M2TS to GSM Converter

Extract M2TS audio as GSM speech compression format online

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Blu-ray to Telephony

Extract dialogue from M2TS Blu-ray video and encode it as GSM 06.10 — the standard speech compression used in mobile networks worldwide.

Extreme Compression

GSM shrinks M2TS audio to a fraction of its size. Ideal for voice storage systems where compact files are a priority over music fidelity.

Cloud Processing

Large M2TS files are processed on our servers. GSM encoding is CPU-intensive but handled remotely — your machine stays unaffected.

How to convert M2TS to GSM

1

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

2

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

3

Let the file convert and you can download your gsm 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
GSM 06.10 (Full Rate) is the foundational speech codec of the Global System for Mobile Communications standard, ratified by ETSI in 1991 and deployed across hundreds of cellular networks worldwide. Operating at a fixed 13 kbit/s, the algorithm applies Regular Pulse Excitation with Long-Term Prediction (RPE-LTP) to compress 20 ms frames of 8 kHz mono speech into just 33 bytes each. This approach models the vocal tract as a linear predictive filter, encodes the excitation signal, and leverages pitch periodicity for further reduction — tuned to deliver intelligible voice under the bandwidth constraints of early digital mobile channels. The codec powers not only GSM telephony but also many VoIP applications, voicemail systems, and IVR platforms that benefit from its low bitrate. Three concrete advantages stand out. First, extraordinary compression: one minute of speech fits in roughly 100 KB, enabling efficient storage and transmission. Second, universal tooling — libraries such as libgsm and SoX handle encoding and decoding on every major platform. Third, a royalty-free patent landscape that has encouraged adoption across open-source telephony projects like Asterisk and FreeSWITCH.
Initial release: 1991

Frequently Asked Questions

Why convert M2TS to GSM?

GSM 06.10 is the speech compression standard from mobile telecommunications. Extracting M2TS audio to GSM creates compact voice files for telephony.

Does GSM handle HD audio well?

GSM is a speech-focused codec — it compresses aggressively. HD audio from M2TS loses fidelity, but speech content remains clear and usable.

How much does GSM compress?

GSM 06.10 achieves roughly 10:1 compression versus raw PCM. Excellent for voice storage where bandwidth and disk space are limited.

What systems use GSM audio?

Voicemail servers, VoIP platforms, and mobile network infrastructure commonly use GSM-encoded audio for speech transmission and storage.

Is this conversion CPU-heavy?

GSM encoding runs on our servers — your device is not affected. Upload the M2TS file and let our cloud infrastructure handle the work.