BMP vs DPX — Differences, File Size & When to Use Each

BMP vs DPX

Ein detaillierter Vergleich von BMP Image und Digital Moving-Picture — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.

BMP → DPX umwandeln DPX → BMP umwandeln

BMP

BMP Image

Raster & Vector Images

BMP is an uncompressed raster image format native to Windows. Files are large but preserve exact pixel data with no compression artifacts. Rarely used on the web due to file size.

Über BMP-Dateien

DPX

Digital Moving-Picture

Raster & Vector Images

DPX (Digital Picture Exchange) is a SMPTE standard file format for digital intermediate and visual effects work. It stores per-frame image data with rich metadata for color management and is widely used in film post-production pipelines.

Über DPX-Dateien

Vorteilsvergleich

BMP Vorteile

Dead-simple format — trivially easy to read and write.
Lossless and uncompressed — perfect bit-exact pixel storage.
Universally supported in Windows applications since 1985.
Supports 1, 4, 8, 16, 24, and 32-bit color depths.

DPX Vorteile

Industry-standard archival format for film.
Logarithmic color encoding preserves film look.
Lossless — no generation degradation.
SMPTE standardized (SMPTE 268M).
Every VFX and color-grading app reads and writes DPX.

Einschränkungen

BMP Einschränkungen

Enormous file sizes — no meaningful compression in typical use.
Not a web format — browsers support it but nobody serves BMPs over HTTP.
No metadata support (no EXIF, no ICC profile in practice).
Multiple header versions mean "a BMP" is ambiguous — parsers must handle several variants.

DPX Einschränkungen

No compression — file sizes are enormous.
Not a display format — requires color-managed pipelines.
Gradually superseded by OpenEXR in modern VFX.
Overkill for anything but professional film work.

Technische Spezifikationen

Spezifikation	BMP	DPX
MIME type	image/bmp	image/x-dpx
Extensions	.bmp, .dib	—
Compression	None (typical); RLE 4/8 bit (rare)	—
Color depths	1, 4, 8, 16, 24, 32 bits per pixel	—
Byte order	Little-endian	—
Extension	—	.dpx
Standard	—	SMPTE 268M
Bit depths	—	8, 10, 12, 16 bits per channel
Color encoding	—	Logarithmic (Cineon-style) by convention

Typische Dateigrößen

BMP

Small icon (32×32) 4 KB
Screenshot (1920×1080) ~6 MB
4K image (3840×2160) ~25 MB
Scanned A4 at 300 dpi ~25 MB

DPX

2K DPX frame (2048×1556, 10-bit) ~12 MB
4K DPX frame (4096×3112, 10-bit) ~50 MB
90-min feature at 4K DPX sequence ~6 TB

Bereit zum Umwandeln?

Wandle zwischen BMP und DPX online um, kostenlos und ohne Installation. Verschlüsselter Upload, automatische Löschung in 60 Minuten.

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Häufig gestellte Fragen

BMP (Bitmap) is a raster image format developed by Microsoft for Windows. It stores images with no compression by default, resulting in large file sizes but pixel-perfect quality. It has been part of Windows since version 1.0.

BMP (Bitmap) is a raster image formato developed by Microsoft para Windows. It stores images com no compressão by default, resulting in large tamanho do arquivos mas pixel-perfect quality. It has been part of Windows since version 1.0.

BMP files open in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, and virtually any image viewer. All Windows applications support BMP natively.

BMP arquivos abrir in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, e virtually any image viewer. All Windows aplicativos support BMP natively.

PNG is better than BMP in almost every scenario since it provides lossless compression (smaller files), transparency support, and wider cross-platform use. BMP is mainly relevant for legacy Windows applications.

PNG is melhor que BMP in almost every scenario since it fornece sem perdas compressão (smaller files), transparência support, e wider cross-platform use. BMP is mainly relevant para legacy Windows aplicativos.