Lossless FMO and Slice Structure Modification for Compressed H.264 Video

Author

Tan, Wai-tian ; Setton, Eric ; Apostolopoulos, John

Author_Institution

Hewlett-Packard Lab., Palo Alto

Volume

4

fYear

2007

fDate

Sept. 16 2007-Oct. 19 2007

Abstract

We introduce a scheme to losslessly modify pre-compressed H.264 video to enable at streaming time (1) modification of slice sizes to fit transport packet size, and (2) introduction of an error resilience feature, namely flexible macroblock ordering. By lossless we mean the reconstructed video from the modified bitstream is identical to that from the original compressed bitstream. We outline how this transcoder operates, and discuss some of its restrictions. The bit rate overhead for operating on the pre-compressed, rather than directly encoding the original video with the desired characteristics, is analyzed. Simulation results show 1 to 2 dB improvement when our scheme is applied to QuickTime generated H.264 videos transported over a lossy packet network.

Keywords

data compression; image reconstruction; transcoding; video coding; H.264 video compression; QuickTime; error resilience feature; lossless flexible macroblock ordering; lossy packet network; modified bitstream; slice structure modification; transcoder; video reconstruction; Automatic voltage control; Bit rate; Degradation; Laboratories; MPEG 4 Standard; Propagation losses; Resilience; Streaming media; Transcoding; Video compression; Error resilience; H.264; MPEG-4 AVC;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2007. ICIP 2007. IEEE International Conference on

Conference_Location

San Antonio, TX

ISSN

1522-4880

Print_ISBN

978-1-4244-1437-6

Electronic_ISBN

1522-4880

Type

conf

DOI

10.1109/ICIP.2007.4380010

Filename

4380010