It might be ok actually... I just switched vcodec again, to mpeg4 this time, qscale:v 1, and and it is a 3 minute job for 40mb vid that looks ok on monitor.
I think the libx264 codec is (was) the problem.
Again bread & butter stuff no doubt for those more experienced, useful learning (and research) here.
Slightly sad I can't justify getting a Pi4 for this now though...
It might be ok actually... I just switched vcodec again, to mpeg4 this time, qscale:v 1, and and it is a 3 minute job for 40mb vid that looks ok on monitor.
I think the libx264 codec is (was) the problem.
Again bread & butter stuff no doubt for those more experienced, useful learning (and research) here.
Slightly sad I can't justify getting a Pi4 for this now though...