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SRS supports DVR RTMP stream to flv file.
Use --with-dvr to enable dvr, while --without-dvr to disable it.
For information about the dvr option, read Build
The difficult of DVR is about the flv name, while SRS use app/stream+random name. User can use http-callback to rename, for example, when DVR reap flv file.
Config for DVR:
# dvr RTMP stream to file,
# start to record to file when encoder publish,
# reap flv according by specified dvr_plan.
dvr {
# whether enabled dvr features
# default: off
enabled on;
# the dvr output path.
# we supports some variables to generate the filename.
# [vhost], the vhost of stream.
# [app], the app of stream.
# [stream], the stream name of stream.
# [2006], replace this const to current year.
# [01], replace this const to current month.
# [02], replace this const to current date.
# [15], replace this const to current hour.
# [04], repleace this const to current minute.
# [05], repleace this const to current second.
# [999], repleace this const to current millisecond.
# [timestamp],replace this const to current UNIX timestamp in ms.
# @remark we use golang time format "2006-01-02 15:04:05.999"
# for example, for url rtmp://ossrs.net/live/livestream and time 2015-01-03 10:57:30.776
# 1. No variables, the rule of SRS1.0(auto add [stream].[timestamp].flv as filename):
# dvr_path ./objs/nginx/html;
# =>
# dvr_path ./objs/nginx/html/live/livestream.1420254068776.flv;
# 2. Use stream and date as dir name, time as filename:
# dvr_path /data/[vhost]/[app]/[stream]/[2006]/[01]/[02]/[15].[04].[05].[999].flv;
# =>
# dvr_path /data/ossrs.net/live/livestream/2015/01/03/10.57.30.776.flv;
# 3. Use stream and year/month as dir name, date and time as filename:
# dvr_path /data/[vhost]/[app]/[stream]/[2006]/[01]/[02]-[15].[04].[05].[999].flv;
# =>
# dvr_path /data/ossrs.net/live/livestream/2015/01/03-10.57.30.776.flv;
# 4. Use vhost/app and year/month as dir name, stream/date/time as filename:
# dvr_path /data/[vhost]/[app]/[2006]/[01]/[stream]-[02]-[15].[04].[05].[999].flv;
# =>
# dvr_path /data/ossrs.net/live/2015/01/livestream-03-10.57.30.776.flv;
# @see https://github.com/ossrs/srs/wiki/v2_EN_DVR#custom-path
# @see https://github.com/ossrs/srs/wiki/v2_EN_DVR#custom-path
# default: ./objs/nginx/html/[app]/[stream].[timestamp].flv
dvr_path ./objs/nginx/html/[app]/[stream].[timestamp].flv;
# the dvr plan. canbe:
# session reap flv when session end(unpublish).
# segment reap flv when flv duration exceed the specified dvr_duration.
# default: session
dvr_plan session;
# the param for plan(segment), in seconds.
# default: 30
dvr_duration 30;
# the param for plan(segment),
# whether wait keyframe to reap segment,
# if off, reap segment when duration exceed the dvr_duration,
# if on, reap segment when duration exceed and got keyframe.
# default: on
dvr_wait_keyframe on;
# about the stream monotonically increasing:
# 1. video timestamp is monotonically increasing,
# 2. audio timestamp is monotonically increasing,
# 3. video and audio timestamp is interleaved monotonically increasing.
# it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
# however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
# the time jitter algorithm:
# 1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
# 2. zero, only ensure sttream start at zero, ignore timestamp jitter.
# 3. off, disable the time jitter algorithm, like atc.
# default: full
time_jitter full;
}
The plan of DVR used to reap flv file:
The config file can also use conf/dvr.segment.conf or conf/dvr.session.conf.
We can custom the dvr path(dir and filename) by rules:
[stream].[timestamp].flv as filename to compatible with SRS1.0 rule.About the data and time variable, refer to go time format string, for example, use an actual year 2006 instead YYYY, it's a good design:
2006-01-02 15:04:05.999
The variables of dvr:
For example, for url rtmp://ossrs.net/live/livestream and time 2015-01-03 10:57:30.776:
No variables, the rule of SRS1.0(auto add [stream].[timestamp].flv as filename):
Use stream and date as dir name, time as filename:
Use stream and year/month as dir name, date and time as filename:
Use vhost/app and year/month as dir name, stream/date/time as filename:
Use app as dirname, stream and timestamp as filename(the SRS1.0 rule):
Enable the on_dvr of http_hooks:
vhost your_vhost {
dvr {
enabled on;
dvr_path ./objs/nginx/html/[app]/[stream]/[2006]/[01]/[02]/[15].[04].[05].[999].flv;
dvr_plan segment;
dvr_duration 30;
dvr_wait_keyframe on;
}
http_hooks {
enabled on;
on_dvr http://127.0.0.1:8085/api/v1/dvrs;
}
}
The log of api-server for api dvrs：
[2015-01-03 15:25:48][trace] post to dvrs, req={"action":"on_dvr","client_id":108,"ip":"127.0.0.1","vhost":"__defaultVhost__","app":"live","stream":"livestream","cwd":"/home/winlin/git/srs/trunk","file":"./objs/nginx/html/live/livestream/2015/1/3/15.25.18.442.flv"}
[2015-01-03 15:25:48][trace] srs on_dvr: client id=108, ip=127.0.0.1, vhost=__defaultVhost__, app=live, stream=livestream, cwd=/home/winlin/git/srs/trunk, file=./objs/nginx/html/live/livestream/2015/1/3/15.25.18.442.flv
127.0.0.1 - - [03/Jan/2015:15:25:48] "POST /api/v1/dvrs HTTP/1.1" 200 1 "" "SRS(Simple RTMP Server)2.0.88"
For more information, read about HttpCallback
The bugs of dvr:
The changing of dvr and reload will restart the dvr, that is, to close current dvr file then apply new config.
Winlin 2015.1
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