AVCHD to HCOM Converter

Extract Macintosh HCOM audio from AVCHD camcorder video

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Specialized Format

HCOM serves vintage Mac environments — extract compatible audio directly from AVCHD camcorder footage.

Cloud Processing

No specialized local software needed. Extract HCOM from AVCHD entirely through your browser.

Secure Handling

AVCHD uploads are deleted after extraction. HCOM files are removed from servers within 24 hours.

How to convert AVCHD to HCOM

1

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

2

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

3

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

About formats

AVCHD (Advanced Video Coding High Definition) is a high-definition recording format jointly developed by Sony and Panasonic for use in consumer and semi-professional camcorders. Announced in 2006, the format records H.264/MPEG-4 AVC video at resolutions up to 1920x1080 with Dolby Digital or uncompressed LPCM audio, stored within an MPEG-2 transport stream container. AVCHD was designed to work with a variety of recording media, including optical discs, hard disk drives, and solid-state memory cards, giving camera manufacturers flexibility in hardware design. The use of H.264 compression delivers superior image quality at lower bit rates compared to earlier recording standards like DV and MPEG-2, enabling longer recording times on the same storage capacity. AVCHD supports progressive and interlaced scanning modes, accommodating both cinematic and broadcast-style shooting. The directory structure follows a strict specification that includes playlist files for navigating recorded clips, making it compatible with Blu-ray players when recorded to compatible disc media. An enhanced version, AVCHD 2.0, added support for 1080/60p progressive recording and 3D stereoscopic video. The format remains widely used in the camcorder market and continues to be supported by major video editing applications.
Developer: Sony & Panasonic
Initial release: June 2006
HCOM is a Huffman-coded audio format from the early Macintosh era, designed to shrink digitized sound for distribution on floppy disks and bulletin board systems when storage was precious and modems were slow. The encoder takes 8-bit unsigned PCM input, computes a frequency table of sample-delta values, and builds an optimal Huffman tree that replaces common deltas with short bit sequences. Compression ratios of 2:1 or better were typical for speech recordings, a meaningful saving when a 3.5-inch floppy held only 800 KB. Files were distributed as Macintosh resource forks and played through utilities like SoundApp and the BinHex ecosystem that defined Mac software exchange in the late 1980s. The format supported sample rates up to 22.255 kHz, matching the output capabilities of original Macintosh sound hardware. Tools such as SoX retain HCOM decoding support, ensuring that archived recordings remain accessible decades later. HCOM holds three practical advantages for preservation work: lossless compression that recovers the original samples exactly, a self-contained Huffman table embedded in each file for dependency-free decoding, and historical prevalence across thousands of vintage Mac sound archives.
Developer: Apple Computer
Initial release: 1985

Frequently Asked Questions

Why extract HCOM from AVCHD?

HCOM is used in vintage Mac environments. Extracting from AVCHD provides camcorder audio in this specialized format.

What software handles HCOM?

SOX and specialized audio tools support HCOM format for processing, playback, and conversion.

Is HCOM widely used?

HCOM serves specific vintage Mac environments — a niche but important format for its target applications.

Will audio quality transfer?

Audio content from your AVCHD recording is accurately converted into the HCOM format during extraction.

Can I batch extract?

Upload multiple AVCHD recordings and extract HCOM audio from each simultaneously.