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• ffmpeg options for playing in iPad WebView with tag

  19 septembre 2013, par Waynn Lue

  I'm trying to convert a video to be played in a tag in a WebView in iOS. I've tried the options at this link but it still doesn't seem to play. I've found videos that do successfully play, though, so I'm sure it's possible, I just can't seem to get any working. Here's the ffmpeg -i output for something that works.

  Here's what I tried from the wiki :

  ffmpeg -i {filename} -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 {filename}.ipad.mp4

  But the file doesn't play in the WebView.

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.m4v' :
    Metadata :
      major_brand : M4V 
      minor_version : 1
      compatible_brands : M4V M4A mp42isom
      creation_time : 2005-12-20 20:20:15
    Duration : 00:01:25.50, start : 0.000000, bitrate : 209 kb/s
      Stream #0:0(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 115 kb/s
      Metadata :
        creation_time : 2005-12-20 20:20:15
        handler_name : Apple Sound Media Handler
      Stream #0:1(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 90 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc
      Metadata :
        creation_time : 2005-12-20 20:20:15
        handler_name : Apple Video Media Handler
  

  And here's the output for my input file :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' :
    Metadata :
      major_brand : qt  
      minor_version : 537199360
      compatible_brands : qt  
      creation_time : 2013-07-31 00:47:22
    Duration : 00:00:06.00, start : 0.000000, bitrate : 120849 kb/s
      Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc
      Metadata :
        creation_time : 2013-07-31 00:48:33
        handler_name : Apple Alias Data Handler
  

  edit : Here's the full output of the command :

  wlue :$ ffmpeg -i cheerfulness.mov -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 output.ipad.mp4
  ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    built on Sep 18 2013 18:44:15 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
    configuration : —prefix=/usr/local/Cellar/ffmpeg/1.2.1 —enable-shared —enable-pthreads —enable-gpl —enable-version3 —enable-nonfree —enable-hardcoded-tables —enable-avresample —enable-vda —cc=cc —host-cflags= —host-ldflags= —enable-libx264 —enable-libfaac —enable-libmp3lame —enable-libxvid
    libavutil      52. 18.100 / 52. 18.100
    libavcodec     54. 92.100 / 54. 92.100
    libavformat    54. 63.104 / 54. 63.104
    libavdevice    54.  3.103 / 54.  3.103
    libavfilter     3. 42.103 /  3. 42.103
    libswscale      2.  2.100 /  2.  2.100
    libswresample   0. 17.102 /  0. 17.102
    libpostproc    52.  2.100 / 52.  2.100
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' :
    Metadata :
      major_brand : qt  
      minor_version : 537199360
      compatible_brands : qt  
      creation_time : 2013-07-31 00:47:22
    Duration : 00:00:06.01, start : 0.000000, bitrate : 120849 kb/s
      Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc
      Metadata :
        creation_time : 2013-07-31 00:48:33
        handler_name : Apple Alias Data Handler
  Please use -b:a or -b:v, -b is ambiguous
  [libx264 @ 0x7fa67401fa00] frame MB size (75x120) > level limit (1620)
  [libx264 @ 0x7fa67401fa00] DPB size (5 frames, 17280000 bytes) > level limit (0 frames, 3110400 bytes)
  [libx264 @ 0x7fa67401fa00] MB rate (269730) > level limit (40500)
  [libx264 @ 0x7fa67401fa00] using cpu capabilities : MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  [libx264 @ 0x7fa67401fa00] profile Constrained Baseline, level 3.0
  [libx264 @ 0x7fa67401fa00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options : cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 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=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1200 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
  Output #0, mp4, to 'output.ipad.mp4' :
    Metadata :
      major_brand : qt  
      minor_version : 537199360
      compatible_brands : qt  
      encoder : Lavf54.63.104
      Stream #0:0(eng) : Video : h264 ([33][0][0][0] / 0x0021), yuv420p, 1200x1920, q=-1—1, 1200 kb/s, 30k tbn, 29.97 tbc
      Metadata :
        creation_time : 2013-07-31 00:48:33
        handler_name : Apple Alias Data Handler
  Stream mapping :
    Stream #0:0 -> #0:0 (h264 -> libx264)
  Press [q] to stop, [?] for help
  frame=  180 fps= 16 q=-1.0 Lsize=     828kB time=00:00:06.00 bitrate=1129.2kbits/s    
  video:826kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.177851%
  [libx264 @ 0x7fa67401fa00] frame I:2     Avg QP:32.23  size : 20942
  [libx264 @ 0x7fa67401fa00] frame P:178   Avg QP:41.03  size :  4515
  [libx264 @ 0x7fa67401fa00] mb I  I16..4 : 90.1%  0.0%  9.9%
  [libx264 @ 0x7fa67401fa00] mb P  I16..4 :  6.8%  0.0%  0.0%  P16..4 : 16.8%  0.6%  0.2%  0.0%  0.0%    skip:75.5%
  [libx264 @ 0x7fa67401fa00] final ratefactor : 37.56
  [libx264 @ 0x7fa67401fa00] coded y,uvDC,uvAC intra : 1.2% 16.4% 2.1% inter : 0.1% 3.4% 0.1%
  [libx264 @ 0x7fa67401fa00] i16 v,h,dc,p : 49% 23%  4% 24%
  [libx264 @ 0x7fa67401fa00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 13%  8% 36%  8% 12%  9%  8%  4%  2%
  [libx264 @ 0x7fa67401fa00] i8c dc,h,v,p : 88%  6%  5%  1%
  [libx264 @ 0x7fa67401fa00] ref P L0 : 47.7% 22.0% 16.7%  5.7%  7.9%
  [libx264 @ 0x7fa67401fa00] kb/s:1126.21
  

• trying to build a audio video format convertion tool help required

  19 février 2012, par moon

  hello i am going to build a windows desktop tool that can convert the audio and video formats of all types.

  i am in technology selection phase.

  thinking about java and ffmpeg for this purpose but i come to know there are some formats that ffmpeg can not convert for them what should i do ?

  second is there ffmpge api for java to use intead of using it through process builder ?

  and at last is there any other approach that is more easy and stable from described above ?

  AVI, MPG, MPEG, VOB, WMV, MP4, M4V,

  ASF, MOV, QT, 3GP, DAT, OGM, DVR-MS, FLV, MKV, RM, RMVB, VRO, TS, AMV,
  F4V, MTS, MT2S, WAV, MP3, WMA, OGG, APE,

  M4A, MPC, WV, AMR, AC3, AU to AVI, MPEG, MOV, WMV, MP4, RM, iPod,
  iPad, HTC, PSP, iPhone, Zune, BlackBerry, Apple

  TV, PS3, Xbox360, Creative ZEN, Archos, iRiver, 3GP, FLV, SWF, WAV,
  MP3, WMA, M4A, AMR, AAC, AIFF and AC3

  help required

  regards.

• Revision 44eb577cf7 : invalid_file_test : convert test param from tuple to struct fixes visual studio

  12 juillet 2014, par James Zern

  Changed Paths :
   Modify /test/invalid_file_test.cc

  
  
  invalid_file_test : convert test param from tuple to struct

  fixes visual studio 9 + apple clang builds where the template type is
  interpreted as char[] rather than const char* :

  ::f1_’ : cannot specify explicit initializer for arrays
  error : array initializer must be an initializer list or string literal

  Change-Id : I27286ce341b2f7a09b6202caffd6b72f64fd2234