January 30, 2016 at 4:50 pm #7401
Celine KaladjianForum Member
After days of looking up information on the Internet, I ended up here. Glad to see there is a 360 video forum.
I have several questions regarding 360 metadatas. I’ve been trying to figure out what the Youtube injector really injects. But I haven’t found any metadata reader that would show that. Do you know any?
My ultimate goal is to manually write or modify 360 videos metadata. But as I can’t find any information about its structure, I’m lost. I’ve seen on a forum a guy showing the source code of 360 metadata and it looked exactly like what I needed (amount of zoom etc.).
Any thoughts? Any software that could help me? Any idea of how 360 metadata actually work?
Thank you!February 4, 2016 at 1:45 pm #7458
Jean-Pierre NavarroIVRPA Professional Member
Not sure if this will help.
JPierre NavarroFebruary 5, 2016 at 3:19 am #7466
Sam RohnIVRPA Director Member webmaster
360 video metadata:
exiftool will read and edit metadata on most video files, including 360° VR video
also see this this link for a collection of specifications and tools for 360° video and spatial audio, including: Spatial Audio metadata specification, Spherical Video metadata specification, Spatial Media tools for injecting spatial media metadata in video files
the current 360 spherical video metatdata scheme draft is here
sample metatdata looks like this –123456789101112131415161718192021222324<rdf:sphericalvideo xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"xmlns:GSpherical="http://ns.google.com/videos/1.0/spherical/"><gspherical:spherical>true</gspherical:spherical><gspherical:stitched>true</gspherical:stitched><gspherical:stitchingsoftware>OpenCV for Windows v2.4.9</gspherical:stitchingsoftware><gspherical:projectiontype>equirectangular</gspherical:projectiontype><gspherical:sourcecount>6</gspherical:sourcecount><gspherical:initialviewheadingdegrees>90</gspherical:initialviewheadingdegrees><gspherical:initialviewpitchdegrees>0</gspherical:initialviewpitchdegrees><gspherical:initialviewrolldegrees>0</gspherical:initialviewrolldegrees><gspherical:timestamp>1400454971</gspherical:timestamp><gspherical:croppedareaimagewidthpixels>1920</gspherical:croppedareaimagewidthpixels><gspherical:croppedareaimageheightpixels>1080</gspherical:croppedareaimageheightpixels><gspherical:fullpanowidthpixels>1900</gspherical:fullpanowidthpixels><gspherical:fullpanoheightpixels>960</gspherical:fullpanoheightpixels><gspherical:croppedarealeftpixels>15</gspherical:croppedarealeftpixels><gspherical:croppedareatoppixels>60</gspherical:croppedareatoppixels></rdf:sphericalvideo>
360 photo metadata:
here are a few tutorials on editing google street view photosphere metadata in existing panos using ExifTool –
samFebruary 22, 2016 at 10:18 pm #7776
Tumble YawForum Member
So I’ve been looking at this code in the metadata_utils.py , and am seeing options for:
“InitialViewHeadingDegrees”, “InitialViewPitchDegrees”, but do not see these show up on the 360 metadata tool. Did you manage to make this work, so we can set these parameters for example when the camera was facing the wrong way and we want to re-assign the 0 degree point…?
Thanks !September 11, 2016 at 4:44 am #10249
Andre WilleyForum Member
I too am trying to find out how to simply inject initial heading/pitch/fieldofview metadata into a 360-degree video file. For some reason, the rudimentary software provided with Samsung’s Gear 360 renders the 360 video 2:1 file in reverse – i.e. the default view is for the rear of the image to be displayed first.
For future videos I can just hold the camera the ‘wrong’ way round of course, but I need to correct some existing material before I can properly upload it to YouTube. Facebook allows you to change the initial view settings after uploading, but FB has size and time limitations. YouTube allows for bigger uploads, but you can’t reorient the default initial view.
I’ve tried exiftool (which has been my regular tag editing tool for photos for many years) and while it displays all of the regular video metadata from my 360 MP4 files, it doesn’t display any gspherical tags at all, even after using the Spatial Media Metadata Injector tool. (Verbose mode does note that the tag is present, but it reports that the format is unsupported)
Any thoughts on this issue, as there seem to be a lot of questions on the web about this but no useful answers of a nice little freeware tool to do the job.
AndreDecember 14, 2016 at 12:43 am #11367
Paul GaileyForum Member
The app tool VRfix manually writes spherical metadata back into 360 video files on both iOS and Android.
Is that what you are looking for Celine?
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