I'm using both the Sony FX3 and Sony a7iv. With these cameras, it's possible to record proxies in camera.
I've been using Sony proxies for a few years and just started to notice this so this may be just be a Vegas 20 issue but when I swap the proxy out for the high quality clip, I do not get frame accurate swaps. The proxy and the high resolution clip is always one frame off. If I use the proxy clip to the very end and then swap out for the high res clip, the high res clip loops to the first frame. I thought maybe the issue was with Sony or the file types that it's recording but if I bring the same clips in to Premiere, they are frame accurate. I have no issues in Premiere.
I've tested this issues on 4 different computers (2 AMD and 2 Intel with different graphics cards) and this issue persists.
Is there a fix to this or is this a known bug? It's crazy annoying because my projects usually have hundreds of cuts so that means I have to go through and adjust hundreds of clips to make them frame accurate. Maybe there's a script or plug-in I can use for this?