MP4 to BMP Converter

Convert MP4 to BMP Online

Pull a still frame out of an MP4 video and save it as a BMP — an uncompressed Windows bitmap that stores every pixel exactly, with no JPEG-style artifacts. This is frame extraction, not playback: you pick a moment in the clip (or grab a run of frames), and each one comes back as a standalone bitmap. BMP keeps the pixels pristine, which is why it suits machine-vision input, frame-by-frame inspection, and legacy Windows tools that expect raw bitmaps — at the cost of large files, since there is no compression.

How to Convert MP4 to BMP

1. Upload Your MP4 File: Drag and drop or click "+ Add Files" to load an MP4 (M4V is also accepted). Files are uploaded over an encrypted connection and deleted automatically a few hours after conversion.
2. Choose Frame Selection: Pick Specific Frame and set Time (seconds) to grab one still at an exact moment (e.g. 2.100), or pick Multiple Screenshots to extract a series of frames across the clip.
3. Set Quality and Resolution (Optional): Choose a Quality Preset, and under resolution use Keep original, a Preset Resolution, Resolution Percentage, or an exact Width x Height to downscale the bitmap.
4. Convert and Download: Click "Convert" and download your BMP. Multiple frames arrive as separate files or a ZIP. No sign-up, no watermark.

BMP vs PNG vs JPG for Extracted Frames

All three store the same frame; they differ in size and fidelity. BMP is the largest because it applies no compression — useful when a downstream tool needs raw pixels, wasteful otherwise.

Want a smaller file for the same frame? Use MP4 to PNG for lossless output or MP4 to JPG for a compact share-ready still. Already have BMPs and need them smaller? Run them through BMP to PNG.

Frequently Asked Questions

Why is my BMP so much larger than the MP4 it came from?

A BMP stores every pixel uncompressed, while an MP4 uses inter-frame video compression that only records what changes between frames. A single 1920×1080 24-bit BMP is roughly 6 MB regardless of content (width × height × 3 bytes, plus a small header), whereas an entire short MP4 might be smaller than one decoded frame. That is the trade-off for keeping pixels exact — if size matters, convert to PNG (lossless, smaller) or JPG (lossy, smallest) instead.

Can I extract one specific frame instead of the whole video?

Yes. Choose Specific Frame and type the moment you want into Time (seconds) — for example 2.100 for 2.1 seconds in. The converter decodes the frame nearest that timestamp and returns a single BMP. To grab several frames instead, switch to Multiple Screenshots.

What bit depth and color does the BMP use?

The BMP file format supports 1, 4, 8, 16, 24, and 32 bits per pixel. Frames from a normal color video are written as true-color bitmaps so the full color range of the source is preserved; lower bit depths exist mainly for palette-indexed or monochrome bitmaps and are not needed for video stills.

Does BMP support any compression at all?

By default, no — that is why BMP files are large. The format does allow an optional lossless run-length encoding (RLE) scheme for 4-bit and 8-bit images, but 16-bit and 32-bit bitmaps are always stored uncompressed, and RLE only helps on simple graphics with large flat areas, not photographic video frames. For real size savings on a still, PNG's DEFLATE compression is the better choice.

Why would I use BMP instead of PNG for a video frame?

In our testing, BMP and PNG decode to byte-identical pixels, so for most uses PNG wins on size. BMP earns its place when a downstream tool wants raw, header-light bitmaps with no decompression step — older Windows/GDI software, some machine-vision and image-processing pipelines (OpenCV, MATLAB), and embedded systems that read uncompressed frames directly. If nothing in your workflow specifically requires BMP, PNG is the more practical lossless option.