Poor video quality using windows 7 "play to" with DLNA Sony Bravia KDL-40EX700

When I use the option "play to" in windows media player 12, everything works but the video streams on tv is of very poor quality!

Most of the time the video is not yet play full screen. When I first set all and used television to find the video file, it played in the perfect resolution and quality, but now it does not matter if I have the video on the TV or choose play... two ways I get bad video quality.

Are there settings for the streaming video quality in windows 7? I have the current firmware for tv update and tried on two different computers with the same bad results.

What can I do to fix this?

Mr. Goetz,

There is nothing wrong with the drivers of your graphics card. The TV is one that makes the video file not the graphics card on your PC. The reason you have a bad video quality is the limited support of the multimedia formats that is supported by your TV. Generally, Sony's Bravia TVs have a limited set of media formats supported and for this reason, most of the time that the Play and Win7 will send transcoded versions of the video on television. Usually, the way Play works is the following:

-Play questions the TV for supported media formats

-If the TV supports the type of media you're trying to make, the Play sends native data flow to the TV. The quality will be provided by your video file.

-If the TV does not support the native format, the Win7 also offers versions of the same video file transcoded: MPEG-2 and WMV for versions.

-Play preffers to make reading possible at any time so he will choose a transcoded version if the native format is not supported. DLNA mandates support for MPEG NTSC or PAL MPEG formats, so this will be the common denominator.

I tested several Sony's Bravia televisions in the last years of the development of Play, and several times reading transcoded. I guess that this is the case for you as well. Unfortunately, nothing you can do, unless Sony decides to support your media file nativelly. To make things worse, the qulity of the transcoded version depends very much on the quality of native files (win7 transcode in a lower resolution than the native.) It will be not high-end). If the native file is HD content, the resolution of transcoded stream will be pretty good for a TV 40 ". If the stream resolution is SD or smaller than (usually flows that can be downloaded on BitTorrent), resolution transcoded will be less than that. On a big TV screen, it will be stretched and the quality will be very poor. More the native file resolution and the resolution of the TV, the bad will be your experience.

Therefore, could you please tell me what is your multimedia file type?

Hope this helps

Thank you very much

CCazang@MSFT

Tags: Windows

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