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• FFMPEG Video Cropping slower [duplicate]

  23 juin 2016, par syed imty

  This question already has an answer here :

  • Fast Video Compression on Android
    
    2 answers
    

  I am trying to crop rectangular video into a square one using FFMPEG. The video conversion take too much time.

  For a video of 30 secs, it takes around 60-70secs to convert

  FFMPEG Command

  String commandStr =" -i "+videoPath+"  -vcodec libx264 -b:v 880k -vf crop=" + videoSize.height + ":"+ videoSize.height + ":" + cropStart +":0 -preset ultrafast -strict -2 " +compressedVideoPath;

  Progress Log

  D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN
  
  I/System.out: Video converison : /storage/emulated/0/IHH_y/147.mp4 /storage/emulated/0/IHH_y/147upload.mp4  wxh1080:1080:420
  
  I/System.out: FFMpeg lib onStart
  
  D/FFmpeg: Running publishing updates method
  
  I/System.out: FFMpeg lib onProgressWARNING: linker: /data/data/com.x.y/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
  I/System.out: FFMpeg lib onProgressffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  I/System.out: FFMpeg lib onProgress  built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
  I/System.out: FFMpeg lib onProgress  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  I/System.out: FFMpeg lib onProgress  libavutil      54.  7.100 / 54.  7.100
  
  I/System.out: FFMpeg lib onProgress  libavcodec     56.  1.100 / 56.  1.100
  
  I/System.out: FFMpeg lib onProgress  libavformat    56.  4.101 / 56.  4.101
  
  I/System.out: FFMpeg lib onProgress  libavdevice    56.  0.100 / 56.  0.100
  
  I/System.out: FFMpeg lib onProgress  libavfilter     5.  1.100 /  5.  1.100
  
  I/System.out: FFMpeg lib onProgress  libswscale      3.  0.100 /  3.  0.100
  
  I/System.out: FFMpeg lib onProgress  libswresample   1.  1.100 /  1.  1.100
  
  I/System.out: FFMpeg lib onProgress  libpostproc    53.  0.100 / 53.  0.100
  
  I/System.out: FFMpeg lib onProgressInput #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/IHH_y/147.mp4':
  
  I/System.out: FFMpeg lib onProgress  Metadata:
  
  I/System.out: FFMpeg lib onProgress    major_brand     : mp42
  
  I/System.out: FFMpeg lib onProgress    minor_version   : 0
  
  I/System.out: FFMpeg lib onProgress    compatible_brands: isommp42
  
  I/System.out: FFMpeg lib onProgress    creation_time   : 2016-06-23 20:00:50
  
  I/System.out: FFMpeg lib onProgress  Duration: 00:00:08.92, start: 0.000000, bitrate: 8966 kb/s
  
  I/System.out: FFMpeg lib onProgress    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 8983 kb/s, 16.66 fps, 16.67 tbr, 90k tbn, 180k tbc (default)
  
  I/System.out: FFMpeg lib onProgress    Metadata:
  
  I/System.out: FFMpeg lib onProgress      rotate          : 90
  
  I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
  
  I/System.out: FFMpeg lib onProgress      handler_name    : VideoHandle
  
  I/System.out: FFMpeg lib onProgress    Side data:
  
  I/System.out: FFMpeg lib onProgress      displaymatrix: rotation of -90.00 degrees
  
  I/System.out: FFMpeg lib onProgress    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 254 kb/s (default)
  
  I/System.out: FFMpeg lib onProgress    Metadata:
  
  I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
  
  I/System.out: FFMpeg lib onProgress      handler_name    : SoundHandle
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] using cpu capabilities: none!
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] profile Constrained Baseline, level 3.2
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=16 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  I/System.out: FFMpeg lib onProgressOutput #0, mp4, to '/storage/emulated/0/IHH_y/147upload.mp4':
  
  I/System.out: FFMpeg lib onProgress  Metadata:
  
  I/System.out: FFMpeg lib onProgress    major_brand     : mp42
  
  I/System.out: FFMpeg lib onProgress    minor_version   : 0
  
  I/System.out: FFMpeg lib onProgress    compatible_brands: isommp42
  
  I/System.out: FFMpeg lib onProgress    encoder         : Lavf56.4.101
  
  I/System.out: FFMpeg lib onProgress    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080, q=-1--1, 880 kb/s, 16.67 fps, 12800 tbn, 16.67 tbc (default)
  
  I/System.out: FFMpeg lib onProgress    Metadata:
  
  I/System.out: FFMpeg lib onProgress      rotate          : 90
  
  I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
  
  I/System.out: FFMpeg lib onProgress      handler_name    : VideoHandle
  
  I/System.out: FFMpeg lib onProgress      encoder         : Lavc56.1.100 libx264
  
  I/System.out: FFMpeg lib onProgress    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
  I/System.out: FFMpeg lib onProgress    Metadata:
  
  I/System.out: FFMpeg lib onProgress      creation_time   : 2016-06-23 20:00:50
  
  I/System.out: FFMpeg lib onProgress      handler_name    : SoundHandle
  
  I/System.out: FFMpeg lib onProgress      encoder         : Lavc56.1.100 aac
  
  I/System.out: FFMpeg lib onProgressStream mapping:
  
  I/System.out: FFMpeg lib onProgress  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  I/System.out: FFMpeg lib onProgress  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  I/System.out: FFMpeg lib onProgressPress [q] to stop, [?] for help
  
  I/System.out: FFMpeg lib onProgressframe=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.96 bitrate=   0.4kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=    7 fps=6.8 q=0.0 size=       0kB time=00:00:01.05 bitrate=   0.4kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   15 fps=9.7 q=35.0 size=      87kB time=00:00:01.07 bitrate= 660.5kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   15 fps=7.3 q=35.0 size=      87kB time=00:00:01.88 bitrate= 376.7kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   25 fps=9.6 q=35.0 size=     154kB time=00:00:02.05 bitrate= 613.4kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   32 fps= 10 q=35.0 size=     199kB time=00:00:02.07 bitrate= 784.7kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   32 fps=8.8 q=35.0 size=     199kB time=00:00:02.93 bitrate= 556.4kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   42 fps= 10 q=35.0 size=     263kB time=00:00:03.06 bitrate= 705.2kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   49 fps= 10 q=36.0 size=     328kB time=00:00:03.08 bitrate= 870.9kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   50 fps=9.5 q=36.0 size=     341kB time=00:00:04.06 bitrate= 687.2kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   59 fps= 10 q=36.0 size=     407kB time=00:00:04.06 bitrate= 821.2kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   66 fps= 10 q=36.0 size=     462kB time=00:00:04.10 bitrate= 922.7kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   66 fps=9.7 q=36.0 size=     462kB time=00:00:05.00 bitrate= 757.4kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   77 fps= 10 q=35.0 size=     534kB time=00:00:05.06 bitrate= 864.0kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   83 fps= 11 q=34.0 size=     566kB time=00:00:05.44 bitrate= 850.2kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   89 fps= 11 q=34.0 size=     600kB time=00:00:06.06 bitrate= 810.6kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=   95 fps= 11 q=35.0 size=     636kB time=00:00:06.06 bitrate= 859.0kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  100 fps= 11 q=34.0 size=     676kB time=00:00:06.28 bitrate= 881.8kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  104 fps= 11 q=33.0 size=     702kB time=00:00:07.07 bitrate= 812.8kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  114 fps= 11 q=34.0 size=     765kB time=00:00:07.07 bitrate= 885.7kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  117 fps= 11 q=33.0 size=     787kB time=00:00:07.26 bitrate= 887.7kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  117 fps= 10 q=33.0 size=     787kB time=00:00:08.03 bitrate= 802.8kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  129 fps= 11 q=33.0 size=     857kB time=00:00:08.07 bitrate= 869.1kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  138 fps= 11 q=34.0 size=     922kB time=00:00:08.07 bitrate= 935.1kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  140 fps= 11 q=33.0 size=     937kB time=00:00:08.58 bitrate= 894.1kbits/s    
  
  I/System.out: FFMpeg lib onProgressframe=  144 fps= 11 q=-1.0 Lsize=    1032kB time=00:00:08.96 bitrate= 943.0kbits/s    
  
  I/System.out: FFMpeg lib onProgressvideo:889kB audio:138kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.512610%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] frame I:1     Avg QP:33.00  size: 21090
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] frame P:143   Avg QP:34.49  size:  6217
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] mb I  I16..4: 100.0%  0.0%  0.0%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] mb P  I16..4: 10.3%  0.0%  0.0%  P16..4: 21.2%  0.0%  0.0%  0.0%  0.0%    skip:68.5%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] final ratefactor: 34.56
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] coded y,uvDC,uvAC intra: 16.9% 5.8% 0.1% inter: 6.2% 0.9% 0.0%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] i16 v,h,dc,p: 55% 30%  8%  7%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] i8c dc,h,v,p: 55% 18% 24%  3%
  
  I/System.out: FFMpeg lib onProgress[libx264 @ 0xb5e08800] kb/s:842.72
  
  I/System.out: FFMpeg lib onSuccessWARNING: linker: /data/data/com.x.y/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
  I/System.out: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  I/System.out:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
  I/System.out:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  I/System.out:   libavutil      54.  7.100 / 54.  7.100
  
  I/System.out:   libavcodec     56.  1.100 / 56.  1.100
  
  I/System.out:   libavformat    56.  4.101 / 56.  4.101
  
  I/System.out:   libavdevice    56.  0.100 / 56.  0.100
  
  I/System.out:   libavfilter     5.  1.100 /  5.  1.100
  
  I/System.out:   libswscale      3.  0.100 /  3.  0.100
  
  I/System.out:   libswresample   1.  1.100 /  1.  1.100
  
  I/System.out:   libpostproc    53.  0.100 / 53.  0.100
  
  I/System.out: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/IHH_y/147.mp4':
  
  I/System.out:   Metadata:
  
  I/System.out:     major_brand     : mp42
  
  I/System.out:     minor_version   : 0
  
  I/System.out:     compatible_brands: isommp42
  
  I/System.out:     creation_time   : 2016-06-23 20:00:50
  
  I/System.out:   Duration: 00:00:08.92, start: 0.000000, bitrate: 8966 kb/s
  
  I/System.out:     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 8983 kb/s, 16.66 fps, 16.67 tbr, 90k tbn, 180k tbc (default)
  
  I/System.out:     Metadata:
  
  I/System.out:       rotate          : 90
  
  I/System.out:       creation_time   : 2016-06-23 20:00:50
  
  I/System.out:       handler_name    : VideoHandle
  
  I/System.out:     Side data:
  
  I/System.out:       displaymatrix: rotation of -90.00 degrees
  
  I/System.out:     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 254 kb/s (default)
  
  I/System.out:     Metadata:
  
  I/System.out:       creation_time   : 2016-06-23 20:00:50
  
  I/System.out:       handler_name    : SoundHandle
  
  I/System.out: [libx264 @ 0xb5e08800] using cpu capabilities: none!
  
  I/System.out: [libx264 @ 0xb5e08800] profile Constrained Baseline, level 3.2
  
  I/System.out: [libx264 @ 0xb5e08800] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=16 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=880 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
  I/System.out: Output #0, mp4, to '/storage/emulated/0/IHH_y/147upload.mp4':
  
  I/System.out:   Metadata:
  
  I/System.out:     major_brand     : mp42
  
  I/System.out:     minor_version   : 0
  
  I/System.out:     compatible_brands: isommp42
  
  I/System.out:     encoder         : Lavf56.4.101
  
  I/System.out:     Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080, q=-1--1, 880 kb/s, 16.67 fps, 12800 tbn, 16.67 tbc (default)
  
  I/System.out:     Metadata:
  
  I/System.out:       rotate          : 90
  
  I/System.out:       creation_time   : 2016-06-23 20:00:50
  
  I/System.out:       handler_name    : VideoHandle
  
  I/System.out:       encoder         : Lavc56.1.100 libx264
  
  I/System.out:     Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
  I/System.out:     Metadata:
  
  I/System.out:       creation_time   : 2016-06-23 20:00:50
  
  I/System.out:       handler_name    : SoundHandle
  
  I/System.out:       encoder         : Lavc56.1.100 aac
  
  I/System.out: Stream mapping:
  
  I/System.out:   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  I/System.out:   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  I/System.out: Press [q] to stop, [?] for help
  
  I/System.out: frame=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.96 bitrate=   0.4kbits/s    
  
  I/System.out: frame=    7 fps=6.8 q=0.0 size=       0kB time=00:00:01.05 bitrate=   0.4kbits/s    
  
  I/System.out: frame=   15 fps=9.7 q=35.0 size=      87kB time=00:00:01.07 bitrate= 660.5kbits/s    
  
  I/System.out: frame=   15 fps=7.3 q=35.0 size=      87kB time=00:00:01.88 bitrate= 376.7kbits/s    
  
  I/System.out: frame=   25 fps=9.6 q=35.0 size=     154kB time=00:00:02.05 bitrate= 613.4kbits/s    
  
  I/System.out: frame=   32 fps= 10 q=35.0 size=     199kB time=00:00:02.07 bitrate= 784.7kbits/s    
  
  I/System.out: frame=   32 fps=8.8 q=35.0 size=     199kB time=00:00:02.93 bitrate= 556.4kbits/s    
  
  I/System.out: frame=   42 fps= 10 q=35.0 size=     263kB time=00:00:03.06 bitrate= 705.2kbits/s    
  
  I/System.out: frame=   49 fps= 10 q=36.0 size=     328kB time=00:00:03.08 bitrate= 870.9kbits/s    
  
  I/System.out: frame=   50 fps=9.5 q=36.0 size=     341kB time=00:00:04.06 bitrate= 687.2kbits/s    
  
  I/System.out: frame=   59 fps= 10 q=36.0 size=     407kB time=00:00:04.06 bitrate= 821.2kbits/s    
  
  I/System.out: frame=   66 fps= 10 q=36.0 size=     462kB time=00:00:04.10 bitrate= 922.7kbits/s    
  
  I/System.out: frame=   66 fps=9.7 q=36.0 size=     462kB time=00:00:05.00 bitrate= 757.4kbits/s    
  
  I/System.out: frame=   77 fps= 10 q=35.0 size=     534kB time=00:00:05.06 bitrate= 864.0kbits/s    
  
  I/System.out: frame=   83 fps= 11 q=34.0 size=     566kB time=00:00:05.44 bitrate= 850.2kbits/s    
  
  I/System.out: frame=   89 fps= 11 q=34.0 size=     600kB time=00:00:06.06 bitrate= 810.6kbits/s    
  
  I/System.out: frame=   95 fps= 11 q=35.0 size=     636kB time=00:00:06.06 bitrate= 859.0kbits/s    
  
  I/System.out: frame=  100 fps= 11 q=34.0 size=     676kB time=00:00:06.28 bitrate= 881.8kbits/s    
  
  I/System.out: frame=  104 fps= 11 q=33.0 size=     702kB time=00:00:07.07 bitrate= 812.8kbits/s    
  
  I/System.out: frame=  114 fps= 11 q=34.0 size=     765kB time=00:00:07.07 bitrate= 885.7kbits/s    
  
  I/System.out: frame=  117 fps= 11 q=33.0 size=     787kB time=00:00:07.26 bitrate= 887.7kbits/s    
  
  I/System.out: frame=  117 fps= 10 q=33.0 size=     787kB time=00:00:08.03 bitrate= 802.8kbits/s    
  
  I/System.out: frame=  129 fps= 11 q=33.0 size=     857kB time=00:00:08.07 bitrate= 869.1kbits/s    
  
  I/System.out: frame=  138 fps= 11 q=34.0 size=     922kB time=00:00:08.07 bitrate= 935.1kbits/s    
  
  I/System.out: frame=  140 fps= 11 q=33.0 size=     937kB time=00:00:08.58 bitrate= 894.1kbits/s    
  
  I/System.out: frame=  144 fps= 11 q=-1.0 Lsize=    1032kB time=00:00:08.96 bitrate= 943.0kbits/s    
  
  I/System.out: video:889kB audio:138kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.512610%
  
  I/System.out: [libx264 @ 0xb5e08800] frame I:1     Avg QP:33.00  size: 21090
  
  I/System.out: [libx264 @ 0xb5e08800] frame P:143   Avg QP:34.49  size:  6217
  
  I/System.out: [libx264 @ 0xb5e08800] mb I  I16..4: 100.0%  0.0%  0.0%
  
  I/System.out: [libx264 @ 0xb5e08800] mb P  I16..4: 10.3%  0.0%  0.0%  P16..4: 21.2%  0.0%  0.0%  0.0%  0.0%    skip:68.5%
  
  I/System.out: [libx264 @ 0xb5e08800] final ratefactor: 34.56
  
  I/System.out: [libx264 @ 0xb5e08800] coded y,uvDC,uvAC intra: 16.9% 5.8% 0.1% inter: 6.2% 0.9% 0.0%
  
  I/System.out: [libx264 @ 0xb5e08800] i16 v,h,dc,p: 55% 30%  8%  7%

  As you can see from the log, the conversion fps is very low
  Need help to make it faster.

  Note : The source file is MP4 and output file is MP4 as well

• ffmpeg commands to concatenate different type and resolution videos into 1 video and can be played in android

  26 octobre 2015, par Aalap

  I want to concatinate 4 different videos of 4 different resolution and type into 1 video which can be played in android. I am using ffmpeg ported on android using https://github.com/guardianproject/android-ffmpeg

  So I have these 4 different types of videos
  1)

  ./ffmpeg -i 1.mp4 
  
  Video: h264 (High), yuv420p, 1920x1080, 16959 kb/s, 29.85 fps, 90k tbr, 90k tbn, 180k tbc
  
  Audio: aac, 48000 Hz, stereo, s16, 106 kb/s

  2)

  ffmpeg -i 2.mp4
  
  Video: h264 (Constrained Baseline), yuv420p, 640x480, 3102 kb/s, 29.99 fps, 90k tbr, 90k tbn, 180k tbc
  
  Audio: aac, 48000 Hz, stereo, s16, 93 kb/s

  3)

  ffmpeg -i 3.3gp
  
  Video: h263, yuv420p, 1408x1152 [PAR 12:11 DAR 4:3], 2920 kb/s, 15 fps, 15 tbr, 15360 tbn, 29.97 tbc
  
  Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s

  4)

  ffmpeg -i 4.3gp
  
  Video: h264 (High), yuv420p, 352x288 [PAR 12:11 DAR 4:3], 216 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc

  Audio : aac, 44100 Hz, stereo, s16, 92 kb/s

  So I am converting them to mpegts using following commands

  ./ffmpeg -i 1.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 1.ts
  
  ./ffmpeg -i 2.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 2.ts
  
  ./ffmpeg -i 3.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 3.ts
  
  ./ffmpeg -i 4.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 4.ts

  then concatenating the .ts files into f.ts and then creating a final .mp4 file from it using

  cat 1.ts 2.ts 3.ts 4.ts > f.ts
  
  ./ffmpeg -i f.ts -c copy -bsf:a aac_adtstoasc output.mp4

  But my f.ts also doesnt seem to play correctly in VLC on linux, it plays first 2 mp4’s video + audio and it plays last .3gp’s audio only.(Same for output.mp4 too) Could you please help me in figuring out what am I missing ?

  Thanks in advance

• Hacking the Popcorn Hour C-200

  3 mai 2010, par Mans — Hardware, MIPS

  Update : A new firmware version has been released since the publication of this article. I do not know if the procedure described below will work with the new version.

  The Popcorn Hour C-200 is a Linux-based media player with impressive specifications. At its heart is a Sigma Designs SMP8643 system on chip with a 667MHz MIPS 74Kf as main CPU, several co-processors, and 512MB of DRAM attached. Gigabit Ethernet, SATA, and USB provide connectivity with the world around it. With a modest $299 on the price tag, the temptation to repurpose the unit as a low-power server or cheap development board is hard to resist. This article shows how such a conversion can be achieved.
  

  Kernel

  The PCH runs a patched Linux 2.6.22.19 kernel. A source tarball is available from the manufacturer. This contains the sources with Sigma support patches, Con Kolivas’ patch set (scheduler tweaks), and assorted unrelated changes. Properly split patches are unfortunately not available. I have created a reduced patch against vanilla 2.6.22.19 with only Sigma-specific changes, available here.

  The installed kernel has a number of features disabled, notably PTY support and oprofile. We will use kexec to load a more friendly one.

  As might be expected, the PCH kernel does not have kexec support enabled. It does however, by virtue of using closed-source components, support module loading. This lets us turn kexec into a module and load it. A patch for this is available here. To build the module, apply the patch to the PCH sources and build using this configuration. This will produce two modules, kexec.ko and mips_kexec.ko. No other products of this build will be needed.

  The replacement kernel can be built from the PCH sources or, if one prefers, from vanilla 2.6.22.19 with the Sigma-only patch. For the latter case, this config provides a minimal starting point suitable for NFS-root.

  When configuring the kernel, make sure CONFIG_TANGOX_IGNORE_CMDLINE is enabled. Otherwise the command line will be overridden by a useless one stored in flash. A good command line can be set with CONFIG_CMDLINE (under “Kernel hacking” in menuconfig) or passed from kexec.

  Taking control

  In order to load our kexec module, we must first gain root privileges on the PCH, and here a few features of the system are working to our advantage :

  1. The PCH allows mounting any NFS export to access media files stored there.
  2. There is an HTTP server running. As root.
  3. This HTTP server can be readily instructed to fetch files from an NFS mount.
  4. Files with a name ending in .cgi are executed. As root.

  All we need do to profit from this is place the kexec modules, the kexec userspace tools, and a simple script on an NFS export. Once this is done, and the mount point configured on the PCH, a simple HTTP request will send the old kernel screaming to /dev/null, our shiny new kernel taking its place.

  The rootfs

  A kernel is mostly useless without a root filesystem containing tools and applications. A number of tools for cross-compiling a full system exist, each with its strengths and weaknesses. The only thing to look out for is the version of kernel headers used (usually a linux-headers package). As we will be running an old kernel, chances are the default version is too recent. Other than this, everything should be by the book.

  Assembling the parts

  Having gathered all the pieces, it is now time to assemble the hack. The following steps are suitable for an NFS-root system. Adaptation to a disk-based system is left as an exercise.

  1. Build a rootfs for MIPS 74Kf little endian. Make sure kernel headers used are no more recent than 2.6.22.x. Include a recent version of the kexec userspace tools.
  2. Fetch and unpack the PCH kernel sources.
  3. Apply the modular kexec patch.
  4. Using this config, build the modules and install them as usual to the rootfs. The version string must be 2.6.22.19-19-4.
  5. From either the same kernel sources or plain 2.6.22.19 with Sigma patches, build a vmlinux and (optionally) modules using this config. Modify the compiled-in command line to point to the correct rootfs. Set the version string to something other than in the previous step.
  6. Copy vmlinux to any directory in the rootfs.
  7. Copy kexec.sh and kexec.cgi to the same directory as vmlinux.
  8. Export the rootfs over NFS with full read/write permissions for the PCH.
  9. Power on the PCH, and update to latest firmware.
  10. Configure an NFS mount of the rootfs.
  11. Navigate to the rootfs in the PCH UI. A directory listing of bin, dev, etc. should be displayed.
  12. On the host system, run the kexec.sh script with the target hostname or IP address as argument.
  13. If all goes well, the new kernel will boot and mount the rootfs.

  Serial console

  A serial console is indispensable for solving boot problems. The PCH board has two UART connectors. We will use the one labeled UART0. The pinout is as follows (not standard PC pinout).

          +-----------+
         2| * * * * * |10
         1| * * * * * |9
          -----------+
            J7 UART0
      /---------------------/ board edge
  

  Pin	Function
  1	+5V
  5	Rx
  6	Tx
  10	GND

  The signals are 3.3V so a converter, e.g. MAX202, is required for connecting this to a PC serial port. The default port settings are 115200 bps 8n1.