On Mon, 2008-09-15 at 20:29 +0200, Inge en Wouter Kok wrote: > Finally it is finished, but I'm having serious trouble in getting the > video synchronized with the audio. I've tried doing a clean reinstall, > using different containers, etc., but an irritating time difference > remains. In render as well as playback/preview in compositor.
Inge, I have found that it is next to impossible to accurately synchronize audio and video in the GUI - the frames displayed along the timeline are often out of order by several seconds, even when you zoom in to a fraction of a second detail. To ensure that the audio synchs up perfectly, I have learned to manually edit the .XML file directly and calculate the correct start position and duration of each audio clip based on the sample rate (e.g., at 16000, a sound effect that takes place at 2.1 seconds would have a start position of 33600). Here's a short example of what I was able to do by manually editing the XML source: http://pbs.steigerfamily.com/boing.avi ... and here is the XML source itself: http://pbs.steigerfamily.com/boing.xml ... look for the section labeled <TITLE>Bounce Audio</TITLE> to see how I intersperse silence of a given duration with audio clips of a given duration in order to perfectly synchronize the image motion with the sound. Even with this limitation, Cinelerra is more powerful than any other (Linux-based) alternative so I'm willing to put up with the annoyance! -- Peter B. Steiger Cheyenne, WY _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
