I still can't render after the update either.
And Kdenlive is back to freezing instead of chrashing when I try rendering after this update.

I think the issue is with the git 'svn' version, from your description you have removed the Ubuntu repo version and added the stable version from sunabs PPA.

However if you install the svn version from sunabs svn PPA can you still render?

I am really stuck and can't get it to work even when I revert. Ubuntu 11.10 x64. Was very happily using the sunab svn release.

I removed the svn release from the software sources, purged kdenlive and melt. Then installed from the sunab/kdenlive-release as per this page...http://www.kdenlive.org/user-manual/downloading-and-installing-kdenlive/pre-compiled-packages/ubuntu-packages

I even deleted the kdenliverc file (I also just renamed the .kde folder.)

My rendering is completely broken.

For your information, the latest MLT version that should fix most recent crash problems is currently waiting to build in sunab's svn repository, should be ready in about 10 hours.

Reverting to sunabs release PPA works for me, I completely removed MLT related files as well though. Then installed the 8.2.1 release which was built 7 weeks ago, I see sunabs svn is waiting to build?

It's the risk in becoming used to and in a way relying on an unstable TESTING build.

So to avoid this problem again it would make sense to use sunabs stable release PPA via synaptic and use the build scripts on the wiki here: http://www.mltframework.org/twiki/bin/view/MLT/BuildScripts instead of sunabs svn PPA, the wiki build scripts build from git to a dated folder within the home directory each time the script is run, so when a git build becomes a problem as currently it's easy to revert back to a working git build from a previously dated folder or alternatively use the stable. So both stable and unstable can be installed on the same system. :-)

Of coarse there is still the risk of compatibility problems at project level arising from doing that I guess as development moves on.

Just updated to the latest version with no changes. Still crashes as soon as I try to render. It doesn't matter what codec I choose. Ubuntu 11.10 - kdenlive 0.8.3+git20120128.821fc6d0-0ubuntu0~sunab~oneiric1

Rendering still doesn't work for me, no crash just failed rendering. Ubuntu 11.10 64bit latest sunab svn.

Me to.

Kdenlive doesn't crash now, just the rendering of the project.
It was the same some days ago when the rendering problems began.

Then it changed after updates, depending on whether it has been Kdenlive update or other updates in the Update Manager, Kdenlive either crashed when trying to render, or it froze when trying to render (having to close the computer to close Kdenlive, and if not restarting the computer Kdenlive taking up 100% of one of my cores).

Now the rendering chrashes but Kdenlive still functions in other aspects.

I'm no expert on Linux, but through the latest updates there has been an iregularity to the Update Manager and Kdenlive.
It is concerning "melt". When it was in the Update Manager I was not abble to choose it for updating, other updates was okay.

I then unistalled Openshot(probably not important), and then I did an update and afterwards an upgrade qua the terminal, and afterwards Melt was not in the update manager.
And I could see that the small changes through the terminal-upgrade made was concerning Kdenlive and Melt.

As I said, not and expert on either Linux nor Kdenlive(as a software) so these are just some observations that may help.

I found the rendering crash problem and posted a patch on MLT's mailing list. Ubuntu 11.10 uses libav 0.7, and the crash is caused by an api change not working on that version. Hopefully that should be fixed in git and packages soon.

Excellent many thanks jbm and great work on the job system.

@woookieproject:

The fix for the rendering crash has now been committed to git, but is not yet available in the sunab ubuntu packages (current MLT version is from the 29th of january 2012, but you need a version >= 31 january 2012 to get the fix). Should come with the next update, probably in 2-3 days.

Greetings - I have read through this chain and I have the same symptoms. Also I am confused about a few things.

I run ubuntu 11.10 on 64-bit machine. kdenlive version is 8.2.1 and melt version is 0.7.7+git20111211, and both came through the sunab ppa

Ran a rendering script and got this output:

reid@rsv-linux:~/Video2/CAC Lunar New Year 2012$ ./script001.sh
//STARTING RENDERING: false , false , "/usr/bin/melt" , "dv_ntsc" , "avformat" , "-" , "/home/reid/kdenlive/scripts/script001.sh.mlt" , "/home/reid/Video2/CAC Lunar New Year 2012/CAC Lunar New Year 2012.vob" , () , ("f=dvd", "vcodec=mpeg2video", "acodec=ac3", "s=720x480", "vb=6000k", "maxrate=9000k", "minrate=0", "bufsize=1835008", "packetsize=2048", "muxrate=10080000", "ab=192k", "ar=48000", "g=18", "me_range=63", "trellis=1", "mlt_profile=dv_ntsc_wide", "pass=1", "threads=8", "real_time=-1") , -1 , -1
Started render process: "/usr/bin/melt" "/home/reid/kdenlive/scripts/script001.sh.mlt -profile dv_ntsc -consumer avformat:/home/reid/Video2/CAC Lunar New Year 2012/CAC Lunar New Year 2012.vob progress=1 f=dvd vcodec=mpeg2video acodec=ac3 s=720x480 vb=6000k maxrate=9000k minrate=0 bufsize=1835008 packetsize=2048 muxrate=10080000 ab=192k ar=48000 g=18 me_range=63 trellis=1 mlt_profile=dv_ntsc_wide pass=1 threads=8 real_time=-1"
"Rendering of /home/reid/Video2/CAC Lunar New Year 2012/CAC Lunar New Year 2012.vob aborted, resulting video will probably be corrupted."

Here's my understanding...The 8.2.1 is described as the more stable version, but that's just the kdenlive code. The bug is in MELT, which should be distributed also through the sunab ppa updates sometime in the next few days. Sound right?

Thanks for your patience.

RSV869

Here's how it worked for me.

first I removed my existing ppa:sunab entries from the sources.

next, using synaptic, I removed kdenlive and kdenlive-data, then melt, AND the associated mlt librarys. Three of them. If you just remove melt and not the libs it won't get fixed.

from the command line I used this command:

sudo add-apt-repository ppa:sunab/kdenlive-release && sudo apt-get update && sudo apt-get install kdenlive.

when it comes back, melt and the librarys are downgraded to 0.7.6 and everything works, for me.

Hope this helps.

RSV869

Hallelujah! I can render again! Hats off to RSV869, I owe you a beer!

I am also on Ubuntu 11.10 64. I was using the SVN version and downgrading to the release version was not enough to correct the problem.
So I removed the svn and release PPA from the software sources.
Uninstalled Kdenlive, kdenlive-data, melt, libmlt4, libmlt-data, as well as libmlt++3. I also tried to uninstall libc6 but got an error message so I skipped it.. It was not required in the end.

Then I re-added the kdenlive-release PPA and installed kdenlive (which also installed all above named packages) and IT WORKS.. I can render again.

Cheers...

Just updated through the update manager this morning (Danish time) and Kdenlive is rendering.

It is quite a long project though so in some hours I'll see what the result is like.

Greetings