Apng - Error delegate failed ffmpeg

Hi,

I am trying to use Magick.Net (v7.22.1) to build an animated png (apng) file in VB.net.

I have copied the latest ffmpeg.exe to the bin folder and am trying to adapt the gif example code (https://github.com/dlemstra/Magick.NET/blob/master/docs/CombiningImages.md) to output a apng file by adjusting the .Write line to something like;

collection.Write(“Snakeware.apng”, MagickFormat.APng)

I keep getting an error; delegate failed `“ffmpeg.exe” -nostdin -v -1 -i “%M%%d.pam” -plays %I “%u.%m” 2> “%u”’ @ error/delegate.c/InvokeDelegate/1898

I appreciate i am probably missing something obvious, but i couldn’t find any examples for apng creation so i’m just guessing it would be similar to a gif.

Thanks

[dlemstra]

This issue should be resolved in the latest release. Can you give it another try?

[alaw-lufc]

I did some further tests, when i retested last time at some stage i’d changed the file extension of the output to .png e.g. collection.Write(“Snakeware.png”, MagickFormat.APng) That errors as above, but if i change to collection.Write(“Snakeware.apng”, MagickFormat.APng) and it works in 7.22.2.2!

So this is resolved. Thanks.