Trimming In DVD Workshop

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G H

Trimming In DVD Workshop

Post by G H »

Can I trim a mpeg file (audio and video) How
Thanks
George
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skier-hughes
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Post by skier-hughes »

Can't get to WS now, and I've not trimmed a file for ages, but I'm sure in edit mode you use the two sliders just under the preview window to mark the in and out points. Bound to be some keyboard shorcut or button to press as well.
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G H

Post by G H »

Thanks
This will trimm your video but not the audio
George
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Devil
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Post by Devil »

I think it's OK to trim DV AVIs before encoding (these have the A & V interleaved) but trimming encoded MPEG is probably a no-no unless you know exactly where the I frames are or you have a GOP of 1, which is not very economical.
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skier-hughes
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Post by skier-hughes »

G H wrote:Thanks
This will trimm your video but not the audio
George
:oops: Which now you say it was the reason I haven't done it again :P
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GeorgeW
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Post by GeorgeW »

Devil wrote:I think it's OK to trim DV AVIs before encoding (these have the A & V interleaved) but trimming encoded MPEG is probably a no-no unless you know exactly where the I frames are or you have a GOP of 1, which is not very economical.
I suppose you could use the Next/Prev I-Frame while Trimming :roll:


George, are your mpeg videos program or elementary streams (are the video/audio combined into one file, or are they separate files on your hard drive) :?:

Regards,
George
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G H

Post by G H »

they are separate files on my hard drive
George
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deklerkt
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only combined streams work

Post by deklerkt »

You can only trim a n MPEG file if it contains both audio and video.
If they are separate streams (or if you have multiple audiotracks like I do), your're stuck. It trims the video, not the audio at the start of the movie. It trims the audio and not the video at the end of the movie.

This problem has existed since day One and no service pack ever fixed it - odd as I think it is quite an important feature to get right.
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