I have about 150 Images that I need to merge together. I have tried to go about this by using the GDAL misc > merge tool but it is too much for QGIS to handle with even 20 images at a time. I was wondering if there was a different way to go about this. The image layers I am using are Multi-band not singleband layers.

  • What do you want to achieve? The file size and extents might get huge. I would not recommend doing it in the first place. – pLumo Jul 6 '17 at 12:58
  • @RoVo Ultimately I need an aerial view for a 25 mile stretch of land split up into 4 sections. I will split it up after I get the one big image because that would be the easiest way for me. I can use another command to compress the size of the image down once I get them all merged. – Shub Jul 6 '17 at 13:03
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    @Joseph I got your way to work it seems like now after Save-as on the VRT to make it into a TIFF. Thank You. – Shub Jul 6 '17 at 13:19
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    @Jhunt9 - Most welcome, glad it helped! Will post the comment as an answer for the convenience of others :) – Joseph Jul 6 '17 at 13:31

You could build a virtual raster which allows you to merge multiband rasters. This should be less memory-intensive than the gdal_merge tool. You can access this from the same menu:

Raster > Miscellaneous > Build Virtual Raster (Catalog)

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