Remove use of melt

[moimael]

Hi,

Now we are using melt to retrieve the list of transitions, codec and formats.

It's a little "crappy" way to do things. We use a testing CLI interface to mlt instead of using mlt directly.

It would be quicker and cleaner to directly access mlt, i made a demo patch who takes me a few minutes to show that it's possible.

If doing so, we can remove the melt command entry in the preferences window, user should not care of that ;)

Thanks.

[Andy Finch (fincha)]

Correct me if I'm wrong, but the patch as applied won't fullly remove the use of melt, av_formats.py is still using melt to get the list of codecs/formats.

[moimael (moimael)]

You are right, it's just a first step, but we should be able to remove it completly soon with newer version of mlt.

[moimael (moimael)]

Done in the gtk3 branch

[Andy Finch (fincha)]

1 side effect of this to take note of is that we will now require MLT 0.6 or 0.6.2 (not entirely sure which one) as a minimum.