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video gets corrupted after cutting

Community Beginner ,
Oct 22, 2018 Oct 22, 2018

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Needed to cut an unnecessary portion of the video. So, after I cut it I replayed it to make sure it was at the right point. I noticed that right after the point I cut the video it starts glitching and and gets the audio out of sync. For example, Lets say I cut the video at 8 seconds when I play from that point the video starts skipping(like when a CD plays the same part of the song over and over again) say it gets to 10 seconds. The Audio hasn't skipped a beat it is right were it should be but the video is now delayed. Please let me know if anything needs clarifying. This is really difficult to try and explain! 

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LEGEND ,
Oct 22, 2018 Oct 22, 2018

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What device created that media? This sounds like it's possibly VFR, variable framerate, rather than CFR,  constant.

If VFR, going to the clips in the bin and right click "modify/interpret" options then setting the interpret media as option set to the frame rate used in camera may help.

This may not fix a clip already on a timeline.

Neil

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Community Beginner ,
Oct 22, 2018 Oct 22, 2018

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I checked and it is set to use the same as the source material. the only option that I could see for frame rate was either assume 1 FPS or use the source material.

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LEGEND ,
Oct 22, 2018 Oct 22, 2018

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Change the assume to the framerate you had set on the device.

Neil

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Community Beginner ,
Oct 22, 2018 Oct 22, 2018

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So far that has fixed the issue but now the audio sounds like the chipmunks.

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Adobe Employee ,
Nov 20, 2018 Nov 20, 2018

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melissam,

Kindly check Audio Hardware settings to see if you have the right devices selected.

Thanks,
Kevin

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Community Beginner ,
Oct 22, 2018 Oct 22, 2018

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Got looking into it more and it still does it sometimes. I it is to high of a frame rate for what it should be it is moving to fast. I also double checked the FPS.

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LEGEND ,
Oct 22, 2018 Oct 22, 2018

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What framerate was your device set for?

Neil

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Community Beginner ,
Oct 25, 2018 Oct 25, 2018

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60 FPS. The file on the computer is 59.94. With "use frame rate from file" selected it says 29.97

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LEGEND ,
Oct 26, 2018 Oct 26, 2018

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Is the file progressive or interlaced?

Download/Install 'MediaInfo', a very good free app heavily used 'around here' to check what's inside media files. After getting that applet's icon on the desktop, drag/drop this media file onto that icon ... when MediaInfo then opens, select the "Tree View" viewing mode in MediaInfo, then look at the Video section. Actually, do a screen-grab of it and drag/drop that png file onto your reply box.

In a lot of cases, "60fps" is just a shorthand mode for saying "29.97 interlaced" ... as there aren't 60 frames per second, but 60 ​fields​ per second ... each field being 1/2 of the data of the frame as horizontal lines across the image. So changing that media or reading/interpreting it at 29.97 ​progressive​ actually is a correct reading of the file.

So ... you can also try modify/assume frame-rate at both 60fps and 29.97. See what happens.

Neil

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