Playback freezes in Clip and Project Monitor...

Bug #500059 reported by cg49me on 2009-12-24
This bug affects 3 people
Affects Status Importance Assigned to Milestone
kdenlive (Ubuntu)
Rick Timmis

Bug Description

When I click the "play" button in the Monitor pane, it will begin playback of the highlighted clip/current project, and will be fine for a few seconds, but then will freeze. Occasionally I can hit the "pause" button and bring the program out of the freeze, but more often than not it quits responding and I have to force quit.

I'm running on an Acer Aspire One netbook with Intel Atom dual-core 1.6 GHz processor and 2 GB of RAM. I thought at first I might simply be asking too much of the machine, so I set the default video format to VGA NTSC (640x480), but I still get the same behavior.

Any help is appreciated!


I accidentally posted this under "Questions" to begin with. It was suggested there that I switch my Visual Effects (under the "Appearance" System Preference) to "None", however this had no effect.

cg49me (cg49me) wrote :

Crash Log

description: updated
KeegY (keeg147) wrote :

I have the exact same issue, except I am running it on a 2.26GHz + 4GB RAM machine (Kubuntu 9.10). The only thing I can think it to be is the fact that the file I am trying to play is 1.7GB. However I also tried it with a ~500MB file and still got some jitter / freezing. I love the software, but if I can't use it properly, then I may have to move on :(. I can also confirm that changing the desktop effects makes no difference. Maybe it's one of the dependencies not behaving right, I'm not sure. Kdenlive appears to have a lot of bugs when I Google it, but this is the first bug Ive come across that actually addresses my exact problem. Lastly, I have also had the same issue when using Ubuntu 9.10 with Gnome.

cg49me (cg49me) wrote :

Updated to the newest release, still experiencing the same problem.

cg49me (cg49me) wrote :

Crash Log

cg49me (cg49me) wrote :

Got it working. Don't know if it's a machine-specific fix or not, but here's what I did...

Go to Settings > Configure Kdenlive..., then select Playback on the left. Next to Audio driver:, select ALSA, and next to Audio device:, select whatever option you can (mine has ALC272 Analog, but I'm pretty sure that's specific to my netbook).

Restart Kdenlive, and you'll hopefully be on your way. I haven't had a problem since.

I read that alot of people were having problems using the PulseAudio drivers, which Kdenlive seems to want to use by default for whatever reason. Alot of people had to completely remove the PulseAudio packages from their computer, but I guess I lucked out.

KeegY (keeg147) wrote :

Wow. Really WOW! Thanks so much! After changing this, and aside from a few minor bugs (e.g. when applying the crop effect, it sometimes likes to crash), Kdenlive is behaving fine and I can actually use it productively. I am running Kubuntu 9.10 and Kdenlive 0.7.5

Rick Timmis (rick-timmis) wrote :

I am working on packaging updated versions of kdenlive, kdenlive-data, melt, libav-tools
Track progress via bug (LP: #1402216)

The plan is to have this all fixed up for 15.04 Vivid

Changed in kdenlive (Ubuntu):
assignee: nobody → Rick Timmis (rick-timmis)
status: New → In Progress
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