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Statements

Subject Item
dbr:X264
dbo:wikiPageWikiLink
dbr:Variance_Adaptive_Quantization
Subject Item
dbr:Variance_Adaptive_Quantization
rdfs:label
Variance Adaptive Quantization
rdfs:comment
Variance Adaptive Quantization (VAQ) is a video encoding algorithm that was first introduced in the open source video encoder x264. According to Xvid Builds FAQ: "It's an algorithm that tries to optimally choose a quantizer for each macroblock using advanced math algorithms." It was later ported to programs which encode video content in other video standards, like MPEG-4 ASP or MPEG-2. In the case of Xvid, the algorithm is intended to make up for the earlier limitations in its Adaptive Quantization mode. The first Xvid library containing this improvement was released in February 2008.
foaf:depiction
n13:Parkrun_x264_no_VAQ.png n13:Parkrun_x264_with_VAQ.png
dcterms:subject
dbc:Signal_processing dbc:Video_compression
dbo:wikiPageID
28227121
dbo:wikiPageRevisionID
1031594130
dbo:wikiPageWikiLink
dbc:Video_compression dbr:MPEG-2 dbr:MPEG-4_ASP dbc:Signal_processing dbr:X264 dbr:Xvid dbr:Quantization_(signal_processing) dbr:Macroblock
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dbo:thumbnail
n13:Parkrun_x264_no_VAQ.png?width=300
dbp:align
right
dbp:alt
With VAQ Without VAQ
dbp:caption
With VAQ Without VAQ
dbp:direction
vertical
dbp:header
Visual quality gain in x264:
dbp:image
Parkrun_x264_no_VAQ.png Parkrun_x264_with_VAQ.png
dbp:width
300
dbo:abstract
Variance Adaptive Quantization (VAQ) is a video encoding algorithm that was first introduced in the open source video encoder x264. According to Xvid Builds FAQ: "It's an algorithm that tries to optimally choose a quantizer for each macroblock using advanced math algorithms." It was later ported to programs which encode video content in other video standards, like MPEG-4 ASP or MPEG-2. In the case of Xvid, the algorithm is intended to make up for the earlier limitations in its Adaptive Quantization mode. The first Xvid library containing this improvement was released in February 2008.
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wikipedia-en:Variance_Adaptive_Quantization?oldid=1031594130&ns=0
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2279
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Subject Item
dbr:VAQ
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dbr:Variance_Adaptive_Quantization
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dbr:Variance_Adaptive_Quantization
Subject Item
wikipedia-en:Variance_Adaptive_Quantization
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