MPEG-2 to SD2 Converter

Get Sound Designer II audio from MPEG-2 video quickly

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

Pro Tools Legacy

SD2 is the original Digidesign format — extracting from MPEG-2 creates audio for legacy Pro Tools sessions.

Fast Extraction

Audio extraction skips video processing — your MPEG-2-to-SD2 conversion finishes in seconds, not minutes.

Secure Files

MPEG-2 uploads are erased immediately after conversion. SD2 outputs are deleted within 24 hours.

How to convert MPEG-2 to SD2

1

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

2

Choose sd2 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your sd2 file right afterwards

About formats

MPEG-2 is a widely deployed video and audio compression standard developed by the Moving Picture Experts Group and approved in 1995 as ISO/IEC 13818. Building on the foundations of MPEG-1, MPEG-2 was designed to handle higher bit rates and resolutions, particularly interlaced video for broadcast television, making it suitable for applications ranging from standard-definition TV to high-definition content. The standard introduces the concept of profiles and levels, allowing implementations to target specific capability tiers — from the Simple Profile for basic applications to the High Profile supporting 4:2:2 chroma for professional broadcast. MPEG-2 became the compression backbone of digital television worldwide, adopted by DVB, ATSC, and ISDB standards, and it serves as the video codec for DVD-Video, bringing movie-quality video to the consumer market. The transport stream layer provides robust multiplexing with error resilience features essential for broadcast delivery over noisy channels, while the program stream variant serves storage-oriented applications like DVDs. MPEG-2 supports resolutions up to 1920x1152 in the Main Profile at High Level, with bit rates reaching 80 Mbps in professional configurations. Although newer codecs like H.264 and HEVC offer substantially better compression efficiency, MPEG-2 remains entrenched in broadcast infrastructure, cable and satellite systems, and billions of DVD discs in circulation worldwide.
Initial release: 1995
Sound Designer II (SD2) is a professional audio format created by Digidesign around 1988 as the successor to the original Sound Designer format. For over a decade, SD2 was the standard interchange format in professional recording studios, especially those on Macintosh systems. It stores uncompressed linear PCM audio at up to 24-bit resolution with sample rates used in professional production (44.1, 48, 88.2, and 96 kHz). A distinctive technical trait is its reliance on the classic Mac OS resource fork for critical metadata — sample rate, bit depth, and channel configuration — while audio data resides in the data fork. This design worked elegantly within the Mac ecosystem but created portability challenges when files moved to Windows or Unix. A key advantage was SD2's support for multiple channels in a single file and tight integration with the Pro Tools editing environment, enabling non-destructive region-based editing. The format also carried loop points and markers, making it valuable for sample libraries. As Avid Technology shifted Pro Tools toward WAV and AIFF, SD2 usage declined, but millions of legacy session archives still contain SD2 files needing occasional conversion.
Initial release: 1988

Frequently Asked Questions

Why convert MPEG-2 to SD2?

SD2 is the legacy Digidesign format — found in older Pro Tools sessions.

How do I open SD2 files?

Older Pro Tools versions, SoX, and Audacity.

Is only the audio extracted?

Yes — the video portion of the MPEG-2 file is discarded. Only the audio track is saved as SD2.

Can I convert multiple files?

Upload several MPEG-2 videos at once and extract SD2 audio from each simultaneously in a single batch.

Are my uploads secure?

MPEG-2 files are deleted immediately after conversion. SD2 outputs are removed from our servers within 24 hours.