The AAC encoder in Shotcut seems to be very inefficient and sounds really bad at bitrates like 192kbit/s which is no issue for the Vegas AAC codec. Open Source encoders like NeroAAC are probably a good choice. And since I am muxing 23,976fps videos with PAL from a 25fps source, it would be very nice to have a option to change the FPS of a video which then affects the speed of the playback. I know this can take some time, but these are features I love in Vegas which I would love to see in Shotcut since Vegas has color problems which limit my workflow there (colors are just wrong no matter what I do)
We use the AAC encoder built into FFmpeg and will not be integrating anything else unless FFmpeg does. The FDK implementation is not acceptable due to licensing restrictions.
And what about the speed changing using framerates?
That is very esoteric, and I am not going to work on it before the long list of more basic and important things. Maybe someone else will.