Changing sound synch

[SurreySpring]

I've been playing with FLVExtract and YAMB to break up an FLV file and reassemble it (286 and AAC). I'm getting a sound and picture synch problem that I'd like to play at correcting the sound. WhenI use YAMB it simply joins the video and sound side by side - I'd like to play with the match a bit more. Doing things like stretch the sound file by a second or so over the file length or introduce a delay somewhere. Does anyone know of an application that will allow me to do this sort of playing?

[Baldrick]

Continue in your first similar thread. https://forum.videohelp.com/threads/340756-FLV-to-MPEG-4?p=2120438#post2120438 . I would just try reconvert to mp4.