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One thing I notice is that XBMC output via ATV2 at 720@60p while the same content output via XBMC on my Revo box at 720P@24p.
I haven't figured out how to get the ATV2 to output at 24fps yet so that may explain some of the judder issues some users are experiencing. I was doing my testing while falling asleep so I'll have to spend some more time later on to do a more thorough test.
Anyone know how to get the frame rate counter on the screen with the ATV2? I saw the video posted on Engadget and they were able to do that. I haven't been able to figure this trick out yet.
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bam099
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I played back a 1080p mkv over SMB share on wired network. I didn't notice the judder issues that other people talked but I did notice that it needed to stop for buffering every 30 seconds or so. So I guess that makes it pretty much unwatchable. I'm not sure how many Mbps the file was, it was on my atv2. Sorry I don't have much info I'm just trying to get more info out to the community.
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bam099
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Thats true you're probably right about the lack of RAM contributing especially if other people haven't noticed it. I wonder if there's a way to increase the video cache because I think the atv2 has 8 gigs of internal storage.
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bam099,
I have been testing 1080P content and have not had a single buffering issue. Movie starts right away and plays smoothly throughout.
I am connected via the wire ethernet over 100mbps. If you can, try pluggin the ATV2 to the same switch where you are storing the movie files. If it's going through multiple switches, there could be an issue somewhere on your network. I had an issue like that once two years ago with an old switch causing a similar problem.
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Without seeing mediainfo dumps of 1080p content people are playing, it's really hard to know why one person has a problem and another does not. There are SO many different ways something could have been encoded, but the big ones that really would effect differences in results would be:
-Profile
-Level
-Bitrate
-fps
I'm personally going to do testing tomorrow and build a little table to show my results. I have a lot of 1080p MKV's at various encoding settings, so I can get a good feel of what works well, and what does not.
Also, the way you are connected to the network si big. 802.11n wifi is simply not adequate for MOST 1080p streaming. So if any of you who are getting stuttering happened to be on Wifi, plug in and try again.
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bam099,
Those info helps. Are you accessing your source via SMB sharing? I once had an issue with uPNP shares and had to go into my WRT54G and clear all the uPNP cache and then uPNP work properly again.
I agree with having some sort of common source material so we can playback for testing. Question is, what non copyrighted source is there to use?
There is a long standing issue on the Apple forum with Netflix playback and how picky the ATV was on the DNS server used. I know, it sounds wierd but are you perhaps using OpenDNS server for DNS resolution?
Also, try adding your source via IP instead of hostname to remove name resolution as a possible source of the issue. Grasping at straws but worth a shot. What material are you playing that exhibit the issue anyways?
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bam099
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dazex,
Yes it's over SMB. The issue of non copyrighted is definitely going to be the hardest obstacle! But I know SMB is not the most efficient way of sharing files, but networking is sadly not my greatest strength and it's easy. But I hope this info helps someone along
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bam099: Can you run mediainfo on the sample file you have been used and post all the info mediainfo gives? Your video info didn't include the bitrate, which is a critical piece of info.
Always works great for me.
