Video lag

[withoutfear]

Our youth pastor and I made a video today with a canon 60d dslr camera and edited it with fcpx. All was great with the video, I downloaded a QuickTime substitute and installed a new codec to make the quicktime file work with media shout. Once I got it working I tested the video 4 times, it was perfect. When I played it in service tonight the music finished a good 5 seconds before the video. It was awful. After service I tested it and indeed it was off. I reloaded the movie in media shout and Fired it again and it worked fine. Any ideas on why that happened, is that to be expected of all my videos with MS. Also it was exported into one file so how could they be out of sync? Must be lag at the projector?

[Stever]

Don't assume its the projector. What other devices do you have in line from source to the projector? Have you played the video without using Media Shout to the projectors?
Are you using any switches/scalers in the mix? If so what make model #'s? Many issues can cause frame lag more often than not it is something other than the projector.

[tdangelo]

If it is indeed a five second difference between video and audio don't worry about checking the projector or any of the other video devices. The problem has to be in the computer. That is the only reason to create that much offset.

Now, what we don't know is if it was a software or hardware problem in the computer and if software, was it the manner in which the clip was imported, or a problem on playback.

[Roy Wooten]

I had the same thing happen to me on 9/11 for a background track with video. I tried it again after the service was over and it worked fine.

I updated to the latest release and downloaded new Codecs and a new quick time alternative and I have not had this happen again, but I do not know if I fixed it or that it just has not happened again...Yet.

Roy

[sempei13]

I suspect the computer. Is the video on the HD or on some media? When was the computer last rebooted? How much RAM does it have? You're using a new codec, that could be it.

There's no lag added to the audio by the sound board is there? We add a delay, because of the pieces the video runs through before it hits the screen. I found that a video from the primary campus had an additional delay, so I just had the sound guy dial the audio delay back (in effect, making the audio play sooner). If you've got a digital board, it possible that the scene you were on had a delay and you just didn't know it.

I'd try and get the simplest set you can and play it 20 times in a row. If no delay, wait 30 minutes and try playing again. If no delay, add in pieces and play several times for each addition.

Intermittent problems are hard to track down, but I bet you can do it. The projector would be the last thing I'd suspect, but to be sure, split the signal to a monitor and make sure they're in sync.

Paul