207 lines
8.6 KiB
Markdown
207 lines
8.6 KiB
Markdown
---
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slug: lets-do-h265-live-streaming
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title: SRS - H.265 Live Streaming Saving 50% Cost
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authors: []
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tags: [architecture, hevc, h265, codec, live]
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custom_edit_url: null
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---
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# Let's Do H265 Live Streaming
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> Written by [Winlin](https://github.com/winlinvip), [runner365](https://github.com/runner365), [yinjiaoyuan](https://github.com/yinjiaoyuan), [PieerePi](https://github.com/PieerePi), [qichaoshen82](https://github.com/qichaoshen82), [ZSC714725](https://github.com/ZSC714725), [bluestn](https://github.com/bluestn), [mapengfei53](https://github.com/mapengfei53), [chundonglinlin](https://github.com/chundonglinlin), [duiniuluantanqin](https://github.com/duiniuluantanqin), [panda1986](https://github.com/panda1986)
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SRS 6.0 supports HEVC(H.265), for RTMP, HTTP-FLV, HTTP-TS, HLS, MPEG-DASH, WebRTC(Safari), DVR FLV, DVR MP4 and WordPress SrsPlayer, etc.
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Generally, H.265 is 50% off than H.264, so you only need to pay 50% bills if H.265.
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<!--truncate-->
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Now, you're able to use HEVC(H.265) in live streaming.
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## Why Important?
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H.265 uses less bandwidth than H.264, which means lower bandwidth cost, or higher quality in same bandwidth.
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Furthermore, if want 8K live streaming, you must use H.265, because H.264 doesn't support 8K resolution.
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Please note that there are still some traps for H.265 live streaming.
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## Status of H.265
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The status of H.265, for different use scenarios.
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Part 1, publisher or encoder for H.265.
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* [x] Publish SRT stream by FFmpeg.
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* [x] Publish SRT stream by OBS.
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* [x] Publish RTMP stream by FFmpeg, patch is [here](https://github.com/ossrs/srs/issues/465#ffmpeg-tools)
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* [x] Push WebRTC by Safari, should be enabled by user.
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* [ ] Not supported: Chrome/Firefox push WebRTC stream.
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* [ ] Not supported: OBS publish RTMP stream.
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Part 2, play stream by FFmpeg/ffplay for H.265.
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* [x] Play HTTP-TS by FFmpeg.
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* [x] Play HLS by FFmpeg.
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* [x] Play MPEG-DASH by FFmpeg.
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* [x] Play SRT by FFmpeg.
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* [x] Play HTTP-TS by ffplay.
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* [x] Play HLS by ffplay.
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* [x] Play MPEG-DASH by ffplay.
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* [x] Play SRT by ffplay.
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* [x] Play RTMP by FFmpeg, with [patch](https://github.com/ossrs/srs/issues/465#ffmpeg-tools).
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* [x] Play HTTP-FLV by FFmpeg, with [patch](https://github.com/ossrs/srs/issues/465#ffmpeg-tools).
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* [x] Play RTMP by fflay, with [patch](https://github.com/ossrs/srs/issues/465#ffmpeg-tools).
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* [x] Play HTTP-FLV by ffplay, with [patch](https://github.com/ossrs/srs/issues/465#ffmpeg-tools).
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Part 3, play stream by H5 MSE for H.265.
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* [x] Play HTTP-TS by Chrome, using mpegts.js.
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* [x] Play HTTP-FLV by Chrome, using mpegts.js.
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* [x] Play WebRTC stream by Safari, should be enabled by user.
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* [ ] Not supported: Play HLS by [hls.js](https://github.com/video-dev/hls.js).
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* [ ] Not supported: Play MPEG-DASH by [dash.js](https://github.com/Dash-Industry-Forum/dash.js).
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* [ ] Not supported: Play WebRTC by Chrome/Firefox.
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Part 4, play stream by VLC for H.265.
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* [x] Play HTTP-TS by VLC.
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* [x] Play SRT by VLC.
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* [x] Play HLS by VLC.
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* [x] Play MPEG-DASH by VLC.
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* [ ] Not supported: Play RTMP by VLC.
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* [ ] Not supported: Play HTTP-FLV by VLC.
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Part 5, other features for H.265.
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* [x] DVR to FLV or MP4 file.
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* [x] Parse HEVC metadata for HTTP-API.
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* [x] Black box test support HEVC.
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* [x] Patch FFmpeg in SRS dev-docker.
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* [x] Support HEVC for [WordPress plugin SrsPlayer](https://github.com/ossrs/WordPress-Plugin-SrsPlayer).
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* [ ] Not supported: Update [Oryx](https://github.com/ossrs/oryx) for HEVC.
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* [ ] Not supported: Edge server supports publish HEVC stream to origin.
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* [ ] Not supported: Edge server supprots play HEVC stream from origin.
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* [ ] Not supported: HTTP Callback takes HEVC metadata.
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* [ ] Not supported: Prometheus Exporter supports HEVC metadata.
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* [ ] Not supported: Improve coverage for HEVC.
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* [ ] Not supported: Supports benchmark for HEVC by [srs-bench](https://github.com/ossrs/srs-bench).
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If native iOS or Android application, please use FFmpeg.
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Appreciate the patch for [Chrome 105](https://zhuanlan.zhihu.com/p/541082191) to support HEVC for MSE, it makes the HEVC
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live streaming possible.
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MSE HEVC requires GPU hardware decoding, please open `chrome://gpu` then search `hevc`, and it should work if matched.
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## Usage: Live
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This is an example fo H.265 live streaming.
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First, run SRS in docker:
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```bash
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docker run --rm -it -p 1935:1935 -p 8080:8080 ossrs/srs:6 \
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./objs/srs -c conf/docker.conf
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```
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Use FFmepg to publish HEVC over RTMP, see [FFmpeg Tools](#ffmpeg-tools):
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```bash
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# For macOS
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docker run --rm -it ossrs/srs:encoder ffmpeg -stream_loop -1 -re -i doc/source.flv \
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-acodec copy -vcodec libx265 -f flv rtmp://host.docker.internal/live/livestream
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# For linux
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docker run --net=host --rm -it ossrs/srs:encoder ffmpeg -stream_loop -1 -re -i doc/source.flv \
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-acodec copy -vcodec libx265 -f flv rtmp://127.0.0.1/live/livestream
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```
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> Note: Please change the ip `host.docker.internal` to your SRS's IP.
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Done, please open links bellow in browser:
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* [http://localhost:8080/live/livestream.flv](http://localhost:8080/players/srs_player.html?stream=livestream.flv)
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* `http://localhost:8080/live/livestream.m3u8`
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> Note: Please use VLC or ffplay to play HLS, because hls.js doesn't support it.
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Please follow wiki of SRS to use other protocols.
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## Usage: WebRTC
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Right now, at 2023.03, only Safari support HEVC over WebRTC, neither Chrome nor Firefox supports it.
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And, you should enable the HEVC for Safari by clicking `Develop > Experimental Features > WebRTC H265 codec`.
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For detail usage, please follow [#465](https://github.com/ossrs/srs/issues/465#safari-webrtc).
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Beside HEVC, WebRTC has better support for AV1, Safari/Chrome/Firefox supports AV1, please read [#1070](https://github.com/ossrs/srs/issues/1070) for detail.
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Note that MSE doesn't support AV1.
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> Note: Media Source Extensions (MSE) is H5 API for media streaming, on which mpegts.js, hls.js and dash.js bases. Please see [MDN: MSE](https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API).
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## FFmpeg Patch
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FFmpeg 6 has supported HEVC over RTMP, if you want to build from code, please see
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[FFmpeg Tools](../docs/v6/doc/hevc#ffmpeg-tools#ffmpeg-tools).
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SRS dev-docker already patched FFmpeg, ffplay and ffprobe, so user can use it:
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```bash
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# For macOS
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docker run --rm -it ossrs/srs:encoder ffmpeg -stream_loop -1 -re -i doc/source.flv \
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-acodec copy -vcodec libx265 -f flv rtmp://host.docker.internal/live/livestream
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# For linux
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docker run --net=host --rm -it ossrs/srs:encoder ffmpeg -stream_loop -1 -re -i doc/source.flv \
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-acodec copy -vcodec libx265 -f flv rtmp://127.0.0.1/live/livestream
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```
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Please see [FFmpeg Tools](../docs/v6/doc/hevc#ffmpeg-tools#ffmpeg-tools) for detail.
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## Known Issues
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The known issues for HEVC live streaming:
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1. Safari HEVC WebRTC doesn't support converting to other protocols, such as RTMP.
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2. Chrome/Firefox WebRTC doesn't support HEVC, no plan also.
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3. All browsers support MSE except iOS, and note that HEVC MSE requires GPU hardware decoding.
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4. For H5 player, only mpegts.js supports HEVC, neither hls.js nor dash.js support it.
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On some use scenario, HEVC is available now, please evaluate it by yourself.
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## Cloud Service
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At SRS, our goal is to establish a non-profit, open-source community dedicated to creating an all-in-one,
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out-of-the-box, open-source video solution for live streaming and WebRTC online services.
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Additionally, we offer a [Cloud](../cloud) service for those who prefer to use cloud service instead of building from
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scratch. Our cloud service features global network acceleration, enhanced congestion control algorithms,
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client SDKs for all platforms, and some free quota.
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To learn more about our cloud service, click [here](../cloud).
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## Thanks
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There are some developers that contributed to SRS HEVC feature:
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* [runner365](https://github.com/runner365) The first patch for HEVC for RTMP, HLS and SRT.
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* [yinjiaoyuan](https://github.com/yinjiaoyuan) Bug fixed.
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* [PieerePi](https://github.com/PieerePi) Bug fixed.
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* [qichaoshen82](https://github.com/qichaoshen82) Bug fixed.
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* [ZSC714725](https://github.com/ZSC714725) Bug fixed.
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* [bluestn](https://github.com/bluestn) Support HEVC for MP4 and GB28181.
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* [mapengfei53](https://github.com/mapengfei53) Support HEVC for MP4.
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* [chundonglinlin](https://github.com/chundonglinlin) Support HEVC for SRT.
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* [duiniuluantanqin](https://github.com/duiniuluantanqin) Support HEVC for GB28181.
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* [panda1986](https://github.com/panda1986) Supprot HEVC for WordPress SrsPlayer.
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Really appreciated for [mpegts.js](https://github.com/xqq/mpegts.js), which supports HEVC for HTTP-FLV and HTTP-TS.
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## Contact
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Welcome for more discussion at [discord](https://discord.gg/bQUPDRqy79).
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