Exporting full Landsat image to GeoTIFF in Google Earth Engine?

Question

I am trying to get a complete Landsat image in Google Earth Engine, but the export shows some mistakes like this:

I have calculated the total pixel numbers and it is impossible to have such a huge amount of pixels: 7621X7761X4=236586324

The link of code is here:https://code.earthengine.google.com/38c19f74ee68ff44a0c2c22c0231cb87

I am wondering is there any wrong with this export code? And is there any way to output GeoTIFF image in patches like we export images in tfrecord?

Update:

Although I tried to set the maxPiexels to successfully export a Landsat image according to the suggestion from Sean, it still has some problems: First, the exported data are automatically separated into some files and I do not know how:

Second, when I downloaded all these images and open them in ENVI, the total size of these patches is not correct, and all values are 0.

Answer 1

Not sure why you get such a large number of pixels. I tested your script at found a little over 600 mio pixels. If you set maxPixels parameter of the export to a number large enough to allow the export it should work.

Export.image.toDrive({
  image: study_l1.first().select('B4','B5','B2','B3'),
  description: 'test_landsat',
  scale: 30,
  folder: 'landsat8_sample',
  maxPixels: 6.2e
});

Alternatively export each band individually to further reduce the maxPixels.