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  • Android ffmpeg very slow to transcode

    23 mars 2016, par Nat

    In Android phones (different phone models) it takes ffmpeg 5x the length of the video to transcode. A 1-minute video takes near 5 minutes to transcode. I have tried the following to improve performance and nothing has helped,

    -b:v 16K to 1024K
    
-s 180x120 to 1920x1080
    
-preset ultrafast
    
-profile:v baseline
    
-r 24 to 100
    
maxrate 64K to 512K
    
rate 64K to 512K
    
-threads 0 to 16

    Nothing seems to help. Of course, some of them bring the speed up to 3x from 5x.

    Please help as I have run out of options.

    My current code is,

    ffmpeg -y -i /storage/emulated/0/DCIM/Camera/VID_20150819_220414.mp4 -strict experimental -s 480x270 -vcodec libx264 -r 24 -c:a copy /storage/emulated/0/Android/data/<myapp>/cache/VID_-K-qMCldTSzZomKakNzq.mp4 
    
</myapp>

    Console log -----

    configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib
    
libavutil      51. 54.100 / 51. 54.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libavcodec     54. 23.100 / 54. 23.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libavformat    54.  6.100 / 54.  6.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libavdevice    54.  0.100 / 54.  0.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libavfilter     2. 77.100 /  2. 77.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libswscale      2.  1.100 /  2.  1.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libswresample   0. 15.100 /  0. 15.100
    
10-05 10:29:22.288: V/VideoEditor(7655): shellOut:   libpostproc    52.  0.100 / 52.  0.100
    
10-05 10:29:22.740: V/VideoEditor(7655): shellOut: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/Camera/VID_20151002_152817.mp4':
    
10-05 10:29:22.740: V/VideoEditor(7655): shellOut:   Metadata:
    
10-05 10:29:22.741: V/VideoEditor(7655): shellOut:     major_brand     : mp42
    
10-05 10:29:22.741: V/VideoEditor(7655): shellOut:     minor_version   : 0
    
10-05 10:29:22.742: V/VideoEditor(7655): shellOut:     compatible_brands: isommp42
    
10-05 10:29:22.742: V/VideoEditor(7655): shellOut:     creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.743: V/VideoEditor(7655): shellOut:   Duration: 00:01:14.13, start: 0.000000, bitrate: 17112 kb/s
    
10-05 10:29:22.745: V/VideoEditor(7655): shellOut:     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 16991 kb/s, SAR 65536:65536 DAR 16:9, 29.84 fps, 29.85 tbr, 90k tbn, 180k tbc
    
10-05 10:29:22.745: V/VideoEditor(7655): shellOut:     Metadata:
    
10-05 10:29:22.747: V/VideoEditor(7655): shellOut:       creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.748: V/VideoEditor(7655): shellOut:       handler_name    : VideoHandle
    
10-05 10:29:22.749: V/VideoEditor(7655): shellOut:     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, s16, 96 kb/s
    
10-05 10:29:22.749: V/VideoEditor(7655): shellOut:     Metadata:
    
10-05 10:29:22.750: V/VideoEditor(7655): shellOut:       creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.751: V/VideoEditor(7655): shellOut:       handler_name    : SoundHandle
    
10-05 10:29:22.760: V/VideoEditor(7655): shellOut: [buffer @ 0xb5caa0a0] w:1920 h:1080 pixfmt:yuv420p tb:1/90000 sar:65536/65536 sws_param:flags=2
    
10-05 10:29:22.760: V/VideoEditor(7655): shellOut: [buffersink @ 0xb5caa0d0] No opaque field provided
    
10-05 10:29:22.802: V/VideoEditor(7655): shellOut: [scale @ 0xb5caa100] w:1920 h:1080 fmt:yuv420p sar:65536/65536 -> w:720 h:404 fmt:yuv420p sar:404/405 flags:0x4
    
10-05 10:29:22.803: V/VideoEditor(7655): shellOut: [libx264 @ 0xb5c28000] using SAR=1/1
    
10-05 10:29:22.818: V/VideoEditor(7655): shellOut: [libx264 @ 0xb5c28000] using cpu capabilities: ARMv6 NEON
    
10-05 10:29:22.904: V/VideoEditor(7655): shellOut: [libx264 @ 0xb5c28000] profile High, level 3.0
    
shellOut: [libx264 @ 0xb5c28000] 264 - core 125 r680+1521 37be552 - 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=1 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=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
10-05 10:29:22.909: V/VideoEditor(7655): shellOut: Output #0, mp4, to '/storage/emulated/0/Android/data/com.myapp/cache/VID_-K-t2E4MtV_RTw4a1JXb.mp4':
    
10-05 10:29:22.910: V/VideoEditor(7655): shellOut:   Metadata:
    
10-05 10:29:22.911: V/VideoEditor(7655): shellOut:     major_brand     : mp42
    
10-05 10:29:22.912: V/VideoEditor(7655): shellOut:     minor_version   : 0
    
10-05 10:29:22.913: V/VideoEditor(7655): shellOut:     compatible_brands: isommp42
    
10-05 10:29:22.913: V/VideoEditor(7655): shellOut:     creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.914: V/VideoEditor(7655): shellOut:     encoder         : Lavf54.6.100
    
10-05 10:29:22.916: V/VideoEditor(7655): shellOut:     Stream #0:0(eng): Video: h264 (![0][0][0] / 0x0021), yuv420p, 720x404 [SAR 1:1 DAR 180:101], q=-1--1, 512 kb/s, 24 tbn, 24 tbc
    
10-05 10:29:22.916: V/VideoEditor(7655): shellOut:     Metadata:
    
10-05 10:29:22.917: V/VideoEditor(7655): shellOut:       creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.918: V/VideoEditor(7655): shellOut:       handler_name    : VideoHandle
    
10-05 10:29:22.919: V/VideoEditor(7655): shellOut:     Stream #0:1(eng): Audio: aac (@[0][0][0] / 0x0040), 48000 Hz, mono, 96 kb/s
    
10-05 10:29:22.920: V/VideoEditor(7655): shellOut:     Metadata:
    
10-05 10:29:22.921: V/VideoEditor(7655): shellOut:       creation_time   : 2015-10-02 22:29:32
    
10-05 10:29:22.922: V/VideoEditor(7655): shellOut:       handler_name    : SoundHandle
    
10-05 10:29:22.922: V/VideoEditor(7655): shellOut: Stream mapping:
    
10-05 10:29:22.923: V/VideoEditor(7655): shellOut:   Stream #0:0 -> #0:0 (h264 -> libx264)
    
10-05 10:29:22.924: V/VideoEditor(7655): shellOut:   Stream #0:1 -> #0:1 (copy)
    
10-05 10:29:22.924: V/VideoEditor(7655): shellOut: Press [q] to stop, [?] for help
    
10-05 10:29:23.637: V/VideoEditor(7655): shellOut: frame=    6 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
10-05 10:29:24.205: V/VideoEditor(7655): shellOut: frame=   12 fps= 10 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s    
    
10-05 10:29:24.735: I/chromium(7655): [INFO:CONSOLE(25)] "No Content-Security-Policy meta tag found. Please add one when using the cordova-plugin-whitelist plugin.", source: file:///android_asset/www/plugins/cordova-plugin-whitelist/whitelist.js (25)
    
10-05 10:29:24.756: V/VideoEditor(7655): shellOut: frame=   17 fps=9.8 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s dup=0 drop=1    
    
10-05 10:29:25.327: V/VideoEditor(7655): shellOut: frame=   22 fps=9.5 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s dup=0 drop=2    
    
10-05 10:29:25.904: V/VideoEditor(7655): shellOut: frame=   26 fps=9.1 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s dup=0 drop=4    

  • Android FFMPEG doesn't continue, throws no error

    8 octobre 2015, par Thommy

    I try to scale a video via FFMPEG in Android, but everytime I execute the command, it just stops producing console output.
    No Exception is thrown.
    The output looks like this. It just stops afterwards, the App is still running.

    /.../ffmpeg -i /.../VIDEO1.mp4 -filter:v scale=720:-1 -c:a copy /sdcard/test.mp4
    
WARNING: linker: .../ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
built on Oct  8 2015 14:29:21 with gcc 4.6 20120106 (prerelease)
    
configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/thomas/Downloads/android-ndk-r10d/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/thomas/Downloads/android-ndk-r10d/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --enable-muxer=md5
    
   libavutil      51. 54.100 / 51. 54.100
    
   libavcodec     54. 23.100 / 54. 23.100
    
   libavformat    54.  6.100 / 54.  6.100
    
   libavdevice    54.  0.100 / 54.  0.100
    
   libavfilter     2. 77.100 /  2. 77.100
    
   libswscale      2.  1.100 /  2.  1.100
    
   libswresample   0. 15.100 /  0. 15.100
    
   libpostproc    52.  0.100 / 52.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.../VIDEO1.mp4':
    
   Metadata:
    
     major_brand     : mp42
    
     minor_version   : 0
    
     compatible_brands: isommp42
    
     creation_time   : 2015-10-08 08:46:47
    
   Duration: 00:00:15.98, start: 0.000000, bitrate: 17182 kb/s
    
     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 16923 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc
    
     Metadata:
    
       creation_time   : 2015-10-08 08:46:47
    
       handler_name    : VideoHandle
    
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 252 kb/s
    
     Metadata:
    
       creation_time   : 2015-10-08 08:46:47
    
       handler_name    : SoundHandle

    Note : I ... out some paths to keep it easy to read

  • Not converting flv file to mp4 file using ffmpeg

    4 octobre 2015, par Sandeep Nambiar

    I installled ffmpeg for my centos server.then i converted my flv files to mp4 by using ffmpeg.But its creating 0 byte error mp4 file.
    Conversion code

    shell_exec('/usr/local/bin/ffmpeg -i ffmpeg/test1.flv-c copy -copyts ffmpeg/test.mp4');

    ffmpeg version is

    ffmpeg version N-75682-g5fa5e73 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
    
  configuration:
    
  libavutil      55.  2.100 / 55.  2.100
    
  libavcodec     57.  3.100 / 57.  3.100
    
  libavformat    57.  2.102 / 57.  2.102
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6.  9.101 /  6.  9.101
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfi     
    
le}...

    After run this i am getting the below output

    ffmpeg version N-75682-g5fa5e73 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
    
  configuration:
    
  libavutil      55.  2.100 / 55.  2.100
    
  libavcodec     57.  3.100 / 57.  3.100
    
  libavformat    57.  2.102 / 57.  2.102
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6.  9.101 /  6.  9.101
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
Input #0, flv, from 'ffmpeg/test1.flv':
    
  Metadata:
    
    starttime       : 0
    
    totalduration   : 67
    
    totaldatarate   : 354
    
    bytelength      : 2954448
    
    canseekontime   : true
    
    sourcedata      : BD075F34AHM1443878448533564
    
    purl            :
    
    pmsg            :
    
    httphostheader  : r7---sn-xupn5a5u-4wge7.googlevideo.com
    
  Duration: 00:01:06.63, start: 0.000000, bitrate: 354 kb/s
    
    Stream #0:0: Video: flv1, yuv420p, 426x240, 288 kb/s, 30 fps, 30 tbr, 1k tbn                                                                                                                                                             , 1k tbc
    
    Stream #0:1: Audio: mp3, 22050 Hz, mono, s16p, 65 kb/s
    
[aac @ 0x2b4b640] The encoder 'aac' is experimental but experimental codecs are                                                                                                                                                              not enabled, add '-strict -2' if you want to use it.

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