Guys. First time i have such problem in VSE and never before had this .I am using VSE very often for more than one year.
Audio/Video out of sync in rendered video, but not in VSE. There was same thread here few years ago (http://blender.stackexchange.com/questions/31471/audio-video-out-of-sync-in-rendered-video-but-not-in-vse)
…but after reading it i dont understand what those developers or programmers are talking about and i dont see the solution there.
I will tell you what i did. I am making tutorial so i made a screen capture. Also i made a few photos.
I went to the Blender and started to edit all of that and cut it many times, i was adding many speed control effects (to match up with the length of audio). So the video is overall 16 minutes long. Then i enabled Video Audio sync option. And i started to render it in loseless format, 25 fps. Everything is perfect in VSE editor window but its out of sync in render window. For example in render window frame 2100 is the same that in VSE frame 3900. And i see same frame twice in render - first time i see this frame at frame 2100 and second time same frame in render window i see at frame 3500 or 3900(dont remember exactly but if its important will render it again and tell you). But if i go to VSE there is no repetition like that and everything is in sync.
Is there simple solution to that or in order to sort it i have to make same difficult math and use logic and calculate all of the videos fps and to know how codecs are working, how compression is happening…exetra exetra