https://hitfilm.com/express https://hitfilm.com/express may offer enough polish. I often use ffmpeg to do this, but I don't think it meets any of the requireme

https://hitfilm.com/express https://hitfilm.com/express may offer enough polish. I often use ffmpeg to do this, but I don't think it meets any of the requirements. Alternatives: https://news.ycombinator.com/item?id=15235466#15236794 https://news.ycombinator.com/item?id=15235466#15236794 (2017)