I imported the footage iinto a 50fps project and it works fine. Each frame forward the shot moves. this is in Version 12. IF I change it to 25fps, it still works as expected. But if I set deinterlace method to NONE at 50fps project, then I get the stepping that you are getting. At 25fps project it works fine. so, as I suggested earlier, set your project to 25fps.

I get the same behavior in SVP12. I have one computer that has VP11 which has a different AVC encoder that handled GoPro footage better; I will try it later today and report back.

I think I found the sinner.

I double checked my GoPro and Auto Low Light was on.

I guess this setting has lowered the frame rate as already suggested in a previous post by

fifonik.

But - should I then change my project settings to 25fps?

I have other footage from the same session where the low light settings have not affected the frame rate, and this seems to be true 50fps.

Furthermore, should I adjust some of my project settings in this case? "Deinterlace Method" and "Resample Mode"?

I think I found the sinner.

I double checked my GoPro and Auto Low Light was on.

I guess this setting has lowered the frame rate as already suggested in a previous post by

fifonik.

But - should I then change my project settings to 25fps?

I have other footage from the same session where the low light settings have not affected the frame rate, and this seems to be true 50fps.

Furthermore, should I adjust some of my project settings in this case? "Deinterlace Method" and "Resample Mode"?

It depends on your final delivery format; is it 25fps or 50fps?

My output should be 50fps

Seems your "source" is actually 2nd gen, and was encoded straightaway from 25p, yet wrapped (flagged) 50p without sampling.

This is happening a lot more lately; saw it again just last week.

Try encoding back to native 24p in Handbrake. Might just work.

I think I found the sinner.

I double checked my GoPro and Auto Low Light was on.

I guess this setting has lowered the frame rate as already suggested in a previous post by

fifonik.

Hi musicvid,

You probably didn’t saw my previous post, Auto Low Light was the cause as it lowered my framerate in this shot.

If it works for you, great. This has not been reported before to my knowledge.

There are other GoPro owners here who may try to replicate your observation.

should I adjust some of my project settings in this case? "Deinterlace Method" and "Resample Mode"?

If you are going to render it to 50p and you have other 50p footage in the same project (where you do not have duplicate frames) you should keep project as 50p and adjust media instead.

You must NOT disable Resample in this case.

I suggested a way how to drop duplicates using Vegas (changing "Undersample rate"), however for some reason this does not work for you. I cannot try it here as do not feel comfortable to download 1GB sample just for that (my connection is not very fast and I have monthly limit).

The other way -- using external tools. Avysynth + VirtualDub and rendering into intermediate lossless should do the trick. I would do the drop frames + resampling 50p in Avysynth as this should give better results that resampling in Vegas.

You can also keep everything "as is". You already have 50p project and 50p footage. Yes, frames are duplicated in the footage but... It should work.

With dropping duplicates + resampling (as above or using twixtor) you might have slightly more fluid movements, however it might add resampling artifacts especially on scenes with fast movements.

You must NOT disable Resample in this case.

I don't think that makes any difference. If the GoPro footage is recorded and 50p but with 1/25 shutter speed, the damage is done, not even Twixtor can repair it as there is too much motion blur.

Sure, sure, I heared the same thing here many times already.

"Damage is done so there is no reason to try your best"

Unfortunately, I'm stubborn perfectionist with CDO so I cannot go this way :)

P.S. OP, could you upload smaller sample please?

Sure, sure, I heared the same thing here many times already.

"Damage is done so there is no reason to try your best"

Unfortunately, I'm stubborn perfectionist with CDO so I cannot go this way :)

 

P.S. OP, could you upload smaller sample please?

I can see you haven't seen the larger sample file hence wont comment any further on your reply.

Unfortunately, I'm stubborn perfectionist with CDO so I cannot go this way :)

;?)

You must NOT disable Resample in this case.

I don't think that makes any difference. If the GoPro footage is recorded and 50p but with 1/25 shutter speed, the damage is done, not even Twixtor can repair it as there is too much motion blur.

Playing around with the settings it seems like resampling have no effect at all on this footage.

Which I guess make sense after all, the footage is still 50fps only that every other frame has been dublicated by the camera - so there is nothing to resmaple after all.

Deinterlace Method have been mentioned in some of the prevoius posts. I have only been working with progressive footage and have very little experience with interlaced footage. Will someone please be kind enough to explain what this setting do? .. I guess it have no effect on my progressive footage, is that right?