EP 3005689 A4 20170111 - SYSTEMS AND METHODS OF ENCODING MULTIPLE VIDEO STREAMS WITH ADAPTIVE QUANTIZATION FOR ADAPTIVE BITRATE STREAMING
Title (en)
SYSTEMS AND METHODS OF ENCODING MULTIPLE VIDEO STREAMS WITH ADAPTIVE QUANTIZATION FOR ADAPTIVE BITRATE STREAMING
Title (de)
SYSTEME UND VERFAHREN ZUR CODIERUNG MEHRERER VIDEO-STREAMS MIT ADAPTIVER QUANTISIERUNG ZUM STREAMING MIT ADAPTIVER BITRATE
Title (fr)
SYSTÈMES ET PROCÉDÉS POUR CODER DE MULTIPLES FLUX VIDÉO PAR QUANTIFICATION ADAPTATIVE POUR DIFFUSION EN FLUX À DÉBIT BINAIRE ADAPTATIF
Publication
Application
Priority
- US 201361827512 P 20130524
- US 201313931449 A 20130628
- US 2014039425 W 20140523
Abstract (en)
[origin: WO2014190308A1] A method for encoding source video as alternative video streams includes collecting statistics on source video data and writing statistics to shared memory in a first pass through received multimedia content, where the statistics include complexity measures of blocks of pixels, determining initial encoding information for source video data and writing initial encoding information to shared memory during the first pass, encoding the source video data in parallel using collected statistics and initial encoding information to produce alternative video streams during a second pass, and parallel encoding processes reuse additional encoding information that has already been determined for a portion of video and generate additional encoding information that has not already been determined for a portion of video, where the additional encoding information includes quantization parameters for blocks of pixels.
IPC 8 full level
H04N 19/124 (2014.01); H04N 19/14 (2014.01); H04N 19/176 (2014.01); H04N 19/194 (2014.01); H04N 19/436 (2014.01); H04N 19/61 (2014.01)
CPC (source: EP KR)
H04N 19/103 (2014.11 - KR); H04N 19/124 (2014.11 - EP); H04N 19/14 (2014.11 - EP); H04N 19/176 (2014.11 - EP); H04N 19/194 (2014.11 - EP); H04N 19/436 (2014.11 - EP KR); H04N 19/61 (2014.11 - EP); H04N 21/236 (2013.01 - KR)
Citation (search report)
- [E] EP 2962461 A1 20160106 - SONIC IP INC [US]
- [Y] US 2011305273 A1 20111215 - HE YAMING [US], et al
- [Y] US 6192154 B1 20010220 - RAJAGOPALAN RAJESH [US], et al
- [Y] US 2008063051 A1 20080313 - KWON DO KYOUNG [KR], et al
- [Y] US 5477272 A 19951219 - ZHANG YA-QIN [US], et al
- [Y] WESTERINK P H ET AL: "Two-pass MPEG-2 variable-bit-rate encoding", IBM JOURNAL OF RESEARCH AND DEVELOPMENT, INTERNATIONAL BUSINESS MACHINES CORPORATION, NEW YORK, NY, US, vol. 43, no. 4, 4 July 1999 (1999-07-04), pages 471 - 488, XP002395114, ISSN: 0018-8646
- See references of WO 2014190308A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014190308 A1 20141127; CN 105359511 A 20160224; EP 3005689 A1 20160413; EP 3005689 A4 20170111; JP 2016526336 A 20160901; KR 101823321 B1 20180131; KR 20160021141 A 20160224; KR 20180010343 A 20180130
DOCDB simple family (application)
US 2014039425 W 20140523; CN 201480038648 A 20140523; EP 14800901 A 20140523; JP 2016515129 A 20140523; KR 20157036373 A 20140523; KR 20187002004 A 20140523