Some image file formats support metadata that can include "DPI," but it is essentially meaningless to the image itself. The image data itself has no inherent "size" of pixels. The measurement of how many pixels fit in an inch only matters on output on a printer or display on a device. An image has so many individual pixels, for which there is data in the file. It is a construct based on output capabilities of hardware. One thing to realize is that DPI has nothing to do with the data in an image. If yes, kindly assist me as I am stuck here for the long time. Is it possible to achieve the same using FFMPEG. magick convert "test.tif" "test.jpg": converted to jpg and dpi is 300.Tried -q:v and -qscale options, but it's just changing the width and height of image.įinally I heard about ImageMagick and problem is solved in first attempt by using following command: ffmpeg -y -i test.tif -pix_fmt test.gif (tried all 3 supported format:yuvj420p,yuvj422p yuvj444p): Converted to jpg but dpi is changed from 300 to 96.įfmpeg y -i test.tif -r 1 -q:v test.jpg (tried various range: 1 to 10): Same problem.It seems like only extension is changed to jpg. ffmpeg -y -i test.tif -c:v copy test.jpg: Converted to jpg with 300 dpi but actual file format is still tif.
(Verified by pressing Right click on image -> properties-> details tab -> horizontal and vertical resolution attributes) ffmpeg -y -i test.tif test.jpg: Successfully converted to jpg but DPI has reduced from 300 to 96.I am new to FFMPEG and tried following failed attempts to achieve this: We are using FFMPEG in our java application and I am trying to convert a tiff file to jpg but the requirement is to keep the SAME DPI as it has in original tiff file.
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