Blender 2.77 crashes while rendering a video composition

Hey Guys,

It crashes @ 13000 or sometimes about 15000 frames!
I rendered from 15000 to END (18270) and now it crashes after 2000/3000 frames…

Normaly i rendered Video Projekt with 10 or 15 min & 20k Bitrate…
Once I’ve done a 1h clip… all fine!

1920x1080 / 60fps / GoP: 30 / H.264 (output & encoding) / Keep UI

Bitrate 14000
Rate min 10k
Rate max 20k

Sequenzer: Some ShadowPlay Clips… Jpg… Gamma Cross… wav…

Are the JPGs the problem? cause they come at the end @ 15200 frames but some of them blender is rendering and then crash… sometimes before the JPGs come crash…

I dunno whats the prob…
Cause my System (Core 2 Dou E8400 & 6GB Memory) isn’t at MAXIMUM…
Just 50 - 70 % CPU and 39 % RAM…

I have a Nvidia/ASUS GTX670 DirectCU II may driver updates a prob?

I deaktivated my LAN / I disconnected the cable… thought that helps like it do by other crashes… ^^

I have no clue…

@ MOD… pls delete this post… it is a doubble post… sorry for that!