View source for Documentation:Modules/schroedinger

The schroedinger module replaces the earlier {{docmod|dirac}} module for decoding and encoding [[Dirac]], a [[video codec]].

== Demux ==
{{Module|name=schroedinger|type=Access demux|first_version=0.9.0|description=[[Dirac]] video decoder using libschroedinger}}

This module has a shortcut of <code>schroedinger</code>.

=== Options ===
None.
{{Clear}}

== Mux ==
{{Module|name=schroedinger|type=Muxer|first_version=1.1.8|description=[[Dirac]] video encoder using libschroedinger}}

This module has shortcuts of <code>schroedinger</code> and <code>schro</code>.
{{Clear}}

=== Options ===
{{Option
|name=sout-schro-rate-control
|value=string
|default=NULL
|select={constant_noise_threshold,constant_bitrate,low_delay,lossless,constant_lambda,constant_error,constant_quality}
|description=Method used to encode the video sequence
}}
{{Option
|name=sout-schro-quality
|value=float
|default=-1.
|min=-1.
|max=10.
|description=Quality factor to use in constant quality mode
}}
{{Option
|name=sout-schro-noise-threshold
|value=float
|default=-1.
|min=-1.
|max=100.
|description=Noise threshold to use in constant noise threshold mode
}}
{{Option
|name=sout-schro-bitrate
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Target [[bitrate]] in kbps when encoding in constant bitrate mode
}}
{{Option
|name=sout-schro-max-bitrate
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Maximum bitrate in kbps when encoding in constant bitrate mode
}}
{{Option
|name=sout-schro-min-bitrate
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Minimum bitrate in kbps when encoding in constant bitrate mode
}}
{{Option
|name=sout-schro-gop-structure<span id="select_sout-schro-gop-structure"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-gop-structure|{adaptive,intra_only,backref,chained_backref,biref,chained_biref}]]
|description=[[GOP]] structure used to encode the video sequence
}}
{{Option
|name=sout-schro-gop-length
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Number of pictures between successive sequence headers i.e. length of the group of pictures
}}
{{Option
|name=sout-schro-chroma-fmt<span id="select_sout-schro-chroma-fmt"></span>
|value=string
|default=420
|select=[[#appendix_select_sout-schro-chroma-fmt|{420,422,444}]]
|description=Picking chroma format will force a conversion of the video into that format
}}
{{Option
|name=sout-schro-coding-mode<span id="select_sout-schro-coding-mode"></span>
|value=string
|default=auto
|select=[[#appendix_select_sout-schro-coding-mode|{auto,progressive,field}]]
|description=Field coding is where [[interlaced]] fields are coded separately as opposed to a pseudo-progressive frame
}}
{{Option
|name=sout-schro-mv-precision
|value=string
|default=NULL
|select={1,1/2,1/4,1/8}
|description=Motion Vector precision in pels
}}
{{Option
|name=sout-schro-intra-wavelet<span id="select_sout-schro-intra-wavelet"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-intra-wavelet|{desl_dubuc_9_7,le_gall_5_3,desl_dubuc_13_7,haar_0,haar_1,fidelity,daub_9_7}]]
|description=Intra picture DWT filter
}}
{{Option
|name=sout-schro-inter-wavelet<span id="select_sout-schro-inter-wavelet"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-inter-wavelet|{desl_dubuc_9_7,le_gall_5_3,desl_dubuc_13_7,haar_0,haar_1,fidelity,daub_9_7}]]
|description=Inter picture DWT filter
}}
{{Option
|name=sout-schro-transform-depth
|value=integer
|default=-1
|min=-1
|max=<var>SCHRO_LIMIT_ENCODER_TRANSFORM_DEPTH</var>
|description=Also known as DWT levels
}}
{{Option
|name=sout-schro-filtering<span id="select_sout-schro-filtering"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-filtering|{none,center_weighted_median,gaussian,add_noise,adaptive_gaussian,lowpass}]]
|description=Enable adaptive prefiltering
}}
{{Option
|name=sout-schro-filter-value
|value=float
|default=-1.
|min=-1.
|max=100.0
|description=Higher value implies more prefiltering
}}

=== Advanced options ===
{{Option
|name=sout-schro-motion-block-size<span id="select_sout-schro-motion-block-size"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-motion-block-size|{auto,small,medium,large}]]
|description=Size of motion compensation blocks
}}
{{Option
|name=sout-schro-motion-block-overlap<span id="select_sout-schro-motion-block-overlap"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-motion-block-overlap|{automatic,none,partial,full}]]
|description=Overlap of motion compensation blocks
}}
{{Option
|name=sout-schro-me-combined
|value=integer
|default=-1
|min=-1
|max=1
|description=Use chroma as part of the motion estimation process
}}
{{Option
|name=sout-schro-enable-hierarchical-me
|value=integer
|default=-1
|min=-1
|max=1
|description=Enable hierarchical Motion Estimation
}}
{{Option
|name=sout-schro-downsample-levels
|value=integer
|default=-1
|min=-1
|max=8
|description=Number of levels of downsampling in hierarchical motion estimation mode
}}
{{Option
|name=sout-schro-enable-global-me
|value=integer
|default=-1
|min=-1
|max=1
|description=Enable Global Motion Estimation
}}
{{Option
|name=sout-schro-enable-phasecorr-me
|value=integer
|default=-1
|min=-1
|max=1
|description=Enable Phase Correlation Estimation
}}
{{Option
|name=sout-schro-enable-multiquant
|value=integer
|default=-1
|min=-1
|max=1
|description=Enable multiple quantizers per subband (one per codeblock)
}}
{{Option
|name=sout-schro-codeblock-size<span id="select_sout-schro-codeblock-size"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-codeblock-size|{automatic,small,medium,large,full}]]
|description=Size of code blocks in each subband
}}
{{Option
|name=sout-schro-enable-scd
|value=integer
|default=-1
|min=-1
|max=1
|description=Enable Scene Change Detection
}}
{{Option
|name=sout-schro-perceptual-weighting
|value=string
|default=NULL
|select={none,ccir959,moo,manos_sakrison}
|description=perceptual weighting method
}}
{{Option
|name=sout-schro-perceptual-distance
|value=float
|default=-1
|min=-1.
|max=100.
|description=perceptual distance to calculate perceptual weight
}}
{{Option
|name=sout-schro-enable-noarith
|value=integer
|default=-1
|min=-1
|max=1
|description=Use variable length codes instead, useful for very high bitrates
}}
{{Option
|name=sout-schro-horiz-slices
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Number of horizontal slices per [[frame]] in low delay mode
}}
{{Option
|name=sout-schro-vert-slices
|value=integer
|default=-1
|min=-1
|max=<var>INT_MAX</var>
|description=Number of vertical slices per frame in low delay mode
}}
{{Option
|name=sout-schro-force-profile<span id="select_sout-schro-force-profile"></span>
|value=string
|default=NULL
|select=[[#appendix_select_sout-schro-force-profile|{auto,vc2_low_delay,vc2_simple,vc2_main,main}]]
|description=Force Profile
}}

=== Appendix ===
<span id="appendix_select_sout-schro-gop-structure"></span>
'''For the option <code>[[#select_sout-schro-gop-structure|--sout-schro-gop-structure]]</code>:'''
;adaptive:No fixed [[GOP]] structure. A picture can be intra or inter and refer to previous or future pictures.
;intra_only:I-frame only sequence
;backref:Inter pictures refere to previous pictures only
;chained_backref:Inter pictures refere to previous pictures only
;biref:Inter pictures can refer to previous or future pictures
;chained_biref:Inter pictures can refer to previous or future pictures

----
<span id="appendix_select_sout-schro-chroma-fmt"></span>
'''For the option <code>[[#select_sout-schro-chroma-fmt|--sout-schro-chroma-fmt]]</code>:'''
;420:4:2:0
;422:4:2:2
;444:4:4:4

----
<span id="appendix_select_sout-schro-coding-mode"></span>
'''For the option <code>[[#select_sout-schro-coding-mode|--sout-schro-coding-mode]]</code>:'''
;auto:auto - let encoder decide based upon input (Best)
;progressive:force coding frame as single picture
;field:force coding frame as separate interlaced fields

----
<span id="appendix_select_sout-schro-motion-block-size"></span>
'''For the option <code>[[#select_sout-schro-motion-block-size|--sout-schro-motion-block-size]]</code>:'''
;automatic:automatic - let encoder decide based upon input (Best)
;small:small - use small motion compensation blocks
;medium:medium - use medium motion compensation blocks
;large:large - use large motion compensation blocks

----
<span id="appendix_select_sout-schro-motion-block-overlap"></span>
'''For the option <code>[[#select_sout-schro-motion-block-overlap|--sout-schro-motion-block-overlap]]</code>:'''
;automatic:automatic - let encoder decide based upon input (Best)
;none:none - Motion compensation blocks do not overlap
;partial:partial - Motion compensation blocks only partially overlap
;full:full - Motion compensation blocks fully overlap

----
<span id="appendix_select_sout-schro-intra-wavelet"></span><span id="appendix_select_sout-schro-inter-wavelet"></span>
'''For the options <code>[[#select_sout-schro-intra-wavelet|--sout-schro-intra-wavelet]]</code> and <code>[[#select_sout-schro-inter-wavelet|--sout-schro-inter-wavelet]]</code>:'''
;desl_dubuc_9_7:Deslauriers-Dubuc (9,7)
;le_gall_5_3:LeGall (5,3)
;desl_dubuc_13_7:Deslauriers-Dubuc (13,7)
;haar_0:Haar with no shift
;haar_1:Haar with single shift per level
;fidelity:Fidelity filter
;daub_9_7:Daubechies (9,7) integer approximation

----
<span id="appendix_select_sout-schro-codeblock-size"></span>
'''For the option <code>[[#select_sout-schro-codeblock-size|--sout-schro-codeblock-size]]</code>:'''
;automatic:automatic - let encoder decide based upon input (Best)
;small:small - use small code blocks
;medium:medium - use medium sized code blocks
;large:large - use large code blocks
;full:full - One code block per subband

----
<span id="appendix_select_sout-schro-filtering"></span>
'''For the option <code>[[#select_sout-schro-filtering|--sout-schro-filtering]]</code>:'''
;none:No pre-filtering
;center_weighted_median:Centre Weighted Median
;gaussian:Gaussian Low Pass Filter
;add_noise:Add Noise
;adaptive_gaussian:Gaussian Adaptive Low Pass Filter
;lowpass:Low Pass Filter

----
<span id="appendix_select_sout-schro-force-profile"></span>
'''For the option <code>[[#select_sout-schro-force-profile|--sout-schro-force-profile]]</code>:'''
;auto:automatic - let encoder decide based upon input (Best)
;vc2_low_delay:VC2 Low Delay Profile
;vc2_simple:VC2 Simple Profile
;vc2_main:VC2 Main Profile
;main:Main Profile

== Source code ==
* {{VLCSourceFile|modules/codec/schroedinger.c}}

{{Documentation}}