Unable to resend the received frame

Hi,

I am trying to send the received from in onFrame function:

def on_frame(self, channel_id, remote_uid, frame:VideoFrame):
logger.info(f"on_frame, channel_id={channel_id}, remote_uid={remote_uid}, width={frame.width}, height={frame.height}, y_stride={frame.y_stride}, u_stride={frame.u_stride}, v_stride={frame.v_stride}, len_y={len(frame.y_buffer)}, len_u={len(frame.u_buffer)}, len_v={len(frame.v_buffer)}")

if self._save_to_disk:
file_path = os.path.join(log_folder, channel_id + "_" + remote_uid + '.yuv')
y_size = frame.y_stride * frame.height
uv_size = (frame.u_stride * frame.height // 2)
# logger.info(f"on_frame, file_path={file_path}, y_size={y_size}, uv_size={uv_size}, len_y={len(frame.y_buffer)}, len_u={len(frame.u_buffer)}, len_v={len(frame.v_buffer)}")
# self.push_yuv_frame()
with open(file_path, 'ab') as f:
f.write(frame.y_buffer[:y_size])
f.write(frame.u_buffer[:uv_size])
f.write(frame.v_buffer[:uv_size])
# if self.video_frame_sender!=None:
# logger.info(f"on_frame, file_path={file_path}, y_size={y_size}, uv_size={uv_size}, len_y={len(frame.y_buffer)}, len_u={len(frame.u_buffer)}, len_v={len(frame.v_buffer)}")
# exit()
# if self.loop:
self.push_yuv_frame(frame, self.video_frame_sender, "Frame Metadata")
# await asyncio.create_task(self.push_yuv_frame(frame, self.video_frame_sender, "hello metadata"))

return 1

def on_user_video_track_subscribed(self, agora_local_user, user_id, info, agora_remote_video_track):
logger.info(f"on_user_video_track_subscribed, agora_local_user={agora_local_user}, user_id={user_id}, info={info}, agora_remote_video_track={agora_remote_video_track}")
return 0
def push_yuv_frame(self,frame: VideoFrame, video_sender: VideoFrameSender, metadata: str):
yuv_buffer = bytearray(frame.y_buffer) + bytearray(frame.u_buffer) + bytearray(frame.v_buffer)

external_frame = ExternalVideoFrame()
external_frame.buffer = yuv_buffer
external_frame.type = 1 # Assuming a certain type, modify as necessary
external_frame.format = 1 # Assuming YUV format, modify as necessary
external_frame.stride = frame.y_stride
external_frame.height = frame.height
external_frame.timestamp = 0 # Modify if timestamp handling is needed
external_frame.metadata = metadata

ret = video_sender.send_video_frame(external_frame)
logger.info(f"Frame sent with status {ret}")
exit(0)

In video frame observer. I am not sure whether you support this or not? Where I can do that?