Converts SMPTE ST 2110-20 PCAP file to PNG image file.
Project Lead: Thomas Edwards ([email protected])
This program will search in a pcap file for the first full frame of video (based on RTP marker bits) and will generate a PNG file of that frame.
The file must contain ONLY packets of the desired ST 2110-20 flow.
Dependencies
This program depends on "lodepng", please obtain this from:
https://github.com/lvandeve/lodepng
Also libpcap:
https://github.com/the-tcpdump-group/libpcap
Build Instructions
Install libpcap. Have lodepng.h and lodepng.c in the compile directory. Note that you need to rename
lodepng.cpp to lodepng.c
Then compile with:
$ cc ST2110-20-to-PNG.c lodepng.c -o ST2110-20-to-PNG -lpcap -std=c99 -D_BSD_SOURCE
Note -D_BSD_SOURCE, needed becuase I am using the BSD version of UDP headers.
This software has been tested on:
OS X El Capitan 10.11.6
Amazon Linux AMI 2017.09.1.20180307 x86_64 HVM GP2
Usage
ST2110-20-to-PNG [-r <720p|1080i>] -i <input pcap file> -o <output png file>
-r is the active video resolution. 720p is 1280x720 progressive, 1080i is 1920x1080 interlaced. Resolution is assumed to be "720p" if not specified.
Files
ST2110-20-to-PNG.c: Source code
ST_2110_20_color_bars.pcap: ST 2110-20 PCAP capture of a few frames of 720p59.94
ST_2110_20_color_bars.png: Example PNG image output
License
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.