MP4 Splitting Software

urahonky

I am going through my old 8mm camcorder footage and copying everything to my hard drive. I'd like to split out these videos (roughly an hour and a half long) into separate mp4 files. I usually use a tool called mp4 splitter but this video file is so long that the audio got disjointed somewhere in the split that everything is off by a second.

I don't care what it costs. I just want one that works well and makes it easy to trim a huge mp4 into smaller ones.

edit edit edit: Okay I uploaded the mp4 up to youtube to show a friend and the youtube video has 0 delay but watching the exact same file using VLC and Photos has a 850ms delay in the audio.

djmitchella

There's avidemux, or vidcoder. (both free, both let you say 'start here, end there', worth a try at least),

Hahnsoo1

I use: https://www.moo0.com/software/VideoCutter/

Website looks hella shady, but it works well and quickly.

The audio desync may be a codec issue, given that YouTube is playing it fine, but local players aren't (YouTube re-encodes the file into their own codecs to optimize for streaming video).

BlindZenDriver

Try LosslessCut
Works well for me, it is free and just works. More info here: https:https://en.wikipedia.org/wiki/LosslessCut

TelMarine

You'd could also most likely use ffmpeg, if you're comfortable with command-line utilities