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conversion problem

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Peter Robertson
conversion problem
on May 5, 2013 at 6:19:57 pm

I have a clip that is about an hour long. It plays fine in the timeline but when I save it as a QuickTime file the audio goes out of sync about a third of the way in. It has done this after 4 attempts. The audio goes out of sync in the same spot each time--there is a noticeable 'skip' in the QT file always in the same spot.. Any suggestions how to fix this? Thanks.

Pedro


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Shane Ross
Re: conversion problem
on May 5, 2013 at 8:46:15 pm

What is the codec of this clip in the timeline?

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Peter Robertson
Re: conversion problem
on May 6, 2013 at 1:05:27 am

I'll have to double check but I think it is h264.

Pedro


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Steve Eisen
Re: conversion problem
on May 6, 2013 at 2:41:08 am

Convert that h.264 clip to an FCP friendly editing codec such as ProRes.

Steve Eisen
Eisen Video Productions
Vice President
Chicago Creative Pro Users Group


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Peter Robertson
Re: conversion problem
on May 6, 2013 at 2:31:26 pm

I checked and the clip is not h264 but HDV 1080i60 which I imported from tape into FCP. I use this same workflow all the time and I have never had a problem like this. It plays in the Viewer and the Canvas correctly with no audio sync problems but when I export it to QuickTime movie it goes out of sync in the same spot. ???

Thanks.

Pedro


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Shane Ross
Re: conversion problem
on May 6, 2013 at 7:17:32 pm

Change the Sequence Setting Compressor to ProRes. Render...then export again.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Peter Robertson
Re: conversion problem
on May 7, 2013 at 3:38:33 pm

This seems to have fixed the audio sync problem but when I export to a Quicktime movie from FCP my file size is HUGE, and thus gives me some extreme processing times in compressor. My original file that was out of sync was 1.68 GB, but now my QT file exported using the ProRes file is 30GB. Any suggestions on how I could bring my files sizes down and thus my compressor processing times down as well. I'm exporting a QT mp4 using h264. The clip is about an hour long.

Thanks.

Pedro


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Shane Ross
Re: conversion problem
on May 7, 2013 at 4:59:59 pm

After you render, export a REFERENCE Quicktime...don't make it self contained. Then take that into Compressor.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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