AV1 to GSM Converter

Extract GSM mobile voice audio from AV1 video online

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Mobile Telephony Standard

GSM 06.10 is the worldwide mobile voice codec — converting from AV1 creates audio for VoIP and IVR systems.

Ultra-Compact

GSM produces extremely small voice files at 13 kbps — ideal for telephony and voice prompt applications.

Secure Processing

AV1 uploads are erased right after conversion, and GSM outputs are deleted within 24 hours.

How to convert AV1 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

AV1 (AOMedia Video 1) is an open, royalty-free video coding format developed by the Alliance for Open Media, a consortium whose founding members include Google, Mozilla, Microsoft, Amazon, Netflix, and Intel, among others. The specification was finalized in June 2018 with the goal of providing a next-generation video codec that surpasses the compression efficiency of H.264 and HEVC while remaining free from licensing fees. AV1 achieves roughly 30-50% better compression than HEVC at equivalent visual quality, making it particularly attractive for streaming platforms seeking to reduce bandwidth costs without sacrificing viewer experience. The codec supports a broad range of features including film grain synthesis, flexible tiling for parallel processing, content-adaptive resolution switching, and a rich set of intra and inter prediction modes. Hardware decoding support has expanded rapidly across mobile processors, GPUs, and smart TVs, addressing early concerns about computational demands during encoding. AV1 has seen wide adoption from major streaming services for delivering 4K and HDR content, and it serves as the video component of the WebM container for web-based playback. The royalty-free status makes AV1 especially important for open web standards and accessible media distribution.
Initial release: June 25, 2018
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 AV1 to GSM?

GSM 06.10 is the global mobile telephony voice codec — used in VoIP, IVR systems, and applications requiring GSM audio encoding.

What opens GSM files?

SoX, Asterisk PBX, VLC, and VoIP applications handle GSM audio. It is the standard codec for telephony worldwide.

Is GSM suitable for music?

No — GSM is narrowband voice-only (8 kHz). For music or wideband audio, use MP3, AAC, or FLAC instead.

How compact are GSM files?

GSM compresses speech at roughly 13 kbps — a minute of voice takes only about 98 KB of storage.

Is my data safe?

AV1 uploads are deleted immediately. GSM outputs are purged from our servers within 24 hours.