On Sun, Mar 12, 2017 at 4:42 PM alcinos <french.ebook.lo...@gmail.com>
wrote:
> Hi everyone,
>
> I have a question regarding profile change that I was not able to answer
> from the doc.
>
> The setting is the following: I have some Mlt objects (Producers and
> Consumers) that are created with a given Profile 1, and then used for a bit.
> Then I want to change the profile of all theses objects to another Profile
> 2 (without any assumptions on Profile 2, it may have different FPS,
> ColorSpace,…)
>
> What is the best method to do this? I've seen in the doc that the base
> class "Service" has a setter "set_profile", but does that do what I expect
> it to do ? In particular, if there are any filters attached to my objects
> (created with the old Profile 1), how is that going to work?
>
>
Yes, set_profile() does what you want to do. I have never tried what you
want to do. If you try it, you should do it when the consumer is stopped.
In Shotcut, I update the existing profile using the attributes of a new,
different profile and then restart the consumer. That is easier than trying
to set_profile on all nodes of a potentially large graph.
See here:
https://github.com/mltframework/shotcut/blob/master/src/mltcontroller.cpp#L439
It is possible that a service has saved a value from the profile into
itself, but that should be very rare, and I do not recall any that do that.
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