In my view the audio rendered in voukoder is 1 frame AFTER the original audio, just see that the peak of the audio signal is on the right, when compared to the original audio. This happens in mine and in your screenshot.
Sure. But previously you said 'ahead', not 'after'. I said 'behind' == 'after'.
Yes, I also have the new so4 decoder disabled in internal preferences as it does not work correctly with my AC3 5.1 audio streams.
I'm confirming that when the so4 option is in default value (TRUE), the audio in mp4 file rendered with voukoder connector 0.7.1 is in sync with original audio.
When the option is in non-default value (FALSE), the audio in rendered mp4 file is 1 frame behind.
You do not need to re-render, just change the option, restart VP, put original an rendered on timeline & compare.