I've been using following command to get a thumbnail out of video (and merge it together with mask file to get a transparency):
as you can see the final thumb should be 256x144 (my mask file has also dimentions of 256x144) and it is working.Code:-ss 00:10:00 -i "myVideo" -i "maskPicture" -filter_complex scale=256x144, alphamerge -f image2 -pix_fmt rgba -vframes 1 -y "myThumb"
My question is if it is possible to make a thumb "aspect-ratio aware" - at the moment all 16:9 videos work fine but if input video is 4:3 the picture gets wider to fit 256x144 aspect ratio. Is it possible to keep original video's ascpect in thumbnail ( by adding black borders to fill the sides) ?
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Is it possible to keep original video's ascpect in thumbnail ( by adding black borders to fill the sides) ?
Thanks, that really is a "just"