Make it support gifs + use the virtualenv even if not currently activated

Makefile

@@ -11,20 +11,27 @@ run: montage
 	git submodule init
 	git submodule update
 	virtualenv -p python3 .venv
-	source .venv/bin/activate
-	pip install -r requirements.txt
+	source .venv/bin/activate; pip install -r requirements.txt
 
-clean:
-	rm -rf .venv images images-cropped logs contrib
+cleanvenv:
+	rm -rf .venv
+
+cleanimages:
+	rm -rf images images-cropped logs contrib
 	rm -f montage.jpg
 
+clean: cleanvenv cleanimages
+
 images: .venv
-	. .venv/bin/activate
-	python -m selfie_bot
+	. .venv/bin/activate; python -m selfie_bot
 
 images-cropped: images
 	mkdir images-cropped | true
 	convert -trim 'images/*' ./images-cropped/%04d.png
 
 montage: images-cropped
-	python ./contrib/collage_maker/collage_maker.py -f ./images-cropped -o montage.jpg -w 1920 -i 360 -s
+	. .venv/bin/activate; python ./contrib/collage_maker/collage_maker.py -f ./images-cropped -o montage.jpg -w 1920 -i 360 -s
+
+
+montage-horizontal: images-cropped
+	ls -d ./images-cropped/* | xargs -n 10 echo | xargs -I% bash -c "montage -background none -geometry 1920x1080 -tile x1 % out/montage-horizontal-\`dd if=/dev/urandom bs=1 count=4 2>/dev/null| xxd -ps\`.png"

selfie_bot/image_utils.py

@@ -23,6 +23,8 @@ def rotate_if_exif_specifies(image):
         # No rotation tag present, so we don't need to rotate
         logger.debug('EXIF data present but no rotation tag, so not transforming')
         return image
+    except AttributeError:
+        return image
 
     value_to_transform = {
         1: (0, False),