Video encoder/decoder with macroblock arrangement of significant item

A video decoder, comprising:

• a decoding unit receiving a video packet in which item groups are sequentially arranged, in a front part up to a rear part of the video packet, according to a significance of items included in blocks of macroblocks for video data corresponding to the video packet, such that a first item group with more significant items among the items included in blocks of macroblocks are arranged in the front part of the video packet and a second item group with less significant items are arranged in the rear part of the video packet, and sequentially decoding the items arranged in the video packet
• wherein each of the item groups includes items with same significance in a sequence among items included in blocks of macroblocks,
• wherein the decoding unit decodes macroblock headers of all of the macroblocks before decoding the items, with each of the macroblock headers for respective item groups, of the arranged item groups, being arranged in the video packet in front of all of the arranged item groups within the video packet, and
• wherein the decoding unit decodes plural blocks for one macroblock, of the macroblocks, in parallel based upon-plural items for each of the plural blocks being separately addressable within the video packet based upon a select one of the macroblock headers in the video packet corresponding to the one macroblock.

A video decoder comprising:

• a variable length decoding unit receiving a video packet in which item groups are sequentially arranged, in a front part up to a rear part of the video packet, according to a significance of items included in blocks of macroblocks for video data corresponding to the video packet, such that a first item group with more significant items among the items included in blocks of macroblocks are arranged in the front part of the video packet and a second item group with less significant items are arranged in the rear part of the video packet and which sequentially variable-length-decodes the items arranged in the video packet, wherein each of the item groups includes items with same significance in a sequence among items included in blocks of macroblocks;
• an inverse quantizer inversely quantizing all decoded blocks received from the variable length decoding unit;
• an inverse discrete cosine transform (IDCT) unit performing IDCT on all inversely quantized blocks;
• and
• a motion compensator compensating for motions of all IDCTed blocks,
• wherein the variable length decoding unit decodes macroblock headers of all of the macroblocks before decoding the items, with each of the macroblock headers for respective item groups, of the arranged item groups, being arranged in the video packet in front of all of the item groups within the video packet, and
• wherein the variable length decoding unit decodes plural blocks for one macroblock, of the macroblocks, in parallel based upon plural items for each of the plural blocks being separately addressable within the video packet based upon a select one of the macroblock headers in the video packet corresponding to the one macroblock.

A video decoding method, comprising:

• receiving a video packet in which item groups are sequentially arranged, in a front part up to a rear part of the video packet, according to a significance of items included in blocks of macroblocks for video data corresponding to the video packet, such that a first item group with more significant items of items among the items included in blocks of macroblocks, are arranged in the front part of the video packet, wherein each of the item groups includes items with same significance in a sequence among items included in blocks of macroblocks;
• and
• sequentially decoding, using at least one processing device, the items arranged in the video packet,
• wherein in the decoding, macroblock headers of all of the macroblocks are decoded before decoding the items, with each of the macroblock headers for respective item groups, of the arranged item groups, being arranged in the video packet in front of all of the arranged item groups within the video packet, and
• wherein in the decoding, plural blocks for one macroblock, of the macroblocks, are decoded in parallel based upon plural items for each of the plural blocks being separately addressable within the video packet based upon a select one of the macroblock headers in the video packet corresponding to the one macroblock.

A video decoding method comprising:

• receiving a video packet in which item groups are sequentially arranged, in a front part up to a rear part of the video packet, according to a significance of items included in blocks of macroblocks for video data corresponding to the video packet, such that a first item group with more significant items among the items included in blocks of macroblocks, are arranged in the front part of the video packet and less significant items are arranged in a rear part of the video packet and sequentially variable-length-decoding the items arranged in the video packet, wherein each of the item groups includes items with same significance in a sequence among items included in blocks of macroblocks;
• inversely quantizing all variable-length-decoded blocks;
• performing inverse discrete cosine transform (IDCT) on all inversely quantized blocks;
• and
• compensating for motions of all IDCTed blocks,
• wherein in the decoding, macroblock headers of all of the macroblocks are decoded before decoding the items, with each of the macroblock headers for respective item groups, of the arranged item groups, being arranged in the video packet in front of all of the arranged item groups within thee video packet items, and
• wherein in the decoding, plural blocks for one macroblock, of the macroblocks, are decoded in parallel based upon plural items for each of the plural blocks being separately addressable within the video packet based upon a select one of the macroblock headers in the video packet corresponding to the one macroblock.

A non-transitory medium comprising computer readable code to control a computational device to implement a video decoding method, the video decoding method comprising:

• receiving a video packet in which item groups are sequentially arranged, in a front part up to a rear part of the video packet, according to a significance of items included in blocks of macroblocks for video data corresponding to the video packet, such that a first item group with more significant items among the items included in blocks of macroblocks for video data corresponding to the video packet, are arranged in a front part of the video packet and a second item group less significant items are arranged in a rear part of the video packet wherein each of the item groups includes items with same significance in a sequence among items included in blocks of macroblocks;
• and
• sequentially decoding the items arranged in the video packet,
• wherein in the decoding, macroblock headers of all of the macroblocks are decoded before the items, with each of the macroblock headers for respective item groups, of the arranged item groups, being arranged in the video packet in front of all of the arrangegd item groups within the video packet, and
• wherein in the decoding, plural blocks for one macroblock, of the macroblocks, are decoded in parallel based upon plural items for each of the plural blocks being separately addressable within the video packet based upon a select one of the macroblock headers in the video packet corresponding to the one macroblock.