Appending h.264 video streams

[bairradino]

I have an AC3 audio steam of, let's say, 60 minutes.
I have also two H.264 video streams of, let's say 45 minutes and 15 minutes.
The question is: How can I append the two video streams for later muxing with tha audio stream, in order to get a final m2ts file?

[roozhou]

If you have two raw h264 streams, type in cmd:
copy /b 1.264 + 2.264 3.264
That's it

[Snowknight26]

That'll probably only work if they have the same CodecPrivate length.

[bairradino]

If I understood...
You mean that if I have the files "x1.m4v" and "x2.m4v" (note the extensions) I must type in the WinXP command (or in TsMuxeR?)copy /b x1.m4v + x2.m4v x3.m4v beeing "x3.m4v" the final file) ?

[Dark Shikari]

That'll probably only work if they have the same CodecPrivate length.No, it'll only work if the two have identical SPS and PPSs, or the second uses a different SPS-ID.

Otherwise, you have to re-encode.