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• Playing large AVI files online with subtitles

  3 mai 2012, par Tareq

  I need a way to play a relatively large avi files (1+ GB) on the web with their subtitles, I have searched a lot for this, the only thing that I came up with was a normal embed without controls and it requires specific browser or application to show controls or even play.

  I have a large number of files (12 TB) so converting these files to mp4 would take ages not to mention having to miss with quality of audio or video.

  Is there a way that allows me to play these online along with their subtitls or should I convert these to MP4 ? I have tried to convert a file to MP4 and it didn't play either apparently it hits the browser limits or something (I tried playing it using flowplayer).

  I was considering a solution like red5, but as I found out it doesn't support avi either.

  I used this command to convert the mp4

  ffmpeg -y -i $file.avi -vcodec copy -acodec copy -copyts -f mp4 $file.mp4

  It toke relatively long time to get converted, if you have a better command or a solution that will work for playing the avis without converting, Please be my guest.

• ffmpeg Too many bits per frame requested

  18 novembre 2016, par GRaecuS

  I am using ffmpeg to convert videos to mp4 format. Everything works fine except with MOV format.

  The command I use for everything is :

  ffmpeg -i input.mov -strict experimental -sameq -s vga -aspect 1.7777 -vcodec libx264 -preset fast -crf 22 -y output.mp4

  but the output I keep getting is :

  ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
  
  built on Mar 12 2012 11:01:05 with gcc 4.4.5
  
  configuration: --enable-libx264 --enable-gpl --disable-yasm
  
    libavutil    51. 32. 0 / 51. 32. 0
  
    libavcodec   53. 42. 0 / 53. 42. 0
  
    libavformat  53. 24. 0 / 53. 24. 0
  
    libavdevice  53.  4. 0 / 53.  4. 0
  
    libavfilter   2. 53. 0 /  2. 53. 0
  
    libswscale    2.  1. 0 /  2.  1. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x21767a0] Referenced QT chapter track not found
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 30.00 (30/1) -> 30.07 (2225/74)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
  
    Metadata:
  
      creation_time   : 2009-04-04 07:12:29
  
      comment         : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
  
      comment-eng     : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
  
    Duration: 00:00:17.76, start: 0.000000, bitrate: 8100 kb/s
  
      Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / 0x7634706D), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 7968 kb/s, 30.07 fps, 30.07 tbr, 8544k tbn, 30 tbc
  
      Metadata:
  
        creation_time   : 2009-04-04 07:12:29
  
        handler_name    : 
  
      Stream #0:1(eng): Audio: pcm_mulaw (ulaw / 0x77616C75), 16000 Hz, 1 channels, s16, 128 kb/s
  
      Metadata:
  
        creation_time   : 2009-04-04 07:12:29
  
        handler_name    : 
  
  [buffer @ 0x2187f00] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
  [scale @ 0x219c120] w:1280 h:720 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0x4
  
  [libx264 @ 0x2190d20] using SAR=4/3
  
  [libx264 @ 0x2190d20] using cpu capabilities: none!
  
  [libx264 @ 0x2190d20] profile High, level 3.0
  
  [libx264 @ 0x2190d20] 264 - core 120 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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=12 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=crf mbtree=1 crf=22.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [aac @ 0x21917e0] Too many bits per frame requested
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      creation_time   : 2009-04-04 07:12:29
  
      comment         : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
  
      comment-eng     : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
  
      Stream #0:0(eng): Video: h264, yuv420p, 640x480 [SAR 4:3 DAR 16:9], q=-1--1, 90k tbn, 30.07 tbc
  
      Metadata:
  
        creation_time   : 2009-04-04 07:12:29
  
        handler_name    : 
  
      Stream #0:1(eng): Audio: aac, 16000 Hz, 1 channels, s16, 128 kb/s
  
      Metadata:
  
        creation_time   : 2009-04-04 07:12:29
  
        handler_name    : 
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
    Stream #0:1 -> #0:1 (pcm_mulaw -> aac)
  
  Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

  It seems the problem is with audio’s bit per frame.
  Which might be the right solution ?

• Generate video from images with ken burns effect using ffmpeg

  1er janvier 2014, par user1615796

  I am trying to generate video from images.

  The following code generates the video, 1 frames per 3 seconds.

       exec("ffmpeg -f image2 -r 1/3 -loop_input -shortest -y  -i tmp/image%3d.jpg -i tmp/ag1.mp3 -target ntsc-dvd -s 1280x720 tmp/video.mwv");

  I want to apply ken burns effect to it, I have searched a lot but couldn't find any solution.

  Can anybody help me out ? If can provide any code snippet, will be really appreciated.