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View Full Version : join just h264 video files.


woah!
26th October 2005, 05:30
what i wanted to do was split a mpeg2 file in half first, then encode each piece with the exact same profile on 2 computers (1 piece on each comp) and then afterwards join them back together. this way i can half my encode time. the aac audio file would be 1 file as i would use the complete mpeg file for that.

sounds weird i know but it will help me out if i can :0

i can get them to join to the end result is the correct size but the time is wrong. its the same length as the 1st part i want to join


heres the joining log:

C:\>"MP4Box" -cat p1video.mp4#3 -cat p2video.mp4#3 output.mp4
IsoMedia import - track ID 3 - Video (size 512 x 384)
Appending file p1video.mp4#3
IsoMedia import - track ID 3 - Video (size 512 x 384)
Appending file p2video.mp4#3
Saving output.mp4: 0.500 secs Interleaving
Writing: |=========== | (56/100)


the first clip is 34.29 long and 199meg in size, and the joined clip is 400meg in size with the same time of 34.29 :(




edit:

so i have a file now that has 2 video streams inside the 1 file. but they are not 1 long stream but the 2 short streams and i can pick to watch 1 or the other. not really a "join" function to me tho...

MeteorRain
26th October 2005, 13:54
try join on raw level

bond
26th October 2005, 21:21
the first clip is 34.29 long and 199meg in size, and the joined clip is 400meg in size with the same time of 34.29 :(

so i have a file now that has 2 video streams inside the 1 file. but they are not 1 long stream but the 2 short streams and i can pick to watch 1 or the other. not really a "join" function to me tho...i assume you didnt use exactly the same options for encoding the two parts, which means you cant join them together (also not the raw streams)

if you think thats not true, can you plz upload two small snips of the two files somewhere so i can test it myself