No Hardware encoding for H264 and HEVC on Apple Silicon

[dalisoft]

macOS version: 12.6.1 (21G217) (Apple Silicon)
Kap version: 3.6.0 (3.6.0.1846

Steps to reproduce

1. Download, start, capture
2. Try to export and see Activity monitor

Current behaviour

Kap-No-HW.mp4

Even #970 (comment) does not help

Expected behaviour

No all CPU cores loading and using GPU or hardware encoders for this kind of task

Workaround

[jakearchibald]

Although ffmpeg can use Mac hardware encoders, and they're faster than software encoders, they also produce much worse results.