TS Info

TS Info

In the Open Source multimedia field there are various choices for multimedia streaming and playback. However analysing and checking validity of MPEG-TS streams is not really possible. DVBsnoop (http://dvbsnoop.sourceforge.net/) is the only application that is only one that comes near this goal, but it is a commandline utility. This doesn't make it easy to be used.

The goal of TS Info is to be an easy to use MPEG-TS (MPTS/SPTS) analyser with all the information, analysis and validation right under you finger tips.

It should also be possible to insert the TS Analyser/TS Monitor in between the client and the server and monitor the stream for the boundaries configured. If the boundaries (or rules) are crossed, then a trigger will be sent to indicate a deviation from the required settings.

Features

• Input from TS/RTP/UDP or TS/UDP
• Possible extension to use linux-dvb device (maybe use dvblast as input)
• PID list and bandwidths / %age - bargraph
• Bitrates (also audio and video separate)
• Mux distance of audio and video packets
• SI table parsing (NIT, PMT, PAT, EIT, CAT, etc.) / descriptor parsing
• Detect scrambled content (check scrambling bits 11, 10, optional 01/00)
• I-frame gap
• Determine GOP length
• Detect Open/Closed GOP
• Teletext/closed captioning detection
• CRC errors
• I-frame decoding
• Discontinuity indication
• Subtitle decoding
• EPG grid
• PID selection and forwarding to VLC (via UDP stream?)
• Triggers on deviation from set boundaries (mux distance < 500ms, if not then sent trigger eg: sms/e-mail)
• Mention conformance to which standard and link to it if online source is available

Architecture

proposal: TS Analyser GUI - user interface to browse the MPEG-TS stream content (information gathered is similar to DVBsnoop) TS Analyser - real-time MPEG-TS analyser that informs the GUI/TS Monitor of features discovered and various measurements TS Monitor - real-time MPEG-TS monitor that triggers on deviations of preferred features in the MPEG-TS stream

                                    TS Analyser GUI
                                          |

MPEG-TS --------> RTP/UDP input ---> TS Analyser --> RTP/UDP output (MPTS/SPTS) |

                                    TS Monitor --> send trigger if deviation detected

License

TS Analyser GUI : GPLv2 TS Analyser library : LGPLv2.1 TS Monitor daemon : GPLv2