X264 Video Conversion Cluster- (To Reduce Encoding Time)
Oct 31, 2008
I would like to know if there's any way we could reduce "conversion times" for videos while converting them with "mencoder" and "x264 codec"?
Is it possible to cluster 2-3 or more servers (Quad core/8GB RAM) so that I can reduce the conversion timings effectively?
The original video sizes are around 500-700MB on an average and I'd like to convert them using mencoder in x264 codec @ 500Kbps bitrate and 2pass settings.
Ofcourse it'll take atleast 1-2hours to encode 1 such video at these settings on a 'single' such server, so is there a way to reduce the conversion times to around 10-15minutes/video by using "parallel encoding" with x264 codec?P.S: I know how to form a cluster, using beowulf/rocks, etc...what I need help with is 'using' the cluster with x264 codec
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Feb 22, 2008
Nirvanix offers "Image manipulation such as image resizing, thumbnail generation, and rotating, video frame extraction, video conversion to Flash video". Is there any competitor? I guess building one on top of S3/EC2/SQS from Amazon would be a no brainer.
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Apr 12, 2008
I have a video site (just embedding) that is pretty small right now. I do not need a dedicated server just yet.
I am currently using westhost and they do not support the typical suite of video software needed to convert videos to flvs. I would like to know if there are any reliable hosts with good support that offer installation of the following software on a shared vps:
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Mar 30, 2009
I'm planning to buy a share hosting support media streaming, encoding and decode the video file like youtube, likeclub.com. or others
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Aug 16, 2007
Prior to installing FFmpeg and its dependencies, I want to know about FFmpeg server-side conversion without the php script. Does it require those php scripts in the first place or I can just run an ssh command?
Also, does this FFmpeg have a configuration file in which you can set the quality of the converted .fla videos?
How about a lossless quality conversion and keeping the size proportion of the video the same?
Meaning, for example, from .avi to .fla without sacrificing/loosing the quality much or noticeably.
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Jun 9, 2008
We've come to a crossroad with our site and not sure where to take it from here. It would seem like a cluster option would be the best bet, but wanted to ask the professionals first to see if there were any other way to solve it.
The problem is (as usual) too high load making the servers slow. Actually, only the apache server. We recently seperated mySQL and apache on two servers to help out with the load. The mySQL server load is around 0.25-0.5 throughout the day, but the apache server load is almost always at 6.xx-10.xx.
Both servers has the following stats:
CPU: Intel Core2Quad Q6600-S3 (Quad Core @ 2.4GHz)
RAM: 8GB DDR2
HDD: 750gb SATA2
Average Daily Stats:
Uniques: 60 000
Pages: 1 300 000
Hits: 14 700 000
BW: 95 GB
Concurrent users on vBulletin forums 250-700.
* Shouldn't an apache server with these stats be capable to handle the current visits?
* Could this perhaps be solved if we swapped the sata drive with a scsi/sas?
If we're moving to a cluster solution, we'd be looking at minimum 5 servers.
2x Load balancing servers
1x SQL server
2x Apache servers
Preferably we should have 2 SQL servers for redudancy, but for a site that is hobby based, it would be insane to pay around $1245-1490 a month just to keep it up.
Key stats from httpd.conf
Code:
ServerType standalone
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 1
MinSpareServers 15
MaxSpareServers 20
StartServers 15
MaxClients 275
MaxRequestsPerChild 1000
I have root access if anyone needs more info.
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Sep 4, 2008
I have ffmpeg installed on a webserver. If I enter the command to begin a conversion process, or the command is sent through PHP via exec(), it keeps going until it finishes or runs into an error.
Is there a way to cancel a conversion process after it's been started either through the command line or via PHP exec()?
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Feb 14, 2007
how to translate this into what would be needed in port speed to cover this server if converted to colo, in Mbps ? Is it 4.5?
--------------------------------------------------------------------------------
The statistics were last updated Wednesday, 14 February 2007 at 10:50,
at which time 'XXXXXXXXX' had been up for 362 days, 17:47:15.
Last 30 days usage (Metered 95%): 4670.57 kb/sec
Last 30 days usage (Metered 95%): 1477797.53 MBytes
Total Utilization ( Last 30 days ): [In 637187 MBytes] [Out 65140 MBytes]
Max Speed: 12.5 MBytes/s
---------------------------------------------------------------------------------
Also, is there a real need to be on a burstable connection, or are flat rates OK most of the time? Just looking for the advantages and disadvantages of it.
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Aug 16, 2008
I want to do a "near-lossless" video conversion, if that is even possible, in keeping the proportion of the original video. Veoh seems a little bit better / at a higher quality than youtube, and I want to achieve higher quality than that. Literally speaking, I want the converted flv video's quality to be as close as the original video. What ffmpeg command exactly do I need to achieve this? I currently use ClipShare and is experimenting with Ostube for the php script. The default "high-quality" setting for both scripts are not that good of a quality either, with choppy images.
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Oct 30, 2008
to create an .htaccess rewrite so that all urls in a given directory have their files rewritten so that the %20 spaces are converted to dashes. I'd also like to convert my upper case words to lower case, to stay consistent with other conventions we use in the url.
/directory/Example%20Link.aspx
to
/directory/example-link.aspx
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Mar 6, 2007
My OS is FreeBSD 6.2 and I use Sendmail as software to send the e-mail. When I sent a french letter, specials character will display as Ă©. Is there a way to fix it?
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Aug 22, 2014
A dynamic php+mySQL site was converted to a static html by mirroring (wget). The result was that each page became an html file named some-page.html
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Nov 16, 2007
I have installed lame and configured ffmpeg using --enable-libmp3lame
but while converting it gives error unknown encoder mp3
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Mar 28, 2007
I administrate a server with IIS 6 on it running Windows 2003 server. The problem is the person is does the webpages uploads webpages onto the server and when viewing them in the browser you see weird characters. The default encoding used is ISO, so when I change it to UTF-8 the characters go away and it looks normal. Now I know I can have him go into each page and add a meta tag to tell it to use UTF-8 but he has thousands of pages.
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May 7, 2015
I am using the plesk 12 (Web Host Edition) with admin account. I need to configure file sharing in the plesk.
I referred this LINK
I filled up all required field in File Sharing Settings and Click "OK" button.
This error message,
(Error: Failed to perform IDN conversion from UTF-8 name '0') is shown.
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Jun 1, 2007
I'm seeing this in my HTTP Headers in a javascript widget I'm serving. Is there a way to disable chunked transfer encoding, either in PHP or my htaccess file? I have reason to believe it's a workaround for an IE bug.
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Jul 8, 2007
I've seen this header being sent by a small number of visitors. I suppose it's due to some personal antivirus or firewall, as Norton Internet Security strikes out the Accept-Encoding header too (in a different fashion though - it asterisks them out).
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Jan 30, 2009
We been working on building a Japanese site for some time now. We finally finished off and are in the testing stage. Through out the development of the site we've been having trouble with way that Japanese characters display in our auto emails. The problem is, neither us nor programming we team work with are Japanese. And there is very little to no information about this in English.
We've had issues where.
garbled text show up in one or two fields of an email (title/subject/body) but displays fine in others.
garbled text show up in one email account type (yahoo) and not in another (gmail).
Recently one point which really puzzled us, is that we have some auto emails (specific emails from our system to our users relating to topic) that show up fine in all email account types. Yet some emails generated for the same system with basically the same mix of character types have errors. Could this be and error on our part in the incorrect implementation of a coding method that has worked before?
We are using UTF-8 character set now.
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Aug 14, 2014
We get a lot of warning for one and the same domain during backups:
Code:
Warning: hosting "domain.com"
Encoding::encode: source UTF-8 encoding declared, but invalid UTF-8 sequence occured. Falling back to ISO-8859-1
How may we solve it?
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Mar 18, 2008
Last year my web host stated that my site was over utilizing allowed resources for my plan. Specifically, they state that I was overusing the CPU. At the time, I had to upgrade my plan in order to stay online. I would like to move to a new host, but the prospective hosts are all suggesting a dedicated server because of my CPU usage. I don't want to pay that kind of money, so I would really like to curb the CPU problem. Does anyone know how to reduce the CPU of a Wordpress blog? I tried posting this question over at Wordpress.org, but I haven't received a single reply.
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Mar 18, 2008
My server details
Intel 2.4 Ghz P4 Celeron
os-redhat
RAM-2GB DDR
harddisk-160+50Gb
bandwith-3000Gb
now iam haveing more that 0.50-1.20 cpu useage,also cpu useage is also increased i hosted only 6 site out what only one site use MSQL all other site are plain download site,how to reduce the cpu load can u figure me out this issue also give me some tips to reduce the cpu usage
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Jul 3, 2008
13438 nobody 15 0 42276 22m 13m R 22 2.2 1:51.94 httpd
10620 nobody 16 0 41928 16m 8468 S 19 1.7 0:28.54 httpd
11397 nobody 15 0 41524 12m 4784 S 18 1.3 0:06.04 httpd
10745 nobody 15 0 42376 14m 5316 S 17 1.4 0:06.62 httpd
The values in bold are the CPU percentage taken up by each apache process.
So i had to need to each apache process,who can i reduce it?what config i have to change to reduce it?
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Jul 6, 2008
we have a dual xeon 2.8G +2G ram CPANEL server normally load is well under2 and stable
we also use Incremental Backup and choose Per Account Only for MySQL backup
This server mainly hosts a big site, whose SQL is 1.2G big
Everytime server is running backup, load burst to 7 and accessing to website hanged. We are thinking to change SQL backup method to Entire MySQL Directory , but was told while it is processing SQL server will be stopped ?? wil Entire MySQL Directory reduce server load while processing SQL backup?
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Jul 7, 2007
apparently the sysctl commands / config does not work for VPS's. any way to reduce the time_wait period? got nearly 900 connections in that state!
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Jul 9, 2007
I have smokeping monitoring my game servers and so far in the little time that it has been running all my game servers have been encountering an average of 4 to 10% packet loss. Are there are tweaks i can run on the server computer to reduce packet loss? (registry modifications, etc.)
I downloaded a TCP tweak program called "TCP Optimizer" is it safe to run on a Windows 2003 Server OS?
The colo connection is an OC 192 and i have a 100Mbit ethernet card.
Here are my current TCP settings:
Quote:
[SYSTEMCurrentControlSetServicesTcpipParameters]
TcpWindowSize=-1
GlobalMaxTcpWindowSize=-1
EnablePMTUDiscovery=-1
EnablePMTUBHDetect=-1
SackOpts=-1
DefaultTTL=-1
TcpMaxDupAcks=-1
Tcp1323Opts=-1
DisableUserTOSSetting=-1
DefaultTOSValue=-1
[SYSTEMCurrentControlSetServicesAfdParameters]
DefaultReceiveWindow=-1
[SoftwareMicrosoftWindowsCurrentVersionInternet Settings]
MaxConnectionsPerServer=-1
MaxConnectionsPer1_0Server=-1
[SYSTEMCurrentControlSetServicesICSharingSettingsGeneral]
InternetMTU=-1
[SOFTWAREMicrosoftWindowsCurrentVersionExplorerRemoteComputerNameSpace{D6277990-4C6A-11CF-8D87-00AA0060F5BF}]
{D6277990-4C6A-11CF-8D87-00AA0060F5BF}=-1
[SYSTEMCurrentControlSetServicesDnscacheParameters]
MaxNegativeCacheTtl=-1
NegativeCacheTime=-1
NetFailureCacheTime=-1
NegativeSOACacheTime=-1
[SOFTWAREPoliciesMicrosoftWindowsPsched]
NonBestEffortLimit=-5
[SYSTEMCurrentControlSetServicesTcpipServiceProvider]
LocalPriority=499
HostsPriority=500
DnsPriority=2000
NetbtPriority=2001
[SystemCurrentControlSetServicesLanmanServerParameters]
SizReqBuf=-1
[SYSTEMCurrentControlSetServicesNdisWanParametersProtocols]
ProtocolMTU=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
NonBestEffortLimit=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{8190D94A-3B2D-45C4-998D-312E99D6061D}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{8190D94A-3B2D-45C4-998D-312E99D6061D}]
NonBestEffortLimit=-2
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Jan 24, 2007
I know there is no device can protect you from ddos attacks, but I wonder which one is the best to help you reduce the attacks? It might be intelligent to "feel" the attacks? Brand names from Cisco, Foundry, Nokia...?
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Jun 27, 2014
Since updating to plesk 12, we haven't been able to back up the server; even tough sites are backed up individually - apparently backups are ok, haven't had the need to try them.
The troubling domain is a huge joomla site which was backed up w/o trouble through previous versions of plesk 9, 10 and 11.
This is the error message at the server's backup admin:
ERROR: (server object 'server') Runtime error: The check dump failed with code '1'. The dump can contain invalid data! at /usr/local/psa/admin/bin/plesk_agent_manager line 1022.
ERROR: (server object 'server') The dump have been invalidated by check-dump operation
WARNING: (hosting object 'domain.com') Encoding::encode: source UTF-8 encoding declared, but invalid UTF-8 sequence occurred. Falling back to ISO-8859-1
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Mar 3, 2009
How to reduce downtime - multiple name servers ?
Say I have two different hosting accounts at two different web hosts. One at host1.com and another at host2.com. In both the hosts I keep the same files. I use an external registrar and use the name servers for one of my domains as follows:
ns1.host1.com
ns1.host2.com
ns2.host1.com
ns2.host2.com
What would happen in that case, if say host1 is down sometime? Will the name servers point to host2.com?
If this could work, then the probability of downtime of a site would become almost 0 .
Google will like this ?
Another question is how to easily sincronize both cpanel accounts?
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Apr 18, 2009
Few months ago I bought new small VPS box (OpenVZ, 128 MB RAM) in order to place there a new monitoring node of my site monitoring system. Such small amount of RAM is a challenge for operating system optimisation techniques (OpenVZ doesn’t have “swap” as Xen does).
First of all I discovered that apache2-mpm-worker (Apache implementation that uses threads) consumes more memory (100MB) than the classic version that use separate processes (20MB). I had to switch to apache2-mpm-prefork version then.
Next unpleasant suprise: small Python app eats 100MB of virtual memory! I checked that virtual (not resident) memory is taken into account by VPS. I applied some tools to locate memory bottleneck, but without success. Next I added logs with current memory usage to track call that causes big memory consumption. I tracked the following line:
server = WSGIServer(app)
is guilty for high memory increase. After few minutes of googling I located problem: default stack size for a thread. Details:This line creates few threads to handle concurrent calls
Stack size is counted towards virtual memory
Default stack size is very high on Linux (8MB)
Every thread uses separate stack
=> multi threaded application will use at least number_of_threads * 8MB virtual memory!
First solution: use limits.conf file. I altered /etc/security/limits.conf file and changed default stack size. But I couldn’t make this change to alter Python scripts called from Apache (any suggestions why?).
Second (working) solution: lower default stack size using ulimit. For processes launched from Apache I altered /etc/init.d/apache2 script and added:
ulimit -s 256
Now every thread (in apache / Python application) will use only 128 kB of virtual memory (I lowered VSZ from 70 MB to 17 MB this way). Now I have additional space to enlarge MySQL buffers to make DB operations faster.
There’s even better place to inject ulimit system-wide: you can insert this call in:
/etc/init.d/rc
script. Then ulimit will be applied to all daemons (as Apache) and all login sessions. I reduced virtual memory usage by 50% this way.
Note: you may increase stack size on stack overflow errors. In my opinion 256 kb is safe option for most systems, you may increase if in doubt. Still memory savings are big.
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Apr 20, 2009
its 2am night here, and my sites are down....now there is no way i have too much traffic at midnight, also all my websites are new !
this is happening consistently since today morning and im getting no support apart from jargon filled replies from customer care
how do i tweak apache settings and what settings do i make to avoid this ?
im wondering what will happen after few months when my websites actually have good traffic coming in ?
We have checked your server. Please see the load average and process list given below:
The value 4.42 was the CPU load average at the time. A normal load should be below 1.00. I could see that Apache service is causing high load in your server.
So you can tweak Apache in order to reduce the CPU load. Please check and let us know if you need any further assistance.
++++++++++++++++++
[root@chi07 ~]# vzctl exec 18403 w
03:16:20 up 2 min, 0 users, load average: 4.42, 1.42, 0.50
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
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Feb 24, 2008
1) Use PHP as isapi module
2) Open Internet Information Services (IIS) Manager > Right Click On "Web Sites" select properties > Click Service Tab > Open HTTP Compression > Select Compress Application Files and Compress Static Files
3) Use eAccelerator (PHP accelerator, optimizer, and dynamic content cache) with This options;
eaccelerator.shm_size="64"
eaccelerator.cache_dir="c: mpmmcache"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
eaccelerator.keys = "shm"
eaccelerator.sessions = "shm"
eaccelerator.content = "shm"
4) Don't load this extensions,
extension=php_mbstring.dll
extension=php_domxml.dll
extension=php_xslt.dll
Only use this Extensions in php.ini
extension=php_sqlite.dll
extension=php_curl.dll
extension=php_gd2.dll
extension=php_gettext.dll
extension=php_iconv.dll
extension=php_imap.dll
extension=php_mssql.dll
extension=php_sockets.dll
extension="eaccelerator.dll"
upload_tmp_dir= "C:WINDOWSTemp"
This Settings tested on Windows Server 2003 SP2 IIS6 with PHP v4.4.7
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