Video/Audio Sync on BluRay

2G wrote on 8/21/2008, 6:26 AM

I rendered a project to m2v BluRay format and brought it into DVDA 5.0. I then brought in the accompanying ac3 audio track from the same project. When I preview it, the video and audio were not in sync. The video was lagging by about a second or more.

I then modified the m2v renderer to include audio. After rerendering I now had an mpa file along with the m2v. Brought them both in, and got the same problem.

I suspect this may just be lag time in the video processor (althought I have a pretty powerful CPU and a graphics card with a GPU). The BluRay player that came with my burner will not play ISO files. So I'm stuck. The only possibility is to go ahead and burn this as is and then play it on the player to see if it's indeed out of sync. But at $15 per disc, I'm not thrilled with having to test it that way.

Is this just a problem with DVDA staying in sync? Should I expect the final rendered BluRay to be fine? Or is this a more serious problem?

Thx.

Comments

nolonemo wrote on 8/21/2008, 1:14 PM

I have not had sync problems. Audio and video out of sync frequently is a computing horsepower problem. What happens if you try to play back a commercial blu-ray disk on your machine?

You can use free software Daemon Tools Lite to mount the ISO as a virtual disc; your player should see that as a BD disk and play it back.

Terje wrote on 8/21/2008, 11:18 PM

go ahead and burn this as is and then play it on the player to see if it's indeed out of sync. But at $15 per disc, I'm not thrilled with having to test it that way.

You should always do this no matter what. That is what BD-RE disks are for. They are re-writable, and you will therefore not waste a disk when burning. They cost a wee bit more, but you can burn it enough times to test disks for a few years. With Blu-Ray I think this is even more important than with standard DVDs. I have had nothing but trouble with the PC-based Blu-Ray players, and trust nothing that hasn't gone through my Playstation.