My video sequence is exporting as still images

[Rohan5C1E]

Hey all, ive made a few videos now, mainly just drone footage clips with music, nothing crazy.

They have all worked nicely, all 4k at 60fps clips, and the sequence i use is set to 4k at 60fps, but for some reason the last video ive made, the first half of the video only renders/exports still images. Ive tried rendering the effects in the timeline and rendering the whole video in the timeline, but still the final export still only produces still images. the second half of the video seems to work fine, honestly lost as to whats happening. 

not sure if maybe my pc is just jamming up and cant handle it, but youd think a 2080ti gpu and a i7-4790K should be able to handle video production. 

thankyou all!

[Graeme Bull]

What are your render settings? What do you mean by still images as that's not quite clear. As in you have a video being rendered out but the video itself is just a still image of some frame in your sequence? Which frame is it, if that's the case.

[Rohan5C1E]

Gday Graeme, linking pics of the render/export settings to this reply. Sorry for the confusion, i should have been a bit more clear, apologies. So the video is a bunch of short moving drone clips, ive included screen shot of the timeline too. The first half of the video runs in the timeline video (albeit a bit gittery as my pc doesnt keep up, even on 1/8th quality) however when its exported, every clip in the first half of the video just comes up as a still image, like 1 keyframe of the the video clip. Ive tried alot of options, id rather not have to delete it all and re create it from scratch, thats why im here 😄

thankyou so much for your time!