Difference between revisions of "TS Info"
Jump to navigation
Jump to search
(Created page with '=== Introduction === After some discussion on IRC regarding availability of a Linux utility to display MPEG-TS info from UDP / RTP streams, I have decided to have a go at writin...') |
(→Features: Add wikilinks, including GOP) |
||
| (9 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
| − | + | 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 |
| − | * | + | * [[Bitrate]]s (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 | ||
| + | <pre> | ||
| + | TS Analyser GUI | ||
| + | | | ||
| + | |||
| + | MPEG-TS --------> RTP/UDP input ---> TS Analyser --> RTP/UDP output | ||
| + | (MPTS/SPTS) | | ||
| + | TS Monitor --> send trigger if deviation detected | ||
| + | </pre> | ||
| + | == License == | ||
| + | |||
| + | * TS Analyser GUI : GPLv2 | ||
| + | * TS Analyser library : LGPLv2.1 | ||
| + | * TS Monitor daemon : GPLv2 | ||
| + | |||
| + | [[Category:Dev Discussions]] | ||
Latest revision as of 05:02, 16 May 2019
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
