streaming vs external USB

[pashka]

Hi guys!
I recieved my C-200 few days ago and I have to say I'm pretty satisfied, bu there are still few unsolved issues...
My setup is: C-200 wired to Linksys 10/100 router which is connected to 2 PCs - one is wired and another one is wireless. Most of my media is located on external usb hard drive connected to wireless PC.
When I try to play 3-4 minute long MPEG-2 files (1920x1080, 40 Mbps, CBR) from this drive over the network the playback is awful, the picture freezes, the sound is off sometimes, video is stuttering. From wired PC I get the same result. For now the only way to get smooth playback is to play them from usb memory stick. DVD folders, DVD Images play fine over the network. MKV's play with some stuttering here and there. The same MKV's play fine from usb stick or exxternal hard drive connected to PCH.
From the answers on this forum I understand that 40 Mbps shouldn't be a problem. I'm a little bit frustrated.
Any suggestions?
Thanks

[Willem53]

40 Mbps should not be a problem if the complete delivery train is 40Mbps without any interruption... in your case that ain't so..
assuming you are streaming of a windows PC uste the windows taskmanager to check the network performance during playback.... every time you see the graph go below the avg Bandwidth of the movie it can stutter and if it doesn't do the peak bitrate during those scenes they will stutter also...

[pashka]

Thanks a lot. I'll check this.

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Task manager says, that the link speed is 54 Mbps and the internet (including working torrents) uses about 2.5 % of it... Is there a way to assign to this pc higher speed?

[pashka]

Tried to play MKV with average bitrate of 15 Mbps and the network usage never goes beyond 40% which seems to be sensible, but the movie still not playing smoothly...

[llaettner]

(11-28-2009 09:24 PM)Willem53 Wrote:  40 Mbps should not be a problem if the complete delivery train is 40Mbps without any interruption... in your case that ain't so..
assuming you are streaming of a windows PC uste the windows taskmanager to check the network performance during playback.... every time you see the graph go below the avg Bandwidth of the movie it can stutter and if it doesn't do the peak bitrate during those scenes they will stutter also...

I would guess that internal buffering would compensate for some network latency. . .

[pashka]

(11-29-2009 08:25 AM)llaettner Wrote:  I would guess that internal buffering would compensate for some network latency. . .

What is internal buffering? Can it be forced by some means?
Meantime I did some tests and discovered that although I have 54 Mbps channel both PCH streaming and file transfer to another PC take only up to 50% of this bandwidth... When streaming same 40 Mbps files from wired PC monitor shows about 45% usage and the file plays smoothly.
So I guess that the bottleneck is wireless connection, but still I don't understand why not to use all the bandwidth?

[Willem53]

(11-29-2009 09:36 AM)pashka Wrote:  What is internal buffering? Can it be forced by some means?
Meantime I did some tests and discovered that although I have 54 Mbps channel both PCH streaming and file transfer to another PC take only up to 50% of this bandwidth... When streaming same 40 Mbps files from wired PC monitor shows about 45% usage and the file plays smoothly.
So I guess that the bottleneck is wireless connection, but still I don't understand why not to use all the bandwidth?

are we talking WiFi?

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(11-29-2009 08:25 AM)llaettner Wrote:  I would guess that internal buffering would compensate for some network latency. . .

not for latency but for variable throughput, latency on a LAN should not exist.. contention for bandwidth between applications and between systems is mostly the issue....
This is one of the reasons I use USB drives on the PCH,

[pashka]

[QUOTE='Willem53' pid='295913' dateline='1259507729']
are we talking WiFi?

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I think it's WiFi. What are the other options?

[Willem53]

(11-29-2009 05:17 PM)pashka Wrote:  [QUOTE='Willem53' pid='295913' dateline='1259507729']
are we talking WiFi?

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I think it's WiFi. What are the other options?

UTP Ethernet Cable....

[pashka]

The other PC is wired with ethernet cable and the playback seems to be OK. So the problem is the wireless connection that for some unknown reason doesn't use the bandwidth correctly. Does anyone expierence same problem? Really need your help...
Thanks

[halfelite]

Because wireless does not travel in a straight line. It could bounce around a room 50 times before it gets to the other end. or it could bounce around twice. There is never a steady flow of bandwidth. Even if you are outputting at 45% the other end might only be getting at 20%.

Only way for wireless to work in streaming media. Is if you setup up directional antennas straight line of site wireless.

[pashka]

(12-01-2009 09:18 AM)halfelite Wrote:  Because wireless does not travel in a straight line. It could bounce around a room 50 times before it gets to the other end. or it could bounce around twice. There is never a steady flow of bandwidth. Even if you are outputting at 45% the other end might only be getting at 20%.

Only way for wireless to work in streaming media. Is if you setup up directional antennas straight line of site wireless.

That's sad The wireless PC is in another room and router sits in closed bookshelf. It's OK for the 3Mbps internet.
But why not to output at 100% instead of 45%. or at least 80% ?

[pashka]

OK. After a talk with some network guy I got an answer - GO WIRED!!! He explained to me that all this numbers like 54 Mbps are b...t. In real world you should be happy when you get 10. Hope this will be helpful