Method for utilizing at least one storage space sharing scheme to manage storage spaces utilized by video playback operation and related video playback apparatus thereof

A video playback apparatus, comprising:

• a storage device, having a first storage space and a second storage space allocated therein;
• and
• a video playback processing device, coupled to the storage device, wherein during a first time period, the video playback processing device accesses the first storage space for data associated with a first processing operation performed by the video playback processing device, and accesses the second storage space for data associated with a second processing operation performed by the video playback processing device, where the first processing operation is different from the second processing operation, and the second storage space is dedicated during the first time period to buffering data associated with the second processing operation;
• and during a second time period different from the first time period, the video playback processing device accesses the first storage space and the second storage space for data associated with the first processing operation of the video playback operation performed by the video playback processing device;
• wherein the second storage space is different from the first storage space;
• and the second storage space is not accessed by the first processing operation performed by the video playback processing device during the first time period, and is accessed by the first processing operation of the video playback operation performed by the video playback processing device during the second time period.