upload mp4s to tumblr as gifs (fixes #7)

delojza.py

@@ -6,6 +6,7 @@ import os
 import pprint
 import re
 import shutil
+import subprocess
 import sys
 import tempfile
 import unicodedata
@@ -332,8 +333,16 @@ class DelojzaBot:
                 now = cmd_hashtag == 'TUMBLR_NOW'
                 reply = '(btw, {})'.format("***FIRING TO TUMBLR RIGHT AWAY***" if now else "queueing to tumblr")
                 message.reply_text(reply, parse_mode=telegram.ParseMode.MARKDOWN)
-                for filetitle in filenames:
-                    response = self.tumblr_client.create_photo(self.tumblr_name, data=filetitle,
+                for filename in filenames:
+                    if filename.endswith(".mp4"):
+                        try:
+                            output_filename = filename[:-len(".mp4")] + ".gif"
+                            subprocess.check_output(['ffmpeg', '-i', filename, output_filename])
+                            filename = output_filename
+                        except subprocess.CalledProcessError:
+                            message.reply_text("Conversion to gif failed, sorry! Check log...")
+                            continue
+                    response = self.tumblr_client.create_photo(self.tumblr_name, data=filename,
                                                                state="published" if now else "queue")
                     if 'id' in response:
                         tumblr_ids.append(response['id'])