Select the first image in a multi-image file format such as tiff when…

[fmeisschaert]

… generating a still.

Imagemagick convert will create dest-1.jpeg, dest-2.jpeg, ... when detecting multiple images in a tiff file. Since a single file "dest.jpeg" is expected still generation will fail. So by explicitly selecting the first image in yjr source we can be sure that there will always be a single "dest.jpeg". This works also in the case of a jpeg source where there is only one image possible for 1 file. (A noop)

There is also an added benefit. Some professional camera's add a lowres image to a tiff file with a corrupt exif directory. By selecting only the first highres image the "convert" command will not fail in this situation.

[rblanker]

Thank you. I will have a look at this and run our unit tests to see everything still works. I'm not sure if this will work for images that are not multiple-image?

[fmeisschaert]

Hello Robert, It works also for single-image formats such as jpeg. Imagemagick just takes the image itself in those cases. Kind Regards, Frank

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On 14 Nov 2017, at 13:46, Robert Blanker ***@***.***> wrote: Thank you. I will have a look at this and run our unit tests to see everything still works. I'm not sure if this will work for images that are not multiple-image? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[rblanker]

Thank you!