Avidemux

Absolute amazing! Just cut out a section out of an mp4 file without re-encoding (no loss of quality!) - excellent stuff!

The best free program I've used for cutting/splicing videos, and it can do it losslessly!

• Great for trimming and splicing videos losslessly (without reencoding)
• Can also re-encode/convert a video into different formats.
• Handles several video formats: mp4, avi, mov
• Works on both Windows and Mac

I don't like Avidemux. There are some little annoyances, like very bad, not reconfigurable shortcuts if you're using an non-english keyboard-layout. The preview is not scalable. You have to input the output name if you're saving cutted parts, again and again. It's not very stable (in Windows only?). It's having big trouble with converting mpeg2-streams, but it don't display any hints it's not able to convert it. So you have to wait hours of encoding too see the audio is asynchron, the resolution wrong or other problems. That's all points VirtualDub is much more comfortable! But Avidemux supports a lot of codecs and containers, while VirtualDub is very limited. I hope AviDemux will gain quality in the future, then it would be a really great tool.

Effective, powerful, perfect ... except the buttons could've gotten a bit of a polish.

1 star deduction for two aspects:

• An app like this should be distributed as a portable app for Windows. There's no reason at all for a Setup version other than, possibly, convenience for the developer (which I can totally understand).
• The button graphics could be improved a lot as they're too discrete and unintelligible right now.
• Not really an issue but, the name? Seems to derive from the .avi format, which is a bit misleading as it handles many other formats just as well. Suggest dumping the initial "A", making it "Videmux" or preferably "Videomux" if that name isn't taken by some other product, that is.

Great for simple video edits. Also can transcode.

Is able to direct stream copy without reprocessing. Is very easy to use. Excellent for simple cutting tasks

Use it daily to edit stream recordings and mpeg-ts, and works well.
Sometimes with streams there are PTS errors, which are usually fixable with ffmpeg as a pre-processing.
Really like the fact its cross platform.
Would like them to bring back the GTK build so that it works better in DE on Linux - QT apps can be made to look similar, but its never as complete as native GTK.