I've just done a couple of mkv to mp4 (no re-encoding) conversions...
Firstly, the source material is 23.976fps but for some reason the resulting mp4s show in DaVinci Resolve as being 24fps. Seems I have to set 23.976fps in the DSP in order to preserve 23.976fps. Any idea why this is?
Secondly, it seems odd to default the re-encoded AAC audio to a bitrate of 128kbps and needing to set that as a DSP.
As a feature request it would be great to be able to offer Avid DNxHD/DNxHR codecs and ProRes on Macs for QuickTime files.
Any updates planned soon?
Edit: I just looked at the files and compared to another made using mkv to mp4 and in the video section, the ones created with dBpoweramp display a Frame Rate mode: variable (with values for minimum and maximum) rather than constant of 23.976fps on the file made with MKV to MP4.