Hi. Anyone else having an issue where the video window is just black and there's no video? Everything worked fine up until a couple of days ago. And it's only in Sonar that this is happening, I can see the video just fine in other programs like soundforge. The thumbnail frames are visible in the video track but the actual video is invisible. Yes, the video window is open. Unluckily, here at work, we're shipping a game at the end of the month and I'm under an insane deadline to post sfx to animations. And suddenly I can't see video. 
 
 
I've rebooted several times. 
 
Anyone...?
anyone....?
 
Bueller...?

I think I've fixed it. For anyone else dealing with this, it appears its the media foundation engine that's the culprit. to change it to directshow (which works):
 
To specify the default video engine
When importing a video file, SONAR will first attempt to use the default Media Foundation video engine. If the video format is not supported, SONAR will next attempt to use the legacy DirectShow video engine.
To specify the default video engine:
1.
Go to Edit > Preferences > Audio - Configuration File.

2.
Under Configuration Settings, click Edit Config File.

The Aud.ini file opens in the default Windows text editor.
3.
In Aud.ini, create a new [Video] section and add a new entry called VideoEngine and set its value to 0. For example:

[Video]
VideoEngine=0
Valid values are as follows:

0 = DirectShow engine.


1 = Media Foundation engine (default).

4.
Save Aud.ini and close the Windows text editor.

5.
Click Reload Config Settings to reload the current audio configuration settings from Aud.ini.

I stand corrected. That did NOT fix it. Same issue happened when I imported a new video. 

Have you tried a different video file format? Whenever I have video files that give me fits, I open it in Sony Movie Maker (cheapest version of Vegas) and export a mp4. Well spent $50.00
 
Good luck!

Sorry, can't repro so don't know what to say other than it doesn't appear related to the latest update.

try this....
 
just insert a silent audio track in your project....

I'm having the same problem; the video is there, but it does not show up in the display. I adjusted the level of some of the audio track and saved the video as wmv. It played back fine in another program with the new audio levels.
 
I have tried different formats, but it doesn't help. It worked fine last week, but now it doesn't.

By the way, is that the Craig Anderton who wrote Electronic Projects For Musicians and many other books and articles?
 

Richardo
By the way, is that the Craig Anderton who wrote Electronic Projects For Musicians and many other books and articles?

 
Yup.