General :: Repairing Broken Ogg / Theora Without Reencoding
Jul 1, 2010
I made a bunch of video files with Thoggen a few years back and now it seems I'm having issues with playback. As the audio and video are intact and VLC, mplayer and xine can all play the files perfectly and ffmpeg can happily reencode the files. I think I need to rebuild the container metadata without reencoding the video or audio streams but I'm not entirely sure exactly how to do this without using avidemux, which won't work for me.
Technical stuff follows:
VLC works but complains
Code:
charles@wintermute:~/Videos/tmp$ vlc broken.ogg
VLC media player 1.0.6 Goldeneye
[0xff94b8] main libvlc: Running vlc with the default interface.
Use 'cvlc' to use vlc without interface.
TagLib: Vorbis::File::read() - Could not find the Vorbis comment header.
[0x126af18] main input error: ES_OUT_RESET_PCR called
[0x1787f18] pulse audio output: No. of Audio Channels: 2
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::begin: Paint device returned engine == 0, type: 1
MythTV gives me silent video .....
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May 13, 2010
I forgot that Python is actually essential to Gnome and wanted to update to 3.1, and didn't realize my mistake until some of Gnome had been removed, then I Ctrl+C'd out. Now I can't even connect to the internet to repair my broken packages. I'm out of town for Mother's Day, but in the car it occured to me that I should have tried my Live CD.
As a side issue, is it alright to install more than one version of Python? I'm guessing so, so long as I keep track of which one I'm calling. I used apt-cdrom to update my sources.list appropriately so I could apt-get from the Live CD, but apt complained about locales. Now sources.list has strangely lost the cdrom line, but I'll put it back when I next boot to repair mode.
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Apr 27, 2011
Basically, my Ubuntu 10.10 desktop crashed and now when I try to boot into it I get all sorts of error messages and then I get dropped into a shell - it can't find the device etc. I tried running fsck from the command line but it can't find it. My DVD Drive isn't reading properly so I have no way of running the Recovery software on there.
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May 24, 2011
Just came up my mind about repairing the bad sectors using software.Does using a software really repair the bad sectors in the hard disk?
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Jan 4, 2011
I have Parckard Bell Easynote B.V and i partitioned it in three forms C and D for windows in which D is used for backup E for Debian and i installed xp and debian were just running excellent later i thought of upgrading XP to win 7,after upgrading i had grub issues which i managed to repair but after repairing on the operating system list it still displays windows XP and no windows 7 on the list.i am stuck.
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Jul 29, 2010
I was having some trouble trying to get video editing directly with Theora OGVs on Ubuntu 10.04. To be honest, the default Lucid video editor Pitivi (which is a front-end for gstreamer) actually works fine with ogv - but you cannot do video overlays (compositing) in Pitivi. So I looked at Cinelerra, LiVES, OpenShot and Kdenlive as editors that may offer overlays/compositing. They can all be sudo apt-get install-ed, but none of them wanted to run properly with ogvs - especially the ogv video preview didn't work. Looking for a solution, the following bugs came up:
Bug #574457 in mlt (Ubuntu): �melt displays and renders garbage while playing .ogv in ubuntu 10.04�
Bug #535018 in openshot (Ubuntu): �Openshot cannot playback ogg video�
Bug #566781 in OpenShot Video Editor: �Imported Ogg Theora file shows corrupted video in OpenShot 1.1.3�
[code].....
However, since it doesn't seem a bugfix will be released for Lucid - that pretty much means only one thing, if we want video editing of ogv in Lucid: build from source. If we build all dependencies for Theora ogv video from the latest source: melt
ffmpeg
vorbis
theora
ogg
then, in principle, working with ogv in Openshot and/or Kdenlive should (and does) work - if these video editors are directed to use these new binaries (built from source). Note that Openshot is basically a python frontend for melt, and it does not need compiling as such (though some precautions should be taken, see below) - so once the above sources are built, a test with Openshot can be done. I used for building these sources is HOWTO: Install and use the latest FFmpeg and x264 - Ubuntu Forums This HOWTO uses checkinstall in order to generate .deb packages from source, which are then installed into the running OS, to allow for satisfying of dependencies. I'd like to keep my system 'vanilla' clean, and experiment with sources outside of my system (i.e. as in a "portable installation") - and this post outlines that approach.
Basically, we download the sources, and build them in order of dependency - and since ogg/vorbis/theora source already uses it, we can use pkg-config to configure some other source dependencies as well: by writing *-uninstalled.pc files in respective source directories; and then adding these directories to the PKG_CONFIG_PATH environment variable. However, some manual changes to source files will be needed too. Finally, for each source package, we will run only 'make', but not 'make install' - and then in the end, we will collect all binaries (libraries and executables) in a single folder; and add a couple of scripts, that will setup an environment referring to these binaries, so that Openshot/Kdenlive (when called from this environment) may work correctly with ogv. The full list of sources built using this approach are: ogg
vorbis
theora
[code]....
Both x264, and libvpx (for VP8/WebM), have been added as recommended in the HOWTO; while Ogg Video Tools are added mostly for the (relatively new) tool oggTranscode. The approach to building these sources is given below, in the form of a commented bash script - since its quite big, it is included in the reply to this post.
References: Xiph.org: Subversion Access
oggvideotools/trunk/README
Compiled libogg but libvorbis can't find libogg during ./configure - Linux Forums
[cod]....
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Jan 18, 2011
If I were to take a flac music file and convert it to alac using ffmpeg would there be any degradation of audio quality? I am also wondering how many people are actually able to tell the difference between a high quality MP3 and a lossless file. If I were to find a suitable place to upload a load of different files would people be willing to judge the audio quality?
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Nov 17, 2010
I have a camera that produces MOV videos (h264, pcm). I'd like to join all the videos to one MKV video and change it's resolution.So far I've discovered this way how to do it which seems a little too complicated to me:First I convert those MOVs to AVIs with ffmpeg - no re-encoding, just copy video and audio tracks. This had to be done before mencoding otherwise mencoder destroys the video (seems like it's good in joining AVIs, but not MOVs). Then I join those with mencoder to one giant AVI (still no re-encoding) and then I convert this AVI again with ffmpeg to desired MKV with x264 and vorbis.
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Sep 21, 2009
I'm wondering if there is a way to remove GRUB from a live CD, then reinstall it?
I have three hard disks. What happened is, for some reason in the installer, it thought sda had the MBR on it. But in reality, sdb has the MBR. So when I rebooted, seeing as how I have installs of windows on sda and sdb, GRUB never appeared, and I got the windows bootloader screen.
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Jun 25, 2010
During the upgrade of my slackware from 13.0 to 13.1 an electric problem happen on my sony laptop. So the upgrade is fine, disk is fine but no time to run the lilo for configure the new boot. Now impossible to boot. I boot on a backtrack live CD, and can't repair my lilo.Is someone could help me. I use slackware since the 3.2 (kheops in french).
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May 29, 2011
my ENTIRE hard drive now has user AND group permissions root. I can't start X and are having various permissions issues. although ive been using linux for a long time.
long story long, I did a debian netinst to my netbooks SSD. got everything EXACTLY as I wanted it, was very happy with my first go at debian but of course being a linux dork im always willing to tweak. I installed onto btrfs which I recently learned supports compression which not only saved precious SSD space (only 8GBs) but according to some benchmarks also improved performance. this was a boot option and would only start compressing new files. this, of course, could not be good enough. so I formatted my SD card btrfs, mounted it with compress option + my SSD defaults and copied over all files that weren't a mount (i.e. proc, dev, sys,...) however I forgot to copy permissions. so every file was copied with root:root ownership and I didn't realize this when booting to the SD card to verify things were working as I assumed ( never do this ) that getting to a login terminal was enough. So now I need to fix all permissions and I would really prefer it be without a clean install.
A netinst can take a dec amount of time and I had a lot of tweaking to do since I only used Xorg + i3 tiling wm. there has to be a way to fix this...I started trying to reinstall all the packages but kept running into issued where aptitude wasn't able to reinstall things like bash or perl-base, presumably bc they were in use or had incorrect permissions set
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Jun 30, 2010
We have a Fedora11 installation that we Ghosted (Norton Ghost) to a bigger Hard Disk because the old one was failing
I know there is an extra step for linux where you fix fstab because it points to all the wrong locations, could someone walk me through this or link me to somewhere that can walk me through it?
Do I need to do this editing from a Fedora 11 Live CD (as its gone missing) or will a Fedora 13 CD do the trick?
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Nov 27, 2010
repairing the MBR on my raid array. I have three disks, each with three paritions:root (sda1 sdb1 sdc1) 59GB swap (sda2 sdb2 sdc2) 1.12GB grub/boot (sda3 sdb3 sdc3) 298MB I have been able to get this running and it has been working fine for several months. A few days ago, I installed 10.04 to a USB stick but did not disable the hard drives at that point and so the MBR was overwritten. If I leave the USB stick in, it boots fine from that stick. However now I can't get the boot from the raid array to work correctly. I can do the following:Load 10.04 from the Live CD install mdadm recreate the root partition using
Code:
mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1
I can mount and view the files on md0 with no problems. It's not corrupted in any way. When I installed, I followed the directions to make each of the grub drives bootable. However I don't know for sure whether grub was installed on each partition separately or if it was installed on the assembled partition only. I have tried using
Code:
sudo grub-install /dev/sda3
and got warnings, something to the effect
Code:
Cannot find a device for /boot/grub
no path or device specified
Auto-detection of a filesystem module failed
specify the module with option '--module' explicitly
I have also been able to get to the grub rescue prompt but my keyboard (wireless USB) is not recognized and so I can't type anything in at that point.
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Feb 5, 2011
When I hook it up to my Mac the hard drive shows up in Disk Utility but it can't mount it nor fix it. I don't have Diskwarrior (or similar programs) so I was wondering if I could fix it from my Linux boxes (xubuntu). So my question is, is there a program in Linux that could extract the data from the drive or (even better) fix it?
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Feb 9, 2011
I have Ubuntu 10.10 installed on my computer (no other OS) and it wont boot up. I don't want to lose the files in my documents. I tried accessing them using a live CD and then copying them from the harddrive (home folder then 'richard' then documents then tried to open the folder but I dont have permission to and there seems to be no way of changing this.
The files are definitely on my harddrive but I dont seem to have a way of accessing them!
Is there anyway of either accessing them and copying them to a usb etc or repairing my installation of ubuntu without erasing the files in my documents? Opening in recovery mode etc wont work.
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Jan 27, 2010
I have two operating systems on my PC, 1- Fedora 12 2- Windows XP. when I re-install windows xp on PC yesterday, and reboot system, doesn't display grub menu to select a OS!! I tried to repair it with fc12 DVD 32bit, but it doesn't have any option for repairing grub (fc10 DVD had this option!!)
Code:
1. Resure install ...
go to shell and type:
2. chroot /mnt/sysimage
3. grub-install /dev/sda
4. exit
5. exit
and it without any error, said successfully done. when I reboot system and choose fedora from grub menu, fedora doesn't start and in black startup screen said:
Code:
SELinus target ...
take very times... dependence hard disk speed ....
****************************
****************************
what can I do for repairing it?
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Feb 3, 2010
I am facing some issues with my openSUSE 11.2 installtion. Yesterday i installed win 7 so the grub is now wiped out. I have also taken mbr backup in USB. I tried following things to make things work.[/HTML]
1) Repair using openSUSE DVD booted using DVD then automatic repair but it couldn't find any root partition. After showing error that no root partition found it crashes to a blue screen with advanced configurations from there i was able to use shell but cant see and mount any linux partitions. i tried mounting the root partition it gave the error :"please load module ext4dev before mounting" how can i install grub without losing my present installations.
2) Tried booting with Ubuntu & kubuntu 8.04 live cd .. both gave a error and refused to boot. then tried openSolaris which failed to detect the USB drive so couldnt restore the GRUB to /dev/hda.
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Mar 24, 2010
After installing the recent kernel update and rebooting my machine I have found a horrible fact, my computer won't boot anymore. It seems my root partition was corrupted, and running fsck on it just sends me through a endless loop of "Ignore Errors {y}:" and "Force overwrite {y}:". I have already tried the use the repair system on the installation DVD but that doesn't do anything, the pop up asking if I want to repair the file system keeps coming up when I click repair.
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Jun 3, 2011
I'm having difficulty repairing/reformatting a USB drive. I've yet to explore and get me on the right track. I'm sure I'm missing something obvious. I have a generic USB drive, 4GB, currently formatted FAT. I can't save files to it, can't format it using Ubuntu's Disk Utility. Attempts to format using Disk Utility return the following error:
Error creating partition table: helper exited with exit code 1: Error calling fsync(2) on /dev/sdb: Input/output error Yesterday I got fed up and tried to just zero the thing out using a dd command... ran it in verbose, the right stuff returned to screen, still no dice. I can't get it to a point where I can format it either using Disk Utility or mkfs.
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May 5, 2011
Using redhat linux el5, when I had booted I had pbm repairing filesystem. So I run following commands
1. fsck -l
2. fsck
But I cannot solve the pbm. My pbm is I had important folder "backup" in root folder just I want to copy it in pendrive how to do it.
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May 2, 2011
I have a fubar'd Windows 7 install I need to get working on another partition so I can do some development stuff. I use Ubuntu 95% of the time though and so the machine has an option at boot for what OS I want to go into. Does anyone know if I boot up with the Windows disc in and choose the repair option if it will screw up my boot options and I potentially lose my ability to boot into Ubuntu?
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Feb 21, 2011
i was trying to do some maintenance on the database and i have the following problem when looking at the database with phpmyadmin on the site
Code:
Table Ation Records Type Collation Size Overhead
uc_order_products_pair_vw Browse Structure Search Insert Empty Drop ~01 View --- unknown -
uc_order_products_qty_vw Browse Structure Search Insert Empty Drop ~01 View --- unknown -
uc_order_products_user_vw Browse Structure Search Insert Empty Drop ~01 View --- unknown -
[Code].....
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Apr 4, 2011
I'm running an Acer Aspire 1830T-3721 dual-booting Windows 7 with Ubuntu 10.10 (Desktop).
Background: So first I dropped my laptop a couple feet while Windows was running. The laptop immediately shut off and then tried to boot. Booting Windows results in an unfortunate "Windows has encountered a problem communicating with a device connected to your computer. The error can be caused by ... faulty hardware ... Status: Oxc00000e9 Info: An unexpected I/O error has occurred." But Ubuntu booted fine, and could access my NTFS files fine, so I was trying to work on the problem from there. I try a few utilities, looking at the partition table, etc without actually applying any changes.
Then I run a fsck on the drive. It loudly warns me that if I continue on a mounted drive, then I'm going to mess things up. In a moment of stupidity I push on, thinking that surely it would ask me for more configuration, or confirmation, before actually starting. The fsck runs for about 1 second before I Ctrl-C it, running some preliminary stuff and then just starting pass 1.
After this, Ubuntu won't boot anymore. Instead, it hangs just after the init-bottom script runs. If I boot with init=/bin/bash, I can get to a shell, and see that my file system is still there, but not sure what else to do.
I've been running off of a SysRescCD LiveCD, from which I've looked at the drive with testdisk. Testdisk reports that "the hard disk seems too small" while showing me the partition table.
I ran a fsck on the Linux partition; it fixed a bunch of things. There has been no apparent effect on the boot behavior.
I can access all my files, back them up, and reinstall Ubuntu, but I'm hoping there's a better solution, perhaps one that will also help me repair my Windows installation (but I'm looking at one problem at a time here).
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May 21, 2010
i'm running debian lenny - latest stable i have recently installed smartcam (mobile phone as webcam over bluetooth) from .deb package , get errors of unmet dependency , but application works like a charm, unfortunately broken dependences block my aptitude , i cant fix them either as latest stable use older versions of dependences even in backports... how do i mark smartcam package as not broken and release my apt?
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Mar 22, 2011
I am trying to boot up Vista Home Premium from USB since my internal (bootable) CD-RW drive has failed and I cannot boot up Vista from CD.
I have Ubuntu running in the Windows partition and all my windows files are in there so I don't want to do a full installation of Ubuntu (yet).
I formatted an 8GB USB stick into two partitions
I then copied over to /dev/sdb1 all files from a Vista CD using an external CD-RW drive (which is not recognised as bootable on USB port).
In my Dell BIOS settings I changed the boot sequence to be bootable from USB disk first.
then I tried to reboot Vista installation in the USB stick.
But I get this message ..."this is not a bootable disk .. insert a bootable floppy"
So I could not boot up the Vista installation files.
When the boot flag is "on" in a GParted created partition does this make the partition DOS bootable for Vista installation?
My question is - What utility in Ubuntu 10.10 can create a DOS bootable partition on a USB stick? It seems that the MBR might have been overwritten when I installed Grub 2.0.
I can Grub dual boot between Windows and Ubuntu but I can't get very far with Windows .. stalls in safe mode.
So a Vista repair is called for. I would prefer not to reinstall Vista afresh at this stage.
There is a thread here explaining how to repair Vista bootloader
[url]
But it assumes that I am able to boot from CD-RW drive.
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Jul 8, 2010
Preparing to replace mysql-server-5.1 5.1.41-3ubuntu12.1 (using .../mysql-server-5.1_5.1.41-3ubuntu12.3_amd64.deb).It hangs until i reboot the thing. This is not a normal error.I'm trying to fix it for at least 10 days.No Success.It happens when i try any package operation.
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Aug 23, 2010
I did the system updates and one package was listed - yum-3.2.28.3 so I installed it Friday. Since then I can't install new packages. The gui package manager errors out. yum also errors out. I have a desktop with yum-3.2.27 and it installs the same packages with no problems.
[Code]...
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Jan 20, 2011
I have a number of problems with Exaile. In my old windows days, I would try to fix a broken application by uninstalling and reinstalling it. Is that the best way to fix a Linux application that stops working?
I am running Ubuntu 10.04 on a HP Pavillion laptop. Exaile worked fine for a while, but then stopped downloading the Shoutcast station listings.
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Jan 19, 2010
I should know how to do this, but. Using Ubuntu Jaunty. I have tried using dpkg --purge no joy
Code:
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Apr 8, 2010
I am running centos 4.5 Kernel. 2.6.18
My ifconfig is broken. and i dont know how to fix it.
I go into /sbin and i see the file but when i try and execute the command is says bash: ifconfig: command not found.
The permissions on the file are as follows:
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