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I tried to cut out some frames in direct stream copy mode, and VirtualDub put them back in!?
You deleted a frame, but didn't delete the non-keyframes after it.
A keyframe is a frame that can be decoded on its own; a non-keyframe, or delta frame, is a difference from the previous frame and cannot be decoded if the frame before it is missing. VirtualDub always plays it safe and makes sure that all frames that you don't delete are decodable. This means that any non-keyframe that you include will force inclusion of any frames before it, back to and including the previous keyframe.
Below the position slider and to the right of the motion buttons, there is a timestamp counter that shows the current position:
Notice the [K] at the end -- this is the current frame type. K indicates a keyframe; nothing indicates a delta frame; [D] indicates a dropped frame, which is another type of non-keyframe. Basically, all you have to do is ensure that when you delete a segment, you end the delete right before the next keyframe. You can seek between keyframes by holding SHIFT when dragging the nub or clicking on the forward and backward buttons with the yellow key icon.
Så rent faktisk kan det nok ikke lade sig gøre med virtual dub...
Øv - ellers mange tak for dit store arbejde...
Med venlig hilsen
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