Data storage device and method for auto-peeling of surveillance video content to increase archival storage
A data storage device and method for auto-peeling of surveillance video content to increase archival storage is provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to determine that available storage space in the memory is less than a threshold; in response to determining that the available storage space in the memory is less than the threshold: read a video file from the memory; and re-encode the video file to decrease a size of the video file, wherein re-encoding the video file increases available storage space in the memory without deleting the video file. Other embodiments are provided.
1. A data storage device comprising:
a memory; and
a controller configured to:
receive first video data;
store the first video data in the memory at a first quality level;
after expiration of a first time period:
read the first video data from the memory;
re-encode the first video data at a second quality level, wherein the second quality level is lower than the first quality level; and
store the first video data re-encoded at the second quality level in the memory;
receive second video data;
store the second video data in the memory at the first quality level; and
after expiration of a second time period:
read the first video data from the memory;
re-encode the first video data at a third quality level, wherein the third quality level is lower than the second quality level;
store the first video data re-encoded at the third quality level in the memory;
read the second video data from the memory;
re-encode the second video data at the second quality level; and
store the second video data re-encoded at the second quality level in the memory.
2. The data storage device of claim 1 , wherein the second quality level is lower than the first quality level in terms of resolution.
3. The data storage device of claim 1 , wherein the second quality level is lower than the first quality level in terms of bit rate.
4. The data storage device of claim 1 , wherein the second quality level is lower than the first quality level in terms of number of video frames.
5. The data storage device of claim 1 , wherein the controller is further configured to update a logical-to-physical address map to indicate the re-encoded first video data.
6. The data storage device of claim 1 , wherein a portion of the memory is allocated for storage of video data.
7. The data storage device of claim 1 , wherein the controller comprises an audio/video encoder/decoder configured to re-encode the first video data.
8. The data storage device of claim 1 , wherein the first video data comprises a surveillance video.
9. The data storage device of claim 1 , wherein the memory comprises a three-dimensional memory.
10. The method of claim 9 , wherein the first video file comprises a surveillance video.
11. A method comprising:
performing the following in a data storage device comprising a memory:
receiving a first video file;
storing the first video file in the memory at a first quality level;
after expiration of a first time period:
reading the first video file from the memory;
re-encoding the first video file at a second quality level, wherein the second quality level is lower than the first quality level; and
storing the first video file re-encoded at the second quality level in the memory;
receiving a second video file;
storing the second video file in the memory at the first quality level; and
after expiration of a second time period:
reading the first video file from the memory;
re-encoding the first video file at a third quality level, wherein the third quality level is lower than the second quality level;
storing the first video file re-encoded at the third quality level in the memory;
reading the second video file from the memory;
re-encoding the second video file at the second quality level; and
storing the second video file re-encoded at the second quality level in the memory.
12. The method of claim 11 , wherein the second quality level is lower than the first quality level in terms of resolution.
13. The method of claim 11 , wherein the second quality level is lower than the first quality level in terms of bit rate.
14. The method of claim 11 , wherein the second quality level is lower than the first quality level in terms of number of video frames.
15. The method of claim 11 , further comprising updating a logical-to-physical address map to indicate the re-encoding the first video file.
16. The method of claim 11 , wherein a portion of the memory is allocated for storage of video files.
17. The method of claim 11 , wherein the first video file is re-encoded using an audio/video encoder/decoder in the data storage device.
18. The method of claim 11 , wherein the memory comprises a three-dimensional memory.
19. A data storage device comprising:
a memory;
means for receiving a first video file;
means for storing the first video file in the memory at a first quality level;
means for performing after expiration of a first time period:
reading the first video file from the memory;
re-encoding the first video file at a second quality level, wherein the second quality level is lower than the first quality level; and
storing the first video file re-encoded at the second quality level in the memory;
means for receiving a second video file;
means for storing the second video file in the memory at the first quality level; and
means for performing after expiration of a second time period:
reading the first video file from the memory;
re-encoding the first video file at a third quality level, wherein the third quality level is lower than the second quality level;
storing the first video file re-encoded at the third quality level in the memory;
reading the second video file from the memory;
re-encoding the second video file at the second quality level; and
storing the second video file re-encoded at the second quality level in the memory.