ATV2 and XBMC bufferring - Printable Version
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- g-off - 2011-10-17 14:15
Looks like you really managed to trim the noise from that log file. It seems to be invisible
Yes he does know what he is talking about when it comes to what XBMC can and can't do.
Juan_Garcia Wrote:I don´t understand why I can to play 1080p (12 GB) from TimeCapsule withouth bufferring and a divx 720 file (500 MB) it´s bufferring constantly. This can´t be a SMB o network unique problem....
- xanadum - 2011-10-17 15:03
g-off Wrote:Looks like you really managed to trim the noise from that log file. It seems to be invisible
I will be sure to post a log once I've ruled out any possible issues on my own end first I helped a friend install XBMC on a vanilla ATV2 box yesterday with the current stable release and had the same issues so could well be on this end.
- kitus_san - 2011-10-17 19:29
Ned Scott Wrote:You need to upgrade to the latest nightlies: http://wiki.xbmc.org/index.php?title=HOW-TO:Install_XBMC_on_Apple_TV_2#Installing_the_latest_nightly_buildHi there,
I was advised to upgrade my version in a different thread. I must admit that by upgrading I've gained a lot of stability. Thanks for that!!!
I've pasted my log file here: http://pastebin.com/pyFw7tcW
here is the media info dump again for the film I was trying to play while capturing that log file.
It is rather weird: I don't see the CPU collapsing around 99% of load. It stays around 65% but framerate is certainly around 15fps and I don't know why. My NAS is not the bottleneck and neither is my network (my NAS delivers 4MBps when playing this film).
Is this the most I can expect from my AppleTV? if so, I will get rid of all my Full Bluray films (AppleTV can't itself do more than 720p actually) and settle for h264 mkvs.
Thanks a million,
- Ned Scott - 2011-10-18 01:27
mpeg 4 can refer to a lot of codecs. Xvid is based on mpeg4, but is different enough from other mpeg4 based codecs that it won't work with ios hardware decoding APIs.
- g-off - 2011-10-18 02:20
The atv should be able to play bluray mts files - if you can get the data to it quickly enough.
Are you running this wired or wireless? The bitrate (36-48mb/s) is pretty steep.
You are using upnp to serve the file which should be fast but it might be worth testing ftp or smb to see if the NAS works better with those when talking to XBMC.
- kitus_san - 2011-10-18 07:43
g-off Wrote:The atv should be able to play bluray mts files - if you can get the data to it quickly enough.
I'm on a gigabit wired network, my NAS has also a gigabit interface, therefore I don't expect the NAS to be the bottleneck (while running the tests I can tell you that the CPU didn't seem to be overwhelmed, it is a qnap ts-239 pro).
Unfortunatelly I don't have a an extremely powerful computer around with a wired network interface to run test with (just a MacBook air). I tested Samba and got similar poor results..
- Memphiz - 2011-10-18 09:19
I think this couldn't be handled by the atv2. And i'm still
Also it has HD Audio streams. Don't know if this bitrate (which is high also for audio) will jump into place when only using 5.1 though.
As of the xbmc.log the VTB decoder eats the file. So it is h.264. But this high bitrate and the 4 RefFrames on 1080p just might be to much. (davilla could say for sure i bet...)
- xanadum - 2011-10-18 13:04
xanadum Wrote:I will be sure to post a log once I've ruled out any possible issues on my own end first I helped a friend install XBMC on a vanilla ATV2 box yesterday with the current stable release and had the same issues so could well be on this end.
Had a panic yesterday as wife had left box on and it had updated to 4.4 (hadn't got round to modifying hosts), anyway did a restore of the box to 4.3 and a fresh xbmc install and put on a nightly build (xbmc-20111015-56d8d46-master-atv2)
Turned out the main issue was samba permissions from files I had moved, so after resetting these it sorted out the avalanche of log activity trying to create the video thumbnails and streaming of 720p content was fine.
Nice surprise was the default movie scraper is nice and fast with greater accuracy (100% for me)
- kitus_san - 2011-10-19 17:18
Memphiz Wrote:(davilla could say for sure i bet...)Hi there,
Looking forward to his take on this then.
- psimondo - 2011-10-19 23:27
I am running nightly xbmc-20111015-56d8d46-master-atv2.
Everything is pretty great, except for MKV playback. I only have 720p MKV files in my library (no 1080p). Some MKVs play absolutely perfectly. But others, (even 420p SD) stutter like crazy. I don't think it's the bitrate of the files as some high bitrate files play fine while some SD, low bitrate files don't.
MKV handling just seems flaky.
If any devs would like logs I can post some or links to files that have issues?