[snadal]

Surprisingly this is something that I have been thinking on for the whole 2023.

I myself am really bad at documenting findings while doing research or bugfixing so I started at recording all my daily activities for both replaying research sessions and also for my future me in case something is not clear in the docs.

Then I knew rewind and I was happy to know that I am not alone. This REM is the confirmation that this definitely has great use cases :)

I’d rather prefer the recording phase to be as lightweight as possible so I am recording the full mp4 video and plan to re-encode at a lower rate at night. But there is a compromise between recording quality and file size, I do not want end up with several Petabytes of videos.

What codec do you recommend for this use case? Lossy video codecs usually are very efficient for real images (just like the comparison between jpg/png) and I am sure a video format that is PNG based should be more efficient in space while preserving text quality.

I am very interested in read your thoughts about this.

[jasonjmcghee]

I used h264_videotoolbox which is supposed to be efficient for apple hardware. I'd like to get hevc_videotoolbox working.

rem does OCR in memory before streaming to ffmpeg. But it works on the screen grabs of the video anyway.

Yeah, it's a pretty different use case than other video. Curious too if there are "screen recording optimized" codecs.

Like non-contiguous diffing. Instead of "diff from last frame", "diff from frame X"- and/or some sort of quad tree hash lookup