**Bitrate** plays a crucial role in determining upload quality: The compression algorithm applied to video determines the average rate at which bits are transmitted for the material.
Lower bitrate implies lower quality and vice versa.
**Format** and **codec** also play important roles in video quality.
YouTube favors specific formats for best upload results, like MP4 (https://support.google.com/youtube/answer/163453).
**Quality settings** can either enhance or compromise video quality, depending on settings made before upload.
Keep in mind that you should adjust resolution, bitrate, and frames rates for optimal performance, as you would in ensuring the quality of your YouTube uploads