Patent ID: 7418190
Filing Date: 2008-08-26
Classification: H04N

Abstract:
1. A method comprising: decoding, with a decoder, a series of encoded video frames in a digital video stream; and capturing one or more decoder states of the decoder as the decoder is decoding one or more associated video frames, the decoder states containing information that, when loaded into one of the same decoder or a different decoder, enables decoding to begin at or near the video frames associated with the decoder states; storing the one or more decoder states in an index that associates the one or more decoder states with the one or more associated frames, wherein the storing comprises storing the one or more decoder states in the index using lossy compression; playing the series of encoded video frames by using a particular decoder state in the state index to begin decoding at or near a target video frame in the digital video stream from which playback is requested; pausing the series of encoded video frames after decoding and rendering the video frame associated with the particular decoder state such that a lower quality image quality image is depicted due to the image being reconstructed using a lossy compressed decoder state; and decoding video frames preceding the video frame associated with the particular decoder state to produce a higher quality image and substituting the higher quality image for the lower quality image.