Development background
Prior to 2019, H.265 is not available on the web page until I saw Jinshan Cloud, Ali Cloud's technology pushed on the LVS streaming media community decoded to play h.265 The technical article of the video learned that the Internet of the Internet is really the forefront of technology, so we have repeated the arguments and research, combined with our early experience of EasyPlayer, started to have H.265 Web The idea of developing web player research and development;
From the beginning of 2020, there was an idea of supporting video supporting H.265 encoding format. The implementation of the epidemic period, and then to the current optimization of the redistribution, packet loss, and flower screen, all the processes that are constantly iterated and adapt.
In our previous player development, EasyPlayer is almost all protocols, which is compatible, including support for the RTMP protocol of domestic CDN Union, which is easy to drive, then, if these original technologies can be Reuse and grafting, for us, R & D becomes simple, happening, WASM technology is such a combination of underlying native technology + front-end technology:
Upgrade process
We have talked about the WASM playback support for EasyPlayer.js before, "Licensed for half a year, finally developed the web page to support the web page to the live broadcast and on-demand of H.265 (HEVC), Webassembly (WASM)", when completed Improve, first have an idea, the quick combination of the front end, will support the H.264 MSE player and the H.265 WASM player, and return the encoding format through the rear end, select the load player resource, Play, did not meet our EASY's consistent request, then have two months of continuous optimization and the live combat of each product. At present, EasyPlayer.js has reached a playback support for H.265 / H.264 has reached one. Very good compatibility and experience;
So, in order to reach the H5 web player can also reach the effect of native playback, we have made many optimizations:
Delay optimization
The delay consumption is mainly designed in decoding efficiency and buffer, we have reached a very good long-term low by transplanting the original easyplayer in the buffer experience and selective loss of the original player in native playback to the WASM player. Delayed playback effect;
2. Optimize reinforcement
Reinforcement is a very important function of players, especially in the security field, due to network abnormalities or other factors, will result in a short-term disconnection of the connection, so in time, reinforcement is a very necessary player.
3. Optimize packet loss
Take EasyGBS RTP live as an example, the national standard GB28181 protocol is very serious in the process of public network transmission, so it is very important to achieve a very good play experience, the player is very important for the packet loss. function points;
4. Optimize Carton
Similarly, the RTP packet loss will not only cause packet loss, but also cause the timestamp of the timestamp because of the front-end device or the transmission process, the playback process will generate a variety of statches, then the exception of the jump, then in this case, for the video Smooth live broadcast is very necessary, the player needs to make the timestamp to fault tolerance according to the process of the entire playback, reaching the smooth playback of unreffectiveness.
Research and development follow-up
WebSocket supports H.265
Since the protocol version of the HTTP 2.0 is also a certain limit on the Web support, the next step EasyPlayer.js will extend the support for WebSocket streams.
Support more audio formats
Support for security audio formats such as PCMA, PCMU, which is very necessary for security industries;
Support for more front-end drawing features
Support more front-end drawing, including regional drawing, face / behavior block diagram, object label, etc.
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