Interesting discovery today.  I use the BetaFPV VR01 FPV Goggles which have a 800x480 display which is a "15:9"  or 1.666 aspect ratio.  

My quad is the BetaFPV Meteor 75 Lite with an unknown camera resolution and aspect ratio, but I'm guessing it is 640x480 4:3 or 1.33 aspect.

The VR01 goggle DVR allows choosing recording formats of VGA, D1, and HD.  

 - VGA recording is 640x480 or 4:3 aspect 1.33 ratio, while 
 - D1 is 720x480 or 6:4 aspect 1.5 ratio.
 - HD records in 1280x720 or 16:9 aspect or 1.777 ratio.  

When I record in HD mode, the resulting 16:9 recording seems pretty close to the 15:9 image I see in the goggles, 
but the VGA 4:3 recordings look more true to life.

Which aspect ratio do you think is better for saving the history of flights.

I would always record at the native camera resolution so you are saving the footage exactly as the camera saw it and not manipulating it in any way during the actual recording process. In your case 640x480. It is always best to keep the source in it's original unchanged format IMO. If you need to do anything fancy like stretching or SuperView etc. you can always do that in post-editing.

(04-Sep-2020, 09:16 AM)SnowLeopardFPV Wrote: I would always record at the native camera resolution so you are saving the footage exactly as the camera saw it and not manipulating it in any way during the actual recording process. In your case 640x480. It is always best to keep the source in it's original unchanged format IMO. If you need to do anything fancy like stretching or SuperView etc. you can always do that in post-editing.

I grew up in the analog TV age, so one might expect I would have known right away that the 640x480 camera image is broadcast as an 800TVL analog video signal And displayed in my VR01 box goggles as a 4.3” 800x480 stretched rendering.

VGA lives on!