Shrinking X265 [TRUSTED]

If your current file was encoded at CRF 18 (very high quality, large size), re-encoding at CRF 24 can often reduce the file size by 30-50% with negligible visual difference on a standard TV. 3. Leverage "Slow" Encoder Presets In the world of compression, time equals space.

For x265, a CRF between 20 and 24 is the "sweet spot." shrinking x265

To be fair, aggressive x265 encoding has legitimate uses: If your current file was encoded at CRF