MultiMedia Zone

Posts Tagged ‘Sync’

Unfortunately not all conversions go 100% smoothly and some result in the Audio and Video out of

synchronization. This can be due to many reasons with the primary problems being the original movie source

and software/codec clashes. Here I will tell you how to fix these problems with just a few clicks.

Tools needed: WOMBLE MPEG Video Wizard DVD

This software provides three tools ( three methods )  to solve your audio/video sync problem.

a):MPEG GOP Fixer

This tool lets you check and correct GOP time code errors, video and audio PTS (presentation time stamp)

errors, and DVD GOP size violations, which may be present in an MPEG data file.

1. Click the tools button on the Toolbar, and select MPEG GOP Fixer in the drop-down list.

2. In the open dialog window, input your problematical MPEG file.

3. Then, in the “Test Options”, you can choose one solution to deal with your file. e.g. “Fix GOP time

code and PTS errors (Read + Write)” , and then “Start”. The GOP Fixer will automatically scan your MPEG

files and fix the errors.

b): MPEG MBS Scanner

There may occur audio/video sync problem when one MPEG file contains one of the three changes below:

Timebase change, such as a time code restart;

Video encoder settings change, such as image size, frame rate, and bit rate; and

Audio encoder settings change, such as sampling frequency, bit rate, and number of sound channels.

We refer this kind of file as a Multiple Bit Stream (MBS) MPEG file . When this occurs, we can fix this

a/v sync problem by using MPEG MBS Scanner.

1. To open MPEG MBS Scanner, click on the Toolbar and select MPEG MBS Scanner from the list.