Streaming video freeze on wireless

Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware
Author Message
spumanti
DD-WRT Novice


Joined: 19 Jul 2006
Posts: 23
Location: Bornholm, Denmark

PostPosted: Wed Nov 01, 2006 12:12    Post subject: Streaming video freeze on wireless Reply with quote
Hi all you clever people out there!

I am experiencing a problem, that I have no idea how to solve, so I hope you can guide me to a solution.
I have tried to search the forum, but since i am not sure what the problem is, I have not found anything useful.

My problem is that when I'm watching a video streamed from my media server to my laptop, the video occasionally freezes.

Setup is as follows:

Media server (synology diskstation)--[LAN]--WRT54GL v. 1.1 (DD-WRT v23 SP2)--[wireless]--Laptop

Wireless connection: 128bit WEP.

The video freezes when the laptop is connected wirelessly to the router.
If i connect the laptop to the wired network instead of wireless, videoplayback works fine.

the video-freeze is not connected to signal quality/strength, as it happens both when the laptop is right next to the router, and when it is 3 rooms away.

It must have something to do with the wireless connection in some way.
I have tried to solve it by reinstalling windows XP on the laptop, as I thought it was a weird M$ problem! (didn't help!)

Any help would be greatly appreciated.

_________________
There's no place like 127.0.0.1
Sponsor
JohnnyPrimus
DD-WRT User


Joined: 26 Oct 2006
Posts: 378

PostPosted: Wed Nov 01, 2006 13:29    Post subject: Reply with quote
Do you happen to be using an 802.11b card? At 11mbps, with 128 wep enable, i don't think that there's enough available bandwidth to support much med-high bitrate video streaming....

If you're not, then perhaps someone smarter than I can shed some light...
spumanti
DD-WRT Novice


Joined: 19 Jul 2006
Posts: 23
Location: Bornholm, Denmark

PostPosted: Wed Nov 01, 2006 13:32    Post subject: Reply with quote
I am using a 802.11g wlan card in the laptop (54mbps).

But thanks for your reply anyway. Wink

_________________
There's no place like 127.0.0.1
hchady
DD-WRT User


Joined: 13 Jun 2006
Posts: 72

PostPosted: Wed Nov 01, 2006 22:29    Post subject: Reply with quote
hi,

it seems that you have a kind of packet loss

what is the transmit power that you are using ?
CTS ? franmebrurst ? are both disabled ?

try to play with WMM settings in wireless advanced
spumanti
DD-WRT Novice


Joined: 19 Jul 2006
Posts: 23
Location: Bornholm, Denmark

PostPosted: Sat Nov 04, 2006 13:14    Post subject: Reply with quote
Thanks hchady!

Transmit power is set to 28 mW.

CTS and Frameburst are both disabled.


I have tried to enable the WMM settings, and "admin forced" the Video and Audio from AP to Client.
Hopefully it will help. :)

I will return with the result once I have tested with the new settings. :idea:

My settings can be seen in the attached image.



WMM settings.jpg
 Description:
 Filesize:  110.49 KB
 Viewed:  11991 Time(s)

WMM settings.jpg



_________________
There's no place like 127.0.0.1
spumanti
DD-WRT Novice


Joined: 19 Jul 2006
Posts: 23
Location: Bornholm, Denmark

PostPosted: Sat Nov 04, 2006 21:56    Post subject: Reply with quote
Damn, It didn't work! Sad

The videoplayback still freezes when the laptop is connected wrelessly to the router.

Could it be something to do with TX errors on the wireless interface in the router?



Wireless Packet info.jpg
 Description:
 Filesize:  24.7 KB
 Viewed:  11974 Time(s)

Wireless Packet info.jpg



_________________
There's no place like 127.0.0.1
blabla2
DD-WRT Novice


Joined: 10 Jun 2006
Posts: 14

PostPosted: Sat Nov 04, 2006 22:56    Post subject: Reply with quote
Nope, the error ratio is ok.
The problem seems to be that your do not get enough constant througput.
Try to optizime reception be repositioning the atenna or the router or if that does not help using better antennas or turing up the transmit power.

The client should connect with stable 18mbit or more for good video performance. For HD video even more.
Cool Dude
DD-WRT User


Joined: 12 Aug 2006
Posts: 136

PostPosted: Sun Nov 05, 2006 6:25    Post subject: Reply with quote
Sad

Last edited by Cool Dude on Wed Nov 15, 2006 8:39; edited 1 time in total
donkthemagicllama
DD-WRT Novice


Joined: 20 Jun 2006
Posts: 9

PostPosted: Mon Nov 06, 2006 18:08    Post subject: Reply with quote
What playback SW are you using? I have similar problems using Quicktime on my Mac mini connected over wifi. If I use VLC instead, it has options to set the amount of buffering for files. If I increase this, I get perfect playback. The problem isn't the overall bitrate, but the occasional flakiness (i'm in an apartment building with probably 20 different wireless networks so there's all kinds of interference). Most playback software will only buffer for network streaming, but VLC will let you specify buffers for files as well.

On a side note, I do prefer quicktime, and if anyone knows how to get it to buffer when it's playing back from a file, I'd like to hear about it.
spumanti
DD-WRT Novice


Joined: 19 Jul 2006
Posts: 23
Location: Bornholm, Denmark

PostPosted: Tue Nov 07, 2006 7:59    Post subject: Reply with quote
Hi!

donkthemagicllama:
I'm using Bsplayer, as I like the UI of the player. I have had a look around in the settings for that player, but can't seem to find anything about buffer-size settings.

As you say, donkthemagicllama, I have also considered using VLC to play the videos.

-Will return later with the results.

Chuck D
I might have a look in that direction, although it is not distributed video as such. Just video stored on a Samba share on a embedded linux server. Accessing the video from a laptop running windows XP.
-but I will definately test it... anything that might help is great! :)

blabla2
OK, good to know about the error ratio.
The video freeze occurs regardless of the signal strength. The laptop can be right next to the router, and the "freeze" will still happen.
-so I don't think the signal strength is the "baddie!!"

Thanks fo all your replies

_________________
There's no place like 127.0.0.1
sunnyjpop
DD-WRT Novice


Joined: 27 Nov 2006
Posts: 5

PostPosted: Mon Nov 27, 2006 15:41    Post subject: Reply with quote
exact same trouble... I seem to be getting freezing on videos.. any ideas?

wwm on, wwm of, 54, 24, 11, auto multicast, increase the signal, decrease... whatever i do it always sputters in the first few seconds and then freezes.

Can anyone help or ay least help me figure out what I need to get help?
thank you
sj
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum