How to Transcribe an MP4 Video to Text

The first question people ask about video is whether they need to pull the audio out first.

No. Upload the video.

Why extracting audio is usually a step backwards

Extracting the audio track yourself means picking an export setting, and most people pick one that re-encodes. You end up with a compressed copy of a track that was already compressed inside the container, which is slightly worse than what you started with and took twenty minutes.

Upload the MP4. If you have a MOV, WebM, MKV or AVI, upload that instead — the container matters less than people expect.

The picture does not help, and that surprises people

Transcription works from sound. The video of somebody's face is not used to read their lips or to work out who is speaking.

Which means a video recording gets you nothing over an audio one except the thing that actually matters: video is usually recorded in worse conditions. A phone filming across a room is further from every mouth than a phone lying on the table would be.

If you are recording something specifically to transcribe it later, record audio close rather than video far.

Long recordings and where to cut

Videos tend to be long — a lecture, a two-hour service, a full webinar. Two things help.

Trim the front. Recordings almost always open with several minutes of setup, greetings and technical fiddling. Cutting it costs you nothing and shortens what you transcribe.

Split genuinely separate sessions into separate files. A day-long workshop with four distinct sessions is more useful as four transcripts than one enormous one, because you will want to find things by session later.

Subtitles

If the destination is subtitles rather than a document, the transcript is still the intermediate step: get the text right first, fix the names, then export.

The thing that makes subtitles bad is almost never timing — it is the words. A subtitle file built from an unreviewed first pass will confidently misspell every proper noun in your video, permanently, on screen.

Multi-speaker video

Panels, interviews and meetings need speaker labels or the transcript is unusable. Speaker diarization explains how that works and where it struggles — overlapping speech being the main one, which is exactly what panels are made of.

Getting started

A free account includes transcription minutes each month with no card. Sign up and put a real video through — ideally one where several people talk, since that is where the difference between tools shows up.