There are no such restrictions when decompressing or recompressing a video stream. Whenever VirtualDub detects a violation of this rule it automatically adds in frames back to the previous key frame to fix the problem. This rule is imposed by the way video is compressed. Essentially, any blocks of video you remove have to end right before a key frame (shows up as ), although they can begin anywhere. Specifically, you can only remove a non-key-frame (shows up as beside the timestamp window) if you also remove the frame before it. How come parts that I've deleted get stuck back in the file? When editing in Direct video mode, there are some limitations on where cuts can occur. Editingįor more tips on capturing, see documentation on editing. And no, I won't tell you where to get one. You need to install a better one to get higher bitrate support. How do I get VirtualDub to encode 128Kbps MP3? The MP3 encoding capability you're seeing isn't in VirtualDub - it's being provided by an audio codec you have installed in your system. VirtualDub's MPEG-1 parser is intolerant to errors compared to its AVI parser, so unfortunately there is no easy solution to the latter problem.
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