Multi-image files -or- read mods issue

[robStewart-128]

I'm trying to pull out single images from a multi-image TIFF using read mods...

The command is equivalent to (from a multi-image TIFF of 10 images extract the 0th image):
convert srcFile.tif[0] dstFile.tif

Output file is undefined, errors in console are...

convert: UnableToOpenBlob 'srcFile.tif': No such file or directory @ error/blob.c/OpenBlob/3485.
convert: NoImagesDefined `dstFile.tif' @ error/convert.c/ConvertImageCommand/3300.

This happens no matter the image number (zero to nine).
Does WASM-ImageMagick support this?

[KnicKnic]

I tried using mylink
with image from http://www.nightprogrammer.org/wp-uploads/2013/02/multipage_tiff_example-300x225.jpg
https://www.nightprogrammer.org/development/multipage-tiff-example-download-test-image-file/

And I got that jpeg wasn't supported. I am not familiar with multi file tiffs. I am not sure if you need to enable features in the compiler to support them or not.

[robStewart-128]

Only certain image formats support Images with multiple images, pages or frames. Animated GIFs are an example. TIFFs can support them too. Basic JPGs, PNGs do not. (Putting aside APNG/MNG).
Read mods include image, page or frame selection with the use of the single number in the square bracket "[1]" and other things.
Use "identify" on an image and you'll see a related number in square brackets in multiple lines of output (Note - even the dimensions can change)...

srcFile[0] TIFF 1903x899 1903x899+0+0 8-bit sRGB 34.2717MiB 0.000u 0:00.000
srcFile[1] TIFF 1903x899 1903x899+0+0 8-bit sRGB 0.000u 0:00.000
...
srcFile[9] TIFF 1903x873 1903x873+0+0 8-bit sRGB 0.000u 0:00.000

You can find example TIFFs here