fix some bugs

src/discordbot/discordbot.py

@@ -152,7 +152,6 @@ async def query_database():
                 )
                 embed.set_thumbnail(url=thumb_url)
                 embed.add_field(name='Download MP4', value=f'[Download Video]({video_url})', inline=False)
-                embed.set_author(name='DeflaxTV', icon_url=bot.user.avatar_url)
     
                 # Sending the embed to the channel
                 await live_channel.send(embed=embed)

src/scheduler/scheduler.py

@@ -214,7 +214,7 @@ def exec_recorder(stream_id, stream_hls_url):
         # Generate thumbnail image from the recorded mp4 file
         ffmpeg_thumb = (
             FFmpeg()
-            .input(video_output, thumb_skip_time)
+            .input(video_output, ss=thumb_skip_time)
             .filter('scale', thumb_width, -1)
             .output(thumb_output, vframes=1)
         )