This mirrors the old physical film process where editors used a "workprint" (a cheap physical copy) to make cuts, protecting the original master negative from damage. How to Produce "Paper" (Proxies)
Many professional cameras (like Sony) can record low-res proxy files onto a secondary SD card simultaneously with the high-res footage. FILMY PROXY
In modern filmmaking, cameras often record in massive resolutions (4K, 8K) and "heavy" codecs that can cause computers to lag or crash during playback. To fix this, editors create : This mirrors the old physical film process where