Applications:

SageTV 4.0
SageTV Client 4.0
Screenshots:

 
Note: I only posted one screenshot of SageTV Client becuase it is
the same as SageTV with a few small diffrent from each other.
Testing:
WinTV-PVR 500MCE and tested ATI 550 Pro
MPEG Test using defaults setting
MPEG2 CVD (HalfD1), 352x480
MPEG2 MAX 12.0MBit/sec, FullD1 720x480
SVCD Extra Long Play, (HalfD1) 480x480
SVCD Long Play, (HalfD1) 480x480
SVCD Standard Play, (HalfD1) 480x480
DVD Extra Long Play, FullD1 720x480
DVD Long Play, FullD1 720x480
DVD Standard Play, FullD1 720x480
And all my Custom Profile
Some AVI, DivX, etc, etc
All the above formats work well in playback or live preview mode.
Test 24 hour non stop recording and not one time did it ever crash.

Bugs:
So far I haven't had any problem capturing or setting up
scheduled recordings, Playing MP3, DVD, Viewing Picture or even
just watching TV.
It seem to be very solid application.

Wish List:
  • Radio FM MP3 recording/scheduler support
  • Web Remote scheduleding
  • Better Visualization more like 3D Visualization (G-Force, Geiss 2, Smoke, MilkDrop)
  • Better ScreenSaver more like 3D Screensaver
  • Picture in Picture
  • Custom MPEG Add/Remove Modifying Quality Properties Panel

Conclusion:

SageTV new UI is much better looking then ver 3 with lot of other
improvement.
What I really like is that I can record in different MPEG qualities
for each scheduled recording yes even MPEG1 but Note: NO MPEG1
Timeshifting.
I just love the fact that I'm able to scroll through 2 weeks of TV
guide listings once the database is downloaded. I like the search
capabilities too and the favorites manager and there much more.
Do you just HATE scheduling conflict becuases you wanted record
another show at the time or need overlay 1min-/+ on the schedule
recording for editing, with the support of Multiple Tuners
on one PC say good bye to the miss part of the show or Multiple PC
as in Network Encoding with use of SageRecorder but only older PVR
250/350 or USB2 can be used.
I hear they add Soft MPEG Encoding/HDTV/DivX support but was not
able to test it being I don't have an HDTV nor DivX capture card.
The one thing I really like more then anything is the ICON Watch,
HD, 1st Run's, Archived, Don't Like, etc which is very useful.
Just so you know there even EPG Data Plugin's like XMLTV plugin if
you live outside of Canada or the U.S or tvtv for Europe.
There some undocumented features expanded configuration tweaks
by reading this post Unofficial Secret Extra V4 UI.
One thing I like about it is I can change channels on my
Cable box which makes it much easier to schedule recording
different shows on different channels thank to the USB-UIRT
Infrared which has more useful option for Multiple Tuners setup.
Best of all I can make use of REALmagic Xcard for REALtime Hardware
decoding which brings down system resource usage a lot also you
can use any of the other falling card like NetStream 2000,
NetStream 2000TV, NetStream 4000 plases take note DVD playback not
possable with REALmagic card most lee due to lack of full
DirectShow DVD Navigator support which is a major drag.
You can use just about any Software MPEG2 Decoder and can
make use of some video cards that support some MPEG Hardware
acceleration like DX9 VMR, iDCT, MC, etc, etc depend on your video
card you have.
Oh, and did I tell you it has DScaler Deinterlacer support and
along with a lot of other options too boot.
What really nice SageTV has on screen integrated weather reports.
SageTV can now play other Audio/Video format like ASF, WMA or WMV,
etc for playback and has cool Music Visualizations but not hard 3D
ver like what found in WinAMP and min other but it do.
Also you can add Channel logo which really add better over all fell
and look to it, So if want TV Logo's you get them rigth here.
What eles is cool is if you have MP3 with embedded Album Art it
will display the picture of that Album cover with use of
Musicmatch JUKEBOX Plus, Mp3 Tag Tools, Gotcha Covered,
The Godfather and there also build in Playlist functionality
as well min other useful option.
There also a Picture Player which also has one cool option like
3DFade, you can also set Slide Duration Time and are other option
to play with depend on how wish to set it up.
Just so you know SageTV also dbl as Server ocen it enadble.

SageTV Client new UI is much better looking then ver 3 with lot of
other improvement.
Best of all some of you love this SageTV Client it just like SageTV
but dose not support a TV card.
Streaming LiveTV, Per-Recording Video, Music and Picture and there
more to any PC on the your loacl network, plus it has on screen
integrated weather reports as well.
Also you can add Channel logo which really add better over all fell
and look to it.

Con's:

SageTV main limitation is the popup screen just start a Video or
Watch TV from the TV Guide but I find not to a big deal but some
people seem to hate it.
Lack FM Radio.
One other is a Web Remote scheduleding yes I know there a plug-in
but that has some downside you have know IP address of your SageTV
Server or host name which is ok if you a on local lan but so hot
if 1000's+ miles a way I like see the way BeyondTV has it.

Final Words:

Overall I'm very impressed with it right now and its overall
performance, so I giving it a 9.7/10.

I would like to point out that SageTV Studio come with SageTV now
so want take crack at Customization the UI or add new stuff be
sure to check out the SageTV SDK.