def _download_gif(self,
file: telegram.File,
channel_id: str = "") -> Tuple[IO[bytes], str, str, str]:
"""
Download and convert GIF image.
Args:
file: Telegram File object
channel_id: Destination channel ID of the message
Returns:
Tuple[IO[bytes], str, str, str]:
``tempfile`` file-like object, MIME type, proposed file name
"""
file, _, filename, path = self._download_file(file, 'video/mpeg')
gif_file = tempfile.NamedTemporaryFile(suffix='.gif')
v = VideoFileClip(path)
self.logger.info(
"Convert Telegram MP4 to GIF from "
"channel %s with size %s", channel_id, v.size)
if channel_id == "blueset.wechat" and v.size[0] > 600:
# Workaround: Compress GIF for slave channel `blueset.wechat`
# TODO: Move this logic to `blueset.wechat` in the future
subprocess.Popen([
"ffmpeg", "-y", "-i", path, '-vf', "scale=600:-2",
gif_file.name
],
bufsize=0).wait()
else:
v.write_gif(gif_file.name, program="ffmpeg")
file.close()
gif_file.seek(0)
return gif_file, "image/gif", os.path.basename(
gif_file.name), gif_file.name
def _download_gif(self,
file: telegram.File) -> Tuple[IO[bytes], str, str, str]:
"""
Download and convert GIF image.
Args:
file: Telegram File object
Returns:
Tuple[IO[bytes], str, str, str]:
``tempfile`` file-like object, MIME type, proposed file name
"""
file, _, filename, path = self._download_file(file, 'video/mpeg')
gif_file = tempfile.NamedTemporaryFile(suffix='.gif')
VideoFileClip(path).write_gif(gif_file.name, program="ffmpeg")
file.close()
gif_file.seek(0)
return gif_file, "image/gif", os.path.basename(
gif_file.name), gif_file.name
