Storage system and method for improved playback analysis
A storage system and method for improved playback analysis are provided. In one embodiment, a storage system is provided comprising a memory and a controller. The controller is configured to identify a plurality of frames in video data stored in the memory that differ from surrounding frames by more than a threshold amount; receive a request from a host for quick playback of the video data; and send the plurality of frames to the host. Other embodiments are provided.
1. A storage system comprising:
a memory; and
a controller configured to:
identify a plurality of frames in video data stored in the memory that differ from surrounding frames by more than a threshold amount, wherein each frame in the video data is associated with a respective time tag;
receive, from a host, a request for quick playback of the video data;
in response to receiving the request from the host, send the plurality of frames instead of the video data to the host;
receive, from the host, an identification of time tags of frames not in the plurality of frames; and
send the frames corresponding to the time tags to the host.
2. The storage system of claim 1 , wherein the controller is further configured to identify the plurality of frames based on entropy changes in the video data.
3. The storage system of claim 2 , wherein the controller is further configured to detect entropy changes by decoding only intra-coded picture frames (I-frames in the video data.
4. The storage system of claim 1 , wherein the controller is further configured to:
create an album of the plurality of frames; and
send the album to the host.
5. The storage system of claim 1 , wherein the controller is further configured to send time tags of the plurality of frames to the host in response to a request from the host for the time tags of the plurality of frames.
6. The storage system of claim 1 , wherein the controller is further configured to send logical block addresses of the plurality of frames to the host in response to a request from the host for the logical block addresses.
7. The storage system of claim 1 , wherein the controller is further configured to:
create an album of the plurality of frames; and
store the album in a private area of the memory.
8. The storage system of claim 1 , wherein the controller is further configured to send the plurality of frames to the host using a vendor-specific protocol.
9. The storage system of claim 1 , wherein the controller is further configured to identify the plurality of frames as the video data is received by the storage system.
10. The storage system of claim 1 , wherein the memory comprises a three-dimensional memory.
11. A method comprising:
performing the following in a storage system comprising a memory:
storing video data in a read-write logical unit number (LUN) of the memory;
identifying a plurality of instances in the video data based on an entropy analysis;
storing the identified plurality of instances as files in a read-only LUN, wherein the read-only LUN is under control of the storage system;
receiving, from a host, a request for quick playback of the video data;
sending, to the host, logical block addresses of each of the files stored in the read-only LUN;
receiving, from the host, a request to read the logical block addresses; and
sending the files to the host.
12. The method of claim 11 , wherein the plurality of instances are identified by decoding only intra-coded picture frames (I-frames) the video data.
13. The method of claim 11 , further comprising creating an album comprising the plurality of instances.
14. The method of claim 11 , wherein the album comprises time tags of the plurality of instances.
15. A storage system comprising:
a memory;
means for identifying a plurality of frames in video data stored in the memory that differ from surrounding frames by more than a threshold amount, wherein each frame in the video data is associated with a respective time tag;
means for receiving, from a host, a request for quick playback of the video data;
means for sending the plurality of frames instead of the video data to the host n response to receiving the request from the host;
means for receiving, from the host, an identification of time tags of frames not n the plurality of frames; and
means for sending the frames corresponding to the time tags to the host.
16. The storage system of claim 1 , wherein:
the video data is stored in a read-write logical unit number (LUN) of the memory; and
the controller is further configured to store the plurality of frames as files in a read-only LUN.
17. The method of claim 11 , further comprising:
sending time tags of the plurality of instances to the host.
18. The method of claim 17 , further comprising:
receiving, from the host, an identification of time tags of additional instances requested by the host.
19. The method of claim 11 , wherein the files are sent to the host using a vendor-specific protocol.
20. The method of claim 13 , wherein the album comprises logical block addresses of the plurality of instances.