Distortion after inserted transition - Pro x2 - HF100

[michal_h]

I did not express my question properly (that's my English), so again:

what kind of files do you edit in VS12 (as I understand there are not mts files) ?
How do you achieve them ?

avchd (mts) -> decoding sw (UpShift, ProCoder, Carbon Coder) -> hd mpeg2 -> nice editing in VS12 -> AVCHD output (smart render works perfect)

I can now start to work on Xmas presents for my family

[bankroot]

Thanks Michal,

a lot of converts, so you have to be hurry to finish your work untill Christmas tree will stand at your home

[dalemccl]

As Corel support requested, I have uploaded sample files to their ftp site. I uploaded a clip from my Sony SR-11, and a file created by Pro X2 from that clip (and which shows the transitions problem). I also uploaded a clip from a Canon HF100 that was provided by Efenstor, with a note that Canon users are experiencing this problem too.

Hopefully they can re-create the problem on their PC's, will agree that it is a program bug, and will refer it to the developers for a fix.

When I get a response from Corel, I will post what they said.

I received an e-mail from the gentleman from Corel support who has been handling my problem report about the "jerks" or "blips" caused by transtions between AVCHD clips.

He said he was able to recreate the problem with both clips I sent to him (a clip from my Sony SR-11 and a Canon HF100 clip provided by Efenstor.) He said he has referred the problem to Research and Development for further investigation. He then said, and I quote:

"They will investigate this issue and it might need to be resolved in an update pack release to correct the problem."

[Ken Berry]

Well, it will be good if that happens. Thanks, dalemccl!

michal_h said:

... -> hd mpeg2 -> nice editing in VS12 -> AVCHD output (smart render works perfect)

I don't understand how SmartRender could work at all in this workflow. As you note, you are going from high definition mpeg-2 (HDV) format to AVCHD high def mpeg-4. SmartRender can only work when re-rendering in exactly the same format with the same properties.

[michal_h]

"They will investigate this issue and it might need to be resolved in an update pack release to correct the problem."

great work THANKS

michal_h said:

... -> hd mpeg2 -> nice editing in VS12 -> AVCHD output (smart render works perfect)

I don't understand how SmartRender could work at all in this workflow. As you note, you are going from high definition mpeg-2 (HDV) format to AVCHD high def mpeg-4. SmartRender can only work when re-rendering in exactly the same format with the same properties.

I am sorry I made only short test but if I select output file as AVCHD mpeg optimizer changes it automaticly to mpeg2 format so there is only one encoding in this workflow

[Ken Berry]

Yes, that is logical. But it is wrong to suggest that the conversion is HDV > AVCHD. It is in fact HDV > HDV, and that is the only circumstance in this situation which would allow SmartRender to work...

[pwholzel]

I know folks in this thread are getting stutters when they introduce transitions. I am getting stutters even on straight cuts, using HF100, smart proxy, smart render to AVCHD with VSX2. The stutter usually occurs half a second before and after most straight cuts. I was not getting stutters using VS11.5. I also do not get stutters using the HF100 bundled software, Pixela. Is anyone else having this problem?

[michal_h]

I received an e-mail from the gentleman from Corel support who has been handling my problem report about the "jerks" or "blips" caused by transtions between AVCHD clips.

He said he was able to recreate the problem with both clips I sent to him (a clip from my Sony SR-11 and a Canon HF100 clip provided by Efenstor.) He said he has referred the problem to Research and Development for further investigation. He then said, and I quote:

"They will investigate this issue and it might need to be resolved in an update pack release to correct the problem."

hi dalemccl,
could you pls contact your "gentleman from Corel support" if Corel investigated our issue already and if we can expect some patch in near future?
thanks Michal

[markguitre]

I too am getting random "stutters," "jerks," "blips," after transitions upon burning an AVCHD hybrid disc using X2Pro. My cam is the Canon HF100. The last post on this was over 3 months ago. Anyone heard anything from Corel about a fix?

[sjj1805]

Have you tried this one?
Patch for VS X2

[dalemccl]

I too am getting random "stutters," "jerks," "blips," after transitions upon burning an AVCHD hybrid disc using X2Pro. My cam is the Canon HF100. The last post on this was over 3 months ago. Anyone heard anything from Corel about a fix?

I tried the November patch but it didn't fix the problem (and their list of changes for the patch didn't indicate that it was being fixed with this patch).

When I submitted a problem report about this last fall, the Corel support person was able to recreate the problem and said he was sending it on to the development team for further analysis. I e-mailed him about 3 weeks ago asking about the status, but did not receive a reply.

I stopped using transitions until this is fixed, but I also get the stutter when using a title over the video. Examining the area around the stutter frame-by-frame shows that the video actually backs up one frame at the end of the transition or title, then goes forward again. So you get two frames repeated.

[JohnDale]

Hi
I have the SR12 and I cannot see any "blips or distortions" after inserting titles or after straight cuts. Most times I insert a transition I don't have any problems either. Only after one transition I can see an occasional "blip" but even editing standard def DV I have occasionally noticed these "blips".. My tests have been recorded to a normal DVD disc as AVCHD and played on a PS3.

[dalemccl]

Hi
I have the SR12 and I cannot see any "blips or distortions" after inserting titles or after straight cuts. Most times I insert a transition I don't have any problems either. Only after one transition I can see an occasional "blip" but even editing standard def DV I have occasionally noticed these "blips".. My tests have been recorded to a normal DVD disc as AVCHD and played on a PS3.

It could be a system difference from my system (hardware or software) that you aren't getting the problem. But the blips are only noticeable when there is movement in the scene - either the camera panning or the subject moving. A good example is a moving car or truck in the scene that is moving from left to right. Because the blip is caused by the video actually backing up one frame at the end of the transition, and then proceeding forward again, two frames are repeated and the blip is quite noticeable. The car/truck appears to go backwards for one frame and then go forwards again. Using the advance-one-frame button in the VS transport controls you can see the car/truck jump backwards. If the scene is more static then the repeated frames aren't noticeable.

It is also not very noticeable if the camera is moving around a little because it was hand-held and the scene is slightly shaky anyway. With the car/truck scenario I had the camera on a tripod so the jump backwards really stood out. That is the video clip I submitted to Corel where they duplicated the problem and sent it to Development last fall.

Are you not getting the blips even when there is considerable movement in the scene?

[JohnDale]

Not much movement in those clips, but I just went and done some fast pans at the park and filmed a few cars driving past. I will try to edit these tonight and let you know the results.
Just to clarify, the distortion actually appear after the project is rendered and played back with VS or a media player is this correct. Or does the project have to burnt to disc

[dalemccl]

Just to clarify, the distortion actually appear after the project is rendered and played back with VS or a media player is this correct. Or does the project have to burnt to disc

For me, it appears both in rendered AVCHD files and in burned hybrid AVCHD discs, although I usually create the disc from the rendered file so it would naturally appear in the disc. I'm not sure what happens if a disc is burned from the project timeline. I think I have done that at some time in the past and the blip did appear, but I can't say for sure.