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MediaCore Community » Recent Posts http://mediacorecommunity.org/community/ The support & development community for MediaCore en-US Sat, 04 Feb 2012 10:21:26 +0000 http://bbpress.org/?v=1.0.2 <![CDATA[Search]]> q http://mediacorecommunity.org/community/search.php Jeremy on "How much traffic can Mediacore handle (rough estimate)" http://mediacorecommunity.org/community/topic/how-much-traffic-can-mediacore-handle-rough-estimate#post-3526 Thu, 02 Feb 2012 13:49:30 +0000 Jeremy 3526@http://mediacorecommunity.org/community/ MediaCore.com runs on the Amazon cloud and we've completely rebuilt the entire infrastructure so that it's N scalable. If you are looking for a cloud solution then MediaCore.com is the way to go. As Felix mentioned he helps with maintaining the MediaCore Community Edition and we'd definitely recommend working with him if you're looking to enhance the performance of the CE edition. We're really only involved in MediaCore CE as far as we're also maintainers and we have done the leg work in creating the site, building the community etc. Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3525 Thu, 02 Feb 2012 09:24:45 +0000 Felix Schwarz 3525@http://mediacorecommunity.org/community/ > But what i dont really understand that it only happend at "Twitter-Sharing". > > Facebooke (like or share) OR Google Plus OR other share possibility works. Well, unfortunately you did not really explain in detail what happens when you use the twitter sharing. I assume that you can add the item to twitter and some time later (some seconds, minutes) the server becomes unresponsive. One explanation is that way more people follow your twitter links than on Facebook or Google+. One indicator for that is if you web stats show a big increase in users around the time you post your link. > I am not sure how i do it right. > I get a "second" error on Twittershare > AttributeError: 'Connection' object has no attribute '_Connection__connection' When you see the exception, please click on "View as: ... Text". Btw: I hope you don't have your public server running with 'debug = True' in your deployment.ini, do you? Also I'd recommend you enable error notifications in your deployment.ini so you get an email about each and every exception. Sometimes you see a wide range of exceptions because users see different symptoms. Putting all the exceptions together might be the key to understand what goes wrong. Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3524 Thu, 02 Feb 2012 06:56:08 +0000 Jose 3524@http://mediacorecommunity.org/community/ thanks. at the moment i am at work, at monday i will try to check it. But what i dont really understand that it only happend at "Twitter-Sharing". Facebooke (like or share) OR Google Plus OR other share possibility works. That makes me a little crazy :-) PPS: you wrote above "PS: If you paste a traceback, please copy it from the plain text view + use code tags for better readability. " I am not sure how i do it right. I get a "second" error on Twittershare AttributeError: 'Connection' object has no attribute '_Connection__connection' CGI Variables thanks also Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3523 Tue, 31 Jan 2012 15:21:30 +0000 Felix Schwarz 3523@http://mediacorecommunity.org/community/ > but error still occurs. Then the 'MySQL server has gone away' is because of a different setting. I think you need to dig into your MySQL config to understand why MySQL closed the connection unexpectedly. "sqlalchemy.pool_recycle" should be smaller than your wait_timeout, 28840 looks ok. Don't lower it just because of the error you reported. Felix Schwarz on "Not working after computer restart" http://mediacorecommunity.org/community/topic/not-working-after-computer-restart#post-3522 Tue, 31 Jan 2012 15:18:55 +0000 Felix Schwarz 3522@http://mediacorecommunity.org/community/ well, please check that nginx+uwsgi are started on system restart (are they running? check with "top"/"ps aux") Felix PS: I wish new MediaCore users would stop using nginx+uwsgi for MediaCore. Of course it's a viable option but if you are not a professional sysadmin and/or you never worked with nginx before, please use Apache+mod_wsgi. There is more documentation and there are less gotchas. And I can pretty much guarantee that there is no real performance gain by using nginx. bgavin on "Not working after computer restart" http://mediacorecommunity.org/community/topic/not-working-after-computer-restart#post-3521 Mon, 30 Jan 2012 14:06:51 +0000 bgavin 3521@http://mediacorecommunity.org/community/ I have mediacore installed in VMware on ubuntu 32bit. I followed these instructions: <a href="https://docs.google.com/document/pub?id=1DAikm-mCYiNFddClW21S0G-EwzINIC_gUl7pn2jq2zA" rel="nofollow">https://docs.google.com/document/pub?id=1DAikm-mCYiNFddClW21S0G-EwzINIC_gUl7pn2jq2zA</a> When I restart ubuntu, I get a Welcome to Nginx! page. And mediacore no longer works. I have run the two commands at the bottom of the guide. I can roll back the snapshot to right before I reboot, and mediacore works again. However, this is not a permanent solution. Does anyone know what I have missed? Thanks in advance, Brett Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3520 Sat, 28 Jan 2012 14:51:54 +0000 Jose 3520@http://mediacorecommunity.org/community/ ok. i hope i understand it right: i have "standart" wait/idle timeout at 28840 i tried set global wait_timeout = 30 but error still occurs. if i set global wait_timeout = 30 do i have to set sqlalchemy.pool_recycle to 30 ? sorry for all that questions. Felix Schwarz on "install error on Ubuntu 11.10" http://mediacorecommunity.org/community/topic/install-error-on-ubuntu-1110#post-3519 Sat, 28 Jan 2012 04:51:43 +0000 Felix Schwarz 3519@http://mediacorecommunity.org/community/ Thank you very much for your report. I just <a href="https://github.com/mediacore/mediacore-community/commit/2d936da92e31726527dcc1425d0f4d044d03fed6">pushed a fix to github</a>. Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3518 Sat, 28 Jan 2012 04:43:14 +0000 Felix Schwarz 3518@http://mediacorecommunity.org/community/ The correct value for sqlalchemy.pool_recycle depends on the setting of your wait/idle timeouts in MySQL. Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3517 Sat, 28 Jan 2012 04:16:24 +0000 Jose 3517@http://mediacorecommunity.org/community/ Hi, ok thanks. sqlalchemy.pool_recycle was set to 3600. i will try later a set to 1800. or do i missunderstood you? thanks. i will wrote if it works later. bgavin on "install error on Ubuntu 11.10" http://mediacorecommunity.org/community/topic/install-error-on-ubuntu-1110#post-3516 Fri, 27 Jan 2012 19:45:56 +0000 bgavin 3516@http://mediacorecommunity.org/community/ Figured it out. There was a foreign character on line 21 of /mediacore-community/mediacore/lib/xhtml/htmlsanitizer.py I replaced it with an "a" and saved. re-ran paster setup-app development.ini went well after that. bgavin on "install error on Ubuntu 11.10" http://mediacorecommunity.org/community/topic/install-error-on-ubuntu-1110#post-3515 Fri, 27 Jan 2012 17:54:30 +0000 bgavin 3515@http://mediacorecommunity.org/community/ I am almost all the way through the install and I am receiving the following error: (mediacore_env)root@mediacore:/mediacore-community# mysql -u root mediacore_db < setup_triggers.sql -p Enter password: ERROR 1146 (42S02) at line 12: Table 'mediacore_db.media' doesn't exist Here is the context from which I copied this: File "/mediacore-community/mediacore/lib/helpers.py", line 37, in <module> from mediacore.lib.players import (embed_player, embed_iframe, media_player, File "/mediacore-community/mediacore/lib/players.py", line 16, in <module> from mediacore.forms.admin import players as player_forms File "/mediacore-community/mediacore/forms/__init__.py", line 15, in <module> from mediacore.lib.xhtml import clean_xhtml, decode_entities, line_break_xhtml File "/mediacore-community/mediacore/lib/xhtml/__init__.py", line 13, in <module> from mediacore.lib.xhtml.htmlsanitizer import (Cleaner, File "/mediacore-community/mediacore/lib/xhtml/htmlsanitizer.py", line 21 SyntaxError: Non-ASCII character '\xc3' in file /mediacore-community/mediacore/lib/xhtml/htmlsanitizer.py on line 22, but no encoding declared; see <a href="http://www.python.org/peps/pep-0263.html" rel="nofollow">http://www.python.org/peps/pep-0263.html</a> for details (mediacore_env)root@mediacore:/mediacore-community# mysql -u root mediacore_db < setup_triggers.sql -p Enter password: ERROR 1146 (42S02) at line 12: Table 'mediacore_db.media' doesn't exist (mediacore_env)root@mediacore:/mediacore-community# nano development.ini (mediacore_env)root@mediacore:/mediacore-community# (mediacore_env)root@mediacore:/mediacore-community# Does anyone have any ideas? Thanks in advance! Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3514 Fri, 27 Jan 2012 12:24:40 +0000 Felix Schwarz 3514@http://mediacorecommunity.org/community/ > (OperationalError) (2006, 'MySQL server has gone away') That's the problem. Something is wrong with your MySQL server. Did crash? Max. number of connections saturated? Bad setting "sqlalchemy.pool_recycle"? fs PS: If you paste a traceback, please copy it from the plain text view + use code tags for better readability. Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3513 Wed, 25 Jan 2012 04:23:04 +0000 Jose 3513@http://mediacorecommunity.org/community/ Module mediacore.lib.decorators:89 in wrapped_f << raise HTTPMethodNotAllowed().exception result = f(*args, **kwargs) tmpl = template >> result = f(*args, **kwargs) Module mediacore.controllers.media:2 in view Module mediacore.lib.decorators:610 in autocommit << raise except: _autocommit_rollback(req) raise else: >> _autocommit_rollback(req) Module mediacore.lib.decorators:626 in _autocommit_rollback << def _autocommit_rollback(req): DBSession.rollback() _autocommit_fire_callbacks(req, req.rollback_callbacks) >> DBSession.rollback() Module sqlalchemy.orm.scoping:139 in do << def instrument(name): def do(self, *args, **kwargs): return getattr(self.registry(), name)(*args, **kwargs) return do for meth in Session.public_methods: >> return getattr(self.registry(), name)(*args, **kwargs) Module sqlalchemy.orm.session:592 in rollback << pass else: self.transaction.rollback() def commit(self): >> self.transaction.rollback() Module sqlalchemy.orm.session:411 in rollback << for transaction in self._iterate_parents(): if transaction._parent is None or transaction.nested: transaction._rollback_impl() transaction._deactivate() break >> transaction._rollback_impl() Module sqlalchemy.orm.session:424 in _rollback_impl << def _rollback_impl(self): for t in set(self._connections.values()): t[1].rollback() if self.session._enable_transaction_accounting: >> t[1].rollback() Module sqlalchemy.engine.base:1524 in rollback << if not self._parent.is_active: return self._do_rollback() self.is_active = False >> self._do_rollback() Module sqlalchemy.engine.base:1558 in _do_rollback << def _do_rollback(self): if self.is_active: self.connection._rollback_impl() def _do_commit(self): >> self.connection._rollback_impl() Module sqlalchemy.engine.base:1088 in _rollback_impl << self.__transaction = None except Exception, e: self._handle_dbapi_exception(e, None, None, None, None) raise else: >> self._handle_dbapi_exception(e, None, None, None, None) Module sqlalchemy.engine.base:1085 in _rollback_impl << self.engine.logger.info("ROLLBACK") try: self.engine.dialect.do_rollback(self.connection) self.__transaction = None except Exception, e: >> self.engine.dialect.do_rollback(self.connection) Module sqlalchemy.dialects.mysql.base:1659 in do_rollback << try: connection.rollback() except: if self.server_version_info < (3, 23, 15): >> connection.rollback() OperationalError: (OperationalError) (2006, 'MySQL server has gone away') None None CGI Variables Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3512 Wed, 25 Jan 2012 04:11:07 +0000 Jose 3512@http://mediacorecommunity.org/community/ seems to be that apache dont response after sharing on twitter with the build-in-share option. Top-result 1: 29 root 20 0 0 0 0 S 0 0.0 0:00.51 events/2 119 root 20 0 0 0 0 S 0 0.0 0:00.18 kondemand/4 748 root 39 19 0 0 0 S 0 0.0 0:01.34 kipmi0 1333 root 20 0 2548 1232 916 R 0 0.0 0:00.82 top 1 root 20 0 2764 1600 1180 S 0 0.0 0:01.25 init Top-result 2: 748 root 39 19 0 0 0 S 0 0.0 0:01.44 kipmi0 1353 root 20 0 2548 1244 916 R 0 0.0 0:00.14 top Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3511 Tue, 24 Jan 2012 16:39:35 +0000 Felix Schwarz 3511@http://mediacorecommunity.org/community/ > If i add the link "manual" in Twitter, all works fine. > If i use the "share" button in mediacore it crashs... I think you have to explain in more detail what "crash" means in your case. Any JS errors/logged errors? Does Apache respond at all? Please also check the server load using 'top'. Felix Schwarz on "upload" http://mediacorecommunity.org/community/topic/upload-1#post-3510 Tue, 24 Jan 2012 16:37:28 +0000 Felix Schwarz 3510@http://mediacorecommunity.org/community/ I think this might be possible using a custom plugin + observers but it's doable using just configuration right now. Felix Schwarz on "How much traffic can Mediacore handle (rough estimate)" http://mediacorecommunity.org/community/topic/how-much-traffic-can-mediacore-handle-rough-estimate#post-3509 Tue, 24 Jan 2012 16:20:18 +0000 Felix Schwarz 3509@http://mediacorecommunity.org/community/ It's actually also the number of CPUs (as MediaCore can serve more requests in parallel), I'd go for 4 slower CPUs in favor of 2 faster ones. I'm not sure what you mean about 'adding servers via API'? There is definitively no such thing for the open source version (which is the only one you can install, the cloud version is managed by SimpleStation). I'm the current MediaCore maintainer, so I'm actually doing only MediaCore development/scripting and offload allmost all design/graphics to specialists. Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3508 Tue, 24 Jan 2012 14:10:25 +0000 Jose 3508@http://mediacorecommunity.org/community/ Hi Felix, me again. I checked and tried a little: - if i share to Facebook - ALL IS OK. but - if i share to TWITTER - its "crashs". never seen something like that. If i add the link "manual" in Twitter, all works fine. If i use the "share" button in mediacore it crashs... so i am not sure what happens their. i will check next days again. thank you sixinco on "How much traffic can Mediacore handle (rough estimate)" http://mediacorecommunity.org/community/topic/how-much-traffic-can-mediacore-handle-rough-estimate#post-3507 Tue, 24 Jan 2012 10:50:34 +0000 sixinco 3507@http://mediacorecommunity.org/community/ Yes this helps me a lot. Good to know the CPU is most important and am I correct that Mediacore has already an option for adding servers via API or can they only be used for Amazon services? PS Do you also develop Mediacore websites (scripting not the graphic design)? Thx! Felix Schwarz on "How much traffic can Mediacore handle (rough estimate)" http://mediacorecommunity.org/community/topic/how-much-traffic-can-mediacore-handle-rough-estimate#post-3506 Tue, 24 Jan 2012 02:42:10 +0000 Felix Schwarz 3506@http://mediacorecommunity.org/community/ 3500 users per hour at peak are really not a big deal (that's about 1 user per second). That's easily doable on a reasonably sized machine. Keep in mind that MediaCore is mostly CPU bound, load on the filesystem/DB is pretty low for common scenarios. So more CPU cores will help to serve more users. RAM is not that important if you have at least 2 GB. Network bandwidth might be more of a problem if the videos are hosted on the same server (100 Mbit/s bandwidth, 1 user/second means that your network bandwidth will be fully saturated if the average video is 10 MB). Offloading to a CDN/load balancer is highly recommended in this scenario. Some of my clients run MediaCore sites which need to serve several hundred users within a few seconds (on a single server with videos offloaded to a CDN). That's only possible with some advanced techniques (I created a 'MediaCore Performance Plugin' which helps there). If you need professional help on this topic, just contact me directly (info@schwarz.eu). Hope that helps. Jeremy on "Featured view count" http://mediacorecommunity.org/community/topic/featured-view-count#post-3505 Tue, 24 Jan 2012 00:09:30 +0000 Jeremy 3505@http://mediacorecommunity.org/community/ The view counts aren't tied to the player in any way in MediaCore CE, they are just tied to page loads. At the moment there are no patches for this since it would fundamentally change how views are calculated and would require a more in-depth analytics engine than is commonly built in. I'd recommend getting Google Analytics to track your page loads and player actions. sixinco on "How much traffic can Mediacore handle (rough estimate)" http://mediacorecommunity.org/community/topic/how-much-traffic-can-mediacore-handle-rough-estimate#post-3504 Mon, 23 Jan 2012 14:30:23 +0000 sixinco 3504@http://mediacorecommunity.org/community/ I am planning to use Mediacore for a high traffic website and want it to run as optimized as possible. Which means I don't want to just add servers or completely rewrite it. Hosting is on the same server, but keep encoding apart so that wont be a problem So is this possible when I use a Dual core server with 4GB and traffic of about 50k per day and 3500 per hour peaks? thx. Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3503 Mon, 23 Jan 2012 04:21:17 +0000 Jose 3503@http://mediacorecommunity.org/community/ Thank you. i think #1 it is not. Videos are from 20 to 200MB size and not much viewer. i will try #2 now. for #3 i have to talk with friends, cause our projekt is a non-profit-organisation (e.V.) - so i can't say it on my own. But i will check the cpu-load also. That is my server: Intel Xeon X3440 Quadcore 32 GB DDR3-RAM ECC 2x 2GB HDD @server4you.de (maybe its helpfull this infos). - Thanks again, and sorry for my english - try my best! chrising on "Featured view count" http://mediacorecommunity.org/community/topic/featured-view-count#post-3502 Sun, 22 Jan 2012 18:33:51 +0000 chrising 3502@http://mediacorecommunity.org/community/ We tried implementing the Featured feature on our site, but decided to remove it because when people play the video directly from front page it doesn't increment the view count. Does anyone know if there is a fix for this? chrising on "Popularity" http://mediacorecommunity.org/community/topic/popularity#post-3501 Sun, 22 Jan 2012 18:31:54 +0000 chrising 3501@http://mediacorecommunity.org/community/ Hi I'm experiencing the same issue on our new site that we've installed. So when bgt said the issue is resolved, I wonder how it was resolve and how do I resolve it on our site. Felix Schwarz on "How to upgrade (secure) from 0.9 to 0.9.1" http://mediacorecommunity.org/community/topic/how-to-upgrade-secure-from-09-to-091#post-3500 Thu, 19 Jan 2012 12:25:06 +0000 Felix Schwarz 3500@http://mediacorecommunity.org/community/ Hi Gary, upgrading should be relatively simple, no db upgrades necessary. Just follow the steps in the documentation: <a href="http://mediacorecommunity.org/docs/install/upgrade.html" rel="nofollow">http://mediacorecommunity.org/docs/install/upgrade.html</a> fs Felix Schwarz on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3499 Thu, 19 Jan 2012 12:24:15 +0000 Felix Schwarz 3499@http://mediacorecommunity.org/community/ Assuming that the server does not really "crash" but it just takes 'a long time' (up to several minutes) to serve your page. Can you check how requests you go 1-2 minutes before these symptoms? I assume: "a lot more than usual" Then I suspect one of these three problems: 1. You're hosting the videos on your own server. These videos are big, so 100 Mbit/s network bandwidth is just not enough anymore. => do the math: video size * number of views / time if you're above 60 Mbit/s, you need to outsource your files to a CDN. 2. MySQL locking problems. => Update to the current git, check if the problem goes away. 3. Check your server's CPU load (using "top" via ssh). Likely it's just fully loaded. In that case you need to use 'a bigger gun', for example add my 'MediaCore performance plugin' (price depends on your setup, price for a single-server config is 600 €) HTH Jose on "facebook + twitter share question" http://mediacorecommunity.org/community/topic/facebook-twitter-share-question#post-3498 Thu, 19 Jan 2012 07:12:36 +0000 Jose 3498@http://mediacorecommunity.org/community/ Hi, first of all: sorry for my english. Since a week or so i have the problem if i share a video on facebook and twitter, it seems to be that something "crashes". I have to reboot the server, and then works it fine again. So, i have no idea which happend there, maybe someone any idea? thank you. Jose on "Stop playing Videos" http://mediacorecommunity.org/community/topic/stop-playing-videos#post-3497 Thu, 19 Jan 2012 06:40:21 +0000 Jose 3497@http://mediacorecommunity.org/community/ Seems to be that i solved myself. On any reason (i dont know exactly) i had done settings for h.264 video settings at exporting my videos. I fixed the export and now it works. Seems to be that i tried uploading another video-format not h264. sorry my english isnt very well. Jose on "how to update the flowplayer" http://mediacorecommunity.org/community/topic/how-to-update-the-flowplayer#post-3496 Thu, 19 Jan 2012 06:38:22 +0000 Jose 3496@http://mediacorecommunity.org/community/ thank you! royearguan on "upload" http://mediacorecommunity.org/community/topic/upload-1#post-3495 Thu, 19 Jan 2012 06:17:11 +0000 royearguan 3495@http://mediacorecommunity.org/community/ when u upload a video how can i ask for more details... like country age male/female and more fneyron on "Variable assignment 'deployment.ini' invalid (no "=")" http://mediacorecommunity.org/community/topic/variable-assignment-deploymentini-invalid-no#post-3494 Thu, 19 Jan 2012 05:11:26 +0000 fneyron 3494@http://mediacorecommunity.org/community/ Thanks all installation is done now. I can now play with your beautifull program :) chrising on "ZeroDivisionError: float division after changing popularity values" http://mediacorecommunity.org/community/topic/zerodivisionerror-float-division-after-changing-popularity-values#post-3493 Wed, 18 Jan 2012 17:47:34 +0000 chrising 3493@http://mediacorecommunity.org/community/ Just another update. It appears having values of 1 and 1 doesn't work. which is the main cause of the error. Must be something the maths which is doing it. Changed it back to 100 100 for us for now. chrising on "ZeroDivisionError: float division after changing popularity values" http://mediacorecommunity.org/community/topic/zerodivisionerror-float-division-after-changing-popularity-values#post-3492 Wed, 18 Jan 2012 17:35:01 +0000 chrising 3492@http://mediacorecommunity.org/community/ I've mananged to fix the problem. Here's the solution for those who get this error also next. I had to get our DBA administrators to log into the MySQL database in Media table. We looked at a Settings table and in there we changed the values for Decay Exponent and Decay Lifetime to be another value than what I'd entered from the front it. In my case I had it set to 1 and 1. Changed that to 100 and 100 and was able to fix the problem. I can now continue to save and upload values into the system. Trying to change these values in the front end gives the error but doing it from the database gets around the saving error on the page.