame=  701 fps= 53 q=16.0 size=    1346kB time=00:00:13.95 bitrate= 790.4kbits/s dup=0 drop=696 speed=1.06x    
    07-16 15:07:29.085: frame=  729 fps= 54 q=15.0 size=    1380kB time=00:00:14.48 bitrate= 780.0kbits/s dup=0 drop=724 speed=1.06x    
    07-16 15:07:29.616: frame=  753 fps= 53 q=12.0 size=    1380kB time=00:00:15.00 bitrate= 753.6kbits/s dup=0 drop=748 speed=1.06x    
    07-16 15:07:30.116: frame=  780 fps= 53 q=15.0 size=    1459kB time=00:00:15.51 bitrate= 770.4kbits/s dup=0 drop=775 speed=1.06x    
    07-16 15:07:30.627: frame=  812 fps= 54 q=15.0 size=    1464kB time=00:00:16.16 bitrate= 742.1kbits/s dup=0 drop=807 speed=1.07x    
    07-16 15:07:31.127: frame=  843 fps= 54 q=15.0 size=    1465kB time=00:00:16.78 bitrate= 715.0kbits/s dup=0 drop=838 speed=1.07x    
    07-16 15:07:31.638: frame=  875 fps= 54 q=15.0 size=    1469kB time=00:00:17.41 bitrate= 691.0kbits/s dup=0 drop=870 speed=1.08x    
    07-16 15:07:32.138: frame=  906 fps= 54 q=18.0 size=    1507kB time=00:00:18.04 bitrate= 684.1kbits/s dup=0 drop=901 speed=1.08x    
    07-16 15:07:32.649: frame=  932 fps= 54 q=21.0 size=    1555kB time=00:00:18.55 bitrate= 686.8kbits/s dup=0 drop=927 speed=1.08x    
    07-16 15:07:33.159: frame=  960 fps= 54 q=23.0 size=    1614kB time=00:00:19.13 bitrate= 691.1kbits/s dup=0 drop=955 speed=1.08x    
    07-16 15:07:33.670: frame=  988 fps= 54 q=20.0 size=    1737kB time=00:00:19.66 bitrate= 723.7kbits/s dup=0 drop=983 speed=1.08x    
    07-16 15:07:34.180: frame= 1014 fps= 54 q=16.0 size=    1876kB time=00:00:20.22 bitrate= 759.9kbits/s dup=0 drop=1009 speed=1.08x    
    07-16 15:07:34.671: frame= 1042 fps= 54 q=15.0 size=    1897kB time=00:00:20.75 bitrate= 748.6kbits/s dup=0 drop=1037 speed=1.08x    
    07-16 15:07:35.181: frame= 1069 fps= 54 q=15.0 size=    1911kB time=00:00:21.29 bitrate= 735.3kbits/s dup=0 drop=1064 speed=1.08x    
    07-16 15:07:35.692: frame= 1098 fps= 54 q=15.0 size=    1912kB time=00:00:21.89 bitrate= 715.2kbits/s dup=0 drop=1093 speed=1.08x    
    07-16 15:07:36.182: frame= 1126 fps= 54 q=15.0 size=    1918kB time=00:00:22.43 bitrate= 700.3kbits/s dup=0 drop=1121 speed=1.08x    
    07-16 15:07:36.703: frame= 1154 fps= 54 q=15.0 size=    1918kB time=00:00:23.01 bitrate= 682.8kbits/s dup=0 drop=1149 speed=1.08x    
    07-16 15:07:37.203: frame= 1182 fps= 54 q=15.0 size=    1952kB time=00:00:23.56 bitrate= 678.4kbits/s dup=0 drop=1177 speed=1.08x    
    07-16 15:07:37.724: frame= 1212 fps= 54 q=21.0 size=    1990kB time=00:00:24.19 bitrate= 673.6kbits/s dup=0 drop=1207 speed=1.09x    
    07-16 15:07:38.224: frame= 1240 fps= 55 q=20.0 size=    2085kB time=00:00:24.72 bitrate= 690.5kbits/s dup=0 drop=1235 speed=1.09x    
    07-16 15:07:38.725: frame= 1267 fps= 54 q=16.0 size=    2227kB time=00:00:25.28 bitrate= 721.3kbits/s dup=0 drop=1262 speed=1.09x    
    07-16 15:07:39.235: frame= 1296 fps= 55 q=15.0 size=    2266kB time=00:00:25.86 bitrate= 717.8kbits/s dup=0 drop=1291 speed=1.09x    
    07-16 15:07:39.736: frame= 1321 fps= 54 q=15.0 size=    2279kB time=00:00:26.35 bitrate= 708.3kbits/s dup=0 drop=1316 speed=1.09x    
    07-16 15:07:40.236: frame= 1348 fps= 54 q=15.0 size=    2279kB time=00:00:26.91 bitrate= 693.8kbits/s dup=0 drop=1343 speed=1.09x    
    07-16 15:07:40.747: frame= 1375 fps= 54 q=15.0 size=    2288kB time=00:00:27.42 bitrate= 683.6kbits/s dup=0 drop=1370 speed=1.09x    
    07-16 15:07:41.237: frame= 1402 fps= 54 q=15.0 size=    2289kB time=00:00:27.95 bitrate= 670.6kbits/s dup=0 drop=1397 speed=1.08x    
    07-16 15:07:41.768: frame= 1430 fps= 54 q=15.0 size=    2294kB time=00:00:28.53 bitrate= 658.4kbits/s dup=0 drop=1425 speed=1.09x    
    07-16 15:07:42.278: frame= 1456 fps= 54 q=22.0 size=    2296kB time=00:00:29.04 bitrate= 647.4kbits/s dup=0 drop=1451 speed=1.08x    
    07-16 15:07:42.779: frame= 1485 fps= 54 q=21.0 size=    2350kB time=00:00:29.62 bitrate= 649.6kbits/s dup=0 drop=1480 speed=1.09x    
    07-16 15:07:43.279: frame= 1512 fps= 54 q=20.0 size=    2492kB time=00:00:30.16 bitrate= 676.9kbits/s dup=0 drop=1507 speed=1.08x    
    07-16 15:07:43.790: frame= 1539 fps= 54 q=16.0 size=    2562kB time=00:00:30.72 bitrate= 683.1kbits/s dup=0 drop=1534 speed=1.09x    
    07-16 15:07:44.290: frame= 1566 fps= 54 q=15.0 size=    2581kB time=00:00:31.25 bitrate= 676.4kbits/s dup=0 drop=1561 speed=1.08x    
    07-16 15:07:44.801: frame= 1592 fps= 54 q=15.0 size=    2581kB time=00:00:31.76 bitrate= 665.7kbits/s dup=0 drop=1587 speed=1.08x    
    07-16 15:07:45.301: frame= 1619 fps= 54 q=15.0 size=    2589kB time=00:00:32.29 bitrate= 656.5kbits/s dup=0 drop=1614 speed=1.08x    
    07-16 15:07:45.802: frame= 1646 fps= 54 q=15.0 size=    2589kB time=00:00:32.83 bitrate= 646.0kbits/s dup=0 drop=1641 speed=1.08x    
    07-16 15:07:46.332: frame= 1672 fps= 54 q=15.0 size=    2593kB time=00:00:33.39 bitrate= 636.2kbits/s dup=0 drop=1667 speed=1.08x    
    07-16 15:07:46.823: frame= 1698 fps= 54 q=15.0 size=    2594kB time=00:00:33.87 bitrate= 627.2kbits/s dup=0 drop=1693 speed=1.08x    
    07-16 15:07:47.333: frame= 1724 fps= 54 q=15.0 size=    2597kB time=00:00:34.43 bitrate= 617.9kbits/s dup=0 drop=1719 speed=1.08x    
    07-16 15:07:47.844: frame= 1748 fps= 54 q=17.0 size=    2661kB time=00:00:34.89 bitrate= 624.7kbits/s dup=0 drop=1743 speed=1.08x    
    07-16 15:07:48.344: frame= 1775 fps= 54 q=22.0 size=    2731kB time=00:00:35.43 bitrate= 631.4kbits/s dup=0 drop=1770 speed=1.08x    
    07-16 15:07:48.865: frame= 1800 fps= 54 q=19.0 size=    2867kB time=00:00:35.92 bitrate= 653.8kbits/s dup=0 drop=1795 speed=1.08x    
    07-16 15:07:49.375: frame= 1826 fps= 54 q=17.0 size=    2968kB time=00:00:36.43 bitrate= 667.3kbits/s dup=0 drop=1821 speed=1.07x    
    07-16 15:07:49.876: frame= 1854 fps= 54 q=15.0 size=    3014kB time=00:00:36.98 bitrate= 667.5kbits/s dup=0 drop=1849 speed=1.08x    
    07-16 15:07:50.366: frame= 1878 fps= 54 q=15.0 size=    3041kB time=00:00:37.47 bitrate= 664.7kbits/s dup=0 drop=1873 speed=1.07x    
    07-16 15:07:50.877: frame= 1904 fps= 54 q=15.0 size=    3052kB time=00:00:38.01 bitrate= 657.7kbits/s dup=0 drop=1899 speed=1.07x    
    07-16 15:07:51.387: frame= 1929 fps= 54 q=15.0 size=    3056kB time=00:00:38.49 bitrate= 650.3kbits/s dup=0 drop=1924 speed=1.07x    
    07-16 15:07:51.888: frame= 1955 fps= 54 q=17.0 size=    3060kB time=00:00:39.03 bitrate= 642.2kbits/s dup=0 drop=1950 speed=1.07x    
    07-16 15:07:52.388: frame= 1981 fps= 54 q=17.0 size=    3062kB time=00:00:39.54 bitrate= 634.3kbits/s dup=0 drop=1976 speed=1.07x    
    07-16 15:07:52.899: frame= 2007 fps= 54 q=25.0 size=    3064kB time=00:00:40.07 bitrate= 626.4kbits/s dup=0 drop=2002 speed=1.07x    
    07-16 15:07:53.419: frame= 2036 fps= 54 q=20.0 size=    3255kB time=00:00:40.63 bitrate= 656.1kbits/s dup=0 drop=2031 speed=1.07x    
    07-16 15:07:53.920: frame= 2061 fps= 54 q=21.0 size=    3306kB time=00:00:41.14 bitrate= 658.2kbits/s dup=0 drop=2056 speed=1.07x    
    07-16 15:07:54.420: frame= 2089 fps= 54 q=17.0 size=    3371kB time=00:00:41.70 bitrate= 662.2kbits/s dup=0 drop=2084 speed=1.07x    
    07-16 15:07:54.910: frame= 2116 fps= 54 q=15.0 size=    3438kB time=00:00:42.23 bitrate= 666.8kbits/s dup=0 drop=2111 speed=1.07x    
    07-16 15:07:55.421: frame= 2139 fps= 54 q=15.0 size=    3460kB time=00:00:42.70 bitrate= 663.7kbits/s dup=0 drop=2134 speed=1.07x    
    07-16 15:07:55.921: frame= 2164 fps= 53 q=15.0 size=    3467kB time=00:00:43.21 bitrate= 657.2kbits/s dup=0 drop=2159 speed=1.07x    
    07-16 15:07:56.422: frame= 2189 fps= 53 q=15.0 size=    3470kB time=00:00:43.69 bitrate= 650.6kbits/s dup=0 drop=2184 speed=1.07x    
    07-16 15:07:56.932: frame= 2214 fps= 53 q=15.0 size=    3472kB time=00:00:44.21 bitrate= 643.4kbits/s dup=0 drop=2209 speed=1.07x    
    07-16 15:07:57.433: frame= 2235 fps= 53 q=15.0 size=    3474kB time=00:00:44.60 bitrate= 637.9kbits/s dup=0 drop=2230 speed=1.06x    
    07-16 15:07:57.943: frame= 2260 fps= 53 q=16.0 size=    3547kB time=00:00:45.13 bitrate= 643.7kbits/s dup=0 drop=2255 speed=1.06x    
    07-16 15:07:58.454: frame= 2292 fps= 53 q=24.0 size=    3555kB time=00:00:45.76 bitrate= 636.3kbits/s dup=0 drop=2287 speed=1.06x    
    07-16 15:07:58.964: frame= 2320 fps= 53 q=21.0 size=    3643kB time=00:00:46.34 bitrate= 643.9kbits/s dup=0 drop=2315 speed=1.07x    
    07-16 15:07:59.475: frame= 2348 fps= 53 q=16.0 size=    3700kB time=00:00:46.88 bitrate= 646.6kbits/s dup=0 drop=2343 speed=1.07x    
    07-16 15:07:59.985: frame= 2375 fps= 53 q=22.0 size=    3755kB time=00:00:47.43 bitrate= 648.5kbits/s dup=0 drop=2370 speed=1.07x    
    07-16 15:08:00.486: frame= 2400 fps= 53 q=22.0 size=    3880kB time=00:00:47.92 bitrate= 663.3kbits/s dup=0 drop=2395 speed=1.06x    
    07-16 15:08:00.996: frame= 2427 fps= 53 q=15.0 size=    3977kB time=00:00:48.46 bitrate= 672.2kbits/s dup=0 drop=2422 speed=1.06x    
    07-16 15:08:01.497: frame= 2456 fps= 53 q=18.0 size=    4012kB time=00:00:49.06 bitrate= 669.9kbits/s dup=0 drop=2451 speed=1.07x    
    07-16 15:08:01.997: frame= 2481 fps= 53 q=16.0 size=    4029kB time=00:00:49.55 bitrate= 666.1kbits/s dup=0 drop=2476 speed=1.06x    
    07-16 15:08:02.498: frame= 2507 fps= 53 q=20.0 size=    4036kB time=00:00:50.06 bitrate= 660.4kbits/s dup=0 drop=2502 speed=1.06x    
    07-16 15:08:03.008: frame= 2538 fps= 53 q=15.0 size=    4113kB time=00:00:50.68 bitrate= 664.7kbits/s dup=0 drop=2533 speed=1.07x    
    07-16 15:08:03.529: frame= 2568 fps= 53 q=22.0 size=    4132kB time=00:00:51.26 bitrate= 660.2kbits/s dup=0 drop=2563 speed=1.07x    
    07-16 15:08:04.039: frame= 2596 fps= 53 q=22.0 size=    4184kB time=00:00:51.85 bitrate= 661.1kbits/s dup=0 drop=2591 speed=1.07x    
    07-16 15:08:04.560: frame= 2623 fps= 53 q=23.0 size=    4276kB time=00:00:52.40 bitrate= 668.4kbits/s dup=0 drop=2618 speed=1.07x    
    07-16 15:08:05.060: frame= 2647 fps= 53 q=16.0 size=    4379kB time=00:00:52.87 bitrate= 678.5kbits/s dup=0 drop=2642 speed=1.07x    
    07-16 15:08:05.571: frame= 2671 fps= 53 q=19.0 size=    4425kB time=00:00:53.33 bitrate= 679.6kbits/s dup=0 drop=2666 speed=1.06x    
    07-16 15:08:06.071: frame= 2696 fps= 53 q=15.0 size=    4452kB time=00:00:53.87 bitrate= 677.0kbits/s dup=0 drop=2691 speed=1.06x    
    07-16 15:08:06.582: frame= 2723 fps= 53 q=15.0 size=    4478kB time=00:00:54.38 bitrate= 674.5kbits/s dup=0 drop=2718 speed=1.06x    
    07-16 15:08:07.102: frame= 2750 fps= 53 q=15.0 size=    4479kB time=00:00:54.91 bitrate= 668.1kbits/s dup=0 drop=2745 speed=1.06x    
    07-16 15:08:07.593: frame= 2779 fps= 53 q=15.0 size=    4558kB time=00:00:55.49 bitrate= 672.8kbits/s dup=0 drop=2774 speed=1.06x    
    07-16 15:08:08.093: frame= 2810 fps= 53 q=16.0 size=    4560kB time=00:00:56.12 bitrate= 665.5kbits/s dup=0 drop=2805 speed=1.07x    
    07-16 15:08:08.594: frame= 2841 fps= 53 q=21.0 size=    4565kB time=00:00:56.74 bitrate= 658.9kbits/s dup=0 drop=2836 speed=1.07x    
    07-16 15:08:09.104: frame= 2871 fps= 54 q=21.0 size=    4616kB time=00:00:57.33 bitrate= 659.5kbits/s dup=0 drop=2866 speed=1.07x    
    07-16 15:08:09.615: frame= 2897 fps= 54 q=22.0 size=    4673kB time=00:00:57.88 bitrate= 661.3kbits/s dup=0 drop=2892 speed=1.07x    
    07-16 15:08:10.115: frame= 2925 fps= 54 q=16.0 size=    4779kB time=00:00:58.42 bitrate= 670.1kbits/s dup=0 drop=2920 speed=1.07x    
    07-16 15:08:10.616: frame= 2951 fps= 54 q=15.0 size=    4817kB time=00:00:58.95 bitrate= 669.4kbits/s dup=0 drop=2946 speed=1.07x    
    07-16 15:08:11.146: frame= 2978 fps= 54 q=15.0 size=    4851kB time=00:00:59.51 bitrate= 667.8kbits/s dup=0 drop=2973 speed=1.07x    
    07-16 15:08:11.667: frame= 3007 fps= 54 q=21.0 size=    4852kB time=00:01:00.04 bitrate= 661.9kbits/s dup=0 drop=3002 speed=1.07x    
    07-16 15:08:12.157: frame= 3037 fps= 54 q=15.0 size=    4933kB time=00:01:00.65 bitrate= 666.3kbits/s dup=0 drop=3032 speed=1.07x    
    07-16 15:08:12.648: frame= 3069 fps= 54 q=15.0 size=    4939kB time=00:01:01.30 bitrate= 660.0kbits/s dup=0 drop=3064 speed=1.07x    
    07-16 15:08:13.148: frame= 3101 fps= 54 q=15.0 size=    4939kB time=00:01:01.88 bitrate= 653.9kbits/s dup=0 drop=3096 speed=1.07x    
    07-16 15:08:13.238: frame= 3101 fps= 54 q=-1.0 Lsize=    4994kB time=00:01:02.02 bitrate= 659.6kbits/s dup=0 drop=3096 speed=1.07x    
    07-16 15:08:13.238: video:4923kB audio:16kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.108781%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] frame I:13    Avg QP:14.15  size: 72152
    07-16 15:08:13.248: [libx264 @ 0xb5428800] frame P:3088  Avg QP:17.25  size:  1329
    07-16 15:08:13.248: [libx264 @ 0xb5428800] mb I  I16..4: 100.0%  0.0%  0.0%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] mb P  I16..4:  0.8%  0.0%  0.0%  P16..4:  7.0%  0.0%  0.0%  0.0%  0.0%    skip:92.2%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] coded y,uvDC,uvAC intra: 49.6% 59.6% 45.8% inter: 2.5% 4.8% 1.9%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] i16 v,h,dc,p: 50% 26% 13% 10%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] i8c dc,h,v,p: 45% 24% 21% 10%
    07-16 15:08:13.248: [libx264 @ 0xb5428800] kb/s:650.25
    07-16 15:08:13.258: [aac @ 0xb5429000] Qavg: 65536.000


  


• ffmpeg not setting GOP size for x264

  5 juillet 2012, par Chris Robinson

  Can someone please explain to me why the following settings :

  ffmpeg -i test.avi -vcodec libx264 -g 2 -keyint_min 1 -sc_threshold 100000000 -bf 1 test.mp4

  produces the following output :

  ffmpeg version N-41668-g564bb24 Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Jun 17 2012 20:18:05 with gcc 4.6.3
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --ena  libavutil      51. 58.100 / 51. 58.100
  
    libavcodec     54. 25.100 / 54. 25.100
  
    libavformat    54.  6.101 / 54.  6.101
  
    libavdevice    54.  0.100 / 54.  0.100
  
    libavfilter     2. 81.100 /  2. 81.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Input #0, avi, from 'test.avi':
  
    Metadata:
  
      encoder         : Lavf54.6.101
  
    Duration: 00:00:01.70, start: 0.000000, bitrate: 4258 kb/s
  
  Stream #0:0: Video: mpeg4 (Simple Profile) (DIVX / 0x58564944), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc
  
  Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16, 128 kb/s
  
  [buffer @ 0000000004115600] w:1280 h:720 pixfmt:yuv420p tb:1001/30000 fr:30000/1001 sar:1/1 sws_param:flags=2
  
  [ffmpeg_buffersink @ 00000000041157a0] No opaque field provided
  
  [libx264 @ 000000000411f120] using SAR=1/1
  
  [libx264 @ 000000000411f120] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
  
  [libx264 @ 000000000411f120] profile High, level 3.1
  
  [libx264 @ 000000000411f120] 264 - core 125 r2200 999b753 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=-2 threads=36 lookahead_threads=6 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 keOutput #0, mp4, to 'test.mp4':
  
    Metadata:
  
      encoder         : Lavf54.6.101
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30k tbn, 29.97 tbc
  
      Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
    Stream #0:1 -> #0:1 (mp3 -> libvo_aacenc)
  
  Press [q] to stop, [?] for help
  
  [libvo_aacenc @ 0000000001ebe240] Que input is backward in time
  
  Last message repeated 8 times
  
  frame=   35 fps=0.0 q=-1.0 Lsize=     466kB time=00:00:01.10 bitrate=3466.6kbits/s dup=1 drop=0    
  
  
  
  video:436kB audio:28kB global headers:0kB muxing overhead 0.558509%
  
  [libx264 @ 000000000411f120] frame I:1     Avg QP:24.93  size: 92398
  
  [libx264 @ 000000000411f120] frame P:28    Avg QP:26.82  size: 12010
  
  [libx264 @ 000000000411f120] frame B:6     Avg QP:30.37  size:  2764
  
  [libx264 @ 000000000411f120] consecutive B-frames: 74.3%  5.7%  8.6% 11.4%
  
  [libx264 @ 000000000411f120] mb I  I16..4: 41.5% 40.1% 18.4%
  
  [libx264 @ 000000000411f120] mb P  I16..4:  3.9%  1.4%  0.6%  P16..4: 14.3%  4.7%  3.2%  0.0%  0.0%    skip:72.0%
  
  [libx264 @ 000000000411f120] mb B  I16..4:  1.1%  0.4%  0.1%  B16..8: 14.2%  2.8%  0.6%  direct: 1.1%  skip:79.8%  L0:49.8% L1:39.5% BI:10.8%
  
  [libx264 @ 000000000411f120] 8x8 transform intra:29.9% inter:76.4%
  
  [libx264 @ 000000000411f120] coded y,uvDC,uvAC intra: 31.1% 34.4% 18.7% inter: 10.2% 6.3% 3.0%
  
  [libx264 @ 000000000411f120] i16 v,h,dc,p: 62% 34%  3%  0%
  
  [libx264 @ 000000000411f120] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 23% 38%  4%  4%  3%  3%  2%  5%
  
  [libx264 @ 000000000411f120] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 35% 16%  1%  2%  2%  1%  1%  1%
  
  [libx264 @ 000000000411f120] i8c dc,h,v,p: 52% 20% 24%  3%
  
  [libx264 @ 000000000411f120] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 000000000411f120] ref P L0: 70.5% 10.1% 12.1%  7.3%
  
  [libx264 @ 000000000411f120] ref B L0: 81.1% 16.9%  2.0%
  
  [libx264 @ 000000000411f120] ref B L1: 89.7% 10.3%
  
  [libx264 @ 000000000411f120] kb/s:3050.18

  Why am I not getting an I-Frame every second frame ? Is there something else I can set to do enforce this ? If not, can you suggest how to do this using the mpeg4 codec. It's vital that I can extract what type of frame has been encoded during the encoding process and that I can set a specific GOP structure.

• How to log unconverted files in FFMPEG due to error ?

  10 juillet 2017, par eugenemon

  I am converting 30,000 video files (each with different number of data/video/audio/subtitle streams) using a single batch file. I do not require data/subtitle streams. This is the code I am using for the batch file :

  for %%i in (*.dat *.mpg *.mpeg) do ffmpeg -hide_banner -v info -n -i %%i -map 0 -dn -sn  -c:v libx264 -crf 20  -c:a aac -b:a 192k  "%%~ni.mp4" >> log.txt 2>&1
  
  pause

  The resulting log file that I get is 1.67gb in file size and is extremely difficult for me to go through to find the errors of files that weren’t converted.

  An example of a successfully converted file would look like this in the log file :

      Input #0, mpeg, from '571317.mpg':
  
    Duration: 00:05:06.02, start: 0.060000, bitrate: 2991 kb/s
  
      Stream #0:0[0x1bf]: Data: dvd_nav_packet
  
      Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
      Stream #0:3[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 224 kb/s
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (mpeg2video (native) -> h264 (libx264))
  
    Stream #0:2 -> #0:1 (ac3 (native) -> aac (native))
  
    Stream #0:3 -> #0:2 (mp2 (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 000000000043c3a0] using SAR=8/9
  
  [libx264 @ 000000000043c3a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 000000000043c3a0] profile High, level 3.0
  
  [libx264 @ 000000000043c3a0] 264 - core 148 r2762 90a61ec - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=-2 threads=6 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=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'F:\571317.mp4':
  
    Metadata:
  
      encoder         : Lavf57.71.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(top coded first (swapped)), 720x480 [SAR 8:9 DAR 4:3], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
  
      Metadata:
  
        encoder         : Lavc57.89.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 192 kb/s
  
      Metadata:
  
        encoder         : Lavc57.89.100 aac
  
      Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 192 kb/s
  
      Metadata:
  
        encoder         : Lavc57.89.100 aac
  
  frame=   83 fps=0.0 q=26.0 size=     168kB time=00:00:02.70 bitrate= 508.4kbits/s speed=5.26x    
  
  frame=  132 fps=128 q=26.0 size=     660kB time=00:00:04.41 bitrate=1224.4kbits/s speed=4.29x    
  
  frame=  182 fps=118 q=26.0 size=    1126kB time=00:00:06.05 bitrate=1522.0kbits/s speed=3.92x    
  
  frame=  235 fps=114 q=26.0 size=    1529kB time=00:00:07.78 bitrate=1608.5kbits/s speed=3.78x    
  
  frame=  294 fps=114 q=26.0 size=    1867kB time=00:00:09.77 bitrate=1564.9kbits/s speed= 3.8x    
  
  frame=  352 fps=114 q=26.0 size=    2175kB time=00:00:11.71 bitrate=1521.5kbits/s speed=3.79x    
  
  frame=  408 fps=113 q=26.0 size=    2681kB time=00:00:13.54 bitrate=1621.1kbits/s speed=3.76x    
  
  frame=  466 fps=113 q=26.0 size=    3276kB time=00:00:15.50 bitrate=1730.6kbits/s speed=3.77x    
  
  [mpeg @ 000000000042a820] New subtitle stream 0:4 at pos:6483982 and DTS:17.1437s
  
  frame=  528 fps=114 q=26.0 size=    3868kB time=00:00:17.57 bitrate=1802.4kbits/s speed=3.79x    
  
  frame=  572 fps=111 q=26.0 size=    4508kB time=00:00:19.09 bitrate=1934.4kbits/s speed=3.71x    
  
  frame=  611 fps=108 q=26.0 size=    5215kB time=00:00:20.43 bitrate=2090.4kbits/s speed=3.61x    
  
  frame=  656 fps=106 q=26.0 size=    6040kB time=00:00:21.86 bitrate=2262.6kbits/s speed=3.54x    
  
  frame=  698 fps=104 q=26.0 size=    6724kB time=00:00:23.23 bitrate=2370.8kbits/s speed=3.47x    
  
  frame=  743 fps=103 q=26.0 size=    7451kB time=00:00:24.72 bitrate=2468.6kbits/s speed=3.43x    
  
  frame=  793 fps=103 q=26.0 size=    8007kB time=00:00:26.45 bitrate=2479.7kbits/s speed=3.43x    
  
  frame=  851 fps=103 q=26.0 size=    8495kB time=00:00:28.33 bitrate=2456.3kbits/s speed=3.44x    
  
  frame=  904 fps=103 q=26.0 size=    8992kB time=00:00:30.12 bitrate=2445.4kbits/s speed=3.44x    
  
  frame=  957 fps=103 q=26.0 size=    9475kB time=00:00:31.91 bitrate=2432.1kbits/s speed=3.44x    
  
  frame= 1014 fps=104 q=26.0 size=    9967kB time=00:00:33.81 bitrate=2414.6kbits/s speed=3.46x    
  
  frame= 1071 fps=104 q=26.0 size=   10297kB time=00:00:35.73 bitrate=2360.7kbits/s speed=3.47x    
  
  frame= 1121 fps=104 q=26.0 size=   10733kB time=00:00:37.39 bitrate=2351.1kbits/s speed=3.46x    
  
  frame= 1187 fps=105 q=26.0 size=   11145kB time=00:00:39.57 bitrate=2307.1kbits/s speed=3.49x    
  
  frame= 1241 fps=105 q=26.0 size=   11635kB time=00:00:41.36 bitrate=2304.1kbits/s speed=3.48x    
  
  frame= 1284 fps=104 q=26.0 size=   12291kB time=00:00:42.79 bitrate=2352.8kbits/s speed=3.45x    
  
  frame= 1332 fps=103 q=26.0 size=   13049kB time=00:00:44.37 bitrate=2409.0kbits/s speed=3.44x    
  
  frame= 1386 fps=103 q=26.0 size=   13608kB time=00:00:46.22 bitrate=2411.5kbits/s speed=3.45x    
  
  frame= 1437 fps=103 q=26.0 size=   14063kB time=00:00:47.95 bitrate=2402.3kbits/s speed=3.44x    
  
  frame= 1502 fps=104 q=26.0 size=   14504kB time=00:00:50.09 bitrate=2372.0kbits/s speed=3.47x    
  
  frame= 1558 fps=104 q=26.0 size=   14947kB time=00:00:51.94 bitrate=2357.2kbits/s speed=3.47x    
  
  frame= 1614 fps=104 q=26.0 size=   15502kB time=00:00:53.80 bitrate=2360.3kbits/s speed=3.48x    
  
  frame= 1668 fps=104 q=26.0 size=   16041kB time=00:00:55.63 bitrate=2361.9kbits/s speed=3.48x    
  
  frame= 1725 fps=105 q=26.0 size=   16509kB time=00:00:57.49 bitrate=2352.2kbits/s speed=3.48x    
  
  frame= 1779 fps=105 q=26.0 size=   16980kB time=00:00:59.30 bitrate=2345.4kbits/s speed=3.48x    
  
  frame= 1832 fps=104 q=26.0 size=   17487kB time=00:01:01.16 bitrate=2342.2kbits/s speed=3.49x    
  
  frame= 1886 fps=104 q=26.0 size=   17921kB time=00:01:02.93 bitrate=2332.8kbits/s speed=3.49x    
  
  frame= 1947 fps=105 q=26.0 size=   18284kB time=00:01:04.93 bitrate=2306.6kbits/s speed= 3.5x    
  
  frame= 2009 fps=105 q=26.0 size=   18775kB time=00:01:06.98 bitrate=2296.1kbits/s speed=3.51x    
  
  frame= 2060 fps=105 q=26.0 size=   19307kB time=00:01:08.71 bitrate=2301.7kbits/s speed=3.51x    
  
  frame= 2113 fps=105 q=26.0 size=   19916kB time=00:01:10.48 bitrate=2314.7kbits/s speed=3.51x    
  
  frame= 2169 fps=105 q=26.0 size=   20374kB time=00:01:12.36 bitrate=2306.5kbits/s speed=3.51x    
  
  frame= 2235 fps=106 q=26.0 size=   20667kB time=00:01:14.58 bitrate=2270.0kbits/s speed=3.53x    
  
  frame= 2286 fps=106 q=26.0 size=   21142kB time=00:01:16.22 bitrate=2272.2kbits/s speed=3.52x    
  
  frame= 2340 fps=106 q=26.0 size=   21715kB time=00:01:18.05 bitrate=2278.9kbits/s speed=3.52x    
  
  frame= 2391 fps=105 q=26.0 size=   22368kB time=00:01:19.74 bitrate=2297.8kbits/s speed=3.52x    
  
  frame= 2439 fps=105 q=26.0 size=   23051kB time=00:01:21.32 bitrate=2322.0kbits/s speed=3.51x    
  
  frame= 2484 fps=105 q=26.0 size=   23719kB time=00:01:22.83 bitrate=2345.7kbits/s speed=3.49x    
  
  frame= 2528 fps=104 q=26.0 size=   24432kB time=00:01:24.33 bitrate=2373.3kbits/s speed=3.48x    
  
  frame= 2568 fps=104 q=26.0 size=   25074kB time=00:01:25.67 bitrate=2397.5kbits/s speed=3.46x    
  
  frame= 2623 fps=104 q=26.0 size=   25575kB time=00:01:27.50 bitrate=2394.2kbits/s speed=3.46x    
  
  frame= 2681 fps=104 q=26.0 size=   26025kB time=00:01:29.38 bitrate=2385.1kbits/s speed=3.47x    
  
  frame= 2734 fps=104 q=26.0 size=   26428kB time=00:01:31.17 bitrate=2374.4kbits/s speed=3.47x    
  
  frame= 2787 fps=104 q=26.0 size=   26856kB time=00:01:32.97 bitrate=2366.4kbits/s speed=3.47x    
  
  frame= 2845 fps=104 q=26.0 size=   27262kB time=00:01:34.86 bitrate=2354.0kbits/s speed=3.47x    
  
  frame= 2905 fps=104 q=26.0 size=   27649kB time=00:01:36.87 bitrate=2338.1kbits/s speed=3.48x    
  
  frame= 2958 fps=104 q=26.0 size=   28314kB time=00:01:38.66 bitrate=2350.8kbits/s speed=3.48x    
  
  frame= 3014 fps=104 q=26.0 size=   28794kB time=00:01:40.52 bitrate=2346.6kbits/s speed=3.48x    
  
  frame= 3075 fps=105 q=26.0 size=   29217kB time=00:01:42.57 bitrate=2333.5kbits/s speed=3.49x    
  
  frame= 3129 fps=105 q=26.0 size=   29695kB time=00:01:44.36 bitrate=2330.9kbits/s speed=3.49x    
  
  frame= 3182 fps=105 q=26.0 size=   30167kB time=00:01:46.15 bitrate=2328.0kbits/s speed=3.49x    
  
  frame= 3240 fps=105 q=26.0 size=   30653kB time=00:01:48.09 bitrate=2323.0kbits/s speed=3.49x    
  
  frame= 3296 fps=105 q=26.0 size=   31139kB time=00:01:49.97 bitrate=2319.6kbits/s speed= 3.5x    
  
  frame= 3356 fps=105 q=26.0 size=   31690kB time=00:01:51.93 bitrate=2319.2kbits/s speed= 3.5x    
  
  frame= 3417 fps=105 q=26.0 size=   32178kB time=00:01:54.00 bitrate=2312.2kbits/s speed=3.51x    
  
  frame= 3466 fps=105 q=26.0 size=   32767kB time=00:01:55.60 bitrate=2321.9kbits/s speed= 3.5x    
  
  frame= 3516 fps=105 q=26.0 size=   33321kB time=00:01:57.29 bitrate=2327.3kbits/s speed= 3.5x    
  
  frame= 3566 fps=105 q=26.0 size=   33858kB time=00:01:58.95 bitrate=2331.7kbits/s speed=3.49x    
  
  frame= 3612 fps=104 q=26.0 size=   34515kB time=00:02:00.49 bitrate=2346.6kbits/s speed=3.49x    
  
  frame= 3656 fps=104 q=26.0 size=   35268kB time=00:02:02.00 bitrate=2368.0kbits/s speed=3.48x    
  
  frame= 3699 fps=104 q=26.0 size=   36006kB time=00:02:03.34 bitrate=2391.3kbits/s speed=3.46x    
  
  frame= 3742 fps=104 q=26.0 size=   36684kB time=00:02:04.84 bitrate=2407.1kbits/s speed=3.46x    
  
  frame= 3792 fps=103 q=26.0 size=   37287kB time=00:02:06.44 bitrate=2415.7kbits/s speed=3.45x    
  
  frame= 3844 fps=103 q=26.0 size=   37684kB time=00:02:08.25 bitrate=2407.0kbits/s speed=3.45x    
  
  frame= 3902 fps=104 q=26.0 size=   38066kB time=00:02:10.19 bitrate=2395.1kbits/s speed=3.45x    
  
  frame= 3960 fps=104 q=26.0 size=   38549kB time=00:02:12.07 bitrate=2391.0kbits/s speed=3.46x    
  
  frame= 4014 fps=104 q=26.0 size=   39081kB time=00:02:13.90 bitrate=2390.8kbits/s speed=3.46x    
  
  frame= 4071 fps=104 q=26.0 size=   39649kB time=00:02:15.80 bitrate=2391.6kbits/s speed=3.46x    
  
  frame= 4126 fps=104 q=26.0 size=   40192kB time=00:02:17.62 bitrate=2392.4kbits/s speed=3.46x    
  
  frame= 4180 fps=104 q=26.0 size=   40736kB time=00:02:19.47 bitrate=2392.6kbits/s speed=3.46x    
  
  frame= 4237 fps=104 q=26.0 size=   41279kB time=00:02:21.35 bitrate=2392.3kbits/s speed=3.47x    
  
  frame= 4292 fps=104 q=26.0 size=   41799kB time=00:02:23.25 bitrate=2390.3kbits/s speed=3.47x    
  
  frame= 4346 fps=104 q=26.0 size=   42355kB time=00:02:25.00 bitrate=2392.9kbits/s speed=3.47x    
  
  frame= 4387 fps=104 q=26.0 size=   42997kB time=00:02:26.36 bitrate=2406.5kbits/s speed=3.46x    
  
  frame= 4430 fps=103 q=26.0 size=   43698kB time=00:02:27.79 bitrate=2422.1kbits/s speed=3.45x    
  
  frame= 4478 fps=103 q=26.0 size=   44374kB time=00:02:29.35 bitrate=2433.9kbits/s speed=3.44x    
  
  frame= 4541 fps=103 q=26.0 size=   44857kB time=00:02:31.46 bitrate=2426.1kbits/s speed=3.45x    
  
  frame= 4607 fps=104 q=26.0 size=   45173kB time=00:02:33.68 bitrate=2407.9kbits/s speed=3.46x    
  
  frame= 4670 fps=104 q=26.0 size=   45525kB time=00:02:35.77 bitrate=2394.1kbits/s speed=3.47x    
  
  frame= 4732 fps=104 q=26.0 size=   45985kB time=00:02:37.84 bitrate=2386.6kbits/s speed=3.47x    
  
  frame= 4791 fps=104 q=26.0 size=   46416kB time=00:02:39.80 bitrate=2379.4kbits/s speed=3.48x    
  
  frame= 4853 fps=104 q=26.0 size=   46853kB time=00:02:41.89 bitrate=2370.8kbits/s speed=3.48x    
  
  frame= 4914 fps=105 q=26.0 size=   47318kB time=00:02:43.88 bitrate=2365.3kbits/s speed=3.49x    
  
  frame= 4972 fps=105 q=26.0 size=   47760kB time=00:02:45.84 bitrate=2359.1kbits/s speed=3.49x    
  
  frame= 5030 fps=105 q=26.0 size=   48130kB time=00:02:47.82 bitrate=2349.3kbits/s speed= 3.5x    
  
  frame= 5092 fps=105 q=26.0 size=   48527kB time=00:02:49.87 bitrate=2340.1kbits/s speed= 3.5x    
  
  frame= 5147 fps=105 q=23.0 size=   48906kB time=00:02:51.73 bitrate=2332.9kbits/s speed= 3.5x    
  
  frame= 5212 fps=105 q=26.0 size=   49346kB time=00:02:53.90 bitrate=2324.5kbits/s speed=3.51x    
  
  frame= 5270 fps=105 q=26.0 size=   49746kB time=00:02:55.82 bitrate=2317.7kbits/s speed=3.51x    
  
  frame= 5322 fps=105 q=26.0 size=   50410kB time=00:02:57.51 bitrate=2326.3kbits/s speed=3.51x    
  
  frame= 5369 fps=105 q=26.0 size=   51006kB time=00:02:59.11 bitrate=2332.8kbits/s speed=3.51x    
  
  frame= 5421 fps=105 q=26.0 size=   51600kB time=00:03:00.88 bitrate=2336.9kbits/s speed=3.51x    
  
  frame= 5478 fps=105 q=26.0 size=   52072kB time=00:03:02.76 bitrate=2334.0kbits/s speed=3.51x    
  
  frame= 5550 fps=105 q=26.0 size=   52432kB time=00:03:05.17 bitrate=2319.6kbits/s speed=3.52x    
  
  frame= 5614 fps=106 q=26.0 size=   52805kB time=00:03:07.34 bitrate=2309.0kbits/s speed=3.52x    
  
  frame= 5663 fps=106 q=26.0 size=   53439kB time=00:03:08.94 bitrate=2316.9kbits/s speed=3.52x    
  
  frame= 5710 fps=105 q=26.0 size=   53940kB time=00:03:10.54 bitrate=2319.0kbits/s speed=3.52x    
  
  frame= 5770 fps=105 q=26.0 size=   54347kB time=00:03:12.55 bitrate=2312.1kbits/s speed=3.52x    
  
  frame= 5830 fps=106 q=26.0 size=   54816kB time=00:03:14.49 bitrate=2308.8kbits/s speed=3.52x    
  
  frame= 5876 fps=105 q=26.0 size=   55518kB time=00:03:16.01 bitrate=2320.3kbits/s speed=3.52x    
  
  frame= 5921 fps=105 q=26.0 size=   56249kB time=00:03:17.52 bitrate=2332.8kbits/s speed=3.51x    
  
  frame= 5976 fps=105 q=26.0 size=   56854kB time=00:03:19.33 bitrate=2336.5kbits/s speed=3.51x    
  
  frame= 6029 fps=105 q=26.0 size=   57370kB time=00:03:21.19 bitrate=2335.9kbits/s speed=3.51x    
  
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  frame= 6139 fps=105 q=26.0 size=   58145kB time=00:03:24.82 bitrate=2325.6kbits/s speed=3.51x    
  
  frame= 6189 fps=105 q=26.0 size=   58602kB time=00:03:26.48 bitrate=2324.9kbits/s speed=3.51x    
  
  frame= 6246 fps=105 q=26.0 size=   59082kB time=00:03:28.38 bitrate=2322.6kbits/s speed=3.51x    
  
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  frame= 6359 fps=105 q=26.0 size=   60028kB time=00:03:32.13 bitrate=2318.0kbits/s speed=3.51x    
  
  frame= 6418 fps=105 q=26.0 size=   60486kB time=00:03:34.12 bitrate=2314.1kbits/s speed=3.52x    
  
  frame= 6478 fps=106 q=26.0 size=   60947kB time=00:03:36.10 bitrate=2310.3kbits/s speed=3.52x    
  
  frame= 6537 fps=106 q=26.0 size=   61412kB time=00:03:38.09 bitrate=2306.8kbits/s speed=3.52x    
  
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  frame= 6658 fps=106 q=26.0 size=   62386kB time=00:03:42.14 bitrate=2300.6kbits/s speed=3.53x    
  
  frame= 6727 fps=106 q=26.0 size=   62836kB time=00:03:44.46 bitrate=2293.2kbits/s speed=3.54x    
  
  frame= 6780 fps=106 q=26.0 size=   63400kB time=00:03:46.17 bitrate=2296.3kbits/s speed=3.54x    
  
  frame= 6830 fps=106 q=26.0 size=   63962kB time=00:03:47.88 bitrate=2299.3kbits/s speed=3.53x    
  
  frame= 6884 fps=106 q=26.0 size=   64394kB time=00:03:49.67 bitrate=2296.8kbits/s speed=3.53x    
  
  frame= 6940 fps=106 q=26.0 size=   64782kB time=00:03:51.53 bitrate=2292.1kbits/s speed=3.53x    
  
  frame= 6994 fps=106 q=26.0 size=   65278kB time=00:03:53.36 bitrate=2291.5kbits/s speed=3.53x    
  
  frame= 7048 fps=106 q=26.0 size=   65778kB time=00:03:55.11 bitrate=2291.9kbits/s speed=3.53x    
  
  frame= 7104 fps=106 q=26.0 size=   66288kB time=00:03:56.99 bitrate=2291.4kbits/s speed=3.53x    
  
  frame= 7162 fps=106 q=26.0 size=   66668kB time=00:03:58.93 bitrate=2285.8kbits/s speed=3.54x    
  
  frame= 7223 fps=106 q=26.0 size=   66988kB time=00:04:00.98 bitrate=2277.2kbits/s speed=3.54x    
  
  frame= 7285 fps=106 q=26.0 size=   67304kB time=00:04:03.05 bitrate=2268.5kbits/s speed=3.54x    
  
  frame= 7341 fps=106 q=26.0 size=   67682kB time=00:04:04.97 bitrate=2263.3kbits/s speed=3.54x    
  
  frame= 7399 fps=106 q=26.0 size=   68156kB time=00:04:06.82 bitrate=2262.0kbits/s speed=3.55x    
  
  frame= 7459 fps=106 q=26.0 size=   68626kB time=00:04:08.85 bitrate=2259.1kbits/s speed=3.55x    
  
  frame= 7519 fps=106 q=26.0 size=   69070kB time=00:04:10.85 bitrate=2255.5kbits/s speed=3.55x    
  
  frame= 7572 fps=106 q=26.0 size=   69583kB time=00:04:12.65 bitrate=2256.2kbits/s speed=3.55x    
  
  frame= 7624 fps=106 q=26.0 size=   70046kB time=00:04:14.37 bitrate=2255.7kbits/s speed=3.55x    
  
  frame= 7678 fps=106 q=26.0 size=   70486kB time=00:04:16.14 bitrate=2254.2kbits/s speed=3.55x    
  
  frame= 7726 fps=106 q=26.0 size=   70960kB time=00:04:17.74 bitrate=2255.3kbits/s speed=3.54x    
  
  frame= 7768 fps=106 q=26.0 size=   71567kB time=00:04:19.15 bitrate=2262.3kbits/s speed=3.54x    
  
  frame= 7816 fps=106 q=26.0 size=   72193kB time=00:04:20.75 bitrate=2268.0kbits/s speed=3.54x    
  
  frame= 7874 fps=106 q=26.0 size=   72495kB time=00:04:22.67 bitrate=2260.9kbits/s speed=3.54x    
  
  frame= 7933 fps=106 q=26.0 size=   72901kB time=00:04:24.64 bitrate=2256.7kbits/s speed=3.54x    
  
  frame= 7986 fps=106 q=26.0 size=   73449kB time=00:04:26.41 bitrate=2258.5kbits/s speed=3.54x    
  
  frame= 8041 fps=106 q=26.0 size=   74045kB time=00:04:28.24 bitrate=2261.3kbits/s speed=3.54x    
  
  frame= 8098 fps=106 q=26.0 size=   74565kB time=00:04:30.16 bitrate=2261.0kbits/s speed=3.54x    
  
  frame= 8147 fps=106 q=26.0 size=   75117kB time=00:04:31.85 bitrate=2263.6kbits/s speed=3.54x    
  
  frame= 8198 fps=106 q=26.0 size=   75839kB time=00:04:33.51 bitrate=2271.5kbits/s speed=3.53x    
  
  frame= 8248 fps=106 q=26.0 size=   76482kB time=00:04:35.22 bitrate=2276.5kbits/s speed=3.53x    
  
  frame= 8297 fps=106 q=26.0 size=   77092kB time=00:04:36.82 bitrate=2281.4kbits/s speed=3.53x    
  
  frame= 8356 fps=106 q=26.0 size=   77645kB time=00:04:38.74 bitrate=2281.9kbits/s speed=3.53x    
  
  frame= 8414 fps=106 q=26.0 size=   78104kB time=00:04:40.74 bitrate=2279.0kbits/s speed=3.53x    
  
  frame= 8474 fps=106 q=26.0 size=   78606kB time=00:04:42.70 bitrate=2277.8kbits/s speed=3.54x    
  
  frame= 8528 fps=106 q=26.0 size=   79172kB time=00:04:44.52 bitrate=2279.5kbits/s speed=3.54x    
  
  frame= 8587 fps=106 q=26.0 size=   79795kB time=00:04:46.46 bitrate=2281.9kbits/s speed=3.54x    
  
  frame= 8653 fps=106 q=26.0 size=   80391kB time=00:04:48.68 bitrate=2281.3kbits/s speed=3.54x    
  
  frame= 8718 fps=106 q=26.0 size=   81021kB time=00:04:50.90 bitrate=2281.6kbits/s speed=3.55x    
  
  frame= 8779 fps=106 q=26.0 size=   81570kB time=00:04:52.90 bitrate=2281.3kbits/s speed=3.55x    
  
  frame= 8826 fps=106 q=26.0 size=   82147kB time=00:04:54.50 bitrate=2285.0kbits/s speed=3.55x    
  
  frame= 8882 fps=106 q=26.0 size=   82800kB time=00:04:56.36 bitrate=2288.8kbits/s speed=3.55x    
  
  frame= 8950 fps=106 q=26.0 size=   83343kB time=00:04:58.64 bitrate=2286.2kbits/s speed=3.55x    
  
  frame= 9018 fps=107 q=26.0 size=   83935kB time=00:05:00.90 bitrate=2285.1kbits/s speed=3.56x    
  
  frame= 9086 fps=107 q=26.0 size=   84481kB time=00:05:03.14 bitrate=2282.9kbits/s speed=3.56x    
  
  frame= 9151 fps=107 q=26.0 size=   85052kB time=00:05:05.30 bitrate=2282.2kbits/s speed=3.57x    
  
  frame= 9161 fps=106 q=-1.0 Lsize=   85813kB time=00:05:06.02 bitrate=2297.1kbits/s speed=3.56x    
  
  video:70963kB audio:14493kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.417440%
  
  [libx264 @ 000000000043c3a0] frame I:43    Avg QP:17.04  size: 36009
  
  [libx264 @ 000000000043c3a0] frame P:2866  Avg QP:20.64  size: 16000
  
  [libx264 @ 000000000043c3a0] frame B:6252  Avg QP:24.39  size:  4040
  
  [libx264 @ 000000000043c3a0] consecutive B-frames:  1.0%  6.9% 51.7% 40.5%
  
  [libx264 @ 000000000043c3a0] mb I  I16..4: 27.5% 65.5%  7.1%
  
  [libx264 @ 000000000043c3a0] mb P  I16..4:  3.7% 12.3%  0.8%  P16..4: 35.0% 15.9%  7.6%  0.0%  0.0%    skip:24.7%
  
  [libx264 @ 000000000043c3a0] mb B  I16..4:  0.4%  0.8%  0.0%  B16..8: 42.8%  4.8%  1.0%  direct: 5.4%  skip:44.8%  L0:34.0% L1:43.7% BI:22.3%
  
  [libx264 @ 000000000043c3a0] 8x8 transform intra:71.3% inter:82.4%
  
  [libx264 @ 000000000043c3a0] coded y,uvDC,uvAC intra: 65.8% 73.9% 23.9% inter: 26.4% 20.4% 1.3%
  
  [libx264 @ 000000000043c3a0] i16 v,h,dc,p: 21% 47%  5% 28%
  
  [libx264 @ 000000000043c3a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 26% 26%  4%  4%  4%  6%  4%  6%
  
  [libx264 @ 000000000043c3a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 28%  8%  4%  6%  6%  8%  4%  7%
  
  [libx264 @ 000000000043c3a0] i8c dc,h,v,p: 41% 31% 18%  9%
  
  [libx264 @ 000000000043c3a0] Weighted P-Frames: Y:3.0% UV:2.5%
  
  [libx264 @ 000000000043c3a0] ref P L0: 61.5% 19.2% 15.3%  3.9%  0.1%
  
  [libx264 @ 000000000043c3a0] ref B L0: 83.3% 15.0%  1.7%
  
  [libx264 @ 000000000043c3a0] ref B L1: 97.3%  2.7%
  
  [libx264 @ 000000000043c3a0] kb/s:1901.79
  
  [aac @ 00000000004b1080] Qavg: 583.592
  
  [aac @ 0000000000474440] Qavg: 396.171

  And an example of a file that didn’t converted (in this case due to the fact that I didn’t specify to ignore subtitle stream, which I corrected by adding -sn to the batch file.) :

  Input #0, mpeg, from '571314.mpg':
  
    Duration: 00:05:44.78, start: 0.060000, bitrate: 2989 kb/s
  
      Stream #0:0[0x1bf]: Data: dvd_nav_packet
  
      Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  
      Stream #0:3[0x20]: Subtitle: dvd_subtitle
  
      Stream #0:4[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 224 kb/s
  
  Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
  
  Error selecting an encoder for stream 0:2

  How exactly can I output a log file that simply state the files that weren’t converted and the error that entails. Example :

  000002.mpg - Not converted
  
  Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
  
  Error selecting an encoder for stream 0:2
  
  
  
  000123.mpg - Not converted
  
  Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
  
  Error selecting an encoder for stream 0:2

  This way, I won’t have to toy with a huge log file. Thanks !