Forum Discussion
URGENT || Audio lag in large file
We've run into the same issue here. It's not a trigger issue. As a hypothetical...
track 1 starts at 0.5 seconds and runs until the 10.5 second mark. track 2 starts at 11 seconds. However, when the lag kicks in, the audio on track 1 may not start until 2 seconds and runs until 12 seconds - but, track 2 starts on time at 11 seconds. You end up with 1 second of overlapping audio.
On larger files, the delay can be as much as 45 seconds. I've seen slides in which track 2 starts before track 1.
Is this a software simulation with screen action recordings? Getting rid of the screen action recordings on slides in which they weren't needed has really helped with our lags.
Hi angelo - I might be missing the point here, but are we saying that the audio is a separate media item to the screen recording? i.e. are you trying to synchronise an audio track, or several audio tracks with a video in Storyline?...
,,,If so, I would seriously recommend getting Adobe Premier Pro or something like it and dropping your video in then you can just drop your audio segments into separate audio tracks and just slide them along so they line up with the screen recording. You can still chunk the output up into separate video segments but the audio is then part of the video. This would defnitely be my preferred method.
However, if you can't go that route you are back to using Storyline triggers. Let's suppose I want to start audio1 when video1 starts and audio2 when video1 reaches 10 seconds audio1 is 8 seconds. There are a number of ways you can do this:
One way is - slice video 1 into two parts - video1A (10 seconds) and video1B (10 seconds onwards) Then start audio1 when video1A starts (by putting them on the base timeline together). Put audio2 and video1B on a new layer then show that layer when video1A completes using the "When the media completes" trigger:
Using this method you know audio2 starts only after the first part of your screen recording has finished. It doesn't fix your video lag if you are saying that it takes two seconds for your video to start but it stops it getting progressively worse.
I still don't fully understand what you are trying to do so apologies if my solutions are off target.
Good luck...
PS - if you do use Premier Pro export the video using Constant Frame Rate (CFR) - see my notes earlier in the thread.