[FFmpeg-user] splitting and concatenating file results in a different file

[Carl Eugen Hoyos]

> Am 31.10.2019 um 14:55 schrieb Jon Beyer <jbeyer at gmail.com>:
> 
> I'm trying to understand the basics of splitting a file on I frames and
> then concatenating the smaller files back together.

The fundamentals are that ffmpeg is a transcoding application, not a file archiver.
Your command lines should provide identical output for some input files, but without the command lines you tested posted together with the complete, uncut console output there is not much we can say (or guess).

Carl Eugen