Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




235 posts

Master Geek
+1 received by user: 8


Topic # 195277 13-Apr-2016 10:29
Send private message

My setup is an older LG TV (720p) with a Chromecast (new, which supports 5G).

 

Internet is fibre with 100mbit download.

 

 

 

When watching Youtube and Netflix, the quality is perfect. You wouldn’t know if you were watching ‘normal TV’ or something streamed from the net to your Chromecast.

 

 

 

I’ve tried Sky Sports ‘Fan pass' and have been using them a few times.

 

It looks good. HD quality and no lagging, when streaming to Chromecast.

 

However, it doesn’t look exactly as smooth, as if you watch it on ‘normal TV’.

 

It’s hard to explain, but it’s like it’s using less frames.

 

From memory, even the ad breaks during a live game looks better. It's more when you watch the actual game, that it looks like it's using less frames.

 

 

 

Why is this? Just out of curiosity.

 

 

 

(I hope my question makes sense - I’m a novice)


Create new topic
562 posts

Ultimate Geek
+1 received by user: 138


  Reply # 1532407 13-Apr-2016 10:42
Send private message

Fanpass is 720 while Netflix is 1080 so a slight resolution drop. Maybe the TV has a sports motion mode that is compensating and the reduced resolution is effecting this slightly?

 

Here is some info  on motion blur that may help.




235 posts

Master Geek
+1 received by user: 8


  Reply # 1532415 13-Apr-2016 10:56
Send private message

OK, thanks.
It might be motion blur.

 
 
 
 


Try Wrike: fast, easy, and efficient project collaboration software
6602 posts

Uber Geek
+1 received by user: 531

Trusted

  Reply # 1532419 13-Apr-2016 11:08
Send private message

The TV shouldn't know it's watching sports content automatically though.

 

 

 

There was some debate about the framerate in use early on.  I saw a lot of what I call 'micro pauses' initially, but this all went away when I moved to the chromecast.

 

 

 

The other issue may be in the bitrate of the capture.  Sports can be extremely hard work to compress nicely, given often the whole frame is changing.  TV shows tend to be a slower pace, (on average), so a direct comparison to Netflix might not be completely apples for apples.


Also I noticed there was no quality option on the fanpass app recently, so there wasn't a way to force it to best like I'm sure there used to be.


6434 posts

Uber Geek
+1 received by user: 1571


  Reply # 1532422 13-Apr-2016 11:12
Send private message

streaming live tv is quite a bit different than streaming pre-loaded content.

 

Two main reasons

 

 

 

1)

 

The nature of sports streaming in most cases means lots more fast camera pans and tracking shots.  Lots of long shots with very small things moving quickly across the screen (golf balls, footballs etc). Compared to TV shows where there are many more static backgrounds, close ups with little movement (talking heads basically) sport streaming is a nightmare a nightmare to compress adequately.

 

 

 

 

 

2)

 

Netflix etc has loads of time between receiving the content and actually streaming it to do things like optimise the compression, check and double check the quality for each show etc.

 

With live tv, they have about 3 minutes between the event happening and it appearing on your screen - there is no time to correct errors, adjust for artifacts in the stream, send it back if it's bad, adjust the compression etc

 

 

 

So yes, I wouldn't expect the quality of a live streamed broadcast to be as good as ondemand.

 

 

 

 




235 posts

Master Geek
+1 received by user: 8


  Reply # 1532423 13-Apr-2016 11:14
Send private message

OK, thanks for the explanation.

20910 posts

Uber Geek
+1 received by user: 4108

Trusted
Subscriber

  Reply # 1532449 13-Apr-2016 11:21
One person supports this post
Send private message

Sky mangle everything to 50Hz, chromecasts only do 60, so anything in 50 has 10 duplicated frames per second. This screws up motion interpolation badly.

 

The decision to put 50Hz content onto the internet is an absurd one, but local broadcasters are still stuck in the mentality of "Herp derp must make everything 50Hz because that is what old analog broadcasts were" - Until google either sort chromecast out to change dynamically to 50 (Unlikly since they are a US company and TV's sold there generally will not support 50Hz) or sky stop butchering the frame rates to fit obsolete standards, this will happen.





Richard rich.ms

2090 posts

Uber Geek
+1 received by user: 848


  Reply # 1532452 13-Apr-2016 11:23
Send private message

Livestream NRL is also MUCH better quality that SKYGO in my experience - but even that varies.

 

 

 

Unsure if that is due to different source networks or just planetary alignment.


Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Opera launches new mobile browser: Opera Touch
Posted 25-Apr-2018 20:45


TCF and Telcos Toughen Up on Scam Callers
Posted 23-Apr-2018 09:39


Amazon launches the International Shopping Experience in the Amazon Shopping App
Posted 19-Apr-2018 08:38


Spark New Zealand and TVNZ to bring coverage of Rugby World Cup 2019
Posted 16-Apr-2018 06:55


How Google can seize Microsoft Office crown
Posted 14-Apr-2018 11:08


How back office transformation drives IRD efficiency
Posted 12-Apr-2018 21:15


iPod laws in a smartphone world: will we ever get copyright right?
Posted 12-Apr-2018 21:13


Lightbox service using big data and analytics to learn more about customers
Posted 9-Apr-2018 12:11


111 mobile caller location extended to iOS
Posted 6-Apr-2018 13:50


Huawei announces the HUAWEI P20 series
Posted 29-Mar-2018 11:41


Symantec Internet Security Threat Report shows increased endpoint technology risks
Posted 26-Mar-2018 18:29


Spark switches on long-range IoT network across New Zealand
Posted 26-Mar-2018 18:22


Stuff Pix enters streaming video market
Posted 21-Mar-2018 09:18


Windows no longer Microsoft’s main focus
Posted 13-Mar-2018 07:47


Why phone makers are obsessed with cameras
Posted 11-Mar-2018 12:25



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.