Re: Channels switched to MPEG4
 

On which channels?

Re: Channels switched to MPEG4
 

I recall someone, I don't want to misquote someone or attribute it to the wrong person, saying MPEG4 compression algorithms can't reproduce 720x480 resolution spot-on so they do 704x480 (or similar) since there is no point in going slightly bigger, and it's closest resolution.

If this is true it could explain it. MPEG4 compression apparently works better on reproducing other common higher resolutions so maybe with HD becoming the norm many in the industry think the trade-off is worth it for the remaining SD channels as it simplifies their infrastructure and lowers costs by running as few codecs on networks as possible.

Re: Channels switched to MPEG4
 

That was me, explaining why the picture is slightly cropped on some channels. I doubt you would notice a PQ difference between 720 and 704

Re: Channels switched to MPEG4
 

As I only watch sport it will be on the Sky Sports channels - when I said PQ deterioration I mean the picture breaks up.

This has been noticeable on a number of the Cricket World Cup matches when watching live. (So mainly 504)

Re: Channels switched to MPEG4
 

Oh, that's probably a signal fault. You need a technician visit.

Re: Channels switched to MPEG4
 

Sorry if this has been mentioned elsewhere in thread but is this move why the sides of pictures are cut off? Really annoying on sport where the home team name is now missing on Ozzie rules matches.

I know my TV doesn't like HD and switches to 4:3. It does this most channels now. SD is our choice as we don't have HD TV and recording take far less space.

Re: Channels switched to MPEG4
 

Literally a couple of posts above:

Re: Channels switched to MPEG4
 

You may be correct.

I have managed to narrow it down a bit - mostly when a roving (presumably hand-held) camera is being used instead of the main cameras

Re: Channels switched to MPEG4
 

well that would be a problem from source. Possibly there is too much camera movement to encode cleanly. Can you get me a screenshot of the problem?

Re: Channels switched to MPEG4
 

I will try to next time I see the problem.

Re: Channels switched to MPEG4
 

Media Boy HQ has found two unknown channels testing on CO68:

Channel A is broadcasting nothing
http://www.digitalbitrate.com/dtv.ph...&sec=0&lang=en

Channel B is broadcasting RealLives
http://www.digitalbitrate.com/dtv.ph...&sec=0&lang=en

Both appeared on Thursday Night.

http://www.digitalbitrate.com/dtv.ph...ng=en&mux=C068

Re: Channels switched to MPEG4
 

Intriguing. I thought I looked on DBR on Friday... obviously I didn't or I need my eyesight checked.

Ta, MB. :)

Re: Channels switched to MPEG4
 

We found some HD Channels did move to an new steam last night. They move from CO35 to CO67.

Animal Planet HD
More4 HD
ZooMoo HD

We has to re-Add them to our Favourites.

The rest was

Sky Thriller HD
Sky Action HD
Sky Sports Football HD
SONY MAX HD

Plus an Stream has close - Virgin are now running 42 streams in our area.

Re: Channels switched to MPEG4
 

Probably why I've just had to re-add SS Football HD to my favourites.

Re: Channels switched to MPEG4
 

"Channel A" has started to broadcast we think it Sky Witness +1

All the other BBC Red Button Channels are now broadcasting a "We'll be back" sign.