Problem when split video is joined...

20thCenturyMark wrote on 2/15/2010, 5:03 PM
hello,
I am new to Vegas MS 9. When I split video clips and join them to other clips, what happens is the clips overlap by a frame or two. I have snap enabled. It doesn't show this in the preview window but when I render and burn to DVD and watch it is very noticable. Is there a snap setting I am missing or is there a trick to doing this properly? Any help? Thanks.

Comments

david_f_knight wrote on 2/15/2010, 6:09 PM
I haven't experienced this, so take it for what it's worth....

Are you rendering your video at a different frame rate than your source clips were photographed at or are you slowing or speeding the playback rate of your source video? It sounds like there may be frame to frame interpolation going on to cause the short overlap you are observing. As for your preview window, have you set it to "Best" quality? If not, then the frame to frame interpolation is probably not performed within the preview window to speed up its processing. Try setting it to "Best."
OhMyGosh wrote on 2/15/2010, 7:36 PM
Confused as to what you are seeing when you watch the DVD. Are you seeing cross fading or black? Try to enable snapping again by clicking the icon or pressing F8. Let us know. Cin
Sargan wrote on 2/16/2010, 4:48 AM
a related Q to this ... when you add a second clip at end of a clip .. for example straight add .. no overlap.
Can you 'lock' these together.
Used when you snip out a section.

I find it annoying that you might make a change elsewhere and the joins then all joins change when you drag one clip as the next one is not 'locked to it'

OhMyGosh wrote on 2/16/2010, 6:11 AM
You can always 'Group' events together by selecting all of them that you need to by Shift or Ctrl clicking them (including their audio), and then hit the letter 'G' on the keyboard, or 'U' to ungroup them. Also, it sounds like you may need to familarize yourself with the 'Auto-Ripple' feature as it can be a huge help and time saver when editting. Let us know. Cin
ShawnGN wrote on 2/16/2010, 7:10 AM
I am having the same problem as the TC. Very quick annoying cross-fades between scenes despite carefully snapping them cleanly together. Help us!
OhMyGosh wrote on 2/16/2010, 7:35 AM
When all else fails, turn off the 'Automatic Crossfade' icon on the top icon bar (Ctrl + Shift + X). Let us know. Cin
david_f_knight wrote on 2/16/2010, 9:25 AM
To ShawnGN:
Did you try the advice I gave previously (the second post in this thread)? Is there a frame rate mismatch? What is your preview quality setting?
FrigidNDEditing wrote on 2/16/2010, 10:09 AM
Could be a frame mis-match with resample mode kicking in? - just a thought.

An example of what you're seeing would be helpful.

Dave
abelenky wrote on 2/16/2010, 10:40 AM
Is it possible that this is due to interlaced video?
At the transition, you would see the Upper-Field of the first clip interlaced with the Lower-field of the second clip.

It would only last a single frame (30th of second), or maybe just a single field (60th of second), but it might be what you're describing.

Try rendering in a progressive/non-interlaced video, and see if the problem persists.
musicvid10 wrote on 2/16/2010, 8:55 PM
I don't recommend turning off Automatic Crossfades. That would hide the overlaps from view, not prevent them.

Is Quantize to Frames turned On?
OhMyGosh wrote on 2/16/2010, 10:32 PM
"I don't recommend turning off Automatic Crossfades." Really??? Well I do. In an effort to find what is causing this behavior, it makes perfect sense to give it a try and see what happens.
"That would hide the overlaps from view, not prevent them." Really??? The problem is a cross fade, and yes it would prevent that. Cin

20thCenturyMark wrote on 2/17/2010, 5:58 AM
OK, I have tried everything posted here with no luck. Same results. Tried Quantize on and off, no difference. This is very frustrating!
OhMyGosh wrote on 2/17/2010, 7:36 AM
Ok, last guess on this subject. First, you haven't provided many answers to questions that have been asked of you; mixed media, native format, output format, what are you seeing visually, etc. If you zoom in to the time line far enough to see each frame individually, and you don't see the cross fade/overlap lines, there is no overlap or cross fade....Period. The last thing I could think of with the limited info provided is if you are using HD footage, Vegas has a known bug of capturing the first couple of frames of the following clip which appear on the end of the previous clip. You need to hold down the 'Alt' and use the arrow keys which will let you view your clips one frame at a time, and see if this or anything else shows up. Please let us know. Cin
musicvid10 wrote on 2/17/2010, 7:53 AM

Well I do.
Sorry, as I said, that just hides the overlaps by overlaying, giving you NO ability to see them on the timeline.

And no, the problem in not a crossfade, it is an overlap.

I think a little reading and experimentation will help you to understand the automatic crossfades function.
musicvid10 wrote on 2/17/2010, 7:55 AM
Tried Quantize on and off, no difference.

After you turn Quantize to frames on, you must nudge and/or size each event to snap to frame boundaries.
Once that is done, and Snapping is on, the event edges will butt exactly at frame boundaries.
Takes a little getting used to, and zooming in on the timeline will help to see exactly what is going on.
OhMyGosh wrote on 2/17/2010, 8:18 AM
'I think a little reading and experimentation will help you to understand the automatic crossfades function.' I will give you the benefit of the doubt and hope that's not what you really meant, as that would make you a rather large jerk. Cin
20thCenturyMark wrote on 2/17/2010, 9:15 AM
I am using two MPEG-2 files. Both taken from separet dvds. All the video properties are the same. I have zoomed in as far as I can on the timeline, moved one frame at a time to make exact splits on ether side, then snapped them together. I have tried change the project properties to match the video I am using, and other templates as well with the same results.
musicvid10 wrote on 2/17/2010, 9:19 AM

I will give you the benefit of the doubt and hope that's not what you really meant, as that would make you a rather large jerk. Cin

Yes, I meant what I said, but not in the way that you took it. Although I understand we all get defensive at times, making this emotional and personal by resorting to name-calling is inappropriate.

IIRC, I recently stated in another post to you that I was wrong and that you were right about another timeline procedure. I offer that as an example of an alternate approach to discussion over what should remain a dispassionate issue.
musicvid10 wrote on 2/17/2010, 9:30 AM
I am using two MPEG-2 files. Both taken from separet dvds.

Imported DVD material can be problematic on the timeline. In addition to the advice above, try trimming the last frame of a clip back to the nearest frame boundary before bringing the next clip into place. Are the video and audio the same length, or is one longer than the other?

That being said, for what you are trying to do, I have found VideoReDo Plus much better suited for splitting, joining, and muxing mpeg-2 segments from dvd. Download the trial and see how it works for you.
OhMyGosh wrote on 2/17/2010, 9:36 AM
'making this emotional and personal by resorting to name-calling is inappropriate.' Agreed, as is contradicting and belittling other senior members. I have been on this board for 'only' three years, but I have been using VMS long before Sony ever aquired it and believe I have a pretty good understanding of it's ins and outs. Having said that, there is hardly a day that goes by that I don't learn more. That's why I enjoy coming here.
' I recently stated in another post to you that I was wrong and that you were right' I was hardly trying to prove you wrong or me right, that's a losing game I don't play. We were both trying to provide help based on our knowledge, experience, and best guess, that's all. Ultimately, we are all here to help and learn. Cin
musicvid10 wrote on 2/17/2010, 9:58 AM
Agreed, as is contradicting and belittling other senior members.
I couldn't have said that one better. When I re-read my first post and your reply, the truth of that statement is apparent to me.

We were both trying to provide help based on our knowledge, experience, and best guess, that's all. Ultimately, we are all here to help and learn. Cin
Again, I couldn't agree more. And, to me, being able to say "I don't know" and "I will try to find out for you" and even "I made a mistake" are the hallmarks of true professionals and teachers alike. And I certainly agree that you have acquired a lot of knowledge and insight about the program in a relatively short time on these forums. Congratulations.



ShawnGN wrote on 2/17/2010, 10:35 AM
I've set my preview quality to Best, how do I find out about any framerate issues? Also as a side note, if I take my rendered video and go through all the scene transitions and remove the unwanted cross-fades and render it again (a long and tedious process) it DOES get rid of them. When I first tried this method I was concerned I was wasting my time and new cross-fades would be created at the new splits in the video. Also, I can never seem to recreate the problem intentionally (as I've tried by putting a dozen or so 3 second clips together) Its a strange problem, and unfortunately I don't know a lot about the more advanced options of the program, so I'm doing my best to explain it. Sorry if I seem vague.
OhMyGosh wrote on 2/17/2010, 10:37 AM
Thank you MusicVid. Much appreciated. Now lets see if we can figure out what the heck is going on with 20thCenturyMark! :) Cin
Terry Esslinger wrote on 2/17/2010, 10:40 AM
Maybe he/she could post a frame grab of a zoomed in time line?