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Loss of audio sync when previewing to external monitor
I’ve got a documentary I am working on that has quite a few effects – pans/zooms/speed changes, etc… These appear with th orange (unlimited) render bar over them (my RT settings are unlimited/dynamic/dynamic/full quality).
Anyway – the video plays fine in the canvas (a little jumpy as can be expected with unrendered video – but audio sync is maintained). When I turn the external video on, the audio is out of synch after paying through one of these non rendered spots. If I stop and restart the video, it is synched again until it passes the next unrendered spot.
Not a big problem, but I am often using external video feature to burn rough edits to a standalone DVD player for the client to review. Obviously the loss of audio sync is unacceptable. I don’t want to render every time I burn a rough edit for review.
Is there a setting or something I am missing?
Thanks for all your help now and in the past!
-Mike
G5 – 2GIG DUAL – 2GIG RAM
FCP; AE; PS; DSP -
4 Replies
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You have to render. If you render as you go you won’t have to render all the time and your render times will get shorter as you will only render that effect you just worked on. Do your capture settings match your timeline settings? FCP is dropping frames (which the alert must be turned off in your preferences otherwise a warning would pop up saying that it’s dropping frames) which is causing the audio sync loss.
Jeremy
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Thank you for your help – the problem is dropped frames. I don’t understand why they are being dropped, but whatever. I’ve also enabled auto render.
Maybe you can help me with this – I’ve got a still photo up in front of me right now – it’s kind of black and white line art, so I’ve deinterlaced it and added sepia. I’m viewing it on an external monitor and the quality of the picture on the monitor varies as to whether I have the viewer, canvas or timeline activated. All seem to show the applied effects, but it is much clearer on the monitor when the viewer is active than when the canvas or timeline are active. For instance – I can read the caption when the viewer is activated, but not when the other two are active. It renders fine anyway. So it’s just a question of resources I suppose.
G5 – 2GIG DUAL – 2GIG RAM
FCP; AE; PS; DSP -
Go to your sequence > render all and sequence > render selection menus. Make sure there’s a check mark by all options. Hit option-r. This will render all rt effects, even the full ones. Then look at everything on your external monitor and don’t judge the quality of anything looking at the viewer or canvas. What codec are you working in, dv? if you have the photo loaded up in your viewer from the browser, you are looking at it uncompressed, then if you are looking at the rendered photo from your timeline while the playhead it parked on the canvas, then you are looking at dv compression.
Make sense?
Jeremy
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Yes – you got it. What I was looking at was the uncompressed file from the browser in the viewer. It does make a lot of sense. I am working with the DV codec and understand the rendering process – as I said it all renders nicely, I was just wondering why the difference in the viewer – now I see.
Thanks!
G5 – 2GIG DUAL – 2GIG RAM
FCP; AE; PS; DSP
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