Closed
Description
I am trying to resize and stream .gif files. It works fine when writing to a file but not when streaming.
The following command to write to a file works:
$ vipsthumbnail sample_animated.gif -o x1.gif --size '400x>'
but the following fails
$ cat sample_animated.gif|vips thumbnail_source [descriptor=0] --size down .gif 400 --height 16000 > x2.gif
VipsForeignSave: ".gif" is not a known target format
Is there anyway I can save a .gif file to stdout? I am assuming vipsthumbnail doesn't support stdout yet.
A similar but maybe unrelated issue occurs with heic files.
The following command works:
$ vipsthumbnail sample1.heic -o x.jpg --size '400x>'
but the following fails
$ cat sample1.heic |vips thumbnail_source [descriptor=0] --size down .png '400x>' --height 16000 > x.jpg
heif: Invalid input: No 'ftyp' box (2.102)