I was ripping an old family video from a CD/DVD and I found the video to be ahead of the sound track. I believe an easy fix would be to load the video on Avidemux and reduce the delay of the soundtrack. I am yet to try that because as soon as I imported the video on Avidemux, I found that no sound was playing even though the original video on VLC Media Player had sound. Then I discovered about the meaningless time stamps on the video. I am attaching the mediainfo findings below for reference.
General
Complete name : D:\pujo 2006.VOB
Format : MPEG-PS
File size : 1 023 MiB
Duration : 14 s 688 ms
Overall bit rate mode : Variable
Overall bit rate : 585 Mb/s
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
Format settings, picture structure : Frame
Duration : 14 s 504 ms
Bit rate mode : Variable
Bit rate : 573 Mb/s
Maximum bit rate : 9 579 kb/s
Width : 704 pixels
Height : 576 pixels
Display aspect ratio : 4:3
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 56.486
Time code of first frame : 00:30:14:22
Time code source : Group of pictures header
GOP, Open/Closed : Open
Stream size : 991 MiB (97%)
Color primaries : BT.601 PAL
Transfer characteristics : BT.470 System B/G
Matrix coefficients : BT.470 System B/G
Audio
ID : 189 (0xBD)-128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Muxing mode : DVD-Video
Duration : 14 s 688 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Delay relative to video : -424 ms
Stream size : 459 KiB (0%)
Service kind : Complete Main
Menu
Format : DVD-Video
Even though it shows here the duration to be 14s I can absolutely confirm it is more than that as I myself had been watching the video for more than 5 minutes before discovering all this. What can I do in this case to properly timestamp the video and correct the sound delay ? Even the seek function in VLC seems to be broken for this particular video file.
Since I am not sure which topic should I post it under, I am currently posting under the topic "Software Playing" as the error might be attributed to specific media player as well, but again I am not so sure about it.
Any help and advice on this matter would be appreciated. Thanks
P.S. A picture of the VLC dialog box in Fullscreen mode
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Thanks a lot @davexnet , that tip definitely worked out for me and the time stamps looks to be corrected now.
But are you sure that I won't be losing picture quality over this remuxing process ? -
No change to the picture. It's not re-encoded just rewrapped in the different container
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But are you sure that I won't be losing picture quality over this remuxing process ?
That looks like a standard VOB to me; ~1000mb, it should give you a video length of around 20 minutes. If it is being smart-copied/rendered, it will fly through it in quick time, probably a minute or so. If it was being re-encoded, it would take much longer.
You can see this difference yourself: do one export with the Video Output set to "Copy", then do another export with Video Output set to "Mpeg2ff". "Copy" took 1 minute on my system with "Mpeg2ff", the full re-encode, taking around 15 minutes.
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