To achieve “high quality” (no re-encoding loss), avoid transcoding video whenever possible. Use:

If you must "burn" the English subs in, use a High Profile setting to prevent pixelation around the text edges.

Set your CRF between 18 and 22 . A value of 18 is technically "visually lossless," ensuring that fine details in the "jur153" animation or cinematography aren't blurred. Subtitle Integration: