AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT
by Keith
on
Oct 20, 2005 at 3:42:33 pm
I just exported my timeline to a DVD, and upon playing the DVD, I noticed that some audio/video clips are out-of-sync. The project is a 1-hour long award video that includes lots of stills, graphics and only a handful of audio/video clips. The project plays back fine from the timeline and this sync issue is only with DVD export and only noticable with some of the clips.
Any suggestions ?
Only thought I have: would lowering the IPB settings make a difference? They are currently set at the default rates (6.0 min, 8.5 max)
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by mark harvey on Oct 21, 2005 at 3:00:29 pm
I used to have these problems when exporting to DVD if I had put a color clip (black) at the beginning of the sequence....to get around this, I created a short black clip render in After Effects. I rendered out with sound (Silence) from After Effects....I use this at the beggining of my sequences and problem is solved. I am on a Liquid Blue, but I imagine the DVD export is from the same engine.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by Keith on Oct 21, 2005 at 3:41:40 pm
What is the differnece between a black clip/snapshot at the beginning of the sequence vs. a black clip from after effects ? Also - this is a project without a DVD menu, just an export of the timeline.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by mark harvey on Oct 25, 2005 at 2:02:34 pm
I had problems because of the black clip. The difference between the black out of After Effects and the color clip from Liquid is huge. You can't see, or hear the difference, but Liquid sees the difference. The After Effects has embedded sound attached to the clip, whereas the color clip doesn't. I found that Liquid had to process the embedded sound and include it in the export....even though it was silence, it had to be exported, and therefore it kept all of my sound synced. Leaving a space on the timeline at the beginning gave the same problem as a color clip, namely un-synced audio.
This was the fix that I found worked for me....I continue to use it, and have always had perfectly synced audio since I started using it.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by Keith on Oct 26, 2005 at 1:49:01 am
Since I don't have after effects - can you think of any other work around ? I do have Boris Red.
Also, if you can clarify your work around to prevent sync issues, I would really appreciate it. - Hopefully I can get this to work even though I don't have after effects.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by stephenlnoe on Oct 26, 2005 at 2:54:15 am
Check your audio thoughout the project. If there are any 44.1kHz sampled files mixed with 48kHz files in your sequence, it has been known to throw the encoder out of sync.
You can mix video media 10 ways to sunday in Liquid, but you can't mix audio sample rates normally. It's bad mojo.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by Keith on Oct 26, 2005 at 3:20:47 pm
The only way I've ever exported this project is by including 2 seconds of the blank timeline after the mark in point. (it was someone else who suggested trying to put a color clip or a file from after effects.)
I will double check the audio kHz settings - although I'm almost positive they're all the same.
I will also try to fuse the entire sequence and see if that works.
Also may try exporting with lower IBP settings.
The other thing I was surprised about is that the Spicemaster effects were jittery on the DVD, but played fine from the timeline.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by Keith on Oct 27, 2005 at 3:04:40 am
All of my captured audio files are 48 kHz.
All of my imported music from CD's are 44.1 kHz.
Since the project is done, I hope that by fusing the sequence will be a work around.
For future editing, do you know how I can import music at 48 ? I "rip music" from a CD via windows media and then link the file into Liquid. I might try to copy the music into Liquid instead of linking to the windows media file - maybe that will work?
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by stephenlnoe on Oct 28, 2005 at 7:18:48 pm
Fusing will not fix this problem. You'll need to conform the 44.1 clips to 48kHz through an external program and then reimport them for use on the timeline. I believe Audacity will do this for you and it is free. I know the scenario well and where audio is concerned, its a safe bet that you MUST conform it in order to keep your timeling in sync with Liquid 6.1.
Just in case you do not have an external audio app like Sonar or Protools etc.
Re: AUDIO OUT OF SYNC - ONLY WITH DVD EXPORT by Keith on Oct 28, 2005 at 9:42:25 pm
Thanks,
In the meantime, I exported the video without any music and it was still out of sync, so then I concluded that it must have nothing to do with the 44.1 audio clips. And I did test to fuse it which of course didn't help.
Anyway, I will try your suggestion.
Thanks!
P.S. as a rule of them, when exporting video (like for windows media, DVD, etc.... )is it better to do 44.100 or 48 ? or doesn't it matter
