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IDProjectCategoryView StatusDate SubmittedLast Update
0402DN372Tgeneralpublic10 Jul 15 17:1710 Jul 15 17:17
ReporterFutaura 
Assigned To 
PrioritynormalSeveritymajorReproducibilityalways
StatusnewResolutionopen 
PlatformTalkTalk YouView+OSHuaweiOS VersionDN372T
Product Version72.36.69 
Target VersionFixed in Version 
Summary0402: Poor upscaled Freeview SD video quality
DescriptionCompared with the many other Freeview HD devices that I have in my possession, the picture quality is extremely poor when watching any Freeview SD channel (HD channels are OK). The DN372T is outputting at 1080p, so clearly it is upscaling the 576i SD content to 1080p, but it appears that the upscaling algorithm is well below par. The image quality is terrible (grainy and pixelated) and was one of the first problems that I noticed.
 
It is not a tuning/signal issue and video processing settings on my TV are set identically on different inputs. So, it is clear that the DN372T is extremely bad at upscaling SD content, or the DVB-T decoder is of poor quality.
Steps To ReproduceConnect the DN372T to a large TV (suggest 42" or larger), set output mode to 1080p and tune to any Freeview SD channel.
Additional InformationI've attached 4 photos - the first two are from the DN372T and the second two from a "budget" Vestel/Bush/Hitachi unit, both outputting at 1080p. I've paused Channel 5 on both boxes at the exact same frame for comparison purposes. At first glance you might not see much difference, but look at the difference in image quality on the score board and Andy Murray's outline (notice the jaggies on the YouView box, whereas it is much smoother on the Vestel box). These issues are far more obvious, and emphasised, when playing video at normal speed.
TagsNo tags attached.
Attached Filesjpg file icon IMG_20150708_173643.jpg (2,924,372 bytes) 10 Jul 15 17:17
jpg file icon IMG_20150708_173413.jpg (3,413,344 bytes) 10 Jul 15 17:17
jpg file icon IMG_20150708_173627.jpg (2,790,202 bytes) 10 Jul 15 17:17
jpg file icon IMG_20150708_173338.jpg (3,263,917 bytes) 10 Jul 15 17:17

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- Issue History
Date Modified Username Field Change
10 Jul 15 17:17 Futaura New Issue
10 Jul 15 17:17 Futaura File Added: IMG_20150708_173643.jpg
10 Jul 15 17:17 Futaura File Added: IMG_20150708_173413.jpg
10 Jul 15 17:17 Futaura File Added: IMG_20150708_173627.jpg
10 Jul 15 17:17 Futaura File Added: IMG_20150708_173338.jpg


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