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Windows Server Forum / Windows Media Server / July 2008Windows Media Streaming - playback VERY choppy
I have a pretty large WMV file - about 100MB at 1080i. I don't seem to see a big difference in where it pauses if I just link to the file via http or if I use Windows Media services. It will pause about every 10 seconds and rebuffer. I have a T3. Any recommendations short of lowering the resolution? I'm testing on right now when we have virtually no traffic on our network. The server has just about everything I can find set for unlimited and cached. The server has 24 GIGs of memory, a quad core 3 GHz processor and tons of fast storage. Network, processor and memory utilization barely register when I playback a file. My PC has a 5Mbit connection to the internet, a 3GHz core 2 processor, tons of free disk space and 2 GIGs of RAM and 512MB 8800 video card (no problem playing the file locally) - The most utilization I'm seeing is CPU at 24%., memory at 900MB and network at 5% > I have a pretty large WMV file - about 100MB at 1080i. I don't seem to > see a big difference in where it pauses if I just link to the file via http [quoted text clipped - 9 lines] > locally) - The most utilization I'm seeing is CPU at 24%., memory at 900MB > and network at 5% It is your connection to the Internet, or the servers connection to the internet; not the server hardware. Are you certain that your server has enough bandwidth? We have 1.5 gig files that hundreds of users view concurrently Your '5 mbps' connection to the internet is not truly 5 mbps to the streaming server. Additionally, there is latency that also results in reduction in throughput. Try ftp'ing the file down to you, and see what your download speed is from your server Even on the same lan segment going through a gigabit switch it is choppy. At home my download speed of files from that server is 660 KB/s. Do you have any 1.5 Gig files that are at 1080i? I can see bigger video files at lower resolution with no issue. >> I have a pretty large WMV file - about 100MB at 1080i. I don't seem to >> see a big difference in where it pauses if I just link to the file via [quoted text clipped - 23 lines] > Try ftp'ing the file down to you, and see what your download speed is > from your server FYI - I put the ORIGINAL full 1080i version of this file on my server for testing (not this low res copy). If you have the 1080i version feel free to put it on your server and test. The original file is about 100 MB and called Coral_Reef_Adventure_1080.wmv >> I have a pretty large WMV file - about 100MB at 1080i. I don't seem to >> see a big difference in where it pauses if I just link to the file via [quoted text clipped - 23 lines] > Try ftp'ing the file down to you, and see what your download speed is > from your server |
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