Description
Shows DVB signal information on the OSD.
--------------------------------------------------------------
|## Channel Name ########################## [AR][VF][A/DD][D]|
|[=====Signal Strength in % ==============|=================]|
|[=====Signal-to-Noise Ratio in % ========|=================]|
| STR: #0000 (0%) BER: #00000000 Video: 0 Mbit/s |
| SNR: #0000 (0%) UNC: #00000000 Audio: 0 kbit/s |
| [LOCK] [SIGNAL] [CARRIER] [VITERBI] [SYNC] |
--------------------------------------------------------------
STR - Signal strength
SNR - Signal-to-noise ratio
BER - Bit error rate
UNC - Uncorrected blocks
Video - Calculated video bitrate in Mbit/s
Audio - Calculated audio / AC-3 bitrate in kbit/s
LOCK - Everything's working...
SIGNAL - Found something above the noise level
CARRIER - Found a DVB signal
VITERBI - FEC (forward error correction) is stable
SYNC - Found sync bytes
AR - Aspect Ratio: 1:1/4:3/16:9/2.21:1 (optional)
VF - Video format: PAL/NTSC (optional)
A/DD - Audio (0..5) / AC-3 track (optional)
D - Device number: 0..3 (optional)
Handling
| Key
|
Description
|
| ChanUp/ChanDn |
Switch channel up/down
|
| Up/Down |
Switch channel up/down
|
| 0-9 |
Select channel
|
| Ok |
Switch between display modes: basic, transponder, stream, AC-3
|
| Green |
Select next audio track
|
| Back |
Exit plugin
|
| (Right/Left) |
(Switch to next/previous device that provides the current channel)
|
Hardware requirements
Software requirements
Installation
See plugin installation
Options
| Option
|
Description
|
| NTSC_SYSTEM=1
|
OSD defaults for NTSC system
|
Problems
- The plugin supports only those DVB cards with _one_ frontend (do any cards with multiple frontends even exist?), because I haven't yet figured howto do it without patching the VDR core.
- Disable the stream analyze to speed up heavy zapping sessions.
- The signal strength and signal-to-noise ratio values are comparable only between the same brand/model frontends. Due to the lack of proper frontend specifications those values cannot be calculated into any real units.
- If the OSD isn't visible, you've configured the OSD height too big or too small. Please, try to adjust the variable on the setup page before writing any bug reports.
- There's a shrinked default OSD height for NTSC users: make NTSC_SYSTEM=1
- The device switching feature is still non-functional.
Links
