Final version

helpers.py

@@ -0,0 +1,42 @@
+import asyncio
+import os
+import time
+from datetime import datetime
+
+
+def hhmmss(seconds):
+    x = time.strftime('%H:%M:%S', time.gmtime(seconds))
+    return x
+
+
+async def screenshot(video, duration, sender):
+    if os.path.exists(f'{sender}.jpg'):
+        return f'{sender}.jpg'
+    time_stamp = hhmmss(int(duration)/2)
+    out = datetime.now().isoformat("-", "seconds")+".jpg"
+    cmd = ["ffmpeg",
+           "-ss",
+           f"{time_stamp}",
+           "-i",
+           f"{video}"
+           "-frames:v",
+           "1",
+           f"{out}"
+           "-y"
+           ]
+    process = await asyncio.create_subprocess_exec(
+        *cmd,
+        stdout=asyncio.subprocess.PIPE,
+        stderr=asyncio.subprocess.PIPE
+    )
+    stdout, stderr = await process.communicate()
+    x = stderr.decode().strip()
+    y = stdout.decode().strip()
+    if os.path.isfile(out):
+        return out
+    else:
+        None
+    if os.path.isfile(out):
+        return out
+    else:
+        None