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Add codecs supprted in README

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Winlin 2025-11-09 12:11:50 -05:00 committed by winlin
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README.md
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@ -12,6 +12,7 @@
SRS/7.0 ([Kai](https://ossrs.io/lts/en-us/product#release-70)) is a simple, high-efficiency, and real-time video server,
supporting RTMP/WebRTC/HLS/HTTP-FLV/SRT/MPEG-DASH/GB28181, Linux/macOS, X86_64/ARMv7/AARCH64/M1/RISCV/LOONGARCH/MIPS,
with codec support for H.264, H.265, AV1, VP9, AAC, Opus, and G.711,
and essential [features](trunk/doc/Features.md#features).
[![SRS Overview](https://ossrs.net/wiki/images/SRS-SingleNode-4.0-sd.png?v=114)](https://ossrs.net/wiki/images/SRS-SingleNode-4.0-hd.png)

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trunk/3rdparty/srs-docs/doc/webrtc.md vendored
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@ -470,6 +470,27 @@ To use VP9, add the `codec=vp9` query parameter to WHIP/WHEP URLs:
Browser support: Chrome/Edge M29+, Firefox M28+, Opera M16+. Safari does not support VP9. Use H.264 if you need RTMP/HLS conversion,
DVR recording, or Safari compatibility.
## G.711 Codec Support
SRS supports G.711 (PCMU/PCMA) audio codec for WebRTC since v7.0.124 ([#4075](https://github.com/ossrs/srs/issues/4075)).
G.711 is a widely-used, royalty-free audio codec with excellent compatibility across VoIP systems, IP cameras, and legacy telephony equipment.
SRS implements G.711 as relay-only (SFU mode), accepting G.711 audio streams via WHIP and forwarding to WHEP players without transcoding.
G.711 streams cannot be converted to RTMP/HLS or recorded to DVR.
To use G.711, add the `acodec=pcmu` or `acodec=pcma` query parameter to WHIP/WHEP URLs:
* Publish with PCMU: `http://localhost:1985/rtc/v1/whip/?app=live&stream=livestream&acodec=pcmu`
* Play with PCMU: `http://localhost:1985/rtc/v1/whep/?app=live&stream=livestream&acodec=pcmu`
* Publish with PCMA: `http://localhost:1985/rtc/v1/whip/?app=live&stream=livestream&acodec=pcma`
You can also combine video and audio codec parameters:
* VP9 + PCMU: `http://localhost:1985/rtc/v1/whip/?app=live&stream=livestream&vcodec=vp9&acodec=pcmu`
* H.264 + PCMA: `http://localhost:1985/rtc/v1/whip/?app=live&stream=livestream&vcodec=h264&acodec=pcma`
Browser support: All major browsers support G.711 (PCMU/PCMA). PCMU (μ-law) is prioritized over PCMA (A-law) when both are available.
Use Opus if you need RTMP/HLS conversion or DVR recording.
## SFU: One to One
Please use `conf/rtc.conf` as config.