Category : Software

How to Fix Audio-Video Sync Problems in MPEG Files

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 DVDThis software provides three tools ( three methods ) to solve your audio/video sync problem. a):MPEG GOP FixerThis 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 simulation software 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 ScannerThere 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; andAudio 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.2. In the open dialog window, input your problematical MPEG file, then click “Scan” to start finding the errors.3.