Dish HD compression/How can I post a screenshot?

[ehren]

How can I transfer a picture from my 211 DVR to this site? It's paused right now during the Blackhawks/Tampa bay NHL game from Comcast Sportsnet Chicago on 429.

All you see is the blackhawks logo and then it goes back to a faceoff and the screen just completely is a blur, all the players, the ice, the plexiglass in the background. The blackhawks logo was just filled with pixelation galore. Anyone watching this game? it was with 1:50 left in the 2nd period.

If people say that 7 channels per transponder is decent, you people need to be shot! This is sick looking.

 

[kstuart]

Screenshots have nothing to do with what digital video looks like.

This is because digital video is lossey - it is dependent on the missing information not being noticeable (99% is missing). So, there is always going to be still images that look bad, because suddenly you can notice what you do not notice normally.

If Dish used lossless video, then they would get one HD channel per satellite.

PS I am watching Comcast Bay Area HD right now, and it looks as good or better than any other HD channel. No pixelation or blur.

So, it is probably a problem with the broadcast itself.

 

[ehren]

Whatever channels share bandwidth with CSN-Chicago must have had NBA/NHL or College games end before the Blackhawks game is over b/c it looks better in the 3rd period now. This is why Dish has too many channels per TP. But they don't care and unless I drive to Colorado and put a gun to the enginnering staff, maybe something will get changed!

ESPN had highlights of the FSN-HD college basketball games from Sunday night and it was amazing how soft they look on Dish channels 441-443 vs. how clear they were on ESPN-HD

 

[Bobby H]

Uncompressed HD video -like what is stored on broadcast master tapes, runs in bandwidths between 1 billion and 3 billion bits per second. The rate varies in terms of frame rate (24p, 30p, 60i, etc.) and color depth (4:2:0, 4:4:2 or even 4:4:4).

No one on any sort of cable or satellite service is even getting anywhere near Blu-ray quality in terms of HD video, much less higher standards like DCI-compliant 2K D-cinema or uncompressed HD. The only place anyone is going to see pristene master-grade HD quality is if they're looking at the original master video image in a post production edit suite or some other professional broadcast or video production facility.

To go a little farther about ridiculous screenshot "science," any such practices are flawed through the fact any HD video stream supplied by cable, satellite and even Blu-ray relies very heavily on inter-frame compression techniques. The only way you're seeing a complete video image with MPEG-2, VC1 or AVC is by watching it in motion. Still images are invalid for purposes of judgment.

The only data compressed video format worthy of any still image examination is Motion JPEG2000. That's the video format used by most digital cinema equipped movie theaters. The video stream really isn't video at all. It's just a giant container holding many thousands of mildly compressed still images using the latest JPEG standard. No inter-frame compression is allowed in Digital Cinema Initiative standards. They also set limits on the amount of compression tiles that can be encoded into the imagery. That's usually no more than 3 tiles. Of course, we see many dozens of blocky tiles in highly compressed digital video. Motion JPEG2000 is not practical for cable or satellite delivery because it runs at bandwidths up to 250Mb/sec. That's 5 times the max. bandwidth of Blu-ray.

 

[ehren]

Screenshots have nothing to do with what digital video looks like.

This is because digital video is lossey - it is dependent on the missing information not being noticeable (99% is missing). So, there is always going to be still images that look bad, because suddenly you can notice what you do not notice normally.

If Dish used lossless video, then they would get one HD channel per satellite.

PS I am watching Comcast Bay Area HD right now, and it looks as good or better than any other HD channel. No pixelation or blur.

So, it is probably a problem with the broadcast itself.

It's pretty easy to notice it in real time that's for sure. it's the whole reason I went back and paused it to know how confident I am with my 100/100 vision.

LOL, how does your CSN-Bay Area SD look these days? I have the sports pak and it is just horrible how washed out it looks, just like the Rogers Sportsnet Canadian broadcasts of the NHL games on Center Ice. Turn on channel 634 and 635 during action tonight.

 

[ehren]

Uncompressed HD video -like what is stored on broadcast master tapes, runs in bandwidths between 1 billion and 3 billion bits per second. The rate varies in terms of frame rate (24p, 30p, 60i, etc.) and color depth (4:2:0, 4:4:2 or even 4:4:4).

No one on any sort of cable or satellite service is even getting anywhere near Blu-ray quality in terms of HD video, much less higher standards like DCI-compliant 2K D-cinema or uncompressed HD. The only place anyone is going to see pristene master-grade HD quality is if they're looking at the original master video image in a post production edit suite or some other professional broadcast or video production facility.

To go a little farther about ridiculous screenshot "science," any such practices are flawed through the fact any HD video stream supplied by cable, satellite and even Blu-ray relies very heavily on inter-frame compression techniques. The only way you're seeing a complete video image with MPEG-2, VC1 or AVC is by watching it in motion. Still images are invalid for purposes of judgment.

The only data compressed video format worthy of any still image examination is Motion JPEG2000. That's the video format used by most digital cinema equipped movie theaters. The video stream really isn't video at all. It's just a giant container holding many thousands of mildly compressed still images using the latest JPEG standard. No inter-frame compression is allowed in Digital Cinema Initiative standards. They also set limits on the amount of compression tiles that can be encoded into the imagery. That's usually no more than 3 tiles. Of course, we see many dozens of blocky tiles in highly compressed digital video. Motion JPEG2000 is not practical for cable or satellite delivery because it runs at bandwidths up to 250Mb/sec. That's 5 times the max. bandwidth of Blu-ray.

and whenever Charlie gets a hold of that he will cram 7x the # of channels.