Femon-plugin: Difference between revisions
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Shows DVB signal information on the OSD. |
Shows DVB signal information on the OSD. |
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-------------------------------------------------------------- |
-------------------------------------------------------------- |
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|## Channel Name ######################### |
|## Channel Name ########################## [AR][VF][A/DD][D]| |
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|[==== |
|[=====Signal Strength in % ==============|=================]| |
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|[==== |
|[=====Signal-to-Noise Ratio in % ========|=================]| |
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| STR: #0000 (0%) BER: #00000000 Video: 0 Mbit/s | |
| STR: #0000 (0%) BER: #00000000 Video: 0 Mbit/s | |
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| SNR: #0000 (0%) UNC: #00000000 Audio: 0 kbit/s | |
| SNR: #0000 (0%) UNC: #00000000 Audio: 0 kbit/s | |
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| [LOCK] [SIGNAL] [CARRIER] [VITERBI] [SYNC] | |
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-------------------------------------------------------------- |
-------------------------------------------------------------- |
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VITERBI - FEC (forward error correction) is stable |
VITERBI - FEC (forward error correction) is stable |
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SYNC - Found sync bytes |
SYNC - Found sync bytes |
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DD - AC-3 stream (optional) |
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AR - Aspect Ratio: 1:1/4:3/16:9/2.21:1 (optional) |
AR - Aspect Ratio: 1:1/4:3/16:9/2.21:1 (optional) |
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VF - Video format: PAL/NTSC (optional) |
VF - Video format: PAL/NTSC (optional) |
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A |
A/DD - Audio (0..5) / AC-3 track (optional) |
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D - Device number: 0..3 (optional) |
D - Device number: 0..3 (optional) |
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|bgcolor=#efefef|Ok || Switch between display modes: basic, transponder, stream, AC-3 |
|bgcolor=#efefef|Ok || Switch between display modes: basic, transponder, stream, AC-3 |
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|bgcolor=#efefef| |
|bgcolor=#efefef|Green || Select next audio track |
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| ⚫ | |||
|bgcolor=#efefef|Green || Select language (APID) |
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|bgcolor=#efefef|Back || Exit plugin |
|bgcolor=#efefef|Back || Exit plugin |
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| ⚫ | |||
|bgcolor=#efefef|(Right/Left) || (Switch to next/previous device that provides the current channel) |
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Revision as of 21:38, 15 February 2005
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
- DVB card
Software requirements
Installation
Options
| Option | Description |
|---|---|
| NTSC_SYSTEM=1 | added preliminary NTSC support |
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.
- Sometimes (read always) ttxtsubs plugin messes up the OSD - user should disable ttxtsubs, but closing and reopening the femon plugin might help temporarily as well. Btw., this same thing happens with OSDTeletext plugin too :)
- Disable the stream analysis 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.
- Shrinked OSD is available for NTSC users: make NTSC_SYSTEM=1
- The device switching feature is still non-functional.
Links
| [1] | http://www.saunalahti.fi/~rahrenbe/vdr/femon | Plugin homepage |