Frame rate drops, jerky video when recording multiple videos with GOS Camera

[cullumsmith]

I've used the default GrapheneOS Camera for about 4 years with no issues. Starting a few months ago, I started having having the following issue recording video with the GOS camera:

I can capture one video without any problems. But capturing subsequent videos results in multiple lags/jerks/frame skips. The issue is still present on the recently released GOS camera version 75 (if anything, its actually a bit worse in this version).

The issue does not happen using Google's Pixel Camera app from the Play store.

What appears to be happening is that the GOS Camera is performing some kind of lengthy post-processing after I end the capture, and the CPU becomes too busy to take subsequent videos (unless I reboot or wait a long time (say, a few minutes) between video captures).

I can lessen the problem by switching to a lower resolution, but the problem never goes away entirely.

How I can reproduce:

Take multiple ~15 second videos, one after the other (record, stop, record, stop, etc). After the 3rd/4th attempt, the resulting video has numerous lags where the video freezes for a few seconds. After the 5th/6th attempt, video capture almost stops working entirely. The phone becomes quite hot.

This happens for me on my Pixel 7 and a brand new Pixel 8a.

I can lessen the problem by switching to a lower resolution (1080p) and disabling image stabilization, but the problem never goes away entirely.