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Polycom HDX 8000 blurry video conferencing

kdbuchanan1
Occasional Visitor

Polycom HDX 8000 blurry video conferencing

I have an issue when video conferencing with Southampton and Prestwick.

 

When in a video conference the quality from Prestwick to Southampton is perfect quality and the quality from Southampton to Prestwick is washed out and appears blurry.

 

We have had our supplier Empower in to do some various tests but can't find any more faults.

 

Is there any help or advice you could give on this issue? If you require any more information please let me know.

 

Regards,

 

Kevin

Message 1 of 9
8 REPLIES 8
SpattieBall
Frequent Advisor

Re: Polycom HDX 8000 blurry video conferencing

Hi Kevin,

 

Please provide us with more information:

 

1) Have you tested a different Endpoint from the two specified locations

2) Does this happen between the two Endpoints or Regions only?

3) DO you receive packet loss on Tx or Rx?

4) Please also attach as much visual information as possible.

5) What Video Resolution is provided for both Tx and Rx from the Endpoint side that is providing the bad video transmission.

 

Kind Regards,

Message 2 of 9
acastro
Frequent Advisor

Re: Polycom HDX 8000 blurry video conferencing

Maybe QoS or duplex/speed negotiation on codec, switch, router....

André Castro,



Message 3 of 9
kdbuchanan1
Occasional Visitor

Re: Polycom HDX 8000 blurry video conferencing

Appologies for the late reply and many thanks for the response.

 

We have tested different cameras on both end points and regions and do not recieve packet loss.

 

I have attached a comparison made between sites.

 

Regards,

 

Kevin

Message 4 of 9
kdbuchanan1
Occasional Visitor

Re: Polycom HDX 8000 blurry video conferencing

Attachment for the above ^

Message 5 of 9
kdbuchanan1
Occasional Visitor

Re: Polycom HDX 8000 blurry video conferencing

Sit would not let me attach, here is the table:

 

Calls Connected:        
Call 1:  Call 2: 
  Transmit Receive     Transmit Receive  
B1 Call Speed: 384 K 384 K   Call Speed: 1920 K 1920 K  
B2 Call Speed: --- ---          
Video Protocol: H.264 H.264   Video Protocol: H.264 H.264  
Video Annex: --- ---   Video Annex: --- ---  
Video Format: CIF 4CIF   Video Format: CIF CIF  
Audio Protocol: G.722.1C G.722.1C   Audio Protocol: SirenLPR SirenLPR  
Errors (B1/B2): 0     Total Packets Lost: 0 0  
Sync (B1/B2): +     % Packet Loss: 0.00% 0.00%  
Call Encryption: Off     Call Encryption: AES-256 / DH-1024 / 2e65bdb44910316c    
Call Type: H.320     Call Type: H.323    
Audio Rate: 48 K 48 K   Audio Rate: 64 K 64 K  
Video Rate: 335 K 334 K   Video Rate: 1792 K 1792 K  
Video Rate Used: 276 K 313 K   Video Rate Used: 1636 K 1058 K  
Video Frame Rate: 25 30   Video Frame Rate: 25 25  
        Video Packets Lost: 0 0  
        Video Jitter: 7 ms 6 ms  
        Audio Packets Lost: 0 0  
        Audio Jitter: 3 ms 3 ms  
        Maximum Audio Jitter: 3 ms 3 ms  
Content Protocol: H.263 ---   Content Protocol: H.263 H.263  
  --- ---     --- ---  
Content Format: --- ---   Content Format: --- ---  
Content Rate: 0     Content Rate: 0    
Content Rate Used: 0 ---   Content Rate Used: 0 0  
Content Frame Rate: 0 -   Content Frame Rate: 0 0  
Content Packets Lost: 0 ---   Content Packets Lost: 0 0  
Video FEC Errors: 0     Video FEC Errors: 0    
Far Site Name: removed by mod     Far Site Name: SPACE CTC    
Far Site System: Polycom     Far Site System: Polycom/HDX 8000 HD/Release - 3.0.5-22695    
Far Site Number: removed by mod     Far Site Number: 10.127.25.10    
Message 6 of 9
acastro
Frequent Advisor

Re: Polycom HDX 8000 blurry video conferencing

 

It was Multipoin or Point to Point connection?

What is the endpoint and sw version at Call 1 ?

 

Notes...

Video Format - 

CALL 1 - TX CIF / RX 4CIF  

CALL 2 - TX CIF / TX CIF

 

Call Encryption

CALL 1 - OFF

CALL 2 - AES-256 / DH-1024 / 2e65bdb44910316c

 

 

André Castro,



Tags (1)
Message 7 of 9
petet
Trusted Contributor

Re: Polycom HDX 8000 blurry video conferencing

Hi Kevin.

Two things strike me as odd here.

AES encryption is off on one codec but on in the higher rate call.  Check both HDX8ks have AES set to "When available" in Admin>General>Security.

Not surprised you're getting CIF (352 x 288) in your 384k call but not in your 1920k call.  That should be at least 720p.

Check both Camera 1 setups set for "Sharpness". You have enough bandwidth to do HD @ 1920k @ 25frames per second at least. (Admin>Camera>Video Quality = Sharpness).

Software rev both units to V3.1.1.3.

Perhaps my Polycom colleagues could comment on the possible efficacy of employing the telnet command

config preferresolution 0 true

Message 8 of 9
feroz1234
Visitor

Re: Polycom HDX 8000 blurry video conferencing

 

We have HDX8000 and RMX 1500, DMI 700 and resource manager....

 

Problem that we find are listed below......

 

When we connect end point to end point,  there are no packet loss and resolution are as per call call rate....that means ....1024 k call 720 p resolution. But video rate it use 900 transmit and 600-700 receive....

but when we connect through RMX, the resolution falls down to CIF and video rate used transmit 800-900 but receive gets 200-300. Thus video at the endpoints gets distorted....

 

We prepared a lab test when we depicted the network under a microtick router under one cisco swicth( RMX, DMI,ENDpoints) and result are same.....

 

Need to advice to recover the situation......

Message 9 of 9