Large MP4 files are fine
You can upload MP4 files up to 1 GB. Because we only need the audio, the size of the video does not affect transcription speed; a 4K recording and a 480p recording of the same length take the same time to transcribe.
Screen recordings and tutorials
Recorded a tutorial with OBS, Loom or QuickTime? Transcribing it gives you a written version for documentation, a script you can tidy up for the next take, and subtitles for viewers who skim with the sound off.
Other video formats
Besides MP4 we accept MOV, MKV, WEBM, AVI, M4V, WMV, FLV, 3GP and MPEG. If your file plays in VLC, it will almost certainly work here.