- Posts: 338
- Joined: Thu Feb 25, 2016 11:26 pm
MP4 is dicey for timecode support, and I've seen problems like this before in other kinds of software. One trick with workflow is that you have to do a thorough test before committing to a proxy format, because otherwise you can drive right off a cliff with issues like this.
My suggestion would be not to use MP4 but instead use something like DNxHD36 or ProRes LT, both of which are decent intraframe codecs that support accurate jogging and better frame-by-frame playback with embedded timecode. They're also proven to work pretty well on most Windows and Mac editing software packages. I don't use any Long-GOP format like MP4 or H.264 for anything except as a quick & dirty online viewing tool for dailies or something like that.
There are exceptions like HEVC, which is a very high-quality H.265 format used by Sony and some others, but that's at a much different level.