[mythtv] [Draft] Filter documentation.

[Bruce Markey]

Robert Kulagowski wrote:
>> - The "linearblend" filter
>>
>> This is the filter that is used when "Deinterlace playback" has been
>> checked.  It is a simple deinterlacing filter that ignores parameters,
>> and works by blending adjacent lines.  It replaces combing in interlaced
>> video with a less distracting "ghost" image.
> 
> 
> Do we need to say anything about not checking "Deinterlace Playback" if 
> specifying the linearblend filter?  How does using the Deinterlace 
> Playback checkbox interact with a filter chain?  Is it cumulative?

Updates for this and hardward encoders attatched.

--  bjm


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Index: docs/mythtv-HOWTO.sgml
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RCS file: /var/lib/mythcvs/mythtv/docs/mythtv-HOWTO.sgml,v
retrieving revision 1.208
diff -u -r1.208 mythtv-HOWTO.sgml
--- docs/mythtv-HOWTO.sgml	30 Jan 2004 04:10:12 -0000	1.208
+++ docs/mythtv-HOWTO.sgml	30 Jan 2004 20:50:57 -0000
@@ -2491,9 +2491,10 @@
 and enter filter strings in the "videofilters" column.
 
 Playback filters are per-host and apply to any recording you watch from the
-frontend where filters have been applied. From "mythfrontend" go to
-Setup->TV Settings->Playback. Enter your filter string in the box titled
-"Custom Filters".
+frontend where filters have been applied. Playback filtering can only
+work with software decoding so the viaslice, xvmc, and ivtv outputs ignore
+filters entirely. From "mythfrontend" go to Setup->TV Settings->Playback.
+Enter your filter string in the box titled "Custom Filters".
 
 <sect2>Currently Available Filters
 <p>o  The "invert" filter
@@ -2504,10 +2505,14 @@
 
 o  The "linearblend" filter
 
-This is the filter that is used when "Deinterlace playback" has been
-checked.  It is a simple deinterlacing filter that ignores parameters and
-works by blending adjacent lines.  It replaces combing in interlaced video
-with a less distracting "ghost" image.
+It is a simple deinterlacing filter that ignores parameters and works by
+blending adjacent lines.  It replaces combing in interlaced video with a
+less distracting "ghost" image.
+
+NOTE: This filter is appended to the filter chain when "Deinterlace
+playback" has been checked. If you use "kerneldeint" or "linearblend"
+for deinterlacing in your filter string, you should not check
+"Deinterlace playback".
 
 o  The "kerneldeint" filter