52 lines
1.8 KiB
Markdown
52 lines
1.8 KiB
Markdown
---
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title: FLV Vod Streaming
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sidebar_label: FLV Vod Streaming
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hide_title: false
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hide_table_of_contents: false
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---
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# FLV vod streaming
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## HTTP VOD
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I recomment:
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* Vod stream should always use HTTP protocol, never use RTMP.
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SRS can dvr RTMP live stream to flv file, and provides some tools for vod stream,
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but user should use other HTTP server to delivery flv file as vod stream.
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* In a word, SRS does not support vod, only support live.
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The workflow of flv vod stream:
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* SRS dvr live stream to flv file, or upload flv vod file, to the HTTP root dir: `objs/nginx/html`
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* HTTP server must support flv?start=offset, for example, flv module of nginx, or use experiment SRS HTTP server.
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* Use `research/librtmp/objs/srs_flv_injecter` inject the keyframe offset to metadata of flv.
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* Flash player play http flv url, for instance, `http://192.168.1.170:8080/sample.flv`
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* When user seek, for instance, seek to 300s.
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* Player use the keyframe offset in metadata to calc the offset of 300s, for instance, 300s offset=`6638860`
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* Start new request, url is `http://192.168.1.170:8080/sample.flv?start=6638860`
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Note: SRS HTTP server is experiment, do not limit the bandwidth.
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Note: SRS provides flv view tool `research/librtmp/objs/srs_flv_parser`, to list the seconds:offsets in metadata.
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## SRS Embeded HTTP server
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SRS supports http-api, so SRS can also parse HTTP protocol(partial HTTP right now),
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so SRS also implements a experiment HTTP server.
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SRS HTTP server is rewrite, table and partial HTTP protocol support,
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ok for online service.
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For some emebeded device, for instance, arm linux, user can use SRS HTTP server,
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for arm is not easy to build some server.
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## Config
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Read [HTTP Server](./http-server.md#config)
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Winlin 2015.1
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