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More on the playback front...

I learned a bunch of things.

I learned that I can't run our wireless network on channel 1. That's where the interference is, even though my bridge's site survey says nobody else in the neighborhood is running any access points on channel 1 either. Crappy ping results across the bridge on channel 1 (>1400ms returns, lots of packet loss), quick results on channel 6 (<4ms returns, no packet loss). I get better response on a channel that I know at least one other access point is using. I blame it on 2.4ghz cordless phones.

I learned that SMB (CIFS) file sharing support in Ubuntu isn't great. The ReadyNAS supports NFS, so I can use that instead. It works much better.

I'm trying to figure out if there's a way to get better performance out of VLC Media Player and/or MPlayer. Right now it looks like the Pentium III/800 just hasn't got the oomph to render high bit-rate wmv or h.264 video and keep in sync with the audio. Of course, it didn't when I was running windows (well, not the h.264 at least). Any clues?

Comments

( 6 comments — Leave a comment )
howeird
Mar. 23rd, 2008 10:55 pm (UTC)
VLC is not tweaked well for H.264. I use VLC at work as my main player to view multicasts from our lab, and it usually blows up on H.264. I'm running it on Windows, so YMMV. ALso, Ubuntu probably doesn't have the kind of driver support for audio and video hardware that the big guys do, and that will mess up playback. I don't know if Elecard makes a linux player, but if they do that's your best bet.

As for 2.4GHz, you may still be hosed on Channel 1 by wireless devices which you aren't detecting because they've turned SSID broadcasting off, which I highly recommend you do as well. After you have made your connections, you don't have to invite the world in.

Edited at 2008-03-23 10:56 pm (UTC)
bovil
Mar. 23rd, 2008 11:19 pm (UTC)
I've never had SSID broadcast enabled. My bridge's site survey tool will detect devices that aren't broadcasting their SSID, they list as "hidden" in the table.

I've got a "restricted" Ubuntu Nvidia driver (from the manufacturer, it's not open-source which is why Ubuntu classes it restricted) for my display card. Audio is dirt-simple USB audio device.

The machine was slow on h.264 video decoding when it was still running Windows (haali splitter and ffdshow).
rebecca817
Mar. 23rd, 2008 11:16 pm (UTC)
What is your wireless router? We use a linksys and on channel one, it did not work for anything. We're also trying to get a windows XP box up and going so I can do some of my schoolwork on it because what I have to upload my answers to certain questions in, just won't accept Linux.
bovil
Mar. 23rd, 2008 11:20 pm (UTC)
Linksys WRT54G. Works like a dream on 6 now.
johno
Mar. 24th, 2008 05:44 am (UTC)
I remember reading something about 2.4ghz phones riding the lower end of the spectrum. Which would be in the Ch 1 zone.

galtine1
Mar. 24th, 2008 05:59 pm (UTC)
email Lamont Jones lamont@mmjgroup.com -- he may have an answer re: ubuntu as he was involved with it and is still involved with something related to it.
( 6 comments — Leave a comment )