CID to MTV Converter

Render CID font glyphs in MTV raytracing image format online

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Raytracer Ready

Get CID-keyed CJK font characters in MTV format — directly usable as texture inputs for ray tracing and 3D visualization software.

Simple Structure

MTV stores raw pixels with a minimal header. It is easy to parse and integrate into custom rendering pipelines and scripts.

Online Conversion

No raytracing tools needed on your device. Convertio handles the CID to MTV rendering entirely in the cloud.

How to convert CID to MTV

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose mtv or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your mtv file right afterwards

About formats

CID (Character Identifier) is a font architecture developed by Adobe Systems and specified in June 1993 to address the challenges of fonts containing very large glyph sets, particularly for CJK (Chinese, Japanese, Korean) scripts. Traditional PostScript fonts identify glyphs by name, which becomes impractical when a font contains tens of thousands of characters — a typical Japanese font may include over 20,000 glyphs. CID-keyed fonts replace glyph names with numeric identifiers organized by a character collection and ordering (such as Adobe-Japan1 or Adobe-GB1), dramatically reducing overhead for glyph access and subsetting. The architecture defines three PostScript font types: Type 9 (CID-keyed Type 1 outlines), Type 10 (CID-keyed Type 3), and Type 11 (CID-keyed Type 42/TrueType). A primary advantage is efficient handling of massive character sets — the numeric CID approach eliminates the memory and processing cost of maintaining thousands of glyph name strings. CID fonts also support sophisticated CMap resources that map encoding values to CIDs, enabling a single font to serve multiple encoding schemes (Unicode, Shift-JIS, Big5) without duplicating glyph data. The architecture integrates well with PDF subsetting, allowing documents to embed only the glyphs actually used. CID-keyed technology laid the foundation for CJK support in both OpenType and modern PDF workflows, and remains active in print production and document processing systems worldwide.
Developer: Adobe Systems
Initial release: June 11, 1993
MTV is a simple raster image format created by Mark T. VandeWettering for the MTV Ray Tracer, a ray tracing program released in 1988 as one of the early publicly available ray tracers distributed through Usenet. The format stores 24-bit RGB images with a minimal text header followed by raw pixel data. The header consists of a single line containing the image width and height as ASCII integers, followed immediately by the pixel data where each pixel occupies three bytes (red, green, blue) arranged in row-major order from top-left to bottom-right. The MTV Ray Tracer itself was significant in the history of computer graphics — distributed freely via the comp.graphics Usenet newsgroup, it introduced many programmers and students to the principles of ray tracing: ray-object intersection, reflection, refraction, shadows, and recursive shading. The MTV format was the program's native output, and its simplicity made it easy for users to write custom viewers and converters on whatever platform they had access to — a practical necessity in the fragmented Unix workstation landscape of the late 1980s. One advantage is extreme implementation simplicity: the format can be read in a handful of lines of code in any programming language, with no libraries, no compression algorithms, and no metadata parsing required — just read two integers and then read width x height x 3 bytes of pixel data. The format's historical significance in the computer graphics community provides another dimension — MTV files from early ray tracing experiments represent primary artifacts from the era when ray tracing transitioned from academic research to accessible software. MTV files are supported by ImageMagick and various legacy graphics tools.
Initial release: 1988

Frequently Asked Questions

Why convert CID to MTV?

MTV is a simple image format used by ray tracing software. Convert CID glyphs to MTV for use as texture inputs in 3D rendering scenes.

How do I open MTV images?

ImageMagick converts MTV to viewable formats. Raytracing software that supports MTV loads the format directly for scene textures.

What is the MTV format structure?

MTV stores raw RGB pixel data with a minimal header — making it trivially parseable by 3D rendering engines and custom processing scripts.

Is MTV suitable for detailed CJK glyphs?

MTV stores pixel data without compression, so every stroke detail in your CID characters is preserved for raytracing texture use.

Is CID to MTV free?

Yes — Convertio converts CID to MTV at no charge. Process your fonts online without any special software.