Portland, OR - Comcast - Page 164 - AVS Forum | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!



Forum Jump: 
 2Likes
Reply
 
Thread Tools
post #4891 of 4898 Old 02-21-2016, 10:12 AM
AVS Club Gold
 
Keenan's Avatar
 
Join Date: Aug 2003
Location: Santa Rosa, CA
Posts: 30,920
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1826 Post(s)
Liked: 1491
Quote:
Originally Posted by scowl View Post
A few of the sport channels are now MPEG4, like CBS Sports Network and the SEC Network. Others like Comcast Sport Network and Pac 12 Network are still MPEG2 for the moment. They're using about one third of the bitrate they were using before. Of course they look fine as far as I can tell.

They haven't switched over any of the 720p channels I watch.
One-third the bitrate and they look the same as before? That's rather remarkable.
Keenan is offline  
Sponsored Links
Advertisement
 
post #4892 of 4898 Old 02-21-2016, 11:34 AM
AVS Addicted Member
 
scowl's Avatar
 
Join Date: Nov 2003
Location: Portland, OR
Posts: 10,650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked: 38
Quote:
Originally Posted by Keenan View Post
One-third the bitrate and they look the same as before? That's rather remarkable.
MPEG4 is good at hiding faults. Also I'm watching basketball which is not good at showing compression problems. Maybe they waited until after football is over to start switching over to MPEG4.

I would say at this point that they look better. Some of the 1080i MPEG2 sports channels were on the edge of pixelization almost all the time. I'll keep watching to see if the motion looks blurry.

NOW: my post on AVS Forum.
NEXT: someone else's post on AVS Forum.
scowl is offline  
post #4893 of 4898 Old 02-21-2016, 11:45 AM
AVS Club Gold
 
Keenan's Avatar
 
Join Date: Aug 2003
Location: Santa Rosa, CA
Posts: 30,920
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1826 Post(s)
Liked: 1491
Quote:
Originally Posted by scowl View Post
MPEG4 is good at hiding faults. Also I'm watching basketball which is not good at showing compression problems. Maybe they waited until after football is over to start switching over to MPEG4.

I would say at this point that they look better. Some of the 1080i MPEG2 sports channels were on the edge of pixelization almost all the time. I'll keep watching to see if the motion looks blurry.
The SF bay area transition commences this coming Tuesday and hopefully, we'll see the same(or maybe better) as far as image quality. A poster in the Chicago thread has listed the MPEG4 channels matched to the frequency block/QAM they share and he's seeing as many as 10 MPEG4 HD channels per QAM.

Chicago thread post,
Spoiler!


Are you seeing similar channel groupings?
Keenan is offline  
post #4894 of 4898 Old 02-21-2016, 01:24 PM
AVS Addicted Member
 
scowl's Avatar
 
Join Date: Nov 2003
Location: Portland, OR
Posts: 10,650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked: 38
I don't have my cable hooked up to my PC so I don't know how channels are grouped.

One correction: the SEC ESPN Network is 720p and it appears to be the first 720p network to be switched to MPEG4. Its bit rate is 3.5 Mbps.

The MPEG2 720p sports channels still have a good bit rate, around 17 Mbps. So MPEG4 cuts the bit rate by over three fourths.

NOW: my post on AVS Forum.
NEXT: someone else's post on AVS Forum.
scowl is offline  
post #4895 of 4898 Old 02-21-2016, 02:14 PM
AVS Addicted Member
 
scowl's Avatar
 
Join Date: Nov 2003
Location: Portland, OR
Posts: 10,650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked: 38
Quote:
Originally Posted by scowl View Post
One correction: the SEC ESPN Network is 720p and it appears to be the first 720p network to be switched to MPEG4. Its bit rate is 3.5 Mbps.
Uh, correction to my correction (ugh!). The first 720p channel to be switched to MPEG4 was FXX. Right now it has a problem of freezing for a few frames whenever there's a change of scene. It's hard to watch.

NOW: my post on AVS Forum.
NEXT: someone else's post on AVS Forum.
scowl is offline  
post #4896 of 4898 Old 02-27-2016, 10:22 AM
AVS Special Member
 
Dartman's Avatar
 
Join Date: Oct 2004
Location: Oregon
Posts: 1,706
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Liked: 17
When I'm using video redo to edit my captures I can tell which ones are now MPEG 4 because I started using H264MKV container to save even more space and the MPEG2 stuff takes a long time to convert and the program says major recode required to warn you. The mpg4 stuff converts super quick and like Scowl said is usually averaging about 2meg a sec. Looks like all the channels you mentioned are set to 4 now, just doing a batch conversion now and see if anything new is low bitrate.
Dartman is offline  
post #4897 of 4898 Old 04-13-2016, 09:16 PM
Senior Member
 
danbfree's Avatar
 
Join Date: Mar 2007
Posts: 394
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 168 Post(s)
Liked: 76
Any chance they just converted some channels very recently, like today? I'm noticing sports channels that used to appear pixelated actually look better now... Also my newer X1 box was really slow today when I got home from work and I had to reboot it.
danbfree is offline  
post #4898 of 4898 Old 04-13-2016, 09:22 PM
AVS Addicted Member
 
scowl's Avatar
 
Join Date: Nov 2003
Location: Portland, OR
Posts: 10,650
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked: 38
The only sports channel I know is MPEG4 is CBS Sports Network.

Folks here can check if you give us a specific channel.

NOW: my post on AVS Forum.
NEXT: someone else's post on AVS Forum.
scowl is offline  
Sponsored Links
Advertisement
 
Reply Local HDTV Info and Reception

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off