Dynamic Adaptive Streaming over HTTP (DASH)

Creating a DASH Stream

From the local streams in EMS, issue the createDASHStream command:

Single Stream

General Format:

createDASHStream localstreamnames=<localstreamname> bandwidths=<bandwidth> targetFolder=<target_folder_path> groupname=<groupname>

For Windows:

createDASHStream localstreamnames=myStream bandwidths=51265536 targetfolder=C:\EvoStream\evo-webroot groupname=myDASHGroup

For Linux:

createDASHStream localstreamnames=myStream bandwidths=51265536 targetfolder=/var/evo-webroot groupname=myDASHGroup

The created files will automatically save in the targetFolder path.

evo-webroot:                           --> targetfolder
myDASHroup                             --> groupname
- myStream                             --> localstreamname
-- audio                               --> audio_folder
--- 51265536                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> audio_segment_file
---- segment_XXXXX.m4s                 --> audio_segment_file
-- video                               --> video_folder
--- 51265536                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> video_segment_file
---- segment_XXXXX.m4s                 --> video_segment_file
- manifest.mpd                         --> masterplaylist_file

Multiple Streams with Different Bitrates

To use multiple localStreamNames using one createDASHStream command do the following:

General Format:

createDASHStream localstreamnames=<localstreamname1>,<localstreamname2>,<localstreamnameX> bandwidths=<bandwidth1,bandwidth2,bandwidthX> targetFolder=<target_folder_path> groupname=<groupname>

For Windows:

createDASHStream localstreamnames=myStream1,myStream2 bandwidths=10000000,20000000 targetfolder=C:\EvoStream\evo-webroot groupname=myDASHGroup

For Linux:

createDASHStream localstreamnames=myStream1,myStream2 bandwidths=10000000,20000000 targetfolder=/var/evo-webroot groupname=myDASHGroup

The created files will automatically save in the targetFolder path.

evo-webroot:                           --> targetfolder
myDASHroup                             --> groupname
- myStream1                            --> localstreamname_1
-- audio                               --> audio_folder
--- 10000000                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> audio_segment_file
---- segment_XXXXX.m4s                 --> audio_segment_file
-- video                               --> video_folder
--- 10000000                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> video_segment_file
---- segment_XXXXX.m4s                 --> video_segment_file
- myStream2                            --> localstreamname_2
-- audio                               --> audio_folder
--- 20000000                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> audio_segment_file
---- segment_XXXXX.m4s                 --> audio_segment_file
-- video                               --> video_folder
--- 20000000                           --> bitrate_folder
---- seg_init.mp4                      --> initialization_segment
---- segment_0.m4s                     --> video_segment_file
---- segment_XXXXX.m4s                 --> video_segment_file
- manifest.mpd                         --> masterplaylist_file

Playing an DASH Manifest File

The corresponding link to play this stream would then be:

General Format:

http://<EMS_IP_Address:<Web_Server_Port>/<DASH_groupname>/<manifest_filename>

Sample URL:

http://192.168.2.34:8888/myDASHGroup/manifest.mpd

The player will now automatically play the stream once the DASH manifest is read.

Please see createDASHStream API for more details.