Android real-time video network transmission solution Summary (a total of five sets)

Recently, I have studied the real-time video network transmission problem of Android. I have spent a lot of effort on video processing. I have summarized the following five solutions and compared them.

 

Take video transmission of 320x240 as an Example

Solution	Compression rate	Compression/Transmission Mode	Real-time	Average Traffic consumption	Transmission Distance
Use the callback function of camera to send the original yuv420 data.	0	No compression, frame-Based Transmission	High (20 ~ 30 FPS)	Very high (6.5 Mbps), too horrible o_o	Wired or wireless at close distance
Use mediarecorder to hard encode yuv420 with h264 before sending	High (95%)	Inter-frame compression and Video Stream Transmission	High (20 FPS)	Low (30 ~ 70 Kbps)	Long distance
Call the local h264 encoding library (JNI) to encode a frame of yuv420 and then send	High (97%)	Inter-frame compression, transmitted by Frame	Low (2 FPS)	Low (20 Kbps)	Long distance
Use a gzip library to compress a frame of data and then send it (a wonderful Practice)	Relatively high (70% ~ 80%)	Intra-frame compression and transmission by Frame	Low (5 FPS)	Relatively high (300 Kbps)	Long distance
Compressing and transmitting one frame of data in JPEG Mode	Average (about 60%)	Intra-frame compression and transmission by Frame	High (25 FPS)	(170 Kbps)	Long distance (bandwidth allowed)

Note: mediarecorder has strong hardware dependence. Therefore, different mobile phones have different performance. Some mobile phone data transmission may be congested, reducing the real-time performance.

 

To sum up, solution 2 (mediarecorder) and solution 5 (JPEG) can still be considered. Because my project only needs to transmit data in close-range wireless mode, and the hardware level is not high, therefore, solution 5 is selected.

 

 

The above scheme is summarized after I have studied the real-time video encoding and transmission scheme in a more specific and in-depth manner recently. I hope that friends who need to study video transmission can refer to it!