Speed problems when making MKV

[moviemaniac]

Hi guys!

I've been using this great application for a few days now, however I have noticed a small speed problem when making MKVs. When I copy files manually from my external BD drive (Liteon ihes108 in an external enclosure) I get maximum speed (about 20MB/s when copying to an external hard drive). However, when I rip a BD to MKV withe MakeMKV I only get abour 5MB/s which is painfully slow. I'm on Ubuntu lucid (10.04) x64. Any suggestions?

thanks!
mm

[mike admin]

what happens with cpu usage?

[moviemaniac]

CPU usage is very low, I didn't check the exact usage, but it was maybe like 5-10% (C2D E8235 2.8GHz)

[mrbass]

just make sure it is connected straight to your usb port on computer rather than a hub or keyboard usb port.

[moviemaniac]

I just tried that and it didn't change anything. I can copy via Nautilus or Thunar with max. USB 2.0 speed, but MakeMKV still only copies with 0.9-1.2x speed (about 5MB/s) with about 15% CPU usage.

[skittle]

iirc that liteon is riplocked, you need to use an patched firmware

[moviemaniac]

That's not it either (at least not the whole problem) - under OSX using MakeMKV and the very same drive I can rip with 2.5x speed (about 10MB/s).

[mike admin]

Please try the latest 1.5.0 version and check if it got any faster. It has improvements in linux IO code.

[moviemaniac]

Thanks very much - I just tested it and the ripping speed increased from reading at about 1x speed to about 2,5-2,7x speed at which point it maxes out one of my two cpu cores with I/O load. So thanks very much for the fix! (*looking for my credit card now* )