MP4, MP3, and thumbnails: which format to pick

MP4 video

Best for editing, reposting (with rights), or offline viewing.

Quality depends on the source — we cannot exceed the original resolution.

MP3 audio

Useful for voice checks or podcast clips — you still need rights to the underlying content.

Thumbnail

Helpful for storyboards or your own YouTube thumbnails — do not use others’ art without permission.