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• Time FFMPEG takes to encode a video file

  1er avril 2020, par amateur

  I have recently been working with FFMPEG to do some manipulation on video files, becoming aware of the syntax etc and have found it very helpful. I am looking for some feedback though on the speed it takes to encode file. For example, I run the following command against a video file, 1 hour in length, file extension .mov and 4GB in size, and the command takes just over 4 hours to run. It produces a file 2.2GB in size. I am running it on a high spec i7 laptop.

  



      ffmpeg -i "C:\MyInputFile.mov" -b:v 4500k -bufsize 4500k -r 50 -bsf:a aac_adtstoasc -vf scale=1920:1080 "C:\MyOutputFile.mp4"

Please see following the log created at the start of the encoding. I dont have the full log unless I let it run again for 4 hours!

    -i "C:\MyInputFile.mov" -b:v 4500k -bufsize 4500k -r 50 -bsf:a aac_adtstoasc -vf scale=1920:1080 "C:\MyOutputFile.mp4"
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\MyInputFile.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2019-06-24T18:14:35.000000Z
    timecode        : 10:00:00:00
  Duration: 01:09:20.12, start: 0.000000, bitrate: 8092 kb/s
    Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / 0x7634706D), yuv420p(pc, smpte170m/unknown/smpte170m), 1024x576 [SAR 1:1 DAR 16:9], 6553 kb/s, 25 fps, 25 tbr, 25k tbn, 1k tbc (default)
    Metadata:
      creation_time   : 2019-06-24T18:14:35.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : MPEG-4 Video
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2019-06-24T18:14:36.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
    Metadata:
      creation_time   : 2019-06-24T19:32:28.000000Z
      handler_name    : Time Code Media Handler
      timecode        : 10:00:00:00
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 000001d8655322c0] VBV maxrate unspecified, assuming CBR
[libx264 @ 000001d8655322c0] using SAR=1/1
[libx264 @ 000001d8655322c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000001d8655322c0] profile High, level 4.2, 4:2:0, 8-bit
[libx264 @ 000001d8655322c0] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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=cbr mbtree=1 bitrate=4500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=4500 vbv_bufsize=4500 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to ' C:\MyOutputFile.mp4':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    timecode        : 10:00:00:00
    encoder         : Lavf58.29.100
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 4500 kb/s, 0.02 fps, 12800 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2019-06-24T18:14:35.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/4500000 buffer size: 4500000 vbv_delay: -1
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2019-06-24T18:14:36.000000Z
      handler_name    : Apple Sound Media Handler
      encoder         : Lavc58.54.100 aac
frame=  273 fps= 21 q=31.0 size=    2048kB time=00:00:05.44 bitrate=3084.1kbits/s dup=136 drop=0 speed=0.415x


  



  Is there any modification I can make to the command to encode it in less time ?

  


• Video cropping with FFMpeg on Android is very slow [duplicate]

  7 avril 2017, par Rami Jemli

  This question already has an answer here :

  • Fast Video Compression on Android
    
    2 answers
    

  What i tried :

  I am trying to implement video cropping on android using FFMpeg (ffmpeg-android).
  

  Here is the command I use :
  

  String[] complexCommand = {"-i", inputPath, "-strict", "experimental", "-vf", "crop=1080:1080:0:0", "-threads", "5", "-c:v", "libx264", "-preset", "ultrafast", filePath};

  The problem :

  Video cropping is working, but even though I am using all needed options to make the operation fast, it still takes a 1min long video the same duration to crop.
  

  How can I achieve better speeds ?
  Will I need to implement video cropping on server instead of device ?
  Is there another way to implement video cropping on Android instead of FFMpeg ?

  I understand that I can achieve better UX by letting the user edit a cropped TextureView/SurfaceView while doing the actual cropping in background, but I want to avoid this way as it takes more time.

  UPDATE

  Here is FFMpeg’s log output :

  SUCCESS with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
      built with gcc 4.8 (GCC)
  
      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=
  
      libavutil      55. 17.103 / 55. 17.103
  
      libavcodec     57. 24.102 / 57. 24.102
  
      libavformat    57. 25.100 / 57. 25.100
  
      libavdevice    57.  0.101 / 57.  0.101
  
      libavfilter     6. 31.100 /  6. 31.100
  
      libswscale      4.  0.100 /  4.  0.100
  
      libswresample   2.  0.101 /  2.  0.101
  
      libpostproc    54.  0.100 / 54.  0.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/100ANDRO/MOV_0066.mp4':
  
      Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2017-04-02 11:58:58
  
      com.android.version: 6.0.1
  
      Duration: 00:00:59.60, start: 0.000000, bitrate: 17759 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17498 kb/s, SAR 1:1 DAR 16:9, 29.90 fps, 29.92 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
      rotate          : 90
  
      creation_time   : 2017-04-02 11:58:58
  
      handler_name    : VideoHandle
  
      Side data:
  
      displaymatrix: rotation of -90.00 degrees
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 155 kb/s (default)
  
      Metadata:
  
      creation_time   : 2017-04-02 11:58:58
  
      handler_name    : SoundHandle
  
      [libx264 @ 0xb5bc4400] using SAR=1/1
  
      [libx264 @ 0xb5bc4400] using cpu capabilities: none!
  
      [libx264 @ 0xb5bc4400] profile High 4:4:4 Predictive, level 3.2, 4:2:0 8-bit
  
      [libx264 @ 0xb5bc4400] 64 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x1 me=dia subme=1 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=5 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
  
      Output #0, mp4, to '/storage/emulated/0/Download/compress_video1.mp4':
  
      Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      com.android.version: 6.0.1
  
      encoder         : Lavf57.25.100
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080 [SAR 1:1 DAR 1:1], q=-1--1, 29.92 fps, 11488 tbn, 29.92 tbc (default)
  
      Metadata:
  
      handler_name    : VideoHandle
  
      creation_time   : 2017-04-02 11:58:58
  
      encoder         : Lavc57.24.102 libx264
  
      Side data:
  
      unknown side data type 10 (24 bytes)
  
      Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
      creation_time   : 2017-04-02 11:58:58
  
      handler_name    : SoundHandle
  
      encoder         : Lavc57.24.102 aac
  
      Stream mapping:
  
      Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
      Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
      Press [q] to stop, [?] for help
  
      frame=    6 fps=0.0 q

  Any help is greatly appreciated !

• FFMPEG:merging Image and Audio duration getting increased [migrated]

  21 juin 2016, par Saikat Dey

  I am trying to create a video using a still image(.png) with audio(.wav) file using FFMPEG with video duration equal to audio duration but even keeping ’-shortest’ & ’-loop 1’ as flag, pegstill video duration is always 2 seconds more than audio duration.

  This is causing problem because, after the video creation i am merging several videos together to create a final video. Now what is happening is that in that 2 seconds extra time, the next video’s audio comes which is causing video-audio unsync. Even if I delay the audio stream, there is a blank sound while transition from one video to another.

  So i wanted to ask why there is extra 2 seconds and how can i remove it.
  My ffmpeg command :

  ffmpeg -loop 1 -i imgPath -i audioPath -c:v libx264 -c:a aac -strict experimental -pix_fmt yuv420p -vf resolution -b:a 192k -shortest videoPath

  Console Output :

  ffmpeg version N-78598-g98a0053 Copyright (c) 2000-2016 the FFmpeg developers
  
  built with gcc 5.3.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
  libavutil      55. 18.100 / 55. 18.100
  
  libavcodec     57. 24.103 / 57. 24.103
  
  libavformat    57. 25.101 / 57. 25.101
  
  libavdevice    57.  0.101 / 57.  0.101
  
  libavfilter     6. 34.100 /  6. 34.100
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, png_pipe, from 'image.png':
  
  Duration: N/A, bitrate: N/A
  
    Stream #0:0: Video: png, rgb24(pc), 1058x794 [SAR 3779:3781 DAR 621141:466396], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Guessed Channel Layout for  Input Stream #1.0 : stereo
  
  Input #1, wav, from 'audio.wav':
  
  Duration: 00:00:15.25, bitrate: 1411 kb/s
  
  Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
  
  [libx264 @ 0068f820] using SAR=2587/2590
  
  [libx264 @ 0068f820] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0068f820] profile High, level 3.1
  
  [libx264 @ 0068f820] 264 - core 148 r2665 a01e339 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'video.mp4':
  
  Metadata:
  
  encoder         : Lavf57.25.101
  
  Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 800x600 [SAR 5997273:6004228 DAR 621141:466396], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
  Metadata:
  
    encoder         : Lavc57.24.103 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), 44100 Hz, stereo, fltp, 192 kb/s
  
  Metadata:
  
    encoder         : Lavc57.24.103 aac
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  frame=   47 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=   66 fps= 66 q=28.0 size=      16kB time=00:00:00.56 bitrate= 234.8kbits/s speed=0.559x    
  
  frame=   91 fps= 60 q=28.0 size=      40kB time=00:00:01.56 bitrate= 211.2kbits/s speed=1.04x    
  
  frame=  123 fps= 61 q=28.0 size=      72kB time=00:00:02.84 bitrate= 206.6kbits/s speed=1.41x    
  
  frame=  160 fps= 64 q=28.0 size=     108kB time=00:00:04.32 bitrate= 203.9kbits/s speed=1.72x    
  
  frame=  197 fps= 65 q=28.0 size=     143kB time=00:00:05.80 bitrate= 201.8kbits/s speed=1.92x    
  
  frame=  231 fps= 66 q=28.0 size=     176kB time=00:00:07.16 bitrate= 201.3kbits/s speed=2.03x    
  
  frame=  270 fps= 67 q=28.0 size=     214kB time=00:00:08.72 bitrate= 200.6kbits/s speed=2.17x    
  
  frame=  307 fps= 68 q=28.0 size=     252kB time=00:00:10.20 bitrate= 202.6kbits/s speed=2.25x    
  
  frame=  343 fps= 68 q=28.0 size=     286kB time=00:00:11.64 bitrate= 201.6kbits/s speed=2.31x    
  
  frame=  380 fps= 69 q=28.0 size=     323kB time=00:00:13.12 bitrate= 201.6kbits/s speed=2.37x    
  
  frame=  416 fps= 69 q=28.0 size=     357kB time=00:00:14.56 bitrate= 200.9kbits/s speed=2.41x    
  
  frame=  433 fps= 68 q=-1.0 Lsize=     391kB time=00:00:17.24 bitrate= 185.6kbits/s speed= 2.7x    
  
  video:18kB audio:358kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.837568%
  
  [libx264 @ 0068f820] frame I:2     Avg QP: 7.83  size:  2710
  
  [libx264 @ 0068f820] frame P:109   Avg QP: 9.51  size:    35
  
  [libx264 @ 0068f820] frame B:322   Avg QP:12.67  size:    27
  
  [libx264 @ 0068f820] consecutive B-frames:  0.7%  0.5%  0.0% 98.8%
  
  [libx264 @ 0068f820] mb I  I16..4: 97.9%  0.1%  2.1%
  
  [libx264 @ 0068f820] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:100.0%
  
  [libx264 @ 0068f820] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:99.9%  L0:65.9% L1:34.1% BI: 0.0%
  
  [libx264 @ 0068f820] 8x8 transform intra:0.1% inter:28.6%
  
  [libx264 @ 0068f820] coded y,uvDC,uvAC intra: 1.6% 2.1% 2.1% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0068f820] i16 v,h,dc,p: 97%  0%  3%  0%
  
  [libx264 @ 0068f820] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 50%  0% 50%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 0068f820] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 18% 19%  3%  6%  4%  6%  2%  5%
  
  [libx264 @ 0068f820] i8c dc,h,v,p: 98%  1%  1%  0%
  
  [libx264 @ 0068f820] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0068f820] ref P L0: 70.5% 11.4%  9.1%  9.1%
  
  [libx264 @ 0068f820] ref B L0: 50.2% 49.8%
  
  [libx264 @ 0068f820] ref B L1: 99.2%  0.8%
  
  [libx264 @ 0068f820] kb/s:8.23
  
  [aac @ 0067e4c0] Qavg: 439.702

  You can see here that my audio.wav Duration : 00:00:15.25, but output video.mp4 is 00:00:17.24.