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exported video doesn't match time i remapped it to down to the millisecond

New Here ,
Aug 10, 2022 Aug 10, 2022

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when I use premiere to change the duration of a clip then open the exported video in AVS video editor the duration of the exported clip doesn't match what I changed it to down to the millisecond which is a problem with the project I'm working on because it causes audio/video desyncronization, could someone please help

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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How are you "mapping"? How are you setting milliseconds in PR?

 

What are your export settings in PR? A screenshot would help.

 

Stan

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New Here ,
Aug 10, 2022 Aug 10, 2022

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  1. I go to "clip > change speed duration" and where it says 00:00:00:00 I'm assuming that it means hours/minutes/seconds/milliseconds. 

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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quote
  1. I go to "clip > change speed duration" and where it says 00:00:00:00 I'm assuming that it means hours/minutes/seconds/milliseconds. 

By @danec41738600

 

Nope. Its hours, minutes, seconds and frames.

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New Here ,
Aug 10, 2022 Aug 10, 2022

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the clip I have is 30 fps and runs 10.600 seconds according to avs video editor.  It needs to be stretched to something that would be exactly 13.292 seconds in avs.  how do I calculate what I need to put into premiere?

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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First, is that clip actually 30fps, or is it really 29.976? Most cameras that show "30fps" actually deliver 29.976. 30 is the "shorthand" for that. MediaInfo would of course show the actual specific framerate.

 

Second ... you can't do partial frames, only complete frames with video. So it looks like that would be 13 seconds and maybe 8 or 9 frames. Whichever is closest.

 

Again ... in video, you cannot do partial frame cuts. And it's puzzling as I've never heard of someone fitting video by milliseconds ...

 

Neil

 

 

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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Try 9 frames (i.e. duration in PR 00:00:10:09). Really only a guess, but let us know.

292 milliseconds in a 29.97 sequence will be (292 / 1000) * 29.97 = 8.75 round to nearest frame = 9.

 

My experience with this is dealing with captions. The .srt export converts frames to milliseconds. So, for example, if you are working in 29.97 drop frame, the 1 frame will equal 1 divided by 29.97 times 1000 milliseconds:

 

(1 / 29.97) X 1000 = 33.3667 etc.

 

So in PR, if a caption starts at zero minutes, 1 second, 1 frame, it will show on the timeline as 00:00:01:01. When you export .srt, you will see:

00:00:01,034

 

The comma is the designation for milliseconds to follow.

 

With drop frame there are other problems, but in a 10 second export, perhaps simple is okay.

 

Stan

 

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Community Expert ,
Aug 11, 2022 Aug 11, 2022

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What is the reason for using AVS?

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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You cannot export in milli seconds all exports are in frames (per second)

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Community Expert ,
Aug 10, 2022 Aug 10, 2022

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Ann is correct. While audio files have a millisecond value, video files do not. There are X number of frames per second, each frame is X/framerate of a second. And I doubt the accuracy of that for every file creation is to the millisecond, way overkill for video computations.

 

Neil

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