fast it really depends i'll go with constant. quality now next up is the audio. you can change this depending on the bit rate you' YouTube·David Mbugua How to Burn Subtitles into Your YouTube Videos

Hardcoding or "burning" subtitles into a video ensures they are a permanent part of the image, making them visible on any device or player without needing extra files or settings. This process is essential for social media platforms like Instagram and TikTok that don't support separate subtitle file uploads. Essential Tools for Subtitle Burning

Depending on your workflow, you can choose between desktop software for privacy and power, or online tools for quick, one-off tasks. How to Burn In Subtitles to Video Using HandBrake - UPDATED