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  • UDP multicast streaming of media content over WIFI

    - by sajad
    I am using vlc to stream media content over wireless network in scenario like this (from content streamer to stream receiver client): The bandwidth of wireless network is 54 Mb/s and UDP stream's required bandwidth is only 4 Mb/s; however there is trouble in receiving media stream and quality of playing specifically in multicast mode; means I can play the stream but it has jitter and does not play smoothly. In uni-cast I can stream up to 5 media streams correctly, but in multicast mode there is problem with streaming just one media! However when I stream from client some multicast streams; the wifi access-point can receive data correctly and I can see the video in "udp streamer" side correctly even when number of multicast streams increases to 9; But as you see I want to stream from streaming server and receive media in client size. Is this a typical problem of streaming real-time contents over wireless networks? Is it necessary to change configurations of my WIFI switch or it is just a software trouble? thank you

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  • FFmpeg extract clip - stream frame rate differs from container frame rate (x264, aac)

    - by fideli
    Summary H.264 video seems to have a really high frame rate that requires a scaling factor to the applied to the duration of video that I'm trying to extract (900x lower). Body I'm trying to extract a clip from a movie that I have in MP4 format (created using Handbrake). After trying mencoder and VLC, I decided to give FFmpeg a shot since it was the least troublesome when it came to copying the codecs. That is, compared to mencoder and VLC, the resulting file was still playable in QuickTime (I know about Perian, etc, I'm just trying to learn how all this works). Anyway, my command was as follows: ffmpeg -ss 01:15:51 -t 00:05:59 -i outofsight.mp4 \ -acodec copy -vcodec copy clip.mp4 During the copy, The following comes up: Seems stream 0 codec frame rate differs from container frame rate: 45000.00 (45000/1) -> 25.00 (25/1) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from outofsight.mp4': Duration: 01:57:42.10, start: 0.000000, bitrate: 830 kb/s Stream #0.0(und): Video: h264, yuv420p, 720x384, 25 tbr, 22500 tbn, 45k tbc Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16 Output #0, mp4, to 'out.mp4': Stream #0.0(und): Video: libx264, yuv420p, 720x384, q=2-31, 90k tbn, 22500 tbc Stream #0.1(eng): Audio: libfaac, 48000 Hz, stereo, s16 Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding frame= 2591 fps=2349 q=-1.0 size= 8144kB time=101.60 bitrate= 656.7kbits/s … Instead of a 5:59 duration clip, I get the entire rest of the movie. So, to test this, I ran the ffmpeg command with -t 00:00:01. What I got was exactly a 15:00 minute clip. So I did some black box engineering and decided to scale my -t option by calculating what value to enter given that 1 second was interpreted as 900 s. For my desired 359 s clip, I calculated 0.399 s and so my ffmpeg command became: ffmpeg -ss 01:15.51 -t 00:00:00.399 -i outofsight.mp4 \ -acodec copy -vcodec copy clip.mp4 This works, but I have no idea why the duration is scaled by 900. Investigating further, each ffmpeg run has the line: Seems stream 0 codec frame rate differs from container frame rate: 45000.00 (45000/1) -> 25.00 (25/1) 45000/25 = 1800. Must be a relation somewhere. Somehow, the obscenely high frame rate is causing issues with the timing. How is that frame rate so high? The best part about this is that the resulting clip.mp4 has the exact same feature (due to the copied video codec), and taking further clips from this needs the same scaling for the -t duration option. Therefore, I've made it available for anyone willing to check this out. Appendix The preamble for ffmpeg on my system (built using MacPorts ffmpeg port): FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --prefix=/opt/local --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-avfilter-lavf --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libfaac --enable-libfaad --enable-libxvid --enable-libx264 --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/gcc-4.2 --arch=x86_64 libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 libavfilter 1. 4. 0 / 1. 4. 0 libswscale 1. 7. 1 / 1. 7. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Jan 4 2010 21:51:51, gcc: 4.2.1 (Apple Inc. build 5646) (dot 1) EDIT Not sure whether it was a bug or not, but it seems to be fixed now in my current version of ffmpeg, at least for this video (version 0.6.1 from MacPorts).

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  • Mac Mail import from Entourage failed

    - by elhombre
    I am trying to import the entire Folder-structure from Entourage 2008 to Mac Mail on a Mac OS X 10.5.8. First I wanted to export the whole E-Mail Database from Entourage to Desktop as a .rge File. The export got aborted through a message which indicated that my Entourage database is corrupt and that I should rebuild it. I then went over to Mac Mail and imported the Entourage Folder-structure through File/import mailboxes.../Entourage. The bulky import did take some time and the progress bar never reached its full length. But at the end the import was successful. When I checked the imported folder-structure in Mac Mail I noticed that quiet a few Subfolders where missing. I checked Console and saw following message. Mail[2899] Applescript Error: aliasForMailImporter got an error: AppleEvent handler failed. Question: What does that mean and what can I do to get my subfolder-structure over completely?

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  • How come the ls command prints in multiple columns on tty but only one column everywhere else?

    - by David Lou
    Even after using Unix-like OSes for a couple years, this behaviour still baffles me. When I use the ls command in a directory that has lots of files, the output is usually nicely formatted into multiple columns. Here's an example: $ ls a.txt C.txt f.txt H.txt k.txt M.txt p.txt R.txt u.txt W.txt z.txt A.txt d.txt F.txt i.txt K.txt n.txt P.txt s.txt U.txt x.txt Z.txt b.txt D.txt g.txt I.txt l.txt N.txt q.txt S.txt v.txt X.txt B.txt e.txt G.txt j.txt L.txt o.txt Q.txt t.txt V.txt y.txt c.txt E.txt h.txt J.txt m.txt O.txt r.txt T.txt w.txt Y.txt However, if I try to redirect the output to a file, or pipe it to another command, only a single column appears in the output. Using the same example directory as above, here's what I get when I pipe ls to wc: $ ls | wc 52 52 312 In other words, wc thinks there are 52 lines, even though the output to the terminal has only 5. I haven't observed this behaviour in any other command. Would you like to explain this to me?

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  • sshfs mounted directory becomes unresponsive

    - by gms8994
    I've mounted a directory via sshfs: sshfs <user>@<host>:/var/www <host>/ However, after a few hours, the "something" happens, and I can no longer use the mounted directory. Symptoms are similar to when an nfsmounted server becomes unavailable: ls fails, cd fails, etc. I've attempted sshfs -o reconnect <user>@<host>:/var/www <host>/ but that never responded. Does anyone know how I can either unmount the directory, and remount it, or force sshfs to reconnect to the server?

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  • Roadsync Multiple Exchange Accounts configuration

    - by Shyam
    I am right now trialing the Roadsync application on my S60 3rd edition mobile. The documentation states that it allows multiple exchange accounts to be configured and that we could switch between the those accounts from the configuration. However, it doesn't specify how to do that and I am unable to figure that out too. Do any of you have a solution?

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  • Best distro for eee-pc [closed]

    - by a_m0d
    Possible Duplicate: A minimal Linux distribution for my ASUS EEE PC I am looking at buying an Asus eee PC and would like some input from the community on the different distros / OS's out there for it. I have heard that the Xandros distro that comes with the net-book isn't that great (lack of software, etc.), but I wonder what all the SuperUsers out there think. Please answer with one distro / OS per answer, and list (at least some of) the advantages and disadvantages of your choice. EDIT: To clarify, the version I am looking at is the 701 SSD, with the 8GB hard drive.

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  • Unable to run openoffice in headless mode

    - by uswaretech
    I want to automoate some PPT - PDF conversions, so I want to run openoffice in headless mode for scripting. On my machine with X running I can start opemoffice in headless mode via soffice -accept="socket,port=8100;urp;" -headless This doesn't seem to work on a server with X not running. $ soffice -accept="socket,port=8100;urp;" -headless /usr/lib/openoffice/program/soffice.bin X11 error: Can't open display: Set DISPLAY environment variable, use -display option or check permissions of your X-Server (See "man X" resp. "man xhost" for details) $ The error doesnt seem to make sense as well, as the point of specifying -headless was so that I do not need X, while this command seems to look for X.

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  • Changing privilege rights on Arch Linux for a particular program

    - by sherrellbc
    I am quite new to linux and have had issues surrounding every program that I install. Basically, anything that is placed outside of my home directory requires a sudo call prior to opening/executing. I cannot write to files, open usb devices, or run programs that exist outside of this directory (specifically, above this directory). I know this is a privilege problem, but I come here to ask how this can be permanently stopped. How can I configure things such that when programs are installed I do not have to manually find the executable and change its privilege requirements?

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  • Change default font in MS word 2010?

    - by Nano8Blazex
    I don't believe this has been asked before, and I'm curious, Is there any way to change the default font in MS Word 2010 beta? Or MS Word 2007? I'm getting really tired of changing fonts every time I write a document. I simply don't like the Calibri font and change it every time... and it's getting annoying. Thanks.

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  • Boot ISO image from GRUB4DOS on EFI machines

    - by Vladimir Tikhomirov
    I failed with loading ISO image (non-distro) from GRUB2 from USB stick, but found the way how I can boot the GRUB4DOS and then load the image from there. However, it doesn't work all the time and the questions is WHY it doesn't? Environment and loading process: We need to have EFI machine, USB stick, booting ISO, GRUB2 and GRUB4DOS. Last 3 on USB stick. Boot: USB - EFI loader - GRUB2 - GRUB4DOS - ISO image Configuration files To boot GRUB4DOS I use this from grub.cfg: menuentry "image.iso" { linux /syslinux/grub.exe --config-file="/menu.lst" } My menu.lst is here: timeout 20 default 0 title image.iso find --set-root --ignore-floppies --ignore-cd //image.iso map --heads=0 --sectors-per-track=0 //image.iso (hd32) map --hook chainloader (hd32) This works perfectly with Legacy machines. However, when I come to GRUB4DOS, I don't see the menu with image.iso, I see only GRUB command line. That means that my menu.lst didn't load. Why is it like this? Background and ideas I have an idea that GRUB4DOS doesn't recognize my USB stick as a device. I tried the command find and got (hd0,0), (hd0,1), (hd0,2), (rd). When I tried to set root to any of these devices I don't see fat file system, how it was with Legacy machines. The root device is (hd0,0), which has ntfs file system which should be partition with Windows. EFI machines support only GRUB2, so I can't boot GRUB4DOS straight away. Please, don't suggest anything like this, because my image doesn't have kernel. You can imagine that you load HDAT2 or Hiren's boot cd, for example. menuentry "Blancco Blancco5.iso" { set isofile="/image.iso" loopback loop $isofile set root=(loop) linux /isolinux/vmlinuz isofile=$isofile splash quiet initrd /isolinux/initrd }

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  • FTP ASCII file from Windows to Mainframe (iSeries) — special characters

    - by MikeM
    I have a text file created on a Windows machine, the page coding used on the file is 1252 This file is then ftp'd to an iSeries machine for processing As far as I can see, it appears on the iSeries. It has a CCSID of 037. Sometimes this file contains French characters (e.g. é). When this happens, the FTP will fail with a truncation error as the french character gets converted to some extra junk: �. The file is fixed block so the line does get truncated due to the one character turning into 3. I can convert the French characters to characters without the accents before sending but would prefer to keep everything intact. So is there a way to retain them and send the file over properly? I'm very green on iSeries, mainly a Windows guy.

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  • Can I install Microsoft Visual Web Developer w/o a SQL Server Express installation?

    - by lavinio
    When I attempt to install Microsoft Visual Web Developer 2010 Express, it forces an installation of SQL Server 2008 Express, which is okay. However, it forces it to have the instance name SQLEXPRESS instead being the default instance. I tried installing SQL Server 2008 Express first, but the Web Platform Installer 3.0 still wants to download and install the named instance, which then I have to uninstall. I'm putting together a guide that several others in my group will follow, so I'd like to not have to tell them to "install, then uninstall". So, is there any reasonable way to either (1) install VWD w/o SS, or (2) install VWD but configure SS do use the default instance?

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  • Restrict iPhone messaging to corprate osx server messaging service

    - by Vincent
    I have not found much information about this. We have company owned iPhone and iPads. We would like our employees to be able to message but require all messaging traffic to go through our local mountain lion osx server (not setup yet). How would the phones and server need to be configured to accomplish this. Specifically is it possible to restrict the user from adding additional accounts? How about another app that would use the server? Do you know of any good documentation on setting up this service on osx server and iPhone? I am open to other solutions, opensource messaging servers.....

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  • DTaskManager Runtime '5' error?

    - by pcmantinker
    I really enjoy using DTaskManager as an alternative to Windows TaskManager, but recently I've been getting Runtime Error '5' messages. It looks like DTaskManager was programmed in Visual Basic 6, but it is quite powerful. I'm running Windows 7 Enterprise x64 so I suspect that the error might be coming from a Visual Basic runtime problem. I'm not sure which registry keys to edit to fix the Runtime Error '5' message.

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  • Save searches in Google Reader

    - by pinniger
    Ok, I’m trying to find a way to search my rss feeds in Google Reader every day for certain phrases. If any of the phrases are found, I want to be notified. I thought Google Alerts would do this no problem, but it does not. Does anybody know of any services or any other way of doing this?

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  • zfs setup question

    - by Staale
    Currently I have a linux storage box and server with 4x750gb harddrives in raid-5 with ext3. I have ordered 3x1.5tb disks to upgrade this. Here is my planned upgrade: Backup: Format the 1.5 tb disks Copy all data from the raid-5 disks to the 1.5tb disks Destroy the raid-5 array. New setup: Create a VirtualBox system and install Nexenta (OpenSolaris + ubuntu) on it. Create a zfs pool with zraid1 with the 4 750gb disks. Copy from 1.5tb disks to the virtualbox zfs pool Format the 1.5tb disks. Replace 3 off the 750gb disks with 1.5tb disks. Reuse the 750gb disks elsewhere. The reason I wish to use one 750gb disk is since I can't grow the disk count in a raidz array, and this gives me the option off replacing that disk later for an extra 750gb storage. Would the ZFS performance be good running through virtualbox? Or will the performance overhead be too large? Will I get 1.5tb+1.5tb+750gb storage on the zraid? Or just 750gbx3 until all disks are 1.5tb?

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  • OpenWrt logging: how to find out "wifi deauthentication"

    - by user62367
    If someone starts to use the wifi, i can see that with logread: Jan 23 21:04:47 router daemon.info hostapd: wlan0: STA XX:XX:XX:XX:XX:XX IEEE 802.11: authenticated But how can i see, that he/she's disconnecting? Theres no "bla-bla deauthenticated bla" line in logread, or even a thing that points to that someone get's disconnected.. I tried to google: http://wiki.openwrt.org/doc/uci/system But it doesn't writes about loglevel. Can anyone help me find out, how to find out that someone disconnects it's wifi from the router? The logread doesn't even writes a line when someone disconnects. Please help!! It's important! Thank you!:\

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