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• ffmpeg : unsync audio after processing

  18 novembre 2013, par QuickSilver

  I am recording a video and using RecordRTC : WebRTC . After receiving the webm video and wav audio at server, I'm encoding it to a mp4 file using ffmpeg(executing shell command via php). But after encoding process, the audio is unsync with video (audio ends before video). How can I fix this ?

  js code is here

  ffmpeg command used is :

  ffmpeg -y -i 166890589.wav -i 166890589.webm -vcodec libx264 166890589.mp4

  Console output :

  ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2000-2013 the Libav developers
  
    built on Nov  9 2013 19:15:52 with gcc 4.7.3
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [wav @ 0x81caa60] max_analyze_duration reached
  
  Input #0, wav, from '166890589.wav':
  
    Duration: 00:00:07.05, bitrate: 1411 kb/s
  
      Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
  
  [matroska,webm @ 0x823c340] Unknown entry 0x63C5
  
  [matroska,webm @ 0x823c340] Estimating duration from bitrate, this may be inaccurate
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 10.00 (10/1)
  
  Input #1, matroska,webm, from '166890589.webm':
  
    Duration: 00:00:08.40, start: 0.000000, bitrate: N/A
  
      Stream #1.0: Video: vp8, yuv420p, 320x240, PAR 1:1 DAR 4:3, 10 tbr, 1k tbn, 1k tbc (default)
  
  [buffer @ 0x8245620] w:320 h:240 pixfmt:yuv420p
  
  [libx264 @ 0x82618a0] using SAR=1/1
  
  [libx264 @ 0x82618a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x82618a0] profile Main, level 1.1
  
  [libx264 @ 0x82618a0] 264 - core 123 r2189 35cf912 - 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=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=10 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=1.25 aq=1:1.00
  
  Output #0, mp4, to '166890589.mp4':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
      Stream #0.0: Video: libx264, yuv420p, 320x240 [PAR 1:1 DAR 4:3], q=-1--1, 10 tbn, 10 tbc (default)
  
      Stream #0.1: Audio: libvo_aacenc, 44100 Hz, 2 channels, s16, 200 kb/s
  
  Stream mapping:
  
    Stream #1.0 -> #0.0
  
    Stream #0.0 -> #0.1
  
  Press ctrl-c to stop encoding
  
  frame=   84 fps=  0 q=25.0 Lsize=     260kB time=7.06 bitrate= 301.3kbits/s    
  
  video:83kB audio:172kB global headers:0kB muxing overhead 1.783102%
  
  frame I:1     Avg QP:17.52  size:  6554
  
  [libx264 @ 0x82618a0] frame P:41    Avg QP:19.07  size:  1555
  
  [libx264 @ 0x82618a0] frame B:42    Avg QP:20.01  size:   325
  
  [libx264 @ 0x82618a0] consecutive B-frames: 33.3%  0.0%  0.0% 66.7%
  
  [libx264 @ 0x82618a0] mb I  I16..4: 36.7%  0.0% 63.3%
  
  [libx264 @ 0x82618a0] mb P  I16..4:  3.8%  0.0%  5.0%  P16..4: 34.3%  9.8%  7.1%  0.0%  0.0%    skip:40.0%
  
  [libx264 @ 0x82618a0] mb B  I16..4:  1.4%  0.0%  0.1%  B16..8: 37.5%  5.5%  0.4%  direct: 2.5%  skip:52.5%  L0:41.4% L1:51.5% BI: 7.2%
  
  [libx264 @ 0x82618a0] coded y,uvDC,uvAC intra: 40.7% 76.2% 26.8% inter: 10.9% 22.5% 2.7%
  
  [libx264 @ 0x82618a0] i16 v,h,dc,p: 28% 34% 23% 15%
  
  [libx264 @ 0x82618a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 28% 21%  3%  4%  4%  5%  3%  3%
  
  [libx264 @ 0x82618a0] i8c dc,h,v,p: 49% 20% 26%  4%
  
  [libx264 @ 0x82618a0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x82618a0] ref P L0: 62.7%  4.6% 16.3% 16.4%
  
  [libx264 @ 0x82618a0] ref B L0: 79.0% 21.0%
  
  [libx264 @ 0x82618a0] kb/s:80.00

• linking against SDL library on ubuntu

  18 novembre 2013, par ali129

  this is my first post
  I have this problem with SDL library and "ffmpeg's ffplay" and "dosbox" on ubuntu. Here is what happenning :
  I have installed SDL and code::blocks.
  I also wrote a simple sdl program that shows a picture and tried to compile it tree ways :

  1- On command prompt which compiled and works perfectly. ( i mean : gcc -o hellosdl hellosd.c -lsdlmain -lsdl)

  2- On code::blocks by choosing file->new->project->SDL project
  which compiled but gives an error regarding i can't initialize graphic

  and finally
  3- On code::blocks but this time i manually configured sdl. i mean i simply choosed a blanked c file.then added sdl linker options "-lsdlmain and -lsdl" in code::blocks linker settings. and this time the program workes perfectly.

  Now the problem i have with dosbox and ffmpeg. I tried to compile these programs by running ./configure and make and they compiled without any error. but when i try to run dosbox or ffplay they give me these errors :

  ffplay error :
  ffplay version 0.11.1.git Copyright (c) 2003-2012 the FFmpeg developers
  built on Oct 15 2013 04:34:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration :
  libavutil 51. 73.101 / 51. 73.101
  libavcodec 54. 56.100 / 54. 56.100
  libavformat 54. 27.101 / 54. 27.101
  libavdevice 54. 2.100 / 54. 2.100
  libavfilter 3. 16.104 / 3. 16.104
  libswscale 2. 1.101 / 2. 1.101
  libswresample 0. 15.100 / 0. 15.100
  Could not initialize SDL - No available video device
  (Did you set the DISPLAY variable ?)

  and yes my DISPLAY variable is set correctly

  echo $DISPLAY
  :0.0

  and

  dosbox error :

  ---

  Exit to error : Can't init SDL No available video device

  i also tried installing dosbox using sudo apt-get install dosbox and it works perfectly.

  i don't know why for some occasion my sdl library works and for some doesn't .
  it would be great if you could help me.

• Encoder (codec none) not found for output stream #0:1 [on hold]

  16 novembre 2013, par Gururak

  Hi i built ffmpeg executable on Redhat5. I want to mix two Audio using the command multiple
  "ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex amix=inputs=3:duration=first:dropout_transition=3 OUTPUT.mp3".

  I enabled libflamemp3 library without any error.

  [root@localhost ~]# ffmpeg -i /root/media/Katlalli.mp3 -i /root/media/Katlalli.mp3 -filter_complex amix=inputs=2:duration=first:dropout_transition=2 /root/media/OUTPutnew123.mp3
  
  ffmpeg version 2.1 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Nov 14 2013 03:17:10 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-46)
  
    configuration: --enable-libmp3lame
  
    libavutil      52. 48.100 / 52. 48.100
  
    libavcodec     55. 39.100 / 55. 39.100
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  [mp3 @ 0x193ef240] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '/root/media/Katlalli.mp3':
  
    Metadata:
  
      artist          : Yograj Bhat
  
      title           : Katlalli Karadige
  
      track           : 3
  
      album           : Paramathma
  
      album_artist    : Puneet Rajkumar
  
      genre           : Kannada
  
      composer        : V.Harikrishna
  
      date            : 2011
  
    Duration: 00:04:41.46, start: 0.000000, bitrate: 191 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
  
      Stream #0:1: Video: mjpeg, yuvj420p(pc), 200x200 [SAR 96:96 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : thumbnail
  
        comment         : Cover (front)
  
  [mp3 @ 0x194090a0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, mp3, from '/root/media/Katlalli.mp3':
  
    Metadata:
  
      artist          : Yograj Bhat
  
      title           : Katlalli Karadige
  
      track           : 3
  
      album           : Paramathma
  
      album_artist    : Puneet Rajkumar
  
      genre           : Kannada
  
      composer        : V.Harikrishna
  
      date            : 2011
  
    Duration: 00:04:41.46, start: 0.000000, bitrate: 191 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
  
      Stream #1:1: Video: mjpeg, yuvj420p(pc), 200x200 [SAR 96:96 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
  
      Metadata:
  
        title           : thumbnail
  
        comment         : Cover (front)
  
  File '/root/media/OUTPutnew123.mp3' already exists. Overwrite ? [y/N] y
  
  Output #0, mp3, to '/root/media/OUTPutnew123.mp3':
  
    Metadata:
  
      artist          : Yograj Bhat
  
      title           : Katlalli Karadige
  
      track           : 3
  
      album           : Paramathma
  
      album_artist    : Puneet Rajkumar
  
      genre           : Kannada
  
      composer        : V.Harikrishna
  
      date            : 2011
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp (default)
  
      Stream #0:1: Video: none, q=2-31, 128 kb/s, 90k tbn
  
      Metadata:
  
        title           : thumbnail
  
        comment         : Cover (front)
  
  Stream mapping:
  
    Stream #0:0 (mp3) -> amix:input0
  
    Stream #1:0 (mp3) -> amix:input1
  
    amix -> Stream #0:0 (libmp3lame)
  
    Stream #0:1 -> #0:1 (mjpeg -> ?)
  
  Encoder (codec none) not found for output stream #0:1

  But when i try to combine two mp3 audio,
  "ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex amix=inputs=3:duration=first:dropout_transition=3 OUTPUT.mp3".

  I am getting error like

  "Encoder (codec none) not found for output stream #0:1"

  so please help me how to link or install "libmp3flame" on Redhat5.