Audio / video playback offset

Hi,
When I import a video, I always have an offset (about 6frames) when I playback.

I tried many formats, after reading this :
https://www.steinberg.net/en/support/knowledgebase_new/show_details/kb_show/video-support-in-nuendo-and-cubase/kb_back/2020.html?tx_p77sbknowledgebase_pi1[productfamily]=1

On stop, it’s sync, but while playing the video TC and project TC and not sync.

Does anyone have this issue ? maybe more infos about codex or format we should use ?

Config :
PC i7 - RAM 8Gb

  • Cubase 7.0.6
    Quicktime 7.7.6 installed

Graphic Card
AMD Radeon HD 5450