RTSP streaming decoding

This example rtsp2display implements the function of pulling rtsp code stream, decoding, and outputting video images through HDMI. Users can preview the screen through the display.

The example flow chart is as follows.

• Environment preparation:

  • Connect the development board and the monitor via an HDMI cable
  • Power on the development board and log in via the command line
  • Prepare the rtsp stream as the input source and use the system's preset streaming service. This service will process the 1080P_test.h264 video file into an rtsp stream with the URL rtsp://127.0.0.1/1080P_test.h264. Users can start the streaming service with the following command:

  xxxxxxxxxx
  cd /app/pydev_demo/08_decode_rtsp_stream/
  root@ubuntu:/app/pydev_demo/08_decode_rtsp_stream# sudo ./live555MediaServer &
  

   

• How to run: The sample code is provided in source code form and needs to be compiled and run using the make command.

  The steps are as follows:

  x
  sunrise@ubuntu:~$ cd /app/cdev_demo/rtsp2display
  sunrise@ubuntu:/app/cdev_demo/rtsp2display$ sudo make #Some warning messages may be printed, ignore them
  sunrise@ubuntu:/app/cdev_demo/decode2display$ sudo ./rtsp2display -i rtsp://127.0.0.1/1080P_test.h264 -t tcp
  

   

  Parameter configuration:

  • -i: stream url address
  • -t: transmission type, optional tcp / udp
  • Expected effect: After the program runs correctly, the video screen will be output through the HDMI interface of the development board, and the user can preview the video screen through the display. The running log is as follows.

  x
  sunrise@ubuntu:/app/cdev_demo/rtsp2display$ sudo ./rtsp2display -i rtsp://127.0.0.1/1080P_test.h264 -t tcp
  avformat_open_input ok!
  avformat_find_stream_info ok!
  Input #0, rtsp, from 'rtsp://127.0.0.1/1080P_test.h264':
    Metadata:
      title           : H.264 Video, streamed by the LIVE555 Media Server
      comment         : 1080P_test.h264
    Duration: N/A, start: 0.040000, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  av_dump_format ok!
  rtsp_w:1920,rtsp_h:1080
  display_w:1920,dispaly_h:1080
  ... omission ...
  sp_open_vps success!
  Created new framebuffer: fb_id=76 for dma_buf_fd=18
  

   

Notes:

• When using the UDP protocol to transmit the code stream, the screen may be distorted due to network packet loss. In this case, you can switch to TCP protocol transmission to solve the problem.