I use ffmpeg to do some automatic trimming and to force encode the video as top-field encoded. My capture hardware lies and says it’s deinterlaced, when the vid

I use ffmpeg to do some automatic trimming and to force encode the video as top-field encoded. My capture hardware lies and says it’s deinterlaced, when the video is not. I’ve tried deinterlacing with it but found best compromise quality / effort / speed wise using Apple’s Compressor and it’s deinterlacing algorithm. I don’t know why I’m unable to override the capture in AVFoundation; maybe someone smarter than me can tell me how to do this (I suspect it’s not possible). I use QuickTime to go through the material and do the splits / manual trimming. This happens often as one tape was used for multiple events and sometimes TV content as well.