GH5 External GH5 recording limitations?

filmguy123 said:
ohhhh... THAT is what I was mainly asking, thanks Thomas. Wanted to confirm if the GH5 would do it. That sucks! So only 60p/50p timebase modes external, no VFR support, and no support for the higher FPS like 120/180? Bummer :/
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I would wait for a GH5 user to chime in but that is what happens on my GH4. Kind of makes sense because how the heck would you shoot VFR if the display wasn't showing the video in realtime? VFR happens in the background and not on the display when you are shooting. If the display only shows the realtime version (24p) then thats all the external recorder will see as well. At least on the GH4 the HDMI is based on whatever the base framerate is in. when you select VFR it still works in the 24p timebase so thats what you get via HDMI.

Yeah bummer

HD 60p and 4k 60p on the GH5 is still pretty great for external recorder slow motion in post. Not as fun but its something at least. I know optical flow can be hit or miss but it does work a lot better when you start with a 60p source. Make sure you adjust the shutter as well. Optical flow gets confused by motion blur. If you want 60p to appear as if it was 180p you still want to shoot the 60p at the 1/360th shutter you would use when shooting 180p. This will make the optical flow work 100x better since there is much less motion blur and the slow motion will look as if you shot at 180fps. Optical flow only uses 2D motion vectors so things that spin in 3D space or have a lot of 3D overlapping will likely mess it up. Sometimes 2.5x slow motion is enough however so there is that to keep in mind.

Slow motion has always been a compromise and like 5k and odd photo modes will likely never work via external recording since external is based on HDMI video standards. raw to external is the only option since the SDI just acts as a data pump. Beyond that the best option for slow motion will be a raw camera that can record raw or ProRes internal so you don't have to worry about external. When it comes to a non raw camera however 60p is likely our limit. At least until somebody makes a camera that actually records 120p video and sends to the display 120p video and the HDMI standard used supports 120p video.

Still not sure such a camera exists which is why I'm scratching my head trying to figure out what the heck input the Flame supports for 120fps HD.
 
Oh it looks like the a7sii can do 1080p 120p. cool, didn't know that. Too bad Sony crippled the camera by making the HDMI output 8bit only. If one is concerned about having 10bit Panasonic is still the only option for a DSLR camera.
 
It seems too that all those external recorders, or at least the Video Devices and Atomos recorders are pretty hot running. I know the Ninja Inferno runs from 10 W to 33 W, so I'd definitely want to get to use it with higher capacity batteries. And you're right, none of the hdmi cameras output more than 60p from my research.
 
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