Step 1: Supply your MP4 files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted BMP files.
MP4 to BMP Conversion FAQ
What does the MP4 to BMP converter do?
+
It converts a MP4 file into BMP format.
Will background and colour fidelity be preserved?
+
Neither MP4 nor BMP carries an alpha channel, so the background renders as a solid colour and pixel colour data is preserved end-to-end.
Is the MP4 to BMP conversion reversible?
+
You can convert the BMP back to MP4 on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
Will the BMP be larger than the MP4?
+
Yes — lossless containers store every byte. Expect the BMP to be 3-8x the size of the MP4. The benefit is no further quality loss on editing or re-encoding.
Which frame of the MP4 do I actually get as a BMP?
+
The one you point at, not just the first. A timestamp picks a single moment out of the MP4; an interval setting walks the whole video and returns one BMP per step, delivered as a ZIP. The default grabs a frame a few seconds in rather than at 00:00, because the opening frame of a video is very often black. MP4 is ISO/IEC 14496-14, standardised in 2001 and derived from the same QuickTime box layout MOV uses.
How big will the BMP files be?
+
Larger than you might expect, because BMP keeps every pixel exactly rather than approximating. A 1080p still lands around 2-5 MB and a 4K still around 6-15 MB, so a long extraction run adds up quickly. That is the right trade when the images feed further processing, and the wrong one when they are going straight onto a web page. BMP usually stores completely uncompressed pixel rows with a small header, which is why it is so simple to parse.
Is there a file-size limit when converting MP4 to BMP?
+
Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several MP4 files to BMP at once?
+
Yes. Drop or pick multiple MP4 files in one upload — the converter processes them in parallel and returns a ZIP of the BMP results. There is no need to repeat the upload step per file.
What happens to my MP4 files after the conversion?
+
Uploaded files and BMP outputs are auto-deleted after a short retention window. We do not inspect, share, or train on user files. Direct download links are time-limited and tied to your session.
Where can I open a BMP file?
+
BMP opens in mainstream image viewers and editors. For web embedding, consider converting to PNG or WebP first since BMP is not always natively supported in browsers.
Do I need to install software to convert MP4 to BMP?
+
No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert MP4 to BMP?
+
No. MP4 to BMP conversion is free and works without an account. Signing in unlocks higher file-size caps, batch history, and API access.
