Streaming TV on the 7400

Forums › Mobile handsets › Streaming TV on the 7400

Felix

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#3867 14-Apr-2005 18:18

Has anyone else used this? What do you think? I find the weather updates useful!! (And free is good too!!)

cellman

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#14189 15-Apr-2005 08:47

All the fast moving streams look bad, you can not see a thing, they need to up the encoding, As the device is using 1x to stream you should be able to have the encoding somewhere between 60 -70 K , Telecom say you will get somewhere between 60 - 80k on 1x. so why don't they stream at that speed....

Jama

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#14190 15-Apr-2005 08:59

Because everyone is sharing bandwidth you can not assume that everyone will be able to stream at 60-80kbps. Lowering the bitrate means more people can use the service.

....Mobile data is not an infinite resource Cellman!

Felix

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#14191 15-Apr-2005 09:44

Thanks Jama, that's exactly right!

It's not so much to do with bandwidth, it about a balance between the encoding rate / the handset processor, the media player, the streaming server, the load on the cellsite, and to some degree the bandwidth...

Some of the more complex images are a little pixilated, but this will be addressed as time goes on!

F5

alasta

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#14194 15-Apr-2005 13:27

So, in a nutshell, video streaming is infeasible on anything that doesn't support CDMA EV-DO?

Felix

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#14195 15-Apr-2005 13:54

No, that’s not it at all... sure the experience will be better, but the current 1xrtt implementation is fine! And it will improve as the content is tweaked!

International experience show that EV-DO is far better than UMTS for video... time will tell I guess

cellman

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#14196 15-Apr-2005 14:20

It must have everything to do with bandwidth. According to Qualcomm the QTV part of the chipset can handle a lot higher bitstreams and the processing of the Handset should not be the issues because the decoding is done by the chipset. If the streaming server is anything like the one at Xtra. it can handle very high volumes , like on extra broadband sites. So the low encoding of the streams cause poor quality must be to do with the 1 x data capacity. Which Telecom on there own website state that it should be beween 60 -80 on average. So why is it not encode for that rate

cellman

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#14198 15-Apr-2005 14:35

just found some more facts.
Qualcomm Quote " High performance decoding 15-30 fps at 32kbps - 384kbps" Now i know we can not go to 384Kps . But doing some encoding in Quicktime with similar type of content around 50K plus would be good. Because when people start pay for these streams they are not going to be happy with what they get.

Also i have noted why using it they i get a network error which more or less states acording to spec they allthe current conections are in use . How many people can stream at once???

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Felix

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#14199 15-Apr-2005 14:36

Good logic! Though not very useful in this conversation!

The server is not "like the ones they have at Xtra", and this assumption is where you start to slide.

Qualcomm say a lot of things, experience has proved many of them wrong. Whilst the chipset may be able to decode at a certain rate, there are several other factors to take into account. Such as CPU speed, battery power, cell site load, network prioritisation and so on. Another part of the process involves the version of QTV that has been loaded.

So whilst bandwidth has something to do with it, it is just a part of several factors that have to be taken into account....

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cellman

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#14201 15-Apr-2005 14:39

It sounds to me that it has nothing to do with the handset as the Sprint network encods at 50K plus, it must be all to do with the network and the lack of capacity. Why lauch a service if you don't have the capacity to deliver it at quality

Felix

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#14202 15-Apr-2005 14:41

Ok, well can't comment on similtanious connections, but the point is that the service will be tweaked and improved prior to anyone paying for it. So the comment that people will be disappointed is not relevant.

It's free, it's there, it will improve, and you might learn from this experience that brochure ware is often not the best source of information...

F5

Felix

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#14203 15-Apr-2005 14:43

according to my contacts at sprint, they encode at a much lower rate than that... and a lot lower than Telecom...

cellman

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#14204 15-Apr-2005 14:51

you must work for TNZ ahh????

Felix

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#14205 15-Apr-2005 14:56

I was thinking the same about you! Call centre or retail?

tonyhughes

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#14220 16-Apr-2005 13:10

I think there is lots of Telecom lurkers here :-).

I think the streaming video service is great. Any bugs are covered by the fact that the service is free. Once you have to pay for it, then thats the time to start moaning about problems with the service.

jpwise

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#14269 20-Apr-2005 13:43

Lots of industry lurkers full stop. :)

On a sidenote, the video from the 7400 (captured etc) isn't actually too bad a quality considering the filesizes. You do need Quicktime to play it however, but the encoding is pretty good you look at it in terms of the size. The file format they're using is 3GP2 from memory. There's some info on it at : http://www.3gp.com/

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