I finally found it and had a quick check on it. The logcat shows that veetle is waiting for some response which seems not to come and then it ends the play. A report is send in the background to veetle.com. So I guess that they are aware of the problem. Not sure if I can do anything in the ROM to solve the problem. Veetle might have a problem with Android 4.2. I saw on the Google market that a lot of users are complaining about problems.
Sorry, I don't think I can help here.
PS:
I tried it on my Galaxy Note which is running Android 4.1 (CM10 based) and Veetle works there without problems.
Unfortunately I do not have a Android 4.2 ROM for my Note yet.
Maybe the problem is a combination of Android 4.x and tablet? Or a problem of the proprietary camera drivers coming from older Android version?????
I can confirm some things to you. I've a Galaxy Note too, with LSC 4.1.2 rom. Veetle is working perfectly on N7000. Fact is that Veetle, in HD mode, isn't working too on any CM10 4.1 rom on my P7500 (and there are other people reporting that on other threads).
This situation occurs for several months now, I don't think that Veetle crew is aware of that because not all devices have this trouble.
Unfortunately I'm not a dev, I wonder if you can find any element to solve this strange thing.
Still: thank you for your time, in any case.