Guys, I need your help: i just did a fresh install of Ubuntu 9.10, with no changes (i dl the live cd yesterday, and installed it, didnt upgrade it yet). I also installed ffplay (sudo apt-get install ffplay) and melt, and testet both of them with a .dv file that works: no luck, they both crash immediately.
Could you pls help me and get them to work? The thing is, that neither kdenlive (not the one installed from Karmics Softare Center, 0.75, and also not the 0.76 isntalled from the net) works (the preview monitor doesnt show the video when i press play, but if i move the cursor back and forth, i see the video)...

MELT ERROR:
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
|1=-10| |2= -5| |3= -2| |4= -1| |5= 0| |6= 1| |7= 2| |8= 5| |9= 10|
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
+---------------------------------------------------------------------+
| H = back 1 minute, L = forward 1 minute |
| h = previous frame, l = next frame |
| g = start of clip, j = next clip, k = previous clip |
| 0 = restart, q = quit, space = play |
+---------------------------------------------------------------------+
Segmentation fault 4

FFPLAY ERROR:
FFplay version SVN-r19352-4:0.5+svn20090706-2ubuntu2, Copyright (c) 2003-2009 Fabrice Bellard, et al.
configuration: --extra-version=4:0.5+svn20090706-2ubuntu2 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include --enable-shared --disable-static
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 0. 4. 0 / 0. 4. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Oct 13 2009 22:15:16, gcc: 4.4.1
Segmentation fault

try installing:

libsdl1.2debian-pulseaudio

or

libsdl1.2debian-all

and test again

make sure that kdenlive audio prefs are set to pulseaudio

No changes with none of them: ffplay, melt and aviplay still crash. Mplayer works.

melt -query producers
---
producers:
- qimage
- pgm
- melt
- melt_file
- vorbis
- avformat
- frei0r.ising0r
- frei0r.lissajous0r
- frei0r.nois0r
- frei0r.onecol0r
- frei0r.partik0l
- libdv
- pango
- pixbuf
- xml
- xml-string
- framebuffer
- color
- colour
- consumer
- loader
- hold
- noise
- ppm
- kino

Please, someone, help me...

Contrary to rico's advice, I would suggest removing pulseaudio using synaptic if it is installed as discussed elsewhere on this forum. Agreed you probably want to make sure libsdl1.2debian-all is installed.

Test the file in ffplay and melt.

I set kdenlive preferences to default (which presumably uses alsa).

Hope this helps. As discussed in several posts, I've had numerous weird problems with ffplay/melt/kdenlive when using pulseaudio. However, some have been okay with pulse.

I now installed kdenlive from the karmic's software center (0.75) - all of the required packages are installed - still the same error. Project monitor works if i manually move the cursor, but if i press play, there's no video (the whole project monitor is black, only the upper 1/10 gets some coloured lines)... Sound works.

I removed pulse audio (sudo apt-get purge pulseaudio): ffplay, melt and aviplay still dont work. Kdenlive now crashes when i press play (yes, audio prefferences are set to automatic).
Damn, i knew i should have not upaded ubuntu...

Add

deb http://ppa.launchpad.net/sunab/ppa/ubuntu karmic main
to your /etc/apt/sources.list
remove melt/mlt/kdenlive/pulseaudio
update and upgrade your system
then install kdenlive/mlt/melt/frei0r

This worked for me on fresh 9.10 Ubuntu 64bit., didn't work without the system upgrade.

Did as you told me to, now kdenlive crashes immediately after pressing play. And still, ffplay and melt, they also crash...

don't set audio to automatic, set it to pulseaudio or alsa (depending which one you are using)

I have tried all good ideas about the sound, but they are not working. Video works fine.
I have set it to Automatic, OSS, ALSA and PulseAudio. OSS crashes, and the other three sounds like a trans-atlactic phonecall in the forties = 90 % noise.
I have a 3 minute sound-clip from a park. it is a wav-file. In Audacity it sounds perfect, but in Kdenlive it is 90 % noise. Without changing the settings in between.
Any suggestions?
The sound on my Ubuntu 9.10 seems to work fine - except in Kdenlive.
UPDATED:
I have installed OpenShot, which is another editor like Kdenlive. It is based on GTK, MLT and programmed in Python. OpenShot has same audio-problem. It sucks.
I have tried to remove audiopulse. No effect, so I installed it again.
So: I still have a fresh Ubuntu 9.10 install. Audio works perfect, except in Kdenlive and OpenShot - the two pieces of software that use MLT.
Is there a problem in MLT, or in the combination Karmic Koala and MLT?
Any suggestions? Help, please...

It seems like nobody has any suggestions, so I have made my own solution.

I have made a Ubuntu dual-boot installation on my PC.
1) I have a 180 Gbyte installation with Ubuntu 9.10. Here everything works, except Kdenlive
2) I have a 100 Gbyte installation with Ubuntu 9.04. Here everything works, including Kdenlive.

They are installed on the same harddisc, with the same soundcard, and standard settings. I have not made any special settings.

I would be very nice, if someone could explain why it is so...

Thanks!

David

David, I am the MLT developer. I have not reproduced your problem with Ubuntu 9.10 on 2 installations (one in a VM). What I do get is a little crackling on one system using PulseAudio and libsdl1.2debian-pulseaudio, but you describe problem as much worse. Here are some tests for you on 9.10.
Do you get the same problem if you play a clip with ffplay?

If not, in Kdenlive, render a small clip or portion of a clip and play the result with ffplay, vlc, totem or whatever that you know is good. Does it have this heavy distortion?

I was having audio problems/program locking up on a clean Ubuntu 9.10 install. I performed step A below and that corrected my probelms.

http://ubuntuforums.org/showthread.php?t=789578

After a lot of removals and installations, it finally works - almost perfect.

DDennedy: I tried your suggestions. ffplay played a .wav file perfectly. Same file in Kdenlive sounded awful. I then tried to render a portion of a clip, and with the same problem.

After that I removed ffmpeg, Kdenlive and pulseaudio. I tried to install Kdenlive again, and suddenly (after a reboot) it worked. It must be the absence of pulseaudio, that made it work, but I have tried that once before, without any luck.

I'm back on the track, and I've been at the library to borrow some C++ books. I hope that I, sometime in the future, can be helpfull in the development of great software like Kdenlive, and the like...