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Home NAS media server playing through Mac Mini's - video choppy

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skytop

Junior Member
I have set up a LAN media server and my video stream is choppy. DVDs are backed up as .iso files on Synology 410j. Using plex on mac mini's to play. LAN is gbit.

If I play compressed/smaller files (mp4/mkv), video streams fine. I also had done a test setup before setting up the entire system, which also played fine. I would think gbit speed is more than sufficient to play movies that are 4-5 gb in size.

Any ideas? Is there a way to test my network speed? issues/settings that impact this?
 
You really haven't given us anything useful to diagnose the problem. Network speed? Why .iso? ISO format is not really a streaming format like .mkv etc. A quick look at the Synology site says the specs should be able to handle it but there are complaints in the forums about poor video performance. Size of the file doesn't mean anything, it is the streaming rate that counts.
 
just ran a LAN speed test and had 145mbps write speed and 345mbps read speed. Am using .iso to capture full dvd contents and highest quality. what would be a better format at the highest quality? what other information would help?
 
running on ethernet cable. have not tried separately identifying the .vob and playing it - plex media server identifies and plays the .iso
 
skytop said:
running on ethernet cable. have not tried separately identifying the .vob and playing it - plex media server identifies and plays the .iso
Click to expand...

The thing is, depending on how the .iso is built, the through put of the network may not matter. .ISO isn't a streaming format and if the information inside it is not layed out well, the NAS might be doing a lot of disk seeks to pull the information along with the .ISO formats own overhead. The .VOBs are raw interleaved MPEG1 or MPEG2 video. You need to try something like that first to see if you are simply overloading the NAS. That unit has an 800mhz proc which is decent for a small NAS but they wrecked it with only 128MB of RAM. It simply might not be able to keep up if the seeks are high.
 
thanks, will try that. What would you suggest as video file format that keeps the quality of the original .iso or dvd file?
 
skytop said:
thanks, will try that. What would you suggest as video file format that keeps the quality of the original .iso or dvd file?
Click to expand...

It isn't so much the format as the encoding settings. I have had several MKV files that look fine even at high def but the files were about 1/3 the size as on the DVD. You can rip the raw MPEG2 streams off the DVD if you wanted as well. Generally you should do the rips yourself if you want them to look better.
 
I tried playing vob files in dvd player, and they worked fine. also played videos through xbmc and they worked fine, so must be a plex problem. Anyone experience this before?
 
You can login into your synology admin/dsm and check out the Resource Monitor. Check to see if cpu and memory usage are ok.
 
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