I need to combine a movie without sounds and a MP3 file. How can I do it in OS X? I have Adobe After Effects but it is not at all intuitive to use -- or better I need to find some button to render the sounds with the movie but now no time -- is there some easy fast-to-use software for OS X to combine sounds and videos?
iMovie is the obvious choice. It's very easy to use and fairly reasonable in price. You might have it already if you have a newish mac or else it's $15 I think.
ffmpeg supports combining video and audio without re-encoding:
ffmpeg -i input.mov -i input.mp3 -c copy -map 0:0 -map 1:0 -shortest output.mov
-map 0:0 means input file 0, stream 0.
-c copy copies video and audio codecs.
-shortest makes the combined file as long as the shorter file.
Adobe After Effects
I remembered now how to do it in After Effects:
Composition > Add to Render Queue and then click
lossless and put the cross to the audio thing. Now specify the target and then hit
A good video here how to do it.