New Info re: AVCHD transition "blips"

Black Lab · Post by **Black Lab** » Mon Nov 09, 2009 3:31 pm

Can anyone think of a better work flow than what I outlined?

Did you try Corel's suggestion of making on single clip?

As you say, rendering each clip would be very tedious. But are you going to put a transition between each and every clip? If not, the single clip variety might work. Try cutting the one large clip only where transitions are needed, then add the transition. Is the blip still there?

dalemccl · Post by **dalemccl** » Mon Nov 09, 2009 9:08 pm

Black Lab wrote: Did you try Corel's suggestion of making on single clip?

As you say, rendering each clip would be very tedious. But are you going to put a transition between each and every clip? If not, the single clip variety might work. Try cutting the one large clip only where transitions are needed, then add the transition. Is the blip still there?

I did a brief test with 3 clips today using the work-around. The blips did not occur. I tested using these steps.

1. Place original camcorder AVCHD clips in the time line.
2. "Share/Create Video File/AVCHD" with quality set to 100% and bit rate to 18,000. Smart render off.
3. Place the resulting file in the time line of new project.
4. Cut the clip where I want to place transitions ( a little tedious to find the exact frame for cutting). Add the transitions.
5. Share/Create Video File/AVCHD with quality set to 100% and bit rate to 18,000.

The file output by step 5 did not have blips. However, as expected, it was of lower quality than the original clips. It lost that quality in step 2. The original clips' bit rate was 15,000-17,000 bps. The file created in step 2 had a bit rate of 9,000 - 12,000. The output of step 5 had the same 9,000 - 12,000, so that second render did not lower the bit rate beyond what step 2 did.

The lower bit rate results in obvious lower video quality when viewed on my 52" HDTV. It is not as noticeable on my 19" PC monitor, except during pans, where the lower bit rate can result in some artifacts that were not present in the original clips.

The work-around may be a solution for some, but I prefer to preserve the high bit rate and quality by not using transitions and burning the project directly to disc (AVCHD on a standard DVD disc).

michal_h · Post by **michal_h** » Tue Nov 10, 2009 10:58 am

dalemccl wrote:I prefer to preserve the high bit rate and quality by not using transitions and burning the project directly to disc (AVCHD on a standard DVD disc).

Thaks for testing it
I prefer the same as you

oRBIT2002 · Post by **oRBIT2002** » Wed Nov 11, 2009 9:02 am

I'll refuse to follow Corels ideas about recoding the entire clip before editing. Perhaps the quality loss is barely visible but in the end, I want my movies to have the best quality possible.
Lets hope they come out with a fix instead of complaining that all of our camcorders aren't compatible.

dalemccl · Post by **dalemccl** » Wed Nov 11, 2009 5:55 pm

After receiving Corel's e-mail explaining the work-around, I updated my problem report to say that while the work-around does seem to eliminate the blips, the re-coding to an AVCHD file degrades the video quality and is not a good solution for me, and probably not for many other users.

They replied to that by saying they would pass my comment on to the Development Team, and if a patch is made, it would appear on the website. So there was no promise of a patch, but they didn't say there won't be one.

Xyzzy2 · Post by **Xyzzy2** » Wed Nov 11, 2009 7:10 pm

Xyzzy2 wrote:
Xyzzy2 wrote:BTW, anyone has seen a list of VSX2 supported camcorders??? The closest statement I could find is "all new AVCHD camcorders".
I've submitted a support ticket with a simple question about it. We'll see.

And here's the answer. The meaning is "we could not make VS work flawlessly with any camcorder's output, still we decided that the truth is flexible enough we could claim AVCHD support."

Please be informed that we are not in the position to recommend or endorse any hardware or peripheral devices. In relation to this, we cannot answer for the features, capabilities or even limitations of specific brands or models for hardware devices. Please refer to the official manufacturer's official website for details on your wanted device. Or, search on internet forums (example: http://phpbb.ulead.com.tw/EN/) that discusses user's feedbacks on the said device.

sjj1805 · Post by **sjj1805** » Thu Nov 12, 2009 3:23 am

Please be informed that we are not in the position to recommend or endorse any hardware or peripheral devices. In relation to this, we cannot answer for the features, capabilities or even limitations of specific brands or models for hardware devices. Please refer to the official manufacturer's official website for details on your wanted device. Or, search on internet forums (example: http://phpbb.ulead.com.tw/EN/) that discusses user's feedbacks on the said device.

Which of course will lead to further frustration!
Our web address is
http://forum.corel.com/EN/index.php

Using the old one

http://phpbb.ulead.com.tw/EN/

will create problems when using this Web Board - mostly staying logged in - using the old address will keep asking you to log in (again... and again ... and again... and ... well you get the drift.)

Van Rouge · Post by **Van Rouge** » Mon Nov 16, 2009 2:19 pm

I had an email from Corel to say that they were holding a sale soon. Does this mean that they are clearing their stock before bringing out new versions? I would not buy Video Studio again unless I knew it could handle HD video.
Ray Morris

Black Lab · Post by **Black Lab** » Mon Nov 16, 2009 2:36 pm

Not necessarily. I get an email about once a month announcing sales for various Corel products.

Klaas · Post by **Klaas** » Sun Nov 22, 2009 11:10 pm

Now and than I check this topic to see if there is any progress. I must say I really appreciate all the time you all invest in this. Trying things, etc. I wish Corel would do the same.

Van Rouge · Post by **Van Rouge** » Sun Dec 20, 2009 2:23 pm

I see that this week Amazon (UK) are selling VideoStudio X2 Pro Ultimate for 56% off with free delivery at £34.97

Also the Magix program which renders HD without glitches.

Ray Morris

michal_h · Post by **michal_h** » Tue Jan 12, 2010 11:32 am

did you try edius neo 2.5 (AVCHD booster)? It handles avchd excellently, smooth real time editing, no transitions bugs, probably without smart rendering but rendered file is very nice (i can not notice any deterioration)

Van Rouge · Post by **Van Rouge** » Fri Jan 15, 2010 11:56 am

I have not heard of edius neo 2.5. I save my videos onto Bluray as my holiday films can be quite long!

I now use Magix for editing and rendering and only use VS for creating Bluray discs.

Ray Morris

Post by **Ron P.** » Fri Jan 15, 2010 1:44 pm

Van Rouge wrote:I have not heard of edius neo 2.5. I save my videos onto Bluray as my holiday films can be quite long!

I now use Magix for editing and rendering and only use VS for creating Bluray discs.

Ray Morris

Edius Neo 2 Booster by Grassvalley..

Van Rouge · Post by **Van Rouge** » Sat Jan 16, 2010 12:57 pm

Thanks for the link. I have spent so much time just trying to get a simple holiday fillm from camera to disc that I am having a rest from it all. My last film has worked Ok so I will stick with that for now!

Ray Morris