Abstract: A method for live streaming an audio-video file is disclosed, in which an original audio-video file is obtained; an audio frame and a video frame are read from the original audio-video file; the video frame is transcoded into video frames with different code rates; the video frames with different code rates are synthesized respectively with the audio frame into audio-video files with different code rates; the audio frames and the video frames are extracted from the audio-video files with different code rates respectively to form respective video streams; and different video streams are pushed.

Abstract: A video source access method and a video source access device are provided. In some embodiments, the method includes acquiring an address identifier of a video source supporting a certain format, where the video source includes video data in the format carrying a timestamp; acquiring, based on the address identifier, the video data in an ascending order of the timestamp carried in the video data; converting the video data from the format into a preset common video format to obtain the video data in the common video format; and inputting the video data in the common video format to a service device to achieve an access to the video source.

Abstract: A method for live streaming an audio-video file is disclosed, in which an original audio-video file is obtained; an audio frame and a video frame are read from the original audio-video file; the video frame is transcoded into video frames with different code rates; the video frames with different code rates are synthesized respectively with the audio frame into audio-video files with different code rates; the audio frames and the video frames are extracted from the audio-video files with different code rates respectively to form respective video streams; and different video streams are pushed.