Proxy defaults and auto-creation

Open Settings ▸ Performance to shape how Brolla handles heavy footage. Under Proxies, set the Proxy default resolution — 360p is fastest and smallest, 720p is balanced, and 1080p looks best. This is the quality Brolla uses when it builds previews for you.

Turn on Auto-create proxies on import and Brolla will quietly prepare previews for you. As it notes, this “Builds in the background — import never waits.” Pair it with the Auto-proxy trigger threshold: files this size or larger get a proxy, and you can set it anywhere from Every file up to 100 GB, so only your big clips get the treatment if you prefer.

Playback and scanning

Under Playback, the Playback mode decides what plays by default: Original files, Prefer proxies, or Last played resolution. If your machine struggles, Prefer proxies keeps things smooth.

Under Scanning you can adjust Scan concurrency (how many files Brolla works through at once) and Thumbnail quality. Higher settings look and feel snappier on a powerful Mac; lower settings are gentler on an older one.

Managing proxy storage

Proxies take up disk space, so Brolla gives you tidy-up controls under Proxy cache. Use Clear all proxy cache to free space whenever you like. With Clear proxy cache on quit you can have Brolla clean up automatically — choose Off, Clip, Editor, or Both. Here, Clip proxies are the previews for your saved library clips, and Editor proxies are the sources used in Trim & Export.