Youview picture too dark - On Demand buffering pro...

Hi - I'm new to Youview but not to BT Broadband. So when my Humax box arrived Thursday I had everthing installed and working with 20 minutes. I have a 3 year old Sony 32 inch Freeview TV (not latest tech but with HDMI) - so was looking forward to HD, on demand and programme recording - all in one package. So really disappointed with some of the basic problems.
i)The standard Freeview output from the Humax box is nowhere near as sharp as the Sony internal Freeview - and the picture is much much darker (from all sources, HD , on Demand). I have to increase brightness from 60% to 100% to get a similar picture -
ii)Despite resetting my home hub checking my broadband speed (6Mb) and all connections (and tunring off my PC and all other devices) every time I try and watch On Demand or Catch up I get significant buffering problems and picture freezing completely. This is across all th eplayers BBC ITV C5 ect.
iii)The Humax box has locked up twice while in buffering mode - and can only be sorted by turning power off. This has been of an eveing mostly - so the Broadband may be busier - but its either the Humax or the BT BB service. The same thing has happened in testing this morning.
Any ideas- is the picture issue fixable in the Humax box? And can anything be done to sort out the buffering on the various players - as this doesn't seem to be a Broadband service issue?
Solved!
Go to Solution.

Hi Chris - I was using powerline adaptors but tonight moved the BT hub downstairs and directly connected. Still the same buffering problems - even though the BT speed tests are consistently showing download speed of over 6Mb. - I have managed to get this up from 5Mbps by installing an iPlate and some minor wiring changes. The lock-up hasn't happened again though - but the 4oD service keeps telling me I haven't enough bandwidth. I've been testing the same show from Sunday night to keep parameter changes to a minimum. I have actually now connected my PC in the attic office back up using the powerline adapters in reverse - and am still getting download speeds to the PC at over 6Mbps! We don't have other PCs in use and I have turned off this PC when trying to use Youview on demand. So its is either the BT Home hub or broadband service that won't keep streaming at the download speed - or the Humax box and player apps that haven't got enough processing power to accept the data. I have just completed some more tests and at 10pm my speed had dropped to 5 mbps - but surely that should still be Ok to use on demand? Frustrating - and can't see an easy solution as I've deployed all the helpful hints and tips on the various forums.

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Color Space Data
: RGB
Profile Connection Space
: XYZ
Profile Date Time
: 1998:02:09 06:49:00
Profile File Signature
: acsp
Primary Platform
: Microsoft Corporation
CMM Flags
: Not Embedded, Independent
Device Manufacturer
: IEC
Device Model
: sRGB
Device Attributes
: Reflective, Glossy, Positive, Color
Rendering Intent
: Perceptual
Connection Space Illuminant
: 0.9642 1 0.82491
Profile Creator
: HP
Profile ID
: 0
Profile Copyright
: Copyright (c) 1998 Hewlett-Packard Company
Profile Description
: sRGB IEC61966-2.1
Media White Point
: 0.95045 1 1.08905
Media Black Point
: 0 0 0
Red Matrix Column
: 0.43607 0.22249 0.01392
Green Matrix Column
: 0.38515 0.71687 0.09708
Blue Matrix Column
: 0.14307 0.06061 0.7141
Device Mfg Desc
: IEC http://www.iec.ch
Device Model Desc
: IEC 61966-2.1 Default RGB colour space - sRGB
Viewing Cond Desc
: Reference Viewing Condition in IEC61966-2.1

Thanks a lot for helping me to track this down. Looking at EXIF information with EXIF tool I get:
Profile CMM Type
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Profile Version
: 2.1.0
Profile Class
: Display Device Profile
Color Space Data
: RGB
Profile Connection Space
: XYZ
Profile Date Time
: 1998:02:09 06:49:00
Profile File Signature
: acsp
Primary Platform
: Microsoft Corporation
CMM Flags
: Not Embedded, Independent
Device Manufacturer
: IEC
Device Model
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Device Attributes
: Reflective, Glossy, Positive, Color
Rendering Intent
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Profile ID
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Profile Copyright
: Copyright (c) 1998 Hewlett-Packard Company
Profile Description
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Media White Point
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Media Black Point
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Red Matrix Column
: 0.43607 0.22249 0.01392
Green Matrix Column
: 0.38515 0.71687 0.09708
Blue Matrix Column
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: IEC http://www.iec.ch
Device Model Desc
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Viewing Cond Desc
: Reference Viewing Condition in IEC61966-2.1
Viewing Cond Illuminant
: 19.6445 20.3718 16.8089
Viewing Cond Surround
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Viewing Cond Illuminant Type
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Luminance
: 76.03647 80 87.12462
Measurement Observer
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Measurement Backing
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Measurement Geometry
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Measurement Flare
: 0.999%
Measurement Illuminant
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Technology
: Cathode Ray Tube Display
Red Tone Reproduction Curve
: (Binary data 2060 bytes, use -b option to extract)
Green Tone Reproduction Curve   : (Binary data 2060 bytes, use -b option to extract)
Blue Tone Reproduction Curve
: (Binary data 2060 bytes, use -b option to extract)
XMP Toolkit
: Image::ExifTool 9.53
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