Bug in 10+ when joining two video files?

mxyzptlk · Post by **mxyzptlk** » Sun Jul 16, 2006 12:04 am

I have two video mpeg2 files (with exactly the same properties) that I'm joining and creating a new video file (with the same properties). When I do this in VS 10+, the new video plays the first original video fine, but goes blank or freezes when it reaches the second original video. I tried this multiple times and got the same flaky results. I tried doing this in VS9 (still have this on my system) and it worked fine, just perfect. SOOO....is this a known bug in 10+? If so, when will a fix be provided? Fortunately I still have VS9 to fall back on.

trachgirl · Post by **trachgirl** » Sun Jul 16, 2006 12:36 am

I am having the same problem. I don't know how to fix it but at least I know it's not just me. It is driving me crazy. I hope someone is able to help!

trachgirl

Post by **Ron P.** » Sun Jul 16, 2006 2:07 am

It would help if you would post the properties of your video files, project properties, and your properties in the burn module.

When you are joining the 2 video files, are you keeping the properties the same? Are the properties of the 2 video files the same or different?

Ron P.

mxyzptlk · Post by **mxyzptlk** » Sun Jul 16, 2006 5:27 am

Both input clips have the following properties:
File format: NTSC DVD
Video type: MPEG-2 Video, Lower Field First
24 bits, 720x480, 4:3
29.970 frames/sec
Data rate: Variable bit rate (Max 8000 kbps)
Audio type: LPCM Audio
48000 Hz, 16 Bit, Stereo

When I create the new video file in VS10+, I've tried:
1. Same as Project Settings
2. Same as First Video Clip
3. NTSC DVD (4:3)

In all three cases, I got the same result -- a video that works for the first clip and when the second clip is supposed to start, I get a blank or a frozen screen. I repeat the process in VS9 and the resulting video is just fine. I've abandoned VS10+ for now, and wonder if I've wasted my money.

sjj1805 · Post by **sjj1805** » Sun Jul 16, 2006 10:47 am

It is possible one or both of the MPEG files contain minor errors.
Download the Free Trial of either:
Womble or
VideoReDo
You will find these programs contain modules that will inspect and repair errors in the MPEG file. Often these errors are not apparant when simply playing a MPEG file and only reveal themselves during editing or after being authored to DVD.

BrianCee · Post by **BrianCee** » Sun Jul 16, 2006 10:52 am

Do you get the same problem if you interchange the two clips - that is put the first one second and the second first - does it then still play the first and not the second - or is it now the first that does not play.

maddrummer3301 · Post by **maddrummer3301** » Sun Jul 16, 2006 12:34 pm

TDK1044 · Post by **TDK1044** » Sun Jul 16, 2006 2:46 pm

Smart Render will be the problem here. This is part of a posting I made some time ago regarding a test I made with MPEG2 and Smart Render:

I captured just under 15 minutes of 'talking head' footage using the ADS DVD XPRESS DX2 capture device. The capture settings were NTSC DVD MPEG2 720 X 480 with uncompressed LPCM audio. The file captured perfectly and was frame accurate with lip sync. I then opened my template DVD project file which has identical settings to the captured footage and I started placing various sections of the 15 minute clip into the timeline with some crossfades between them and a fade up from black level at the start. My project was 15 minutes and 4 seconds long. Next I went to 'create video file' using the 'same as project properties' setting. I created two video files with the only difference between them being that on one 'perform smart render' was checked and it wasn't checked on the other. The end result was that the file with no smart render checked was frame perfect from the first frame to the last, and the file with smart render checked was seconds out of sync from the start of the file and was unstable playing back the file at the points where the transitions were.

Conclusion: Whatever Ulead may say, Video Studio 10 will not always render an MPEG 2 file stable and in sync if 'smart render' is selected and transitions or multiple files are applied.

mxyzptlk · Post by **mxyzptlk** » Sun Jul 16, 2006 7:54 pm

Thank you all for responding. I want to confirm that SmartRender was indeed the culprit. I tried with and without SmartRender in VS10+. Turned it off and the resulting pieced-together video played fine. Interesting that the resulting file was much larger without SmartRender, and that the rendering took longer. But having a working result was worth it. Final point: When I rendered in VS9 with SmartRender, the resulting video was perfect. So I think that there is still a bug in SmartRender in VS10+ and Ulead should fix it.

TDK1044 · Post by **TDK1044** » Sun Jul 16, 2006 11:11 pm

Smart Render was faulty in all versions of VS up to VS8. Ulead somehow fixed it in VS9 and it seems they broke it again in VS10. Let's hope that if we get a patch for VS10 they'll fix it again.