RESET_9999 wrote: ↑Fri Feb 21, 2020 8:05 pm
built_to_chill wrote: ↑Fri Feb 21, 2020 6:23 pm
Hi all - I'm finding the MP4Box command runs extremely slowly (I dare say running in movie realtime). This is for adding the LPCM to the dual layer MP4.
It seems to hit a bottle neck when it comes to add the LPCM (after apparently reading in the two video layers normally).
Is this normal? Looks like it might take hours...
it all depends on the speed of your HDD / SSD.
With my PCI-E M2 SSD, it takes less than 10min building the final MP4 with LPCM
I'm doing this on a SATA connected SSD. I'd be surprised if that's the bottle neck, but perhaps so.
I'm more inclined to think something is actually wrong. The rate it's going it would take 18 hours, and the one of the CPU cores would be at 100% for the duration (a core i3). Which is obviously dramatically different to 10 mins.
Incidentally I do also have an M2 SSD on the system, so I'll see if it's quicker there, and try a different file.
Edit: Also, I've found I can't use the option ":rate=0" after the video mp4, when using mp4box. It throws an error - perhaps because it's the linux version. I don't suppose you know what that does and if it could be the issue?