Sony Vegas -- 720p Framerate issues

F

floz23

Member
Greetings everyone.

My HMC150 came today, and I'm still currently trying to figure out if I like the 720 or 1080 mode the most (PH bitrate, of course.)

Now, 2 observations with sony Vegas (both 8.0c and 8.1). I hardly use 8.0 anymore...

First: I was under the impression that this camcorder could record in NDF mode (non drop frame mode), leading to exact frame rates, like 30.00p, instead of 29.97p. In vegas, I notice that everything is reported in DF mode, even when I look at the "Properties" of the video in Vegas.

Two: in 720p mode... the 30p is incorrectly reported in vegas as 59.97p (60p). I looked through the manual and I couldn't get an exact answer if the file is actually 30p over 60p (or 60i). This leads to funniness, if you manually set the vegas project file to 29.97p, it trys to "resample" to 30p, which makes the video look like crap.

The 720 24p, 720 60p, and all the 1080 modes all work fine (but still are reported as DF frame rates.)

There is a simple workaround for the second issue that I discovered. Right click on your 720 30p file and select properties. Under the video Event tab, select "Disable resample." -OR- you can change the Undersample rate to 0.500 (29.97 fps).

I will finally say that I haven't had vegas crash on me yet when playing with these AVCHD files. Native editing of all of the PH formats is choppy, but very do-able, and if I select the "Good" preview mode, then its very good. I think some people should try switching to Vegas 8.1 and get 8gb of ram. I currently have 4gb, and I hope that by going to 8gb, everything will be even better.

-Adam
 
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NDF has nothing to do with the frame rate. It has to do with how the timecode counts the frames. The 150 shoots at 23.976, 29.97, and 59.94. All video cameras do, except for the uber-expensive professional models like the F900 or VariCam, which have the option of doing exactly 24.00 or 30.00.

NDF numbers each frame sequentially, but leads to reporting the wrong total running time of your footage (i.e., a minute of footage will show timecode of something like 00:59:12 or something). DF doesn't number every frame sequentially, it skips certain frame numbers so that the reported total running time is the same as the actual running time (i.e., 1:00 of footage will show a timecode of 1:00).
 
Floz23, my most heartfelt thanks, you are spot on, trying to cut 720p 30fps Canon TX1 footage on Vegas was driving me mad until I found your post.
 
i gotta bump this. i found this after searching for sooo long and it helped me out immensely. i'm sure it will help someone else too.
 
This is good. My first thread start after buying the HMC was on this very subject. This is the best answer I've heard on how to handle it in Vegas.
 
Adam -

You don't realize how much you just helped me out!! I just spent the last 3 days trying to figure out why my editor was not working correctly because of this..

Thanks!
 
I disable resample on all my footage. I will tell you 9c handles 60p much better than 8.
 
The only time i DON'T set the clip properties in Vegas to disable resample, is when i convert 1080 50i footage to 1080 50p footage for use as supersmooth slowmo. Once the 50p is brought back in then the clips are set to disable resample and the clip velocity set for slowmo. From there i render out to 25p... bingo .. super smooth slowmo as if the original footage was shot in 50fps.

Cheers Rambo
 
Barry_Green said:
NDF has nothing to do with the frame rate. It has to do with how the timecode counts the frames. The 150 shoots at 23.976, 29.97, and 59.94. All video cameras do, except for the uber-expensive professional models like the F900 or VariCam, which have the option of doing exactly 24.00 or 30.00.
Click to expand...

Q Barry, so upon exporting choosing the corresponding 23.97 or 29.97 as the export framerate is the best practice correct? Or my suspicion is we may not even see the difference?
 
Sorry to dig up such an old thread, but I have a problem similar to the one in this thread. Only in my case it is a bit more funky regarding the framerates :)

I just bought a new action camera, the drift HD. Before I owned the drift hd stealth. They should both produce the same video files, but with the new one, I have lots of problems getting the footage into vegas. (version 10 and 11)


The old cam produces 29.97fps 1080p video, mov files. When imported into vegas, they are correctly recognized at that framerate.


The new one should produce the same files, but when imported into vegas, it displays a random framerate for each clip. Sometimes it says 32.354, sometimes, 45.829, 62.357 and so on.


Of course this creates loads of problems with blending frames etc... When I turn off frame blending, video doesn't play back smooth as it is constantly repeating frames, or shows missing frames.


The clips play back fine in any video player though. They are also fine in premiere and after effects, and are recognized there as real 30fps (not 29.97).


What could cause these problems?


Vegas also says audio is 32bit float, which cannot be the case at all.


So in general, something goes wrong during import.


Any help or tips would be greatly appreciated.


Wouter
 
Try using a program called MPEG Streamclip to transcode your file to an intermediate codec before importing to Vegas!

aversis said:
Sorry to dig up such an old thread, but I have a problem similar to the one in this thread. Only in my case it is a bit more funky regarding the framerates :)

I just bought a new action camera, the drift HD. Before I owned the drift hd stealth. They should both produce the same video files, but with the new one, I have lots of problems getting the footage into vegas. (version 10 and 11)


The old cam produces 29.97fps 1080p video, mov files. When imported into vegas, they are correctly recognized at that framerate.


The new one should produce the same files, but when imported into vegas, it displays a random framerate for each clip. Sometimes it says 32.354, sometimes, 45.829, 62.357 and so on.


Of course this creates loads of problems with blending frames etc... When I turn off frame blending, video doesn't play back smooth as it is constantly repeating frames, or shows missing frames.


The clips play back fine in any video player though. They are also fine in premiere and after effects, and are recognized there as real 30fps (not 29.97).


What could cause these problems?


Vegas also says audio is 32bit float, which cannot be the case at all.


So in general, something goes wrong during import.


Any help or tips would be greatly appreciated.


Wouter
Click to expand...
 
Hi, thanks for your reply. But wouldn't that degrade quality a bit, plus such an extra step takes a huge amount of time...

I don't understand why I cannot tell vegas that my clips are not 57.238fps but 30fps. Such a simple option would solve all the issues.
 
Ok I should have first tried the program and then comment on your post :)

I tried it, just used 'save as' command, saved again as mov, it saved in a matter of seconds so it seems it is not recompressing my video or anything. Imported into vegas and hey it now says 30fps :)

I have no idea how this is possible, but this is a life saver for me!

Thanks
 
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