This tabs allow configuration of several general parameters that affect the core TVH functionality.




Language Settings
Default Language(s)
Select the list of languages (in order of priority) to be used for supplying EPG information to clients that don't provide their own configuration.

The EPG information is NOT translated, this only applies to EPG providers that give information (titles, descriptions, etc..) in multiple languages.



DVB Scan Files
DVB scan files path:
Select the path to use for DVB scan configuration files. Typically dvb-apps stores these in /usr/share/dvb/. Leave blank to use TVH's internal file set.



Time Update
Tvheadend has a built-in capability to update the system time. However, you should bear in mind that DVB time is not highly accurate and is prone to both jitter and variation between different transponders.

Where possible, it's probably still better to use an internet based NTP source to synchronise the system clock (i.e. through the underlying operating system).
Update time
Enable system time updates. This will only work if the user running TVH has rights to update the system clock (normally only root).
Enable NTP driver
This will create an NTP driver (using shmem interface) that you can feed into ntpd. This can be run without root priviledges, but generally the performance is not that great.
Update tolerance (milliseconds)
Only update the system clock (doesn't affect NTP driver) if the delta between the system clock and DVB time is greater than this. This can help stop horrible oscillations on the system clock.



Transcoding
If enabled at build time (src/plumbing/transcoding.c), this allows you to switch transcoding support on and off.



Image Caching
This will cache any channel icons or other images (such as EPG metadata) to be served from the local webserver. This can be useful for multi-client systems and, generally, to reduce hits on upstream providers.
Enabled
Select whether or not to enable caching. Note: even with this disabled you can still specify local (file://) icons and these will be served by the built-in webserver.
Re-fetch period (hours)
How frequently the upstream provider is checked for changes.
Re-try period (hours)
How frequently it will re-try fetching an image that has failed to be fetched.
Ignore invalid SSL certificates
Ignore invalid/unverifiable (expired, self-certified, etc.) certificates