v7.28.0

What's Changed

This fixes a couple of major regressions in the previous version 7.26.0:

• Fixed seeking and frozen video due by reverting "Improved performance with intra-only video and reducing the frame rate."
• Fixed using melt to render MLT XML with OpenGL effects from movit.

Other fixes and changes:

• Deprecated the composite transition and the sdl and ndi modules.
• Fixed Android camera video has the wrong frame rate (broken in v7.26.0).
• Fixed audio not playing for audio-only DTS WMA.
• Fixed using "https:" URLs in the xml producer.
• Fixed crash on exit when running melt -query or melt -query links.
• Added a transition property to the watermark filter. Now, it defaults to using affine.
• Changed affine transition argument to set rect property if supplied.