diff --git a/docs/docresources/configdvrtab.png b/docs/docresources/configdvrtab.png index 8d0a52fa..834a1ff2 100644 Binary files a/docs/docresources/configdvrtab.png and b/docs/docresources/configdvrtab.png differ diff --git a/docs/html/config_dvr.html b/docs/html/config_dvr.html index 68a44ee7..ef265ebd 100644 --- a/docs/html/config_dvr.html +++ b/docs/html/config_dvr.html @@ -20,21 +20,26 @@
Select the container format used to store recordings.
Cache scheme -
Select the cache scheme used to store recordings. - +
Select the cache scheme used to store recordings. Leave as "system" unless you have a special case for one of the others. +

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Whenever you read or write data to the filesystems, the information is kept (cached) in memory for a while. This means that regularly-access files are available quickly without going back to the disc; it also means that there's a disconnect when writing between the write request (from the application) and the actual write itself (to the disc/storage) as changes are buffered to be written in one go.
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System -
Standard system caching. - -
Do not keep -
Do not keep the stored data in system's cache. - -
Sync -
Sync the stored data with medium (disk). - -
Sync + Do not keep -
Combination of two above variants. +
Unknown
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A placeholder status, meaning that the configuration isn't properly set.
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System
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Change nothing and rely on standard (default) system caching to behave as it normally would.
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Do not keep
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Tell the system that you're not expecting to re-use the data soon, so don't keep it in cache. The data will still be buffered for writing. Useful e.g. in a RAM-limited system like a Pi (given that you're unlikely to be watching while recording, so data can be discarded now and read back from disc later).
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Sync
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Tell the system to write the data immediately. This doesn't affect whether or not it's cached. Useful e.g. if you've a particular problem with data loss due to delayed write (such as if you get frequent transient power problems).
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Sync + Do not keep
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A combination of last two variants above - data is written immediately and then discarded from cache.