Author Topic: AVITrimmer doesn't trim  (Read 11228 times)

Offline Dmitry Vergeles

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AVITrimmer doesn't trim
« Reply #2 on: May 13, 2007, 12:05:09 PM »
Hello Stevejluke,

Thank you for the info.

AVI trimmer operates with K-Frame accuracy.

Video sequence encoded usually consists of groups of pictures (GOP). GOP consists of Key frame (that is first one in GOP) and delta frames. Key frame is encoded independently as a statical picture but delta frames are predicted from K frame and can't be decoded without K frame.

Thus to provide an user fast and a video quality lossless video trimming, the Video Splitter performs trimming tasks with K Frame accuracy.
That means that all output fragments will be started with K frame.
Regards,
Dmitry Vergeles
Solveig Multimedia

Stevejluke

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AVITrimmer doesn't trim
« Reply #1 on: May 09, 2007, 02:32:34 AM »
Hey all,

I just DLed AVITrimmer and tried to use it.  On simple trims, trying to remove first couple frame, last couple frames, and/or a few frames in the middle, the trimmer does absolutely nothing.

On more complex trims where I try to cut multiple scenes what happens is it plays the entire AVI through, and those scenes I wanted to keep are played twice (instead of the scenes I cut being dropped).

This may be related to an error I get when I open my AVI which says:
Cannot find audio decoder for preview (), but trimming should be Ok
The movie has no Audio associated with it.

I have AVITrimmer 1.4, the movies are Video (TSCC) encoded (made from SnagIt - TechSmith)

Any help would be appreciated