AUTOMATIC GENERATION OF H.264 PARAMETER SETS TO RECOVER VIDEO FILE FRAGMENTS

1 . A method for generating a Sequence Parameter Set and a Picture Parameter Set for decoding an H.264 coded video file fragment, comprising:

identifying a start of frame data;

creating a parameter dictionary;

detecting an entropy coding-mode;

updating the parameter dictionary;

identifying a plurality of headers; and

verifying a generated picture.

2 . The method of claim 1 , wherein the start of frame data is identified by identifying an Instantaneous Decoder Refresh.

3 . The method of claim 1 , wherein the parameter dictionary comprises a plurality of tuples.

4 . The method of claim 3 , wherein the plurality of tuples represents a plurality of parameters in the Sequence Parameter Set, and wherein the plurality of tuples represents a plurality of parameters in the Picture Parameter Set.

5 . The method of claim 4 , wherein the plurality of parameters in the Sequence Parameter and the plurality of parameters in the Picture Parameter Set comprise core parameters.

6 . The method of claim 1 , wherein the entropy coding-mode is detected with a classifier.

7 . The method of claim 6 , wherein the classifier differentiates between a first entropy coding mode using a CABAC coding method and a second entropy coding mode using a CAVLC coding method.

8 . The method of claim 1 , wherein a correlation between the generated picture decoded with a generated header and an original picture decoded using an original header is used to verify the generated picture.

9 . A method for generating a file header for decoding a file fragment, comprising:

constructing a dataset;

extracting a plurality of core parameters in the dataset; and

using the plurality of core parameters to create a parameter dictionary.

10 . The method of claim 9 , wherein the file fragment is a video file fragment encoded using an H.264 format.

11 . The method of claim 9 , wherein the file header comprises a Sequence Parameter Set.

12 . The method of claim 9 , wherein the file header comprises a Picture Parameter Set.

13 . The method of claim 9 , wherein the parameter dictionary comprises a plurality of tuples.

14 . The method of claim 13 , wherein the plurality of tuples represents a plurality of parameters in the Sequence Parameter Set, and wherein the plurality of tuples represents a plurality of parameters in the Picture Parameter Set.

15 . The method of claim 14 , wherein the plurality of parameters in the Sequence Parameter and the plurality of parameters in the Picture Parameter Set comprise core parameters.

16 . A method for generating a plurality of parameters used for decoding a file fragment, comprising:

inputting a plurality of I frames and a parameter dictionary into a system, wherein the system executes the method comprising:

detecting an entropy coding-mode;

updating the parameter dictionary;

identifying a plurality of headers; and

verifying a generated picture.