[Kdenlive-devel] [PATCH] adapt to MLT extreme makeover

[Alberto Villa]

On Monday 11 May 2009 18:49:28 jb wrote:
> Yes. As previously commented, there is currently one producer by track for
> audio and av clips. This is needed to bypass an issue in MLT causing sound
> cracks if you try to mix the same producer with itself.

and this is not going to be fixed, i suppose :/

> Removing all kdenlive_producer and moving options to MLT's producer is
> possible, however one issue is that MLT does not save producers that are
> not used. So if you add a producer to your Kdenlive project but don't put
> it in timeline, it will not be saved by MLT's xml output, you will have to
> add it manually somewhere...

is kdenlive using mlt's xml output? i thought it was produced internally... 
then there's no way to change the actual behaviour, unless dan changes mlt

> I was also a bit worried that adding lots of properties (some of which can
> be rather long) to the Kdenlive clips (for example text clips have an
> "xmldata" field containing position and attributes for all the objects in
> the title clip), could add some overhead to MLT, but Dan seems to say it's
> ok...

it's quite useless if we have the issue above, anyway: the meta.kdenlive 
properties could be written only in the first producer, and we could use the 
N_x id format kdenlive is already using

> One small issue here too: I did not manage to save the MLT's tracks
> attributes, which is why I added Kdenlive's <trackinfo>. Maybe that needs
> some tweaks in MLT or maybe I just didn't try hard enough...

gosh. is 'type="audio"' the only property we would need to add?
-- 
Alberto Villa <villa.alberto at gmail.com>