Re: [Mlt-devel] jackrack option in 0.7.3GIT causes segfault and numerous librdf error messages
Brought to you by:
ddennedy,
lilo_booter
From: Dan D. <da...@de...> - 2011-05-18 00:35:52
|
On Tue, May 17, 2011 at 4:52 PM, <in...@ba...> wrote: > Hi, > > Firstly thanks for the nice jack options finding their way into MLT, they > are welcome indeed! > > I have observed some problems in building recent 0.7.3GIT with jackrack > enabled. I develop AV Linux and have a whole host of audio related libs > within the distribution. I have observed in MLT builds with jackrack > enabled and 'dssi-vst' installed will result in melt segfaulting following > a dssi-vst scan. The scan is due to the recent ladspa identifying commits, > dssi-vst will allow Windows VST audio plugins to appear as ladspa plugins > so when melt launches and queries the system for ladspa plugins it will > include dssi-vst to scan them after which melt segfaults. Uninstalling > dssi-vst fixes the segfault. I have dssi-vst on my KXStudio box where I developed this enhancement, but I did not see this. What do you think can I do to prevent this? Does JACK Rack suffer this problem on your system? > Related to this is also an issue with Kdenlive and ladspa plugins (with > dssi-vst installed). When Kdenlive 0.8 is launched from the terminal MLT > will scan the ladspa plugins and end up in a terminal loop showing the > message 'librdf model not supported in this context'. After a delay of a The MLT plugin does not use librdf directly. Maybe it is related to dssi-vst. > few minutes Kdenlive will finally launch. Since Openshot 1.31 is less How recent is your MLT checkout? I noticed a big performance hit when launching Kdenlive and addressed it May 14. Please update if you believe yours is older. Otherwise, I may need to add some caching to improve performance. > audio intuitive so seems to work fine and probably doesn't utilize > jackrack or ladspa so is not troubled by this. Yes, Kdenlive iterates all the MLT services and fetches metadata for each of them. > I know these features are in early development but I thought I'd share my > findings so far. Building MLT with jackrack disabled works fine with both > Kdenlive 0.8 and Openshot 1.31 currently. > > Thanks for your efforts, Glen MacArthur - AV Linux Maintainer > Do you think I should be able to reproduce these problems in AV Linux 4.2 running in a virtual machine? -- +-DRD-+ |