[Live-devel] Re: video quality

jhkjh jkhjh fedora at post.com
Wed Dec 3 19:18:46 PST 2003


Thanks, that helps a lot. Can you suggested a TTL value for both the server (livemedia) and the client?
They are on different computers connected via 100Mbps
> 
> Message: 1
> Date: Tue, 02 Dec 2003 19:21:04 -0500
> From: "jhkjh jkhjh" <fedora at post.com>
> Subject: [Live-devel] video quality
> To: live-devel at ns.live.com
> Message-ID: <20031203002104.14709.qmail at mail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> I tried to unicast stream a MPEG2ES with liveMedia on the server side
> and Mplayer on the client side.
> It worked, but the quality was horrible (very blocky), same happened
> to VLC (CVS version).
> 
> Is that something to do with the livemedia server side library or the
> players on the clients? Any suggestion for better free players
> (either win/linux)?
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> ------------------------------
> 
> Message: 2
> Date: Tue, 02 Dec 2003 16:37:14 -0800
> From: Ross Finlayson <finlayson at live.com>
> Subject: Re: [Live-devel] video quality
> To: "LIVE.COM Streaming Media - development & use"
> 	<live-devel at ns.live.com>
> Message-ID: <6.0.1.1.1.20031202163206.02d6de90 at localhost>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> At 04:21 PM 12/2/03, you wrote:
> >I tried to unicast stream a MPEG2ES with liveMedia on the server side
> >and Mplayer on the client side.
> >It worked, but the quality was horrible (very blocky), same happened
> >to VLC (CVS version).
> 
> Does the same problem occur if you run the server 
> ("testMPEG1or2VideoStreamer"?) and the client player on the same computer?
> 
> For MPEG-2 video streaming, a 100 Mbps Ethernet (or higher) is 
> recommended.  If you're using just a 10 Mbps Ethernet, you'll likely 
> experience packet loss, which will cause the artifacts that you're seeing.
> 
> >Is that something to do with the livemedia server side library or the
> >players on the clients?
> 
> As another poster on this mailing list suggested last week, you could try 
> increasing
>          /proc/sys/net/core/rmem_max
> on your Linux client machine.  (Preferably, increase it to at least 
> 2,000,000 bytes, because that's what MPlayer tries to use for a socket 
> buffer size.)
> 
> 
> 	Ross Finlayson
> 	LIVE.COM
> 	<http://www.live.com/>
> 
> 
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> End of live-devel Digest, Vol 2, Issue 1
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