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• iPhone video conversion to Android supported format using FFMPEG

  21 janvier 2016, par Muhammad Umar

  I have an iPhone video created as follow

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2016-01-20 09:21:08
  
      make            : Apple
  
      make-eng        : Apple
  
      encoder         : 8.2
  
      encoder-eng     : 8.2
  
      date            : 2016-01-20T14:20:57+0500
  
      date-eng        : 2016-01-20T14:20:57+0500
  
      model           : iPhone 5
  
      model-eng       : iPhone 5
  
    Duration: 00:00:10.80, start: 0.000000, bitrate: 765 kb/s
  
      Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default)
  
      Metadata:
  
        creation_time   : 2016-01-20 09:21:08
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x320, 696 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        creation_time   : 2016-01-20 09:21:08
  
        handler_name    : Core Media Data Handler
  
        encoder         : H.264

  I want to convert it into Android support format so that all iPhone and maximum androids can read it.

  However if i convert to mpeg4 format using

  ffmpeg -i vid.mp4 -s 320x320 -vcodec mpeg4 -acodec aac -strict -2 -ac 2 -ar 44100 -ab 128k output.mp4

  it really degrades the quality

  How can i set the ffmpeg to create atleast as close as possible quality which runs on both android and iPhone

• Convert video from image and audio files using FFMPEG

  22 janvier 2016, par Rama Lingam

  Here i am converted video from images(8) and audio(file size : 307KB).
  But the video is playing one image with audio and others are without audio.
  In my knoledge : Because the audio file size is very low.
  I want to converted video playing all images with audio.
  Sample code :

  $audioPath = 'upload/2016/01/tmp_81332/audio_1453307709.wav';
  
  $convAudioPath = 'upload/2016/01/tmp_81332/output.mp3';
  
  $ffmpeg = '/usr/bin/ffmpeg';
  
  
  
  $convImgPath = 'upload/2016/01/tmp_81332/image%d.jpeg';
  
  $output = 'upload/2016/01/video_81332_1453307709.mp4';
  
  
  
  exec("$ffmpeg -i $audioPath -f mp2 $convAudioPath");
  
  exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -c:a aac -strict experimental -b:a 16k -shortest $output");

  However this extends the output video file to be the length of the audio file if it is longer than the video. Using -shortest cuts the video file short if the audio file is shorter than the video. So is there a flag to tell ffmpeg to cut the keep the length of the output video to the length of the input video ?

• Ffmpeg lose streams while using -map 0

  27 mars 2016, par Ngoral

  I had a strange issue using ffmpeg on Ubuntu 14.04.
  I run a command

  ffmpeg -i output2.avi -c:v h264 -minrate 2000k -maxrate 5000k -bufsize 2000k -profile:v high -level:v 4 -coder 1 -s 640x360 -bf 0 -pix_fmt yuv420p -r 25 -g 25 -c:a aac -ar 48k -b:a 321k -map 0 -y outpu.mp4

  It provides such a usual output in console (already with -loglevel verbose) :

  ffmpeg version N-79004-g2e6636a Copyright (c) 2000-2016 the FFmpeg developers
  
  
  
  
  
   built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --prefix=/home/ngoral/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ngoral/ffmpeg_build/include --extra-ldflags=-L/home/ngoral/ffmpeg_build/lib --bindir=/home/ngoral/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 28.101 / 57. 28.101
  
    libavformat    57. 28.101 / 57. 28.101
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 39.102 /  6. 39.102
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [avi @ 0x2707800] parser not found for codec dvvideo, packets or times may be invalid.
  
      Last message repeated 1 times
  
  Input #0, avi, from 'output2.avi':
  
    Metadata:
  
      encoder         : Lavf57.28.101
  
    Duration: 00:00:20.04, start: 0.000000, bitrate: 28911 kb/s
  
      Stream #0:0: Video: dvvideo, 1 reference frame (dvsd / 0x64737664), yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28684 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
      Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 192 kb/s
  
      Stream #0:2: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 64 kb/s
  
      Stream #0:3: Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp, 117 kb/s
  
  Matched encoder 'libx264' for codec 'h264'.
  
  [graph 0 input from stream 0:0 @ 0x2784f60] w:720 h:576 pixfmt:yuv420p tb:1/25 fr:25/1 sar:16/15 sws_param:flags=2
  
  [scaler for output stream 0:0 @ 0x2749d20] w:640 h:360 flags:'bicubic' interl:0
  
  [scaler for output stream 0:0 @ 0x2749d20] w:720 h:576 fmt:yuv420p sar:16/15 -> w:640 h:360 fmt:yuv420p sar:3/4 flags:0x4
  
  [graph 1 input from stream 0:1 @ 0x27a4fc0] tb:1/48000 samplefmt:s16p samplerate:48000 chlayout:0x3
  
  [audio format for output stream 0:1 @ 0x27a5380] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:1'
  
  [auto-inserted resampler 0 @ 0x27a7ae0] ch:2 chl:stereo fmt:s16p r:48000Hz -> ch:2 chl:stereo fmt:fltp r:48000Hz
  
  [graph 2 input from stream 0:2 @ 0x27a6620] tb:1/48000 samplefmt:s16p samplerate:48000 chlayout:0x3
  
  [audio format for output stream 0:2 @ 0x27a6440] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:2'
  
  [auto-inserted resampler 0 @ 0x27b6be0] ch:2 chl:stereo fmt:s16p r:48000Hz -> ch:2 chl:stereo fmt:fltp r:48000Hz
  
  [graph 3 input from stream 0:3 @ 0x27b6560] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
  
  [libx264 @ 0x27889a0] using SAR=3/4
  
  [libx264 @ 0x27889a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x27889a0] profile High, level 4.0
  
  [libx264 @ 0x27889a0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=0 weightp=2 keyint=25 keyint_min=2 scenecut=40 intra_refresh=0 rc_lookahead=25 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=5000 vbv_bufsize=2000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'outpu.mp4':
  
    Metadata:
  
      encoder         : Lavf57.28.101
  
      Stream #0:0: Video: h264 (libx264), -1 reference frame ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 3:4 DAR 4:3], q=-1--1, max. 5000 kb/s, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.28.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 5000000/0/0 buffer size: 2000000 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 321 kb/s
  
      Metadata:
  
        encoder         : Lavc57.28.101 aac
  
      Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 321 kb/s
  
      Metadata:
  
        encoder         : Lavc57.28.101 aac
  
      Stream #0:3: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 321 kb/s
  
      Metadata:
  
        encoder         : Lavc57.28.101 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (dvvideo (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (mp3 (native) -> aac (native))
  
    Stream #0:2 -> #0:2 (mp3 (native) -> aac (native))
  
    Stream #0:3 -> #0:3 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  *** 3 dup!
  
  No more output streams to write to, finishing.e=00:00:19.84 bitrate= 359.9kbits/s dup=3 drop=0 speed=1.15x
  
  frame=  501 fps= 29 q=-1.0 Lsize=    1792kB time=00:00:20.05 bitrate= 732.2kbits/s dup=3 drop=0 speed=1.14x
  
  video:440kB audio:1331kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.155376%
  
  Input file #0 (output2.avi):
  
    Input stream #0:0 (video): 498 packets read (71712000 bytes); 498 frames decoded;
  
    Input stream #0:1 (audio): 834 packets read (480384 bytes); 834 frames decoded (960768 samples);
  
    Input stream #0:2 (audio): 835 packets read (160320 bytes); 835 frames decoded (961920 samples);
  
    Input stream #0:3 (audio): 0 packets read (0 bytes); 0 frames decoded (0 samples);
  
    Total: 2167 packets (72352704 bytes) demuxed
  
  Output file #0 (outpu.mp4):
  
    Output stream #0:0 (video): 501 frames encoded; 501 packets muxed (451055 bytes);
  
    Output stream #0:1 (audio): 939 frames encoded (960768 samples); 940 packets muxed (724261 bytes);
  
    Output stream #0:2 (audio): 940 frames encoded (961920 samples); 941 packets muxed (639072 bytes);
  
    Output stream #0:3 (audio): 0 frames encoded (0 samples); 0 packets muxed (0 bytes);
  
    Total: 2382 packets (1814388 bytes) muxed
  
  [libx264 @ 0x27889a0] frame I:21    Avg QP:15.30  size:  8718
  
  [libx264 @ 0x27889a0] frame P:480   Avg QP:24.52  size:   557
  
  [libx264 @ 0x27889a0] mb I  I16..4: 20.4% 55.5% 24.1%
  
  [libx264 @ 0x27889a0] mb P  I16..4:  0.0%  0.1%  0.0%  P16..4:  7.6%  3.7%  1.7%  0.0%  0.0%    skip:86.8%
  
  [libx264 @ 0x27889a0] 8x8 transform intra:56.3% inter:50.3%
  
  [libx264 @ 0x27889a0] coded y,uvDC,uvAC intra: 42.0% 39.5% 27.5% inter: 2.6% 1.4% 0.0%
  
  [libx264 @ 0x27889a0] i16 v,h,dc,p: 36% 52%  3% 10%
  
  [libx264 @ 0x27889a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 56% 20% 14%  2%  1%  1%  2%  2%  2%
  
  [libx264 @ 0x27889a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 42% 26%  7%  4%  3%  4%  5%  5%  4%
  
  [libx264 @ 0x27889a0] i8c dc,h,v,p: 66% 13% 17%  4%
  
  [libx264 @ 0x27889a0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x27889a0] ref P L0: 68.1% 11.5% 13.9%  6.5%
  
  [libx264 @ 0x27889a0] kb/s:179.78
  
  [aac @ 0x2747da0] Qavg: 62719.090
  
  [aac @ 0x2748b20] Qavg: 64509.496
  
  [aac @ 0x27498a0] Qavg: -nan

  it seems like it outputs all 3 audiostreams, but then i do

  ffmpeg -loglevel verbose -i outpu.mp4

  And get only 2 audiostreams :

  ffmpeg version N-79004-g2e6636a Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --prefix=/home/ngoral/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ngoral/ffmpeg_build/include --extra-ldflags=-L/home/ngoral/ffmpeg_build/lib --bindir=/home/ngoral/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 28.101 / 57. 28.101
  
    libavformat    57. 28.101 / 57. 28.101
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 39.102 /  6. 39.102
  
    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 'outpu.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.28.101
  
    Duration: 00:00:20.06, start: 0.021333, bitrate: 731 kb/s
  
      Stream #0:0(und): Video: h264 (High), 3 reference frames (avc1 / 0x31637661), yuv420p, 640x360 (640x368) [SAR 3:4 DAR 4:3], 180 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 289 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 254 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler

  What’s wrong with it ?
  It works fine on my Win machine, on virtual machine with Ubuntu on it, but as ran on real Ubuntu it behaves like this. Do you have any ideas ?
  Thanks !