Supporting trickplay of streaming DLNA multimedia by HLS access device
Methods, systems, and computer readable media can be operable to facilitate the generation of a continuous multimedia stream during trickplay operations. When a trickplay request is received by a device that is processing a video stream for delivery to a media player, the device may modify the video stream to create a seamless delivery and playback of the underlying content at the media player. In response to a trickplay request such as a pause request or seek request, the device may identify a seek target based on the request and may initiate a new video stream that begins at the identified seek target. The device may further modify the new stream by trimming from the stream any content that is already stored or cached at the media player, thereby creating a video stream without any discontinuities.
1. A method comprising:
receiving a piece of content from a content source as a first multimedia stream, wherein the first multimedia stream comprises a digital living network alliance stream;
converting the first multimedia stream into a first client stream, wherein the first client stream comprises a HLS stream;
outputting the first client stream to a media player;
receiving a trickplay request from the media player, wherein the trickplay request comprises a creation of a resume point within the piece of content;
identifying a seek target within the piece of content, wherein the seek target is identified based upon the resume point;
terminating the first multimedia stream;
requesting a second multimedia stream from the content source, wherein the second multimedia stream comprises a digital living network alliance stream, wherein the second multimedia stream comprises one or more segments of the piece of content, and wherein the first segment of the second multimedia stream comprises the seek target;
receiving the second multimedia stream from the content source;
converting the second multimedia stream into a second client stream, wherein the second client stream comprises a HLS stream, and wherein converting the second multimedia stream into the second client stream comprises segmenting the second multimedia stream; and
outputting the second client stream to the media player.
2. The method of claim 1 , wherein the trickplay request comprises a seek request, and wherein the seek target is identified from within the seek request.
3. The method of claim 2 , wherein outputting the second client stream to the media player comprises:
publishing the second client stream to the media player as a new video source; and
replacing a current video source at the media player with the new video source.
4. The method of claim 1 , wherein the trickplay request comprises a pause request, and wherein the seek target comprises a current playback position of the piece of content at the media player.
5. The method of claim 4 , further comprising:
determining a last frame of the piece of content that is cached within a buffer of the media player;
identifying a frame within the first segment of the second multimedia stream that matches a frame of the piece of content that immediately follows the last frame cached within the buffer of the media player; and
modifying the first segment of the second multimedia stream by dropping one or more frames that are earlier within the segment than the identified frame.
6. The method of claim 5 , wherein outputting the second client stream to the media player comprises:
appending the modified first segment to an existing manifest.
7. The method of claim 1 , wherein the content source comprises a digital living network alliance source.
8. An apparatus comprising:
an interface configured to be used to receive a piece of content from a content source as a first multimedia stream, wherein the first multimedia stream comprises a digital living network alliance stream; and
one or more modules configured to:
convert the first multimedia stream into a first client stream, wherein the first client stream comprises a HLS stream;
output the first client stream to a media player;
receive a trickplay request from the media player, wherein the trickplay request comprises a creation of a resume point within the piece of content;
identify a seek target within the piece of content, wherein the seek target is identified based upon the resume point;
terminate the first multimedia stream;
request a second multimedia stream from the content source, wherein the second multimedia stream comprises a digital living network alliance stream, wherein the second multimedia stream comprises one or more segments of the piece of content, and wherein the first segment of the second multimedia stream comprises the seek target;
receive the second multimedia stream from the content source;
convert the second multimedia stream into a second client stream, wherein the second client stream comprises a HLS stream, and wherein converting the second multimedia stream into the second client stream comprises segmenting the second multimedia stream; and
output the second client stream to the media player.
9. The apparatus of claim 8 , wherein the trickplay request comprises a seek request, and wherein the seek target is identified from within the seek request.
10. The apparatus of claim 9 , wherein outputting the second client stream to the media player comprises:
publishing the second client stream to the media player as a new video source; and
replacing a current video source at the media player with the new video source.
11. The apparatus of claim 8 , wherein the trickplay request comprises a pause request, and wherein the seek target comprises a current playback position of the piece of content at the media player.
12. The apparatus of claim 11 , wherein the one or more modules are further configured to:
determine a last frame of the piece of content that is cached within a buffer of the media player;
identify a frame within the first segment of the second multimedia stream that matches a frame of the piece of content that immediately follows the last frame cached within the buffer of the media player; and
modify the first segment of the second multimedia stream by dropping one or more frames that are earlier within the segment than the identified frame.
13. The apparatus of claim 12 , wherein outputting the second client stream to the media player comprises:
appending the modified first segment to an existing manifest.
14. One or more non-transitory computer readable media having instructions operable to cause one or more processors to perform the operations comprising:
receiving a piece of content from a content source as a first multimedia stream, wherein the first multimedia stream comprises a digital living network alliance stream;
converting the first multimedia stream into a first client stream, wherein the first client stream comprises a HLS stream;
outputting the first client stream to a media player;
receiving a trickplay request from the media player, wherein the trickplay request comprises a creation of a resume point within the piece of content;
identifying a seek target within the piece of content, wherein the seek target is identified based upon the resume point;
terminating the first multimedia stream;
requesting a second multimedia stream from the content source, wherein the second multimedia stream comprises a digital living network alliance stream, wherein the second multimedia stream comprises one or more segments of the piece of content, and wherein the first segment of the second multimedia stream comprises the seek target;
receiving the second multimedia stream from the content source;
converting the second multimedia stream into a second client stream, wherein the second client stream comprises a HLS stream, and wherein converting the second multimedia stream into the second client stream comprises segmenting the second multimedia stream; and
outputting the second client stream to the media player.
15. The one or more non-transitory computer-readable media of claim 14 , wherein the trickplay request comprises a seek request, and wherein the seek target is identified from within the seek request.
16. The one or more non-transitory computer-readable media of claim 15 , wherein outputting the second client stream to the media player comprises:
publishing the second client stream to the media player as a new video source; and
replacing a current video source at the media player with the new video source.
17. The one or more non-transitory computer-readable media of claim 14 , wherein the trickplay request comprises a pause request, and wherein the seek target comprises a current playback position of the piece of content at the media player.
18. The one or more non-transitory computer-readable media of claim 17 , wherein the instructions are further operable to cause one or more processors to perform the operations comprising:
determining a last frame of the piece of content that is cached within a buffer of the media player;
identifying a frame within the first segment of the second multimedia stream that matches a frame of the piece of content that immediately follows the last frame cached within the buffer of the media player; and
modifying the first segment of the second multimedia stream by dropping one or more frames that are earlier within the segment than the identified frame.
19. The one or more non-transitory computer-readable media of claim 18 , wherein outputting the second client stream to the media player comprises:
appending the modified first segment to an existing manifest.
20. The one or more non-transitory computer-readable media of claim 14 , wherein the content source comprises a digital living network alliance source.