Mercalli loses analysis of multiple clips from the same file

[Matt8890]

Hi I am running windows 10 with Videostudio X10 and using the Mercalli 2.0 plugin

I have a number of clips, where multiple clips are made from the same GoPro file
In this case Mercalli will analyse the first clip successfully. When I analyse the second clip from the same GoPro file that is successful also

When I return the first of the clips in the same GoPro file, I get the message "The video analysis must be executed again". It seems like it loses or overwrites the information

This happens whether I take a copy of the analysed clip and change the duration or the start and end point

It also happens if I split the clip into two and run the analyses across both

I've read the forums and in this instance I can fix the problem by making a copy of the clip in explorer with a different name and inserting it the timeline, treating as its own source file

However I have hundreds of these and that is no feasible, is this a known bug with a workaround or am I operating the effect incorrectly

Thanks for your help
Matt

[lata]

Hi Matt

Yes the error message “The video analysis must be executed again” has been raised before.

It does appear that our project properties must match our video files properties, especially the frame rate.
So if your video is using say 50P and the project is set for 25 fps then there may be a problem.

Some other posts regarding Mercalli, doing a search of the forum may find other posts.

http://forum.corel.com/EN/viewtopic.php ... li#p346384

http://forum.corel.com/EN/viewtopic.php ... 67#p289167

http://forum.corel.com/EN/viewtopic.php ... li#p343580

So check your video properties, right click a clip and choose properties, what are they.
Then Alt + Enter will open Project Properties, what is in the properties window?

[tletter]

When I return the first of the clips in the same GoPro file, I get the message "The video analysis must be executed again". It seems like it loses or overwrites the information

I've encountered this problem if I split a clip; add the Mercalli filter to one of the split parts; and then copy and paste the filter to the other split parts. Subsequently running the Mercalli analysis on all parts results in the "The video analysis must be executed again" message. To resolve this issue you must remove all the Mercalli filters from each clips and then add the Mercalli filter separately to each clip. If you do that, the Mercalli filter works fine.

In short to avoid this issue, don't copy and paste the Mercalli filter to different clips rather add it separately. The other filters that I've used don't experience this issue.

I've read the forums and in this instance I can fix the problem by making a copy of the clip in explorer with a different name and inserting it the timeline, treating as its own source file

You don't need to use this kludge.

[lata]

Hi
I ran a few tests using Mercalli

1 / Added a MTS video to timeline and matched project properties 1920 x 1080 x 25fps
Applied Mercalli FX filter, everything ok
I now cut my video clip using the scissors
Mercalli now needs to be applied to the separate clips.
Undo the cut and Mercalli is ok

2 / changed project properties to use 50fps
Applied Mercalli, seemed to take longer to do, although I did not time the process, completed ok
Cut clip, again need to apply Mercalli again as above……

3 / Cut video into separate (5) clips using scissors
Applied Mercalli to first two clips, no problems
Used Copy Paste Attributes to next clip, need to scan Mercalli, but to be expected, scan ok.
Now previous clip ( clip 2) requires a rescan by Mercalli.
Did that as ok
However following clip now requires Mercalli scan…

Conclusion – we cannot use Copy and Paste Attributes for Mercalli filter.
We should cut our clips then apply Mercalli to each clip.
We should not cut or reduce the clips duration.

I am sure there will be other options that will or not work when applying the Mercalli filter.
Hmmm

[tletter]

Conclusion – we cannot use Copy and Paste Attributes for Mercalli filter.

Yes - see my post above.

We should not cut or reduce the clips duration.

In my experience, we can cut or/and reduce clip duration whilst using Mercalli as long as we don't copy and paste the Mercalli filter to different clips.

[BikerDave1]

Being a newbie and just getting it up and running yesterday, I ran into the same predicament IF I cut the original clip (to get rid of some dreadful completely unusable tripod shake) then having two workable clips that Mercalli could actually work with.

My solution to handle this predicament was to:

A. Drag the second cut clip to the second video track (the one right below the first)
B. Making sure it did not overlap the first one (just in case but probably unnecessary)
C. Applied the Mercalli filter with the settings I wanted to the first clip
D. 'Scan to analyze'
E. Repeat C & D to the second clip
F. Dragged the clip from the second video track back next to the clip on the first video track without any gap so it looked as I wanted it.

Mercalli liked that solution and no more message about having to re-analyze each part of the clip over-and-over infinitum! I will be working through other tests but this will be an easy workaround to a very time-consuming problem.

[tletter]

Mercalli liked that solution

As mentioned I use Mercalli routinely and there is no requirement to go through the multiple steps in your solution to avoid "re-analyze each part of the clip over-and-over infinitum". The only requirement is to apply the Mercalli filter separately to each fragment of the same source clip, i.e. don't copy attributes containing Mercalli and apply them to fragments of the same source clip.

[BikerDave1]

tletter thanks for the reply to my post. It includes common sense and practical steps to remedy the problem clip(s). While I don’t disagree with what you said it was the first method I used and it failed much to my disappointment.

Here’s the story: After trying a few other steps i.e. using the Mercalli as a single effect, pulled the 4K clip in as a lower-res proxy, using different stabilizing settings, and even grouping/non-grouping without success I decided to start with a clean slate as I had used the system for other NLE video editing software packages before VS and thought perhaps that was causing some of the product failure. After a fresh install of Windows with full updates on the OS and video card I reinstalled VS hoping Mercalli V2 would work as expected - as your reply indicates how this should be done. It still failed the exact same way and no change whatsoever! So I had to think out of the box and after scouring all the various search pages on the forum and internet including opening a ticket on proDAD GmbH’s support page I came up with my steps. This came as a thought as I saw an Adobe User using the same plug-in saying Mercalli V2 has difficulty keeping the settings intact on cut clips on the same timeline.

As a follow-up with proDAD, before Uwe Wenz - the Customer Support Manager - could get back to me I had that step-by-step solution. But his suggestions read like a FAQ e.g. use V2 without other effects, export the stabilized video then importing it back in to use other effects. And in a different email he sent me he said to use the same format and fps, use no other effects or transitions in the timeline for the stabilized clip/video, and also use the correct project setting. All of his suggestions were tried already and with chagrin (spent hours and hours trying to solve this) without success. So I did send him my steps and he thanked me for it anyways. That was all I expected as my issue may be unusual and unique but it works!

[lata]

Hi Guys

Can you check that your project properties match your video files properties, especially the frame rate.
If your video uses 50p / 60p and your project properties are set differently (25 / 30) then you may/will have to rescan again.
Once you have applied Mercalli, trimming the clip will require a re-scan, although I assume you realise that.

But please check your frame rates match.

Its a pity Save Trimmed Video is not available after applying Mercalli?

[BikerDave1]

Hi Trevor,

I have a Panasonic FZ-300 Bridge Camera that shoots in 4K UHD format. I always set it to 3840x2160 raw (~94000kbps bitrate) with a FR of 29.97 and mp4 format. I import it as-is and the Project properties are as-is too. They match and I do not change the FR anywhere in Edit or in Share modes.

The problem I have is that the V2 plug-in only happens with cut clips using the original imported video. I never copy the attributes from one part of the clip to another yet I do keep the settings the same for both parts. In testing I tried the default settings, at first, as well as experimenting with other/stronger stabilizing settings - no change.

FYI: I also keep it in mp4 format on the Share (render-side) but have tested in a variety of bitrates (n/a for the Mercalli V2 issue in Edit mode) for testing rendering speed/quality review. As a note, one time the first clip did not have the re-analyze message in Preview in Edit mode but after render in Share mode it added the message to it. It may have been a refresh thing as it only happened once.

[lata]

Hi

I know that if I change the frame rate to be different to the video files rate then Mercalli throws a wobbly, also cutting the clip after applying Mercalli, needs rescanning.

The data rate for 3840 x 2160 template has a max of 65000kbps, that is we can only create a template to 65000kbps and no higher.
I wonder if the 960000kbps has something to do with the problems?

Can you provide a sample of your video so we can have a play around, you will have to upload to a sharing site, Google Drive, DropBox, One Drive etc.

Oh….As a double check, can you view the Project Properties to make sure that the program has set them correctly matching the video files properties.

[BikerDave1]

Hello,

I have uploaded the original file (it is a video of the MOON) for most of the testing to my Google Drive account. It is clean and requires no password. I'll leave it up for several weeks as its the only file I have on this account. Here is the link: https://drive.google.com/file/d/0B3x_Wp ... sp=sharing

While it is only a bit over a minute long it is over a gig in size! Not for the faint of heart if you are downloading it. To save you some headache with the really bad tripod shake cut the clip at 26 seconds and again at 1:01 minutes. Delete the center clip and work with the beg + end clips.

I did double-check the Properties and they do match.

[tletter]

cut the clip at 26 seconds and again at 1:01 minutes. Delete the center clip and work with the beg + end clips.

OK I did this and applied Mercalli and rendered it with the following properties:

• MPEG-4 Files
• 24 bits, 3840 x 2160, 29.97 fps
• Frame-based
• H.264 High Profile Video: 105600 Kbps, 16:9
• 48000 Hz, 16 Bit, Stereo
• MPEG AAC Audio: 128 Kbps

I've posted the rendered video on YouTube as https://youtu.be/8gNkTPVpyZw (I'll delete this video in a week). As you can see, there is no problem cleaning up your source video and applying Mercalli to it. Again the requirements are to apply the Mercalli filter separately to each fragment of the source clip and to match the rendered output to the source clip.

[lata]

BikerDave

I am not having any problems in applying Mercalli to that video file.

Just thinking out loud here…..

When you apply Mercalli do you then save the project?
Otherwise after applying Mercalli drag the clip to the library as a copy, that should retain all the edits you have applied, including Mercalli.

If you add the clip to the timeline, apply Mercalli, then close without saving the effect will be lost.
Start a new project and insert the same file we will have to apply Mercalli again.

If your files are on an external drive you may have re-link issues and may affect Mercalli

As you say the clip does have quite a lot of shakes but Mercalli does seem to do a good job considering, after applying Mercalli we cannot cut the clip to remove the bad parts, that will require a re-scan on all separate clips.

[BikerDave1]

Hummm......I appreciate the test and the conclusion but it doesn't shed any new light on what is going on. No need to recap what I've already said. But to answer both lata and tletter's message: YES I've applied the V2 to each clip independently of one another - saving it each time and also making sure no other effects or transitions or any other variables introduced into the equation. And all the files and project info is internal and not applicable to external drives either. But my steps still work for me easily and simply so until then.....its an anomaly indeed!

The only thing that could be weird (but apparently doesn't make any difference) is that VideoStudio insists on installing to the 32-bit folder and not the 64-bit folder. This happened before and after the fresh Windows installation. After a thorough review it is running 64-bit. That includes looking at the Task Manager properities and the registry entries and of course the info in the program About window.