# Use cartopy to change the projection of the downloaded images to North Polar Stereo, set the extent of the output plot, and clip by a circle.Īx = plt.axes(projection=ccrs.NorthPolarStereo())Īx.set_extent(, aoi, aoi, aoi], ccrs.PlateCarree())Īx.add_feature(cfeature.COASTLINE, edgecolor='grey') # Make a directory to hold altered images Img_url = img_vis.getThumbURL(thumb_params) Img_vis = col_vis.filter(ee.Filter.eq('date', date)).first() 'region': ee.Geometry.BBox(aoi, aoi, aoi, aoi),ĭates = col_vis.aggregate_array('date').getInfo()

#Get thumbnails of the visualization collection downloaded locally Var collection = ee.ImageCollection('MODIS/006/MOD13Q1') Var arcticDEM = ee.Image('UMN/PGC/ArcticDEM/V3/2m_mosaic') Display a clipped version of the mosaic. var geometry = ee.Geometry.Point().buffer(2500000) But this results in a broken image thumbnail when printed to the console. So, I tried to reproject MODIS scenes before rendering them in case that was the issue (knowing that reprojection is advised against).

I noted that the ArcticDEM dataset, which comes with the stereographic projection, does not have this issue. You can see this in action if you increase the latitude of the point to be closer and closer to 90 paradoxically, higher latitudes will be rendered the lower the latitude that is chosen for the point center. if I just clip Greenland I can get all of Greenland). However, if I define a geometry as a latitudinally thin rectangle, I can get data close the North Pole to render (e.g. For example, the geometry object below renders both in the console and as an actual clipper as a thin line circling the globe. I tried to clip the MODIS dataset to my ROI but GEE seems to behave oddly if you give it polygons too near to the north pole. When I create the animated thumbnail of a MODIS image collection and choose the polar CRS ( 'EPSG:5936'), I get a big black hole in the middle of my scene, just like this GDAL example. with a polar projection (such as WGS 84 / EPSG Alaska Polar Stereographic, as used by ArcticDEM Explorer) in Google Earth Engine. fps is not even an option so ffmpeg -i in. I get the correct video file but the audio file contains 7 tracks, each one containing 8 channels. It is no longer needed for the FFmpeg AAC encoder unless your ffmpeg cli tool is really old, and if thats the case please update. I also want the audio file to have 7 tracks - one with the first 2 channels, and another 6 with each of the remaining channels. I want to create 2 files from that - one with the video, and one with the audio. I have a file that has the following format (note the number of tracks and channels within each track): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a.mov':ĭuration: 00:01:02.04, start: 0.000000, bitrate: 29083 kb/s

Ffmpeg map pgc