Documentation for MDS/TranscodingHints

Technique Transcoding
Document NXXX MPEG-7 Comittee Draft MDS
Name Peter M. Kuhn (Sony Japan), Teruhiko Suzuki (Sony Japan), Anthony Vetro (Mitsubishi MERL)
Email pkuhn@av.crl.sony.co.jp
Contact pkuhn@av.crl.sony.co.jp
Type Application
External Libraries libklt
Related Ds/DSs ??
Used Ds/DSs none
Input MPEG-Video (foo.mpg)
Output Extraction: Transcoding Metadata (DDL file)
Transcoding: Transcoded Bitstream (foo.mpg)
Extraction Yes
Client Appl Transcoding Application
Summary This component computes metadata for use in transcoding. This component provides a baseband transcoder, which transcodes video between different MPEG-1, MPEG-2, and MPEG-4 (as a separate component) formats. Strong Points Reduction of transcoding complexity while preserving the visual quality. Insertion of I-frames at arbitrary location, e.g. at scene changes.
Limitations NONE
Known Problems NONE
Parameters /* default application name*/
Application TransServer

/* default database file name*/
ListFile Trans.lst

/* default bitstream file*/
Bitstream Trans.ddl

/* parmeter file for extraction*/
/*Extractparfile Trans.par*/

/* Parameter files for the reencoder */
Encoding_par_filename news1_1000.par
Difficulty_par_filename news1_diff_1000.par
Sim_Dir_filename .

/* stat.out.bits location (generated by xmpg2enc) */
Difficulty_bits_filename stat.out.q1.bits

/* decoding startframe */
startframe 8

/* number of frames to be decoded */
frames 1000

/* */
seg_frames 0

/* number of featurepoints for which a new segment is started 100 */
fp_new_me_seg 50

/* minimum length of segment */
segmin 12

/* maximum lenght of segment */
me_segmax 400

/* 1: fixed search range with me_max, 0: variable search range */
me_fix 0

/* maximum search range */
me_max 15

/* minimum search range */
me_min 8

/* time base*/
nnfraction 30
nn 1

/* which difficulty hints to be used */
m_use_me_search_range 1
m_use_motion_uncompensability 1
m_use_difficulty 1