3x2video

frodo · Thu Jun 26, 2014 12:26 am

Hi!
I still keep trying and investigating 360video and want to use the Pano2VR player for it. As shown in the video tutorial all frames have to be transformed into 3x2video output. After doing so, the cubefaces are kind of "stretched" at the seams, which later in the player make the objects an curve effect. I also tried to use the 3x2 no overlap output, but this didn´t work because in this case it cuts some pixels a the seams of each cubeface. The size I use for each fame is the highest I could 4032x2688 having in mind the indications from the tutorial, that the image size should be divisible by 16 and each cubeface having an equal number of pixels wide. Am I missing something or did I have overseen some rules or is it something you have to live with?
Thanks, Regards!

JimWatters · Thu Jun 26, 2014 7:41 pm

Without seeing the result it is hard to tell. I take the cropped image is a portion of the flat 3x2 video.
How does it look interactive?

frodo · Fri Jun 27, 2014 4:07 am

Hi Jim!
Thanks for your reply. Tomorrow I will upload the video. The image shown is part of a frame from that video or betterpart of an image used to create that movie. I still don't know if something in my settings or workflow is wrong. I mean maybe the size of the frames is wrong or the one of the final mp4. In the tutorial Karyn mentions something about the size of the final movie. Despite that I did not have any issue in publishing a movie with a size of 4032x2688.
Regards!

frodo · Fri Jun 27, 2014 4:52 pm

Hi!
Here are the links:

This one created from an image sequence that was created by transforming panoramas with the 3x2 no overlap output.
http://www.imagica360sitio.com/demos/vi ... erlap.html

Here is a part from the first 3x2 no overlap image used to create the video.
http://www.imagica360sitio.com/demos/vi ... verlap.jpg

This one was created following the instructions of the tutorial, transforming the panoramas setting the 3x2video output.
http://www.imagica360sitio.com/demos/vi ... video.html

Here is a part from the first image of that sequence.
http://www.imagica360sitio.com/demos/vi ... 2video.jpg

Jumping from one jpg to the other, one can notice the difference and clearly see the ( so called by me) stretched seam, running over the flag.

Regards!

JimWatters · Fri Jun 27, 2014 9:30 pm

When I look at the video I don't see this problem.

The screen grab shows that there are 5 pixels where 1, or 2 with an extra pixel overlap, should be, but I don't know how you did this.

frodo · Sat Jun 28, 2014 12:20 am

Hi Jim!
Thanks for watching.
I followed the instructions from the tutorial. At least that is what I thought and still think. In the video you can see and notice it, zooming into the building under construction, mainly when the Citroën "limousine" and later the black and yellow cab passes over or thru the seam. The still images I´ve uploaded are not screen grabs taken from the video, but taken from the already transformed images, before creating the video. In one case with overlap and in the other without it. Maybe I´m expecting to much, but I thought there would be no noticeable seams between the cubefaces at all.
If it would help and be usefull I can send you the final 3x2 video file used in both cases.
Regards!

JimWatters · Sat Jun 28, 2014 1:56 am

When I watch the video outside of Pano2VR I don't see the 5 extra rows of pixels. It looks right.
When I watch the video interactively I see there are several rows missing.
Unfortunately I don't have time to experiment right now. But wonder if you created the cubefaces the same size as the movie in the flash output. I can see you have it set much smaller.

frodo · Sat Jun 28, 2014 12:36 pm

Hi Jim!
Thanks again. I will go thru the whole process again. Somewhere I must be doing something wrong.
I don't understand at all what do you mean with "...created the cubefaces the same size as the movie in the flash output. I can see you have it set much smaller."
Regards!

JimWatters · Sat Jun 28, 2014 2:17 pm

These two swf file define how to watch the video. They have preview images embedded in them.
http://www.imagica360sitio.com/demos/vi ... 01_out.swf
http://www.imagica360sitio.com/demos/vi ... eo_out.swf

frodo · Sun Jun 29, 2014 1:27 am

Hi Jim!
Thanks for your support and patience. As said I´ve gone thru the process again. From my original panorama sequence I´ve transformed each panorama into a 3x2 output. The difference was that this time I´ve chosen 2880x1920 as output size. Before, trying to preserve the best quality and not to resize until the last moment, I´ve used 4032x2688 as the output size in the transform process.
The movie had in both cases the same size 2880x1920, because PS used to crerate the movie did not allow me the 4032x2688 size
. I don´t know where the issue was, but this time there were no artifacts or seams in the uploaded 360video. Well I know where it was, but I don´t understand why the difference in the size of the 3x2 transform output was the cause. The tutorial said that one has to follow this rule "...The image size should be divisible by 16 and equate to each cube face for an equal number of pixels wide. For example, 512*3; 960*3." The size of 4032x2688 follows that rule.
Anyway, from now on I would have to use 2880x1920 as the output size.
Thanks again for your support.
Regards!