Audio and video not in sync when imported to Vegas (SOLVED)

[Jamiboy]

Hey,
I am struggling with an issue that started randomly two days ago.

I use plays.tv to record gameplay and use Vegas 15 Pro to edit my plays. Ever since two days ago when I import the .mp4 files into Vegas the imported audio is not in sync with the video. When I replay the raw .mp4 files the audio and video are in perfect sync.

What can I do to fix this? If you need additional details, please ask and I will provide!

Thank you in advance!

Br
Jamiboy

[Jamiboy]

This is now solved.

EDIT: People seem to still rely on this post on never versions of Vegas and reporting this doesn't work on later versions. I do not have later version so I cannot test it myself. If the steps stated below doesn't work then I suggest going on official forums looking for answers. Hope you get things rolling.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

[Sir_0v3rk1ll]

OMG WHY ISNT THIS ADDRESSED ALREADY? THIS IS AN AMAZING FIX SIR. THANK YOU. THIS SHOULD BE PINNED OR SOMETHING. SONY PLEASE MAKE THIS A DEFAULT. YOU HAVE NO IDEAD WHAT I WENT THRU TRYING TO FIX THAT......THANK YOU SIR

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

[Jamiboy]

Haha cheers mate! Took a long time to find the fix

[Spazbo4]

for whatever reason this doesnt help me, i guess i'll just be going to back to vegas pro 14

[Sir_0v3rk1ll]

In case someone else is having problems with audio out of sync with H265 or HEVC do the same and it will also fix it. H264 and H265 are both ultimately mp4

[spanktron]

This fix worked for me THANK YOU SO MUCH.
I would not have figured this out on my own.. saved me a lot of time.
thank you thank you thank you

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

[SixnaskUnz]

Jamiboy の投稿を引用：

Hey,
I am struggling with an issue that started randomly two days ago.

I use plays.tv to record gameplay and use Vegas 15 Pro to edit my plays. Ever since two days ago when I import the .mp4 files into Vegas the imported audio is not in sync with the video. When I replay the raw .mp4 files the audio and video are in perfect sync.

What can I do to fix this? If you need additional details, please ask and I will provide!

Thank you in advance!

Br
Jamiboy

Thank a lot. it work!

[Davidio]

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

Thank you!! <3

[gamingdominari]

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

This actually worked! You legend!

[Jamiboy]

Thank you all for the kind replies! Happy video making everybody

[Beenie]

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

Holy sht I cannot thank you enough for this, you're seriously a life saver. THANK you!!

[Sckhar 🦊]

Jamiboy's fix works for Vegas 17 as well, just followed it and it's working perfectly, thanks a lot!

[tin]

after doing this, every time i imported an mp4 file with both audio and video vegas only detected it as if it was an mp3 or audio-only file, and the preview is just a black screen, any idea of what might be causing this?

[ChillTyme - Lane Janny]

Its amazing how this is still a problem and helped me now too!

[4815162342]

Jamiboy の投稿を引用：

This is now solved.

There is a new video decoder called so4compoundplug.dll. You can check if your video is decoded using this by importing a video in the timeline and right click the video -> select properties. On the general tab look under "Plug-in" and it should say: so4compoundplug.dll.

The actual fix is:

On the top menu -> go to options and while holding SHIFT -> Preferences
This opens the preferences window with some extra tabs.

Go to Internal tab.

At the bottom of the window you see "Show only prefs containing:"

Type in "so4" without the quotes.

Modify Enable So4 Compound Reader for AVC/M2TC to FALSE (default is true).

Restart Vegas Pro 15.0 and now importing videos should have audio and video in perfect sync.

This might mess up decoding iPhone videos and some other things, so keep this setting in mind as a future update should fix the issue.

you are the love of my life