4GB limit, chunk download, what to use to demux and remux?

[dinkypumpkin]

MS wrote:
> So how do I fix the downloaded chunks? What Linux software do I use to
> demux my 1st chunk .mp4 file and subsequent chunks .mp4.flv files? And
> what software do I use to remux them together preferably allowing a
> little editing to get rid of the 5 min overlaps I've used for the
> chunks, and fixing the timecode? (If timecode the right expression for
> the time displayed when playing the video?)

I just use ffmpeg with -ss and -t to trim and re-mux the .flv files. 
I've found that trimming 5 mins from the beginning of each chunk created 
with --start is way more than enough to remove the wonky timestamps. 
I've used Avidemux to concatenate the trimmed and re-muxed chunks. 
mencoder worked as well, though I had to re-encode the audio. I tried 
concatenating with ffmpeg and mp4box, but I couldn't get the right 
incantations.  The splices are a bit rough, but I'm not too bothered 
about that for the competition sessions.  I made a proper edit of the 
opening ceremony, but I used a Mac - I can't say what your best Linux 
option would be.

Just to confirm: the 4GB issue is not a filesystem limitation per se. 
Even if your filesystem can support >4GB files, the stream still ends at 
4GB. I did a little debugging with rtmpdump, and for whatever reason the 
server appears to turn off the tap at 4GB. It's not worth the time to 
debug further. It will only be a problem again in another 64 years when 
the Olympics return. By then we'll all be streaming directly to our 
brains via McDonald's branded Olympics skull implants, right?