MKV to IMA Converter

Extract IMA ADPCM audio data from MKV video online

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Embedded Systems Format

IMA ADPCM is standard in embedded audio. Extract MKV audio in a format microcontrollers and game engines can decode efficiently.

Compact and Fast

IMA achieves 4:1 compression over raw PCM. Extraction from MKV is near-instant, and the output files are very manageable in size.

Private Processing

All uploaded MKV files and converted IMA outputs are automatically deleted from convertio.tools servers for complete privacy.

How to convert MKV to IMA

1

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

2

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

3

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

About formats

MKV (Matroska Video) is an open-standard multimedia container format developed by the Matroska project, which announced the format in December 2002. Named after the Russian matryoshka nesting dolls, the format is built on the Extensible Binary Meta Language (EBML), a simplified binary variant of XML that provides a flexible and forward-compatible structure. MKV can hold virtually unlimited numbers of video, audio, and subtitle tracks within a single file, supporting codecs from H.264 and HEVC to VP9 and AV1 for video, and AAC, FLAC, Opus, and DTS for audio. A standout feature is comprehensive subtitle support, handling formats from simple SRT text to complex ASS styled subtitles and bitmap-based PGS tracks from Blu-ray discs. MKV also supports chapter markers, attachments (such as fonts needed for styled subtitles), and tagging metadata, making it one of the most feature-rich containers available. The open specification) ensures that any developer can implement MKV reading and writing without licensing fees, which has driven widespread adoption across media players, streaming tools, and encoding software. The ability to encapsulate virtually any codec combination in a single, well-organized file has made MKV the preferred container for high-quality video distribution, archival, and personal media libraries.
Developer: Matroska
Initial release: December 6, 2002
IMA ADPCM (Adaptive Differential Pulse-Code Modulation) is a compact audio coding standard published by the Interactive Multimedia Association in 1992, addressing the need for a lightweight, royalty-free compression scheme suitable for early multimedia PCs and embedded devices. The algorithm encodes each sample as a 4-bit nibble representing the quantized difference from the previous sample, while an adaptive step-size table adjusts dynamically to track signal amplitude — delivering a fixed 4:1 compression ratio over 16-bit PCM. Decoding requires only an integer multiply-add per sample and a small lookup table, so even modest 1990s CPUs could decompress in real time without dedicated DSP. The format became deeply embedded in the multimedia landscape: Microsoft adopted it as a standard ACM codec for WAV files, game engines relied on it for sound effects, and telephony equipment used it for voice storage. Its advantages are enduring: predictable 4:1 size reduction simplifies buffer allocation in constrained environments, the decode path runs on 8-bit microcontrollers, and the open specification made IMA ADPCM one of the most broadly implemented audio codecs in computing history.
Initial release: 1992

Frequently Asked Questions

Why convert MKV to IMA?

IMA ADPCM is a compact audio encoding used in embedded systems, game audio, and telephony. It provides 4:1 compression over raw PCM data.

What opens IMA files?

SoX and raw audio importers handle IMA ADPCM data. Embedded firmware and game engines that support IMA ADPCM also process it directly.

Is IMA headerless?

Yes — IMA is a raw data format without metadata. You need to specify sample rate and channels when importing the data into other tools.

How does IMA compare to PCM?

IMA ADPCM compresses audio to roughly 25% of the original PCM size while maintaining acceptable quality — ideal for resource-limited systems.

Is the conversion free?

Yes — convertio.tools offers free MKV to IMA conversion. No signup required for standard conversions.

MKV to IMA Quality Rating

5.0 (1 votes)
You need to convert and download at least 1 file to provide feedback!