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• mdadm: Win7-install created a boot partition on one of my RAID6 drives. How to rebuild?

  - by EXIT_FAILURE

  My problem happened when I attempted to install Windows 7 on it's own SSD. The Linux OS I used which has knowledge of the software RAID system is on a SSD that I disconnected prior to the install. This was so that windows (or I) wouldn't inadvertently mess it up. However, and in retrospect, foolishly, I left the RAID disks connected, thinking that windows wouldn't be so ridiculous as to mess with a HDD that it sees as just unallocated space. Boy was I wrong! After copying over the installation files to the SSD (as expected and desired), it also created an ntfs partition on one of the RAID disks. Both unexpected and totally undesired! . I changed out the SSDs again, and booted up in linux. mdadm didn't seem to have any problem assembling the array as before, but if I tried to mount the array, I got the error message: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so dmesg: EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! EXT4-fs (md0): group descriptors corrupted! I then used qparted to delete the newly created ntfs partition on /dev/sdd so that it matched the other three /dev/sd{b,c,e}, and requested a resync of my array with echo repair > /sys/block/md0/md/sync_action This took around 4 hours, and upon completion, dmesg reports: md: md0: requested-resync done. A bit brief after a 4-hour task, though I'm unsure as to where other log files exist (I also seem to have messed up my sendmail configuration). In any case: No change reported according to mdadm, everything checks out. mdadm -D /dev/md0 still reports: Version : 1.2 Creation Time : Wed May 23 22:18:45 2012 Raid Level : raid6 Array Size : 3907026848 (3726.03 GiB 4000.80 GB) Used Dev Size : 1953513424 (1863.02 GiB 2000.40 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Mon May 26 12:41:58 2014 State : clean Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 4K Name : okamilinkun:0 UUID : 0c97ebf3:098864d8:126f44e3:e4337102 Events : 423 Number Major Minor RaidDevice State 0 8 16 0 active sync /dev/sdb 1 8 32 1 active sync /dev/sdc 2 8 48 2 active sync /dev/sdd 3 8 64 3 active sync /dev/sde Trying to mount it still reports: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so and dmesg: EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! EXT4-fs (md0): group descriptors corrupted! I'm a bit unsure where to proceed from here, and trying stuff "to see if it works" is a bit too risky for me. This is what I suggest I should attempt to do: Tell mdadm that /dev/sdd (the one that windows wrote into) isn't reliable anymore, pretend it is newly re-introduced to the array, and reconstruct its content based on the other three drives. I also could be totally wrong in my assumptions, that the creation of the ntfs partition on /dev/sdd and subsequent deletion has changed something that cannot be fixed this way. My question: Help, what should I do? If I should do what I suggested , how do I do that? From reading documentation, etc, I would think maybe: mdadm --manage /dev/md0 --set-faulty /dev/sdd mdadm --manage /dev/md0 --remove /dev/sdd mdadm --manage /dev/md0 --re-add /dev/sdd However, the documentation examples suggest /dev/sdd1, which seems strange to me, as there is no partition there as far as linux is concerned, just unallocated space. Maybe these commands won't work without. Maybe it makes sense to mirror the partition table of one of the other raid devices that weren't touched, before --re-add. Something like: sfdisk -d /dev/sdb | sfdisk /dev/sdd Bonus question: Why would the Windows 7 installation do something so st...potentially dangerous? Update I went ahead and marked /dev/sdd as faulty, and removed it (not physically) from the array: # mdadm --manage /dev/md0 --set-faulty /dev/sdd # mdadm --manage /dev/md0 --remove /dev/sdd However, attempting to --re-add was disallowed: # mdadm --manage /dev/md0 --re-add /dev/sdd mdadm: --re-add for /dev/sdd to /dev/md0 is not possible --add, was fine. # mdadm --manage /dev/md0 --add /dev/sdd mdadm -D /dev/md0 now reports the state as clean, degraded, recovering, and /dev/sdd as spare rebuilding. /proc/mdstat shows the recovery progress: md0 : active raid6 sdd[4] sdc[1] sde[3] sdb[0] 3907026848 blocks super 1.2 level 6, 4k chunk, algorithm 2 [4/3] [UU_U] [>....................] recovery = 2.1% (42887780/1953513424) finish=348.7min speed=91297K/sec nmon also shows expected output: ¦sdb 0% 87.3 0.0| > |¦ ¦sdc 71% 109.1 0.0|RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR > |¦ ¦sdd 40% 0.0 87.3|WWWWWWWWWWWWWWWWWWWW > |¦ ¦sde 0% 87.3 0.0|> || It looks good so far. Crossing my fingers for another five+ hours :) Update 2 The recovery of /dev/sdd finished, with dmesg output: [44972.599552] md: md0: recovery done. [44972.682811] RAID conf printout: [44972.682815] --- level:6 rd:4 wd:4 [44972.682817] disk 0, o:1, dev:sdb [44972.682819] disk 1, o:1, dev:sdc [44972.682820] disk 2, o:1, dev:sdd [44972.682821] disk 3, o:1, dev:sde Attempting mount /dev/md0 reports: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so And on dmesg: [44984.159908] EXT4-fs (md0): ext4_check_descriptors: Block bitmap for group 0 not in group (block 1318081259)! [44984.159912] EXT4-fs (md0): group descriptors corrupted! I'm not sure what do do now. Suggestions? Output of dumpe2fs /dev/md0: dumpe2fs 1.42.8 (20-Jun-2013) Filesystem volume name: Atlas Last mounted on: /mnt/atlas Filesystem UUID: e7bfb6a4-c907-4aa0-9b55-9528817bfd70 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type: Linux Inode count: 244195328 Block count: 976756712 Reserved block count: 48837835 Free blocks: 92000180 Free inodes: 243414877 First block: 0 Block size: 4096 Fragment size: 4096 Reserved GDT blocks: 791 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 8192 Inode blocks per group: 512 RAID stripe width: 2 Flex block group size: 16 Filesystem created: Thu May 24 07:22:41 2012 Last mount time: Sun May 25 23:44:38 2014 Last write time: Sun May 25 23:46:42 2014 Mount count: 341 Maximum mount count: -1 Last checked: Thu May 24 07:22:41 2012 Check interval: 0 (<none>) Lifetime writes: 4357 GB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash: half_md4 Directory Hash Seed: e177a374-0b90-4eaa-b78f-d734aae13051 Journal backup: inode blocks dumpe2fs: Corrupt extent header while reading journal super block

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• Iphone video subtitles programmatic selection

  - by Marek

  I have some videos (mp4) with multiple language subtitles that can be read by an iphone. Users can select to view the subtitle and the language from the default iphone button in the video ui. I would like to be able to set a defalut programmatically, so that, for instance, an user can select a language just one time in the main screen and, from then on, all the videos will have that language subtitles on by default. I can't find anything in the official documentation. I tought about some workarounds like renaming srt files but i don't think it's possible witouht copying all the video files in the user documents dir (not an option).

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• How to get debugging statements for Android in Eclipse

  - by Gerry

  I've read the lame documentation, and checked other answers. I'd like my Android app to print some debug statements in the logcat window of Eclispe. If I use the isLoggable method on the various types of debug levels on the Log class, I find that WARN and INFO are returning true. Log.w, and Log.i do not produce any output. Does anyone know which gotchas I've missed? And just to vent, why should this be hard? I've published apps for iphone and bberry and while appreciate the use of java, the platform is reeking of too many "genuiuses" being involved. I suppose Activities and Intents are very flexible, but why? I just want to put up some screens, take some input and show some results. The bberry pushscreen and popscreen is a lot less pretentious. Thanks, Gerry

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• .NET: What is the purpose of the ProhibitDtd property in XmlReaderSettings? Why is DTD a security i

  - by Cheeso

  The documentation says: When set to true, the XmlReader throws an XmlException when any DTD content is encountered. Do not enable DTD processing if you are concerned about Denial of Service issues or if you are dealing with untrusted sources. If you have DTD processing enabled, you can use the XmlSecureResolver to restrict the resources that the XmlReader can access. You can also design your application so that the XML processing is memory and time constrained. For example, configure time-out limits in your ASP.NET application. Can someone please explain the issue? Why would a reader application want to prohibit the retrieval of a DTD? Where is the denial-of-service issue, if it is a reading application? What is the "trust" issue that is mentioned? Thanks

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• Autoplay an Audio File on Mobile Safari

  - by phantomdata

  Hey guys, I've got a little system dashboard web app that I've written, replete with alarm notifications. I've had it working for quite some time on mobile safari, but recently wanted to add audio to the alarm notifications to allow me to easily know when there are alarms and I'm not looking directly at the display. The alarm notifications are populated through a (relatively) constantly polling ajax request that pulls in and displays an alarm banner if alarms are present. I wanted to add an auto-playing 'alarm' sound as well, but no dice for Safari Mobile. I've tried using HTML5 and embedded objects with no avail. The Apple documentation does state that you can't auto-play an audio file and it must be activated through user action to conserve bandwidth. Has anyone found a way around this in a WLAN setting?

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• Optimal preferences for prefix queries with Oracle catalog (CTXCAT) index

  - by nw

  The documentation for Oracle Text gives this example of a prefix/substring preference setting for context and catalog indexes: begin ctx_ddl.create_preference('mywordlist', 'BASIC_WORDLIST'); ctx_ddl.set_attribute('mywordlist','PREFIX_INDEX','TRUE'); ctx_ddl.set_attribute('mywordlist','PREFIX_MIN_LENGTH', '3'); ctx_ddl.set_attribute('mywordlist','PREFIX_MAX_LENGTH', '4'); ctx_ddl.set_attribute('mywordlist','SUBSTRING_INDEX', 'YES'); end; What I need to know is whether the substring_index attribute is necessary if I only ever issue prefix searches, such as: SELECT title FROM auction WHERE CATSEARCH(title, 'cam*', '') > 0; TITLE --------------- CANON CAMERA FUJI CAMERA NIKON CAMERA OLYMPUS CAMERA PENTAX CAMERA SONY CAMERA 6 rows selected

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• Entity Framework: Data Centric vs. Object Centric

  - by Eric J.

  I'm having a look at Entity Framework and everything I'm reading takes a data centric approach to explaining EF. By that I mean that the fundamental relationships of the system are first defined in the database and objects are generated that reflect those relationships. Examples Quickstart (Entity Framework) Using Entity Framework entities as business objects? The EF documentation implies that it's not necessary to start from the database layer, e.g. Developers can work with a consistent application object model that can be mapped to various storage schemas When designing a new system (simplified version), I tend to first create a class model, then generate business objects from the model, code business layer stuff that can't be generated, and then worry about persistence (or rather work with a DBA and let him worry about the most efficient persistence strategy). That object centric approach is well supported by ORM technologies such as (n)Hibernate. Is there a reasonable path to an object centric approach with EF? Will I be swimming upstream going that route? Any good starting points?

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• Building a subquery with ARel in Rails3

  - by Christopher

  I am trying to build this query in ARel: SELECT FLOOR(AVG(num)) FROM ( SELECT COUNT(attendees.id) AS num, meetings.club_id FROM `meetings` INNER JOIN `attendees` ON `attendees`.`meeting_id` = `meetings`.`id` WHERE (`meetings`.club_id = 1) GROUP BY meetings.id) tmp GROUP BY tmp.club_id It returns the average number of attendees per meeting, per club. (a club has many meetings and a meeting has many attendees) So far I have (declared in class Club < ActiveRecord::Base): num_attendees = meetings.select("COUNT(attendees.id) AS num").joins(:attendees).group('meetings.id') Arel::Table.new('tmp', self.class.arel_engine).from(num_attendees).project('FLOOR(AVG(num))').group('tmp.club_id').to_sql but, I am getting the error: undefined method `visit_ActiveRecord_Relation' for #<Arel::Visitors::MySQL:0x9b42180> The documentation for generating non trivial ARel queries is a bit hard to come by. I have been using http://rdoc.info/github/rails/arel/master/frames Am I approaching this incorrectly? Or am I a few methods away from a solution?

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• How can I populate highchart jQuery plugin dynamically from MVC action?

  - by Anders Svensson

  I'm trying out the Highcharts jQuery plugin for creating charts of data in an MVC application. But I need to get the data for the function dynamically from an Action Method. How can I do that? Taking the example from the Highcharts site (http://highcharts.com/documentation/how-to-use): var chart1; // globally available $(document).ready(function() { chart1 = new Highcharts.Chart({ chart: { renderTo: 'chart-container-1', defaultSeriesType: 'bar' }, title: { text: 'Fruit Consumption' }, xAxis: { categories: ['Apples', 'Bananas', 'Oranges'] }, yAxis: { title: { text: 'Fruit eaten' } }, series: [{ name: 'Jane', data: [1, 0, 4] }, { name: 'John', data: [5, 7, 3] }] }); }); How can I get the data in there dynamically from the action method? Someone suggested I might use JSon, but couldn't specify how. If this is the case, I would really appreciate a simple and specific example, because I don't know much about JSon. Any help appreciated!

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• Best Version control for lone developer

  - by Stephen

  I'm a lone developer at the moment; please share you experiences on what is a good VC setup for a lone developer. My constraints are; I work on multiple machines and need to keep them synced up Sometimes I work offline I'm currently using Subversion(just the client to a remote server), and that is working ok. I'm interested in mecurial and git DVCS, but none of their use-cases make sense to my situation. EDIT: I've migrated my active development to Fossil http://www.fossil-scm.org/ after trialing it with a client. I really like the features to autosync my repositories(reducing accidental forks), the documentation support(both wiki and embedded/versioned) that supports my need to document the code and the project in different spaces, the easy to configure issue tracker, nice access control, skinnable web interface and helpful community.

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• Is it possible to use objects as function paremeters in EL with JBoss EL resolver?

  - by calavera.info

  There is this sentence in JBoss EL resolver online documentation: It's important to fully understand how this extension to EL works. When the page is rendered, the parameter names are stored (for example, hotel.id and user.username), and evaluated (as value expressions) when the page is submitted. You can't pass objects as parameters! But I had used objects as function parameters in my project before I accidentally read this hint and it worked! How is it possible? I'm afraid of that there is some magic now...

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• Delphi VirtualStringTree - Check for Duplicates?

  - by Jeff

  Hello S.O! Yeah, I know I post a lot of questions, but thats because I either need assurance that I am doing it right, what I am doing wrong, or if I am totally clueless, and cant find anything in the documentation. Anyways, I am trying to check for duplicate nodes. Here is how I would want to do it: Loop thru my nodes, and compare each single node's text (record), but if I got many nodes, wouldnt that be too time and memory consuming? Would there be a better approach for this? Thanks! - Jeff.

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• Logging from symfony's model layer

  - by naag

  I'm currently working on a project with symfony 1.4 and Doctrine 1.2. I'm looking for a proper way to do logging from the model layer. In some model classes I use the record hook postSave() to create a ZIP file using exec() (since PHP zip doesn't provide for storage method 'Stored'). To be sure that everythings works fine I check the return code and log an error if something goes wrong. My first naive approach was to do it like this: if ($returnCode != 0) { sfContext::getInstance()->getLogger()->debug(...); } As you know, this doesn't work so well because sfContext belongs to the controller layer and shouldn't be used from the model layer. My next try was to use the model's constructor to pass in an sfLogger instance, but this doesn't work due to Doctrine 1.2 reserving the constructor for internal use (Doctrine 1.2 Documentation). I'm looking forward for your suggestions!

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• Importing large datasets on iPhone using CoreData

  - by Matthes

  Hi there, I'm facing very annoying problem. My iPhone app is loading it's data from a network server. Data are sent as plist and when parsed, it neeeds to be stored to SQLite db using CoreData. Issue is that in some cases those datasets are too big (5000+ records) and import takes way too long. More on that, when iPhone tries to suspend the screen, Watchdog kills the app because it's still processing the import and does not respond up to 5 seconds, so import is never finished. I used all recommended techniques according to article "Efficiently Importing Data" http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Conceptual/CoreData/Articles/cdImporting.html and other docs concerning this, but it's still awfully slow. Solution I'm looking for is to let app suspend, but let import run in behind (better one) or to prevent attempts to suspend the app at all. Or any better idea is welcomed too. Any tips on how to overcome these issues are highly appreciated! Thanks

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• Writing out BMP files with DataBuffer.TYPE_FLOAT or DataBuffer.TYPE_DOUBLE in java

  - by Basil Dsouza

  Hi Guys, I had a problem working with the image classes in java. I am creating a buffered image with DataBuffer.TYPE_DOUBLE. This all works fine in memory (I think). But the problem starts when I try to write it using ImageIO.write. Initially I was getting no exception at all and instead was only getting an empty output file for my troubles.. After a bit of poking around in the code, i found out that the bmp writer doesnt support writing type_double type of files. From: BMPImageWriterSpi.canEncodeImage: if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_INT) return false; So my question is, does anyone have a way of writing out those kind of images to disk? any documentation or tutorial, or link would be helpful. Thanks, Basil Dsouza

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• jQuery UI Autocomplete formating help, (I'm new to jQuery)

  - by brant

  I can't seem to figure out how to add additional functionality to the basic jquery autocomplete. Returning the json data isn't the problem, it's how I am supposed to use the extra json data that confuses me. $(function() { $("#q").autocomplete({ source: "/a_complete.php?sport=<?=$sport?>", minLength: 2 }); }); Response data: [{"pos":"SG","url":"\/nba_player_news\/Kobe_Bryant","value":"Kobe Bryant"},{"pos":"C","url":"\/nba_player_news\/Patrick_O'Bryant","value":"Patrick O'Bryant"}] My goal is something like this: Kobe Bryant (SG) I've read what jqueryui autocomplete documentation has to say and I know i need to use formatItem and/or formatResult. I can't seem to put it all together to make this work as it should. I hope someone with a lot of patience finds the time to help guide me to where I need to go. :)

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• How to generate GIR files from the Vala compiler?

  - by celil

  I am trying to create python bindings to a vala library using pygi with gobject introspection. However, I am having trouble generating the GIR files (that I am planning to compile to typelib files subsequently). According to the documentation valac should support generating GIR files. Compiling the following helloworld.vala public struct Point { public double x; public double y; } public class Person { public int age = 32; public Person(int age) { this.age = age; } } public int main() { var p = Point() { x=0.0, y=0.1 }; stdout.printf("%f %f\n", p.x, p.y); var per = new Person(22); stdout.printf("%d\n", per.age); return 0; } with the command valac helloworld.vala --gir=Hello-1.0.gir doesn't create the Hello-1.0.gir file as one would expect. How can I generate the gir file?

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• Which distribution website should I pick for my open-source package?

  - by Frank

  I wrote an open-source software package, which I'd like to publish (using Apache 2 license). I see various options for how/where to publish/host it: Get my own domain and put it there Put it on Sourceforge Put it on Google Code Put it on Freshmeat ...? What are your experiences / recommendations? What's the current trend among software developers? My only requirements are that I ... can add my own logo on the website can put up some documentation there, get a nice URL that is easy to remember get SVN support (I would also be fine with just uploading a tarball for each new version, it just shouldn't force me to use CVS or any other version control system I'm not familiar with) and of course, the site shouldn't take ownership in the code etc. oh, and it should be free (ok, for registering my own domain I'll be willing to pay a little bit)

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• building mono from svn - android target

  - by Jeremy Bell

  There were patches made to mono on trunk svn to support android. My understanding is that essentially instead of Koush's system which builds mono using the android NDK build system directly, these patches add support for the android NDK using the regular mono configure.sh process. I'd like to play around with this patch, but not being an expert in the mono build system, I have no idea how to tell it to target the android NDK, or even where to look. I've been able to build mono from SVN using the default target (linux) on Ubuntu, but no documentation on how to target android was given with the patches. Since anyone not submitting or reviewing a patch is generally ignored on the mono mailing list, I figured I'd post the question here.

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• Erlang: Interfacing with Xalan: port driver or nif?

  - by mwt

  I'd like to get a real XSLT processor working with erlang. Which would be the best interface, nif or port driver? According to the nif documentation, nif calls block the runtime, so they should not take long. Is processing a long xml document too long? Also, I'd like to allow erlang callbacks during the transformation. Does that seem possible? Possible with nif but not port drivers or vice versa? I've never written any C, so I figured this would be good introduction. Xalan is C++. I assume nif can work with that, right?

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• Where does `signup`, `login`, `register` methods come from

  - by samuil

  In this piece of code: ActionController::Routing::Routes.draw do |map| map.resources :line_items map.resources :orders map.resources :products map.resources :categories map.logout '/logout', :controller => 'sessions', :action => 'destroy' map.login '/login', :controller => 'sessions', :action => 'new' map.register '/register', :controller => 'user', :action => 'create' map.signup '/signup', :controller => 'user', :action => 'new' map.connect '/add-to-cart', :controller => 'line_items', :action => 'new' end map object has methods connect and resources called, which are described in ActionController documentation. Where are the other ones defined/described? They were generated by RESTful authentication plugin. How should I map /add-to-cart to it's action/controller, to have automatically add_to_cart_path method generated?

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• Problems installing rdoc, irb, bluecloth, chronic on fedora 12

  - by Vineeth

  Hello, What do these errors mean? [root@localhost config]# gem install bluecloth Building native extensions. This could take a while... ERROR: Error installing bluecloth: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb can't find header files for ruby. Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/bluecloth-2.0.7 for inspection. Results logged to /usr/lib64/ruby/gems/1.8/gems/bluecloth-2.0.7/ext/gem_make.out [root@localhost config]# And this [root@localhost config]# gem install chronic Successfully installed json_pure-1.4.3 Successfully installed rubyforge-2.0.4 Successfully installed hoe-2.6.0 Successfully installed chronic-0.2.3 4 gems installed /usr/lib64/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ruby_lex.rb:67: warning: parenthesize argument(s) for future version ERROR: While executing gem ... (Gem::DocumentError) ERROR: RDoc documentation generator not installed: no such file to load -- irb/slex [root@localhost config]# I have installed rdocs using "yum install ruby-rdocs". But I don't understand what this error means

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• In the java DBCP connection pool - what is an idle connection?

  - by Ravenor

  A colleague at work insists that a DBCP idle connection is a connection that has lain unused for 30 minutes. I believe a dbcp idle connection is a connection that is in the pool available to be borrowed, and an active connection is one that is borrowed. Looking through the code I found no reference to 30 minutes or other magic values and a cursory glance through the code for assuring minidle does not show any such logic. If he is correct can you please back that up with a code or documentation reference. For the complete answer I would like it answered for both DBCP 1.1 and 1.6.

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• Using Delphi or FFMpeg to create a movie from image sequence

  - by Hein du Plessis

  Hi all My Delphi app has created a squence called frame_001.png to frame_100.png. I need that to be compiled into a movie clip. I think perhaps the easiest is to call ffmpeg from the command line, according to their documentation: For creating a video from many images: ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi The syntax foo-%03d.jpeg specifies to use a decimal number composed of three digits padded with zeroes to express the sequence number. It is the same syntax supported by the C printf function, but only formats accepting a normal integer are suitable. From: http://ffmpeg.org/ffmpeg-doc.html#SEC5 However my files are (lossless) png format, so I have to convert using imagemagick first. My command line is now: ffmpeg.exe -f image2 -i c:\temp\wentelreader\frame_%05d.jpg -r 12 foo.avi But then I get the error: [image2 @ 0x133a7d0]Could not find codec parameters (Video: mjpeg) c:\temp\wentelreader\Frame_C:\VID2EVA\Tools\Mencoder\wentel.bat5d.jpg: could not find codec parameters What am I doing wrong? Alternatively can this be done easily with Delphi?

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• Installing a python wrapper for a c++ library

  - by Eugene Kogan

  Hi all, I am trying to install the python wrapper for the ANN (approx near neighbors) c++ library: link is http://www.scipy.org/scipy/scikits/wiki/AnnWrapper . I am on Windows 7 32-bit. Unfortunately the documentation is a bit terse and I am a newbie to programming in general, so I cannot decipher the instructions found within. I have not built a C++ library before and am not even sure how to get that far. Can anyone please guide? Thanks! gene

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