Combining MPG files

Jack S wrote on 1/14/2012, 8:25 AM

Hi. I've seen advice on this forum on how to combine mpg files using the DOS binary copy command. I find myself needing to do this now but I find that it doesn't work properly. I'm using the command:

copy /b file1.mpg+file2.mpg combined.mpg

When I play the file (combined.mpg) I find that a few seconds of the beginning of the second file is missing. I thought a binary copy would seamlessly tack the second file onto the end of the first one. Or am I wrong in this assumption?

Comments

musicvid10 wrote on 1/14/2012, 9:34 AM

The problem with concatenating long-GOP files is they do not get indexed.
VideoRedo Plus will take care of this for you and return frame-accurate cuts/joins.

Chienworks wrote on 1/14/2012, 10:29 AM

It only works with stream files like AVCHD and MT2S.

musicvid10 wrote on 1/14/2012, 11:14 AM

I thought it only worked reliably with intraframe compression.
;?)

Jack S wrote on 1/14/2012, 4:42 PM

Thank you guys for your quick responses.

Chienworks wrote on 1/14/2012, 5:05 PM

It will work fine with interframe compression, as long as those files have closed GOPs at the beginning and end and don't have extra header information.

musicvid10 wrote on 1/14/2012, 6:02 PM

Apologies if I'm mistaken, but isn't all 1080 HDV and AVCHD camcorder footage Open GOP?
Don't all Transport Streams contain extra header information?