Keep Quality

Upload without the quality hit

Stops the platform from re-encoding your video. Your picture and sound are copied byte for byte — nothing is re-encoded, nothing is uploaded anywhere. It all happens in this tab.

Drop a video here

or click to choose · MP4 or MOV · stays on your device

What it actually does

Nothing here can improve a video's quality, and it does not try to. Every frame that comes out is the identical frame that went in — the tool proves this to itself by hashing the video bitstream before and after. What it changes is one number in the file's header.

  1. The file stops saying how long it is

    An MP4 records its duration in two places: once per track, and once for the movie as a whole. This sets the movie-level figure to an "unknown" value while leaving every per-track duration correct, so players and editors behave normally. An ingest pipeline that reads the movie header to work out a bitrate gets no answer — and a pipeline that cannot size up your video appears not to re-encode it.

  2. The editor's fingerprints come off

    Editing apps stamp exports with a provenance block: which app produced the file, whether it has already been re-encoded, the exact moment it was exported, and a list of which AI features the edit used. All of it is removed, including the timestamps hidden in the track headers.

  3. The container is rebuilt cleanly

    The header moves to the front of the file and the chunks are re-interleaved. Edit lists are preserved, so audio sync and the first frame stay exactly where they were. The result is a valid MP4 in every respect except the one number above.

Two things worth knowing

Stripping the metadata also removes the flags that declare which AI features an edit used. If your video used AI voice, image or music generation, that disclosure goes with it — which is a platform-rules question, not a technical one. Turn the option off in Advanced if you would rather keep it.

This was measured against one platform at one moment. Ingest pipelines change, and the behaviour it relies on could stop working without notice. If your uploads start coming back soft again, the trick has probably been closed rather than your file being wrong.