reference:

https://github.com/sanlengjingvv/mpeg-dash-sample

ubuntu install ffmpeg, three-line command

Installation of GPAC (MP4Box) under Ubuntu | Build DASH video system based on MP4Box

Install the latest node on ubuntu

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Environment ubuntu 18.04

1. First install ffmpeg, MP4Box, node and npm according to the above link

ffmpeg: A set of open source computer programs that can be used to record, convert digital audio and video, and convert them into streams. Adopt LGPL or GPL license. It provides a complete solution for recording, converting, and streaming audio and video. It contains a very advanced audio/video codec library libavcodec. In order to ensure high portability and codec quality, many codes in libavcodec are developed from scratch.Use it here to get different quality video and separate audio。

MP4Box: Use mp4box to get the audio, video and .mpd files needed by MPEG-Dash.

Two, use ffmpeg, MP4Box

Video link:https://github.com/sanlengjingvv/mpeg-dash-sample/blob/master/input.mp4

# Use ffmpeg to transcode to get different quality videos
ffmpeg -i input.mp4 -s 160x90 -c:v libx264 -b:v 250k -g 90 -an input_video_160x90_250k.mp4
ffmpeg -i input.mp4 -s 320x180 -c:v libx264 -b:v 500k -g 90 -an input_video_320x180_500k.mp4
ffmpeg -i input.mp4 -s 640x360 -c:v libx264 -b:v 750k -g 90 -an input_video_640x360_750k.mp4
ffmpeg -i input.mp4 -s 640x360 -c:v libx264 -b:v 1000k -g 90 -an input_video_640x360_1000k.mp4
ffmpeg -i input.mp4 -s 1280x720 -c:v libx264 -b:v 1500k -g 90 -an input_video_1280x720_1500k.mp4
 # Use ffmpeg to get audio
ffmpeg -i input.mp4 -c:a aac -b:a 128k -vn input_audio_128k.mp4

# Use mp4box to get the audio, video and .mpd files needed by MPEG-Dash
MP4Box -dash 5000 -rap -frag-rap -profile dashavc264:onDemand -frag 5000 input_audio_128k.mp4 input_video_160x90_250k.mp4 input_video_320x180_500k.mp4 input_video_640x360_750k.mp4 input_video_640x360_1000k.mp4 input_video_1280x720_1500k.mp4 -out main.mpd

         The interface after running is as follows, including original video, audio, slice and mpd file

Three, use npm to install http-server

npm install http-server -g
npm install grunt-cli -g

    Open the http-server server

# --cors means to accept cross-domain resource sharing of any domain name, -c-1 means not to enable caching
http-server -a 127.0.0.1 -p 9999 --cors -c-1

    Open the browser and enterhttp://127.0.0.1:9999/, As shown below

                                                      

Fourth, download dash.js and start

Find another directory dash.js folder to download and build dash.js, an open source player that supports MPEG-Dash protocol

git clone https://github.com/Dash-Industry-Forum/dash.js.git
cd dash.js
 npm install //Download the required modules
 grunt dev //start

After the following interface appears, click "DASH IF Reference player”

             

          

5. Open the sliced ​​video.

        Right-click the mpd file on the http-server page, select copy link, and then copy it to the link on the player interface in the figure above, and click load to load the video. As shown in the figure, the video quality can be selected in the lower right corner of the video.

        The cache, delay, bit rate and other information will also be displayed below