• Compression Techniques

  buffer uderflow while joining vob files

  Posted by Bimal Kumar on August 13, 2014 at 9:23 am

  hello
  I am getting following error while trying to join 4 vob files

  [vob @ 0x1c00e920] packet too large, ignoring buffer limits to mux it
[vob @ 0x1c00e920] buffer underflow st=1 bufi=10093 size=19311
[vob @ 0x1c00e920] buffer underflow st=1 bufi=12113 size=19311
[vob @ 0x1c00e920] packet too large, ignoring buffer limits to mux it
[vob @ 0x1c00e920] buffer underflow st=1 bufi=12113 size=19311
[vob @ 0x1c00e920] buffer underflow st=1 bufi=14133 size=19311
[vob @ 0x1c00e920] packet too large, ignoring buffer limits to mux it
[vob @ 0x1c00e920] buffer underflow st=1 bufi=14133 size=19311

  this is the command i am using
  system("ffmpeg -f concat -i list.txt -c:v copy -c:a copy -bufsize 1835k -f vob joined.mpg");

  mediainfo on one of the vob file gives this output

  
General
Complete name : VTS_02_1.VOB
Format : MPEG-PS
File size : 1 000 MiB
Duration : 39mn 59s
Overall bit rate mode : Variable
Overall bit rate : 3 496 Kbps

  Video
  ID : 224 (0xE0)
  Format : MPEG Video
  Format version : Version 2
  Format profile : Main@Main
  Format settings, BVOP : Yes
  Format settings, Matrix : Default
  Format settings, GOP : M=3, N=15
  Duration : 39mn 59s
  Bit rate mode : Variable
  Bit rate : 2 979 Kbps
  Maximum bit rate : 3 500 Kbps
  Width : 720 pixels
  Height : 480 pixels
  Display aspect ratio : 4:3
  Frame rate : 29.970 fps
  Standard : NTSC
  Color space : YUV
  Chroma subsampling : 4:2:0
  Bit depth : 8 bits
  Scan type : Interlaced
  Scan order : Bottom Field First
  Compression mode : Lossy
  Bits/(Pixel*Frame) : 0.288
  Time code of first frame : 00:00:00:00
  Time code source : Group of pictures header
  Stream size : 852 MiB (85%)
  Color primaries : BT.470 System M
  Transfer characteristics : BT.470 System M
  Matrix coefficients : BT.601

  Audio
  ID : 189 (0xBD)-128 (0x80)
  Format : AC-3
  Format/Info : Audio Coding 3
  Mode extension : CM (complete main)
  Format settings, Endianness : Big
  Muxing mode : DVD-Video
  Duration : 39mn 58s
  Bit rate mode : Constant
  Bit rate : 448 Kbps
  Channel(s) : 6 channels
  Channel positions : Front: L C R, Side: L R, LFE
  Sampling rate : 48.0 KHz
  Bit depth : 16 bits
  Compression mode : Lossy
  Stream size : 128 MiB (13%)

  Menu


  ffmpeg version
  ffmpeg version N-63147-g8b96f31 Copyright (c) 2000-2014 the FFmpeg developers

  Need help in joining the files.
  Thanks

  Bimal Kumar replied 12 years ago 1 Member · 0 Replies
• 0 Replies

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