M2TS to GSRT Converter

Create Grandstream ringtones from M2TS Blu-ray audio

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Blu-ray to Ringtone

Turn audio moments from high-definition M2TS Blu-ray video into custom GSRT ringtones for your Grandstream IP phone — unique office audio.

Nothing to Install

Convert M2TS to GSRT entirely in your browser. No Grandstream firmware tools or audio editors needed for the conversion process.

Private and Secure

Uploaded M2TS files are deleted after processing. GSRT ringtone output is removed within 24 hours to keep your files confidential.

How to convert M2TS to GSRT

1

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

2

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

3

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

About formats

M2TS (MPEG-2 Transport Stream) is a container format used primarily for multiplexing audio, video, and other data on Blu-ray Disc media. The format is specified as part of the Blu-ray Disc Audio-Video (BDAV) standard developed by the Blu-ray Disc Association, with commercial Blu-ray products launching in 2006. M2TS files wrap content in MPEG-2 transport stream packets with an additional 4-byte timestamp header prepended to each 188-byte packet, resulting in 192-byte packets that enable more precise timing and error recovery during optical disc playback. This extended packet structure helps maintain synchronization when dealing with the variable read speeds inherent to disc-based media. M2TS supports the major Blu-ray video codecs including H.264/AVC, MPEG-2, and VC-1, alongside audio formats such as Dolby TrueHD, DTS-HD Master Audio, and LPCM for lossless surround sound. The container is also used by AVCHD camcorders for recording high-definition footage, making it common in both consumer disc playback and video production workflows. M2TS files preserve chapter markers, subtitle streams, and interactive menu data within the transport stream. Reliable synchronization mechanisms and support for high-quality codecs make M2TS well-suited for archiving high-definition content where preserving full source quality is essential.
Initial release: 2006
GSRT is a purpose-built ringtone format developed by Grandstream Networks for its line of IP phones and VoIP endpoint devices. Each file begins with a fixed-size header identifying sample rate (typically 8 kHz or 16 kHz), bit depth, and payload length, followed by PCM or mu-law encoded audio data optimized for the small speakers found in desk phones. The design prioritizes minimal decode complexity — Grandstream handsets run on embedded processors with limited memory, so the format avoids transform stages or complex bitstream parsing. Ringtones are usually provisioned through a web management interface or a centralized configuration server, letting IT administrators push branded audio to an entire fleet of phones at once. Although GSRT occupies a narrow niche within enterprise VoIP telephony, its straightforward binary layout means conversion tools can map the payload directly to WAV with minimal effort. Key advantages include rock-solid playback reliability on Grandstream hardware, negligible latency from file read to speaker output, and seamless integration with the provisioning ecosystem for company-wide ringtone deployment.
Initial release: 2002

Frequently Asked Questions

Why convert M2TS to GSRT?

GSRT is the ringtone format for Grandstream IP phones. Extracting audio from M2TS lets you use Blu-ray sounds as unique office phone tones.

Which Grandstream phones use GSRT?

Most GXP and GRP series Grandstream IP phones accept custom GSRT ringtones. Consult your model documentation for upload instructions.

Should I keep the clip short?

Yes — ringtones work best under 30 seconds. Trim the relevant audio segment from your M2TS file before or during the conversion.

What encoding does GSRT support?

GSRT files can hold A-Law, mu-law, and other telephony codecs. Our converter produces GSRT with the most compatible encoding for Grandstream phones.

Will M2TS surround audio convert?

GSRT is a mono telephony format. Multi-channel M2TS audio is mixed down to a single channel during conversion for phone speaker playback.