Some issues with the plugin

[netcorefan1]

Hello,
after having hard time in getting the plugin compiled, I'm finally able to play video (for unknown reasons it only works when I rename from .vvc to .266), but it is basically unusable:

• I can't navigate video. I can only see it from the beginning to the end. Am I missing something?
• I'm experiencing the same issue when trying to merge audio (mp4box -add input.266 -add input.m4a -new output.mp4) and since many time has gone, I'm wondering if in the meantime has been found a workaround. The output I get from mp4box runs fine in ffplay, but it crashes VLC without even having chance to start. Is there anything that can be do? I don't care if it is needed further processing as long as it can also play audio.
  Thanks