![]() X8 frames use their own Huffman codes (code lengths are stored as nibbles somewhere in bitstream) and also blocks looks like to be decoded in this way: RES_RTM: Old version of WMV3 with different P-frame coding mode.RES_TRANSTAB: each macroblock should have its own DC/AC table index, not one global stored in the frame header.RES_FASTTX: still unknown, somehow interferes with motion compensation (at least it does not affect bitstream). ![]() This also means that each I-frame has additional bit in frame header signalling if current frame should be encoded with X8 or with standard encoding scheme. RES_X8: I-frames may be packed with X8 algo.These flags are mostly used by WMVP and WVP2 RES_SM: really that’s two flags, RES_SM&2 indicated 411 interlaced mode and RES_SM&1 indicates sprite mode(or so it seems).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |