I have a H264 MP4 clip which I would like to change the aspect ratio on (but not re-encode). It's a 16:9 clip, and I'm gonna edit it to 4:3. I have read that you can use MP4Box but I don't understand any of it. So I tried YAMB, changed the aspect ratio, but it doesn't made any difference. I've also read that MP4Box is a "command-line app", what is this? When I open "MP4Box.exe" it's open in less than a second, then it closes.
How does MP4Box work, and how do I edit my clip?
Sorry if my english is wrong...
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