I was wondering the exact same thing yesterday.  I ended up using Adobe premiere rush .. but it still had to re-encode the file again when it was done.  I wish there was a simple way to simply cut off the end or front of the video.  I thought an old version of Quicktime pro worked for that, but I didn't get it to work yesterday.

I decided to try out Quicktime pro (again), and it actually can do the job. To make the frame accurate selection, you have to select the time bar and use arrow keys. And then edit > trim to selection. And then just save as.

iFFmpeg does this as well. It has a passthrough mode and simply use the trim filter. You can enter the start and start frames quite easily. However what I don't understand is how you would know in this case or with QT that they aren't re-encoding.

Quote from: PeterChigmaroff on April 30, 2019, 21:32

Quote from: stockman11 on April 30, 2019, 13:43

I decided to try out Quicktime pro (again), and it actually can do the job. To make the frame accurate selection, you have to select the time bar and use arrow keys. And then edit > trim to selection. And then just save as.

iFFmpeg does this as well. It has a passthrough mode and simply use the trim filter. You can enter the start and start frames quite easily. However what I don't understand is how you would know in this case or with QT that they aren't re-encoding.

Re-encoding requires time, this in QT doesn't - it's instantaneous.

Interesting. In that case both methods work the same way.