Drop outs with Ulead AVCHD Codec

[mitchell65]

Don't do this in the Ulead Common directory change if you have installed X3. X3 appears to change the MPEG file to much newer version... Al

The reason for changing the files is to avoid having to update to
X3 just to cure this "blip" bug. If you have X3 installed the blip bug is cured anyway so there would be no point nor any need to change the files.

[Xyzzy2]

Don't do this in the Ulead Common directory change if you have installed X3. X3 appears to change the MPEG file to much newer version... Al

BTW, replacing both H264VDec.dll in X2 with the same file from X3 trial gives no improvement

[alpine]

No, it's the same problem, out of sequence frames at entry points of smart rendering transitions.

Sorry I thought you said the file with the transition would hang in your media player. The blips we all get or got were "shudders" just after a transition. It didn'tmake the player hang.

My apologies, it's some months since I looked at this in detail, the fault is indeed at the end of the transition not the beginning. It's where VS is switching back into smart rendering. At this point there is skip back of a frame or 2 then a couple of frames OK,and then a couple of frames later, a skip forward. This throws my media player and causes it to hang, even though this does not happen on the same file played on a PC, where there is just a minor judder visible. I very rarely write disks these days.
These errors are still visible after updating the DLL discussed.

[Trevor Andrew]

You could try Batch Convert
Maybe an explanation is in order

The release of X3 prompted John to render his HD project to find that X3 had cured the blip problem.
I have not used HD but became interested in what the blip looked like so I created a project using some sample HD to produce the faulty video.
Surprised to find it looked worse than I had imagined, with pixels floating around the transition area. (alpine---not really what your seeing )

Taking it a little further I found I could create a good video using Batch Convert.
I e-mailed John and posted to the forum with my findings
http://forum.corel.com/EN/viewtopic.php?t=36972

John confirmed that Batch Convert did cure his video blips.

Remembering Philip_I
I ran a few tests using his method of replacing the H264VDec.dll

This of course worked with the benefit of recreating the video to order, with a blip or without, No matter it worked.
Again I informed John, who would of course confirm Philip¡¥s Dll cloning strategy.

I was a little unsure whether the blips I saw were the same as Johns, with this in mind I intended to send him an image. But now I find I am unable to create the videos containing the faults.
Yes I had installed X3.

I tried to replace the H264VDec.dll to there originals but still failed to create the faulty video, I can only assume that the dll¡¦s may not be the only files associated with this problem.

The only way I can reproduce this problem is to do a clean install, to be honest I don¡¦t think that is worth the effort.

So if you have installed X3 then your X2 should work
If you haven¡¦t installed X3, just do a bit of H264VDec.dll cloning

And then there¡¦s the batch convert to explore.

So Xyzzy2 and alpine it does seem that you have a different problem to the one I have experienced.

[Xyzzy2]

Here's a 8.45MB MPEG. Watch just before and after transition.

http://www.mediafire.com/file/hm143zvw2u1/blips.mpg

[mitchell65]

Here's a 8.45MB MPEG. Watch just before and after transition.

http://www.mediafire.com/file/hm143zvw2u1/blips.mpg

Just ran your video clip. Have to say that the cross panning was so fast and jerky that it was difficult to tell whether there was a blip or not. You didn't say if this was produced using VS x2 or x3?

[philip_l]

Hi

Glad this tip is helping some.

Just to reiterate my issue was with drop outs and tearing after exporting AVCHD from the time line, always effecting the same clips in exactly the same way and wasn't related to any transitions or editing.

Swapping the DLL solved the problem completely, however the blip issue still remains even after installing X3 to get updated DLLs, in my case anyway.

With regard to blips I think it is possible to edit AVCHD and export it and find you get lucky and there are no blips with X2, probably due to where you happen to pick the edit point, i.e. where in the group of pictures, and this has happened a couple of times to me where I think it is fixed only to find it isn't. Also pans can be juddery on the PC due to refresh rate mismatch, especially PAL footage on 60Hz DVI monitors, so that can hide the problem sometimes.

I think everyone having the issue should raise a complaint to Corel, it is obvious they have fix for this now as we know from X3, and this should be made available as a patch for X2, them not doing so is pretty disgusting and the X2 software isn't fit for the purpose of editing HD footage in my view.

Regards

Phil

[mitchell65]

[quote="philip_I]Also pans can be juddery on the PC due to refresh rate mismatch, especially PAL footage on 60Hz DVI monitors, so that can hide the problem sometimes.
[/quote]
But I used the downloaded clip to create a DVD in x2 and played it on my HD TV!

[Xyzzy2]

Just ran your video clip. Have to say that the cross panning was so fast and jerky that it was difficult to tell whether there was a blip or not. You didn't say if this was produced using VS x2 or x3?

Thanks to fast panning, repeated frames are evident and also easy to spot when inspecting frame by frame.
This was created in X2 from AVCHD clips.

[Trevor Andrew]

Hi Xyzzy2

Just ran your video sample and yes I can see the blip.
About frame 02-19/20/21 entering the transition and 04-19/20/21 leaving...
These frames appear to play backwards producing the blip.

Frame 71 and frame 121 are either extra frames that shouldn¡¦t be there or they are in the wrong order. I haven¡¦t made my mind up as yet, although I doubt if that matters.

Can you check the project length against the rendered video length.
They should match.

Well the video is 7seconds and 14 frames

Xyzzy2¡K..As the project is only short can you provide the project VSP and the video files.
I would then be able to render the video on my pc to see if I can produce the blip.

[Xyzzy2]

http://www.mediafire.com/file/ormzkmgozty/blip-test.zip

X2 smart packaged project.

P.S. This is not the exact project that was used to create the blip video I posted earlier, but contains the same source clips and produces identical problems on my X2.

[Trevor Andrew]

Thanks Xyzzy2

downloading the zip now, but will be tomorrow before i can test

[Trevor Andrew]

Hi Xyzzy2

That renders ok, no blips.

Can you try rendering with Smart Render disabled.
If it works at least you will have a work a round.

Dirext X
Install the Latest from the link at the top of this forum.
Its a three part process, download the file
Extract the files content to a new folder
Run the DXSETUP.exe to install

Worth doing again even if you have done previously.

If that doesn¡¦t improve things then I would suggest a complete clean install of all your ulead/corel software.

I have a friend that is using X2, no X3 and no dll cloning.
I will ask him to render your vsp.

I am almost certain that he does not see the blip problem.

[mitchell65]

I have had another closer look at the original MPEG download and can indeed see the blips both sides of the transition. I have downloaded the VSP, put it straight into VS x2 (with the DLL cloned) rendered straight to Blu-Ray folders via Create disk option. Played back and no blips at all! So DLL cloning works for me!

[Xyzzy2]

That was with the August 2009 DirectX. Reinstalling it doesn't change situation.
Smart render has nothing to do, as this was rendering AVCHD to MPEG2. Rendering to AVCHD creates the same blip.
BTW, is SmartRendering disabled by clicking Cancel in MPEG Optimizer dialog?