What is HDMI & What is DVI 

Thanks for explaining this as briefly and as simply as possible, i was trying to figure out why the audio wasn't working. thx

Read your question a couple times in an effort to understand exactly what answer will best aid you in your understanding so you can make your decision. Basically...you've bought a 32" high def TV & you want to connect "some" external high def source such as a High Def Cable TV set-top box or some other high def set-top box and/or a BluRay(also High def source) player etc. Any HDMI cable is fine. We need more info about your set-up and special goals (ie: 3D) to give a more detailed answer

Yes, there's is also some computer graphics cards and sources that do support output of audio using non-standard extensions to the spec via the DVI-D port and a DVI-to-HDMI adapter or cable.

THANKS that is a really useful video

How can u change dvi mode to hdmi mode when I go to hdmi2 it auto switches to dvi2 and there is no audio and how this happen it I moved my tv slightly and that just happened

Thanks!!!

Yes. 720 is considered High Definition. Please provide the Manufacturer Make & Model of TV and we will look up the specs on the TV. In order to enjoy / view a TV program in High Def 3 things are required: (1) An HD ready TV (2) An High definition source (3) The correct "type" of connection cable/wire connecting the HD Source to the HD ready TV. For more information on these 3 requirements we published the article, "How to Hook up TV". The link is below this RU-vid video

Sir when I was connecting to hdmi it is working as dvi and audio is not coming how to fix it..?