How can I split a .mp4 in two?

[MadDoc]

I have a bunch of .mp4 files (DRM free). Each file comprises two episodes of a kids TV show. I would like to simply split the file in two without re-encoding. What's the best way to do this? Preferably with a GUI (as I need to skip to the correct part of each file to find the divider between the two episodes).

Thanks,

 

[oriz]

Hey MadDoc,

You can trim a clip with Quicktime (Edit -> Trim or CMD+T). You have to do it twice for each half. Another Option I have used in the past was MPEG Streamclip, however it is been a while, since I last used this software, so I do not know, if the app is still compatible with Yosemite or El Capitan. A third option would be MP4Tools.

 

[kohlson]

An excellent discussion of the issues around cutting h264 files here: http://forum.videohelp.com/threads/272597-cutting-h264-video-without-re-encoding

 

[MacUser2525]

Avidemux will do it or ffmpeg on the command line is another option.

 ffmpeg -i double_file.mp4 -ss 00:00:00 -to 00:24:57 -vcodec copy -acodec copy single_episode.mp4

 

[MadDoc]

Thanks for these tips. Very helpful.