Audio and Video synchronization *solved*

[Meriks]

I have this AVI file (with xVid compression), and the audo lags about 2.5 seconds. I want a freeware tool to fix the audio-video lag. What software should I use to sync them?

[Baldrick]

See https://forum.videohelp.com/topic316884.html#1625975

[Meriks]

I searched before asking this, but I didn't find that one. Than you!

Anyways, I figured what the appropriate value for Interleaving is, using VirtualDob. But my problem is I there is no option to save as Direct Stream Copy. There is a Save As AVI option but it says the final AVI will be 10GB in size (the original is less than 1GB). Am I missing something? Or is this normal, and I should recompress the AVI after it is saved (then how?)?

[guns1inger]

Virtualdub | Video -> Direct Stream Copy | File -> Save AVI As

You might also need to check that Audio -> Direct Stream Copy is also set.

[Meriks]

Perfect! This one is solved, but now I have encountered a new problem: https://forum.videohelp.com/topic345981.html#1812447

Please advise there.

[ConverterCrazy]

I tried using it with Virtualdub. No matter how I try the Virtualdub keeps complaining about my Video not being a compatible Video for windows type!

Now what can one -- with no technical knowledge -- do to remove audio lag?

[guns1inger]

Start with a mediainfo tree view of the file. Post it here so we can see what you have to work with.

You can use AVI Demux for this as well. You will get more specific answers if you tell us more about the file

[ConverterCrazy]

Thank you for your reply.

Here are the details as desired:

C:\Documents and Settings\Rinku\Desktop\ocaand.avi
General
Complete name : C:\Documents and Settings\Rinku\Desktop\ocaand.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 31.4 MiB
Duration : 3mn 28s
Overall bit rate : 1 264 Kbps
Writing application : MEncoder Sherpya-SVN-r30075-4.2.5
Writing library : MPlayer
Video #0
ID : 0
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 3mn 28s
Bit rate : 1 027 Kbps
Width : 720 pixels
Height : 540 pixels
Display aspect ratio : 4:3
Frame rate : 30.000 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.088
Stream size : 25.5 MiB (81%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
Audio #1
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 55
Codec ID/Hint : MP3
Duration : 3mn 27s
Bit rate mode : Variable
Bit rate : 224 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Resolution : 16 bits
Stream size : 5.56 MiB (18%)
Alignment : Aligned on interleaves
Interleave, duration : 26 ms (0.78 video frame)
Interleave, preload duration : 294 ms
Writing library : LAME3.98.2
======
Hope it helps.

[redwudz]

Do you have the Xvid codec installed? You will probably also get a warning about variable bitrate audio, but you can generally ignore that.

[ConverterCrazy]

Thanks, redwudz.

I downloaded and installed it from the link you gave.

But I don't know how to go about it! I can't even configure the Xvid codec! I don't understand it.

[redwudz]

If you need to configure it in VD, go to 'Video>Compression>Xvid>Configure' and you will see the settings. If you click on the 'Target bitrate' it will change to 'Target quantizer'. Select '2' and you will get about the same quality as the original file. But you have little control of size. '3' will give you a smaller file at a bit less quality.

Or if you want a set size, use 'Target bitrate' and select the desired size. More accuracy for size will be with a two pass encode. Select 'Twopass- 1st pass' and it will generate a file that will tell the encoder how to distribute the bitrate. The 'Twopass - 2nd pass' you select for the second pass that will do the actual encoding. I use the 'unrestricted' 'Profile @ Level' most times.

In general, you don't need to make any other adjustments, leave them at default unless you want to visit the Xvid site for more info on using them.

[ConverterCrazy]

My AVI file plays audio but, no video. Please suggest some solution.

The Media Info

g:\Documents and Settings\user\My Documents\The KMPlayer\Capture\Clip_Bhajan.AVI

General
Complete name : g:\Documents and Settings\User\My Documents\The KMPlayer\Capture\bhajan.AVI
Format : AVI
Format/Info : Audio Video Interleave
File size : 17.5 MiB
Duration : 3mn 15s
Overall bit rate : 748 Kbps
Video #0
ID : 0
Format : avc1
Codec ID : avc1
Duration : 3mn 15s
Bit rate : 638 Kbps
Width : 480 pixels
Height : 360 pixels
Display aspect ratio : 4:3
Frame rate : 25.000 fps
Resolution : 24 bits
Bits/(Pixel*Frame) : 0.148
Stream size : 14.9 MiB (85%)
Audio #1
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : FF
Duration : 13s 339ms
Bit rate : 1 411.2 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 44.1 KHz
Resolution : 16 bits
Stream size : 2.24 MiB (13%)
Alignment : Split accross interleaves
Interleave, duration : 23 ms (0.58 video frame)
====================

Thanks