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<div class="manualcontent">
 
<div class="manualcontent">
  
{{Template:M-Navlinks-top|Platform:Manual|Platform:Dvo_Effects_Dvo_Fix|Platform:Dvo_Effects_Dvo_Print_Align}}
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{{Template:M-Navlinks-top|UM:Manual|UM:Dvo_Effects_Dvo_Fix|UM:Dvo_Effects_Dvo_Print_Align}}
  
 
{{Template:M-Title|DVO Flicker}}
 
{{Template:M-Title|DVO Flicker}}
  
<p class="p_DVBodyText"><span class="f_DVBodyText" style="font-style: italic;">DVO Flicker</span><span class="f_DVBodyText"> analyses the image sequence to remove brightness and chrominance fluctuations. These may be caused by varying exposure time, unsynchronised light sources, telecine tranfer, aging film stock and/or film chemical related issues.</span></p>
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{{M-AppearsFromRelease|2014.2}}
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">Chrominance flucuations are often termed </span><span class="f_DVTableText" style="font-style: italic;">chroma breathing</span><span class="f_DVTableText">.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-enable.png|alt=ch-dvo_flicker-enable]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">The effect is enabled and the colour mode of the input set via the basic setup options :</span></p>
 
<p class="p_DVHeader1"><span class="f_DVHeader1">Setup</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">The main configuration options are described below.</span></p>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Mode</span></p>
 
<p class="p_DVHeader2">[[File:ch-dvo_flicker-mode.png|alt=ch-dvo_flicker-mode]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">This parameter describes the general </span><span class="f_DVBodyText" style="font-style: italic;">nature</span><span class="f_DVBodyText"> of the flickering. There is one setting curernt, </span><span class="f_DVBodyText" style="font-style: italic;">Location Invariant. </span><span class="f_DVBodyText">This</span><span class="f_DVBodyText" style="font-style: italic;"> </span><span class="f_DVBodyText">is a flicker that occurs globally on a frame and is not isolated to portions within a frame.</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">Future releases will include more </span><span class="f_DVTableText" style="font-style: italic;">Mode</span><span class="f_DVTableText"> options.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Temporal Window</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-temporal-window.png|alt=ch-dvo_flicker-temporal-window]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Values :</span></p>
 
</td>
 
<td style="width:368px;" valign="top" width="368"><p class="p_Paragraph"><span class="f_Paragraph">5, 7, 9 , 11</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:368px;" valign="top" width="368"><p class="p_Paragraph"><span class="f_Paragraph">11</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">The </span><span class="f_DVBodyText" style="font-style: italic;">Temporal Window</span><span class="f_DVBodyText"> specifies how many frames to use for the analysis.</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">You should usually leave this at the default value.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Variation Control</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-variation-control.png|alt=ch-dvo_flicker-variation-control]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">Numeric slider, value range 0-1. </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Range :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0 to 1</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0.5</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">The </span><span class="f_DVBodyText" style="font-style: italic;">Variation Control</span><span class="f_DVBodyText"> parameter sets how precise and controlled we are when we make adjustments for flicker. The higher the value we use, the more care is taken. Lower values allow for </span><span class="f_DVBodyText" style="font-style: italic;">larger</span><span class="f_DVBodyText"> adjustments (less </span><span class="f_DVBodyText" style="font-style: italic;">control</span><span class="f_DVBodyText">).</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">Lower values (allowing larger adjustments) are best for </span><span class="f_DVTableText" style="font-style: italic;">simple</span><span class="f_DVTableText"> scenes. Larger settings may be required to take better account of more complex and dynamic scenes with more real-world intensity changes (e.g. high-speed pans etc.).</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Enhanced Adjust</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-enhanced-adjust.png|alt=ch-dvo_flicker-enhanced-adjust]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Values :</span></p>
 
</td>
 
<td style="width:368px;" valign="top" width="368"><p class="p_Paragraph"><span class="f_Paragraph">Off, Low, Medium, High</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:368px;" valign="top" width="368"><p class="p_Paragraph"><span class="f_Paragraph">Medium</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">This will apply further processing enhancements to deal with small scale variations (both local and global).</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #d50000; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_alert.png|alt=dv_alert]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">The </span><span class="f_DVTableText" style="font-style: italic;">High</span><span class="f_DVTableText"> setting will apply a specialised </span><span class="f_DVTableText" style="font-style: italic;">noise</span><span class="f_DVTableText"> filter and noticeably affect processing speed.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Max Adjust Limitation</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-max-adjust.png|alt=ch-dvo_flicker-max-adjust]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Range :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0 to 10</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">4</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">This sets an adjustment limit to the general processing mode. The setting corresponds to a </span><span class="f_DVBodyText" style="font-style: italic;">percentage</span><span class="f_DVBodyText"> (%) of the full signal.</span></p>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Black Level Save</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-black-level-save.png|alt=ch-dvo_flicker-black-level-save]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText" style="font-style: italic;">Black Level Save</span><span class="f_DVBodyText"> lets us enable specific processing to preserve black levels in the sequence.</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">If enabled, the </span><span class="f_DVBodyText" style="font-style: italic;">Low</span><span class="f_DVBodyText"> and </span><span class="f_DVBodyText" style="font-style: italic;">High</span><span class="f_DVBodyText"> parameters are used to assign the level of processing performed at the lower (blackest) end of the input sequence. Both </span><span class="f_DVBodyText" style="font-style: italic;">Low</span><span class="f_DVBodyText"> and </span><span class="f_DVBodyText" style="font-style: italic;">High</span><span class="f_DVBodyText"> are 10 bit numbers and limited to values between 0 and 100 (out of the full 10 bit range, 1024).</span></p>
 
<p class="p_DVHeader3"><span class="f_DVHeader3">Low</span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Range :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0 to 100</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">If the input level is less than or equal to the setting for </span><span class="f_DVBodyText" style="font-style: italic;">Low</span><span class="f_DVBodyText">, no flicker adjustment is performed and the input signal is untouched.</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVHeader3"><span class="f_DVHeader3">High</span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="0" cellpadding="2" cellspacing="0" style="border: none; border-spacing:0px;">
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Range :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">0 to 100</span></p>
 
</td>
 
</tr>
 
<tr style="text-align:left;vertical-align:top;">
 
<td style="width:80px;" valign="top" width="80"><p class="p_Paragraph" style="text-align: right;"><span class="f_Paragraph" style="font-weight: bold;">Default :</span></p>
 
</td>
 
<td style="width:116px;" valign="top" width="116"><p class="p_Paragraph"><span class="f_Paragraph">1</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">If the input level is greater than or equal to the setting for </span><span class="f_DVBodyText" style="font-style: italic;">High</span><span class="f_DVBodyText">, full flicker adjustment is performed.</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">In between these values, there is a </span><span class="f_DVTableText" style="font-style: italic;">soft transition</span><span class="f_DVTableText"> between none and full processing.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVHeader2"><span class="f_DVHeader2">Chroma</span></p>
 
<p class="p_DVBodyText">[[File:ch-dvo_flicker-chroma.png|alt=ch-dvo_flicker-chroma]]</p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText">The </span><span class="f_DVBodyText" style="font-style: italic;">Chroma</span><span class="f_DVBodyText"> button enables the removal of </span><span class="f_DVBodyText" style="font-style: italic;">chrominance flicker</span><span class="f_DVBodyText"> (i.e."colour breathing").</span></p>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
<div style="text-align: left; text-indent: 0px; padding: 0px 0px 0px 0px; margin: 0px 0px 0px 0px;"><table border="1" cellpadding="0" cellspacing="10" style="border: solid 1px #ff9900; border-spacing:10px;">
 
<tr style="text-align:left;vertical-align:middle;">
 
<td style="width:36px; border: none" valign="top" width="36"><p class="p_DVTableText">[[File:dv_note.png|alt=dv_note]]</p>
 
</td>
 
<td style="width:760px; border: none" valign="middle" width="760"><p class="p_DVTableText"><span class="f_DVTableText">The </span><span class="f_DVTableText" style="font-style: italic;">Chroma</span><span class="f_DVTableText"> toggle removes </span><span class="f_DVTableText" style="font-style: italic;">luminance flicker</span><span class="f_DVTableText"> as well (if present). However, for best performance, leave </span><span class="f_DVTableText" style="font-style: italic;">Chroma</span><span class="f_DVTableText"> off unless you have </span><span class="f_DVTableText" style="font-style: italic;">chrominance</span><span class="f_DVTableText"> flickering to remove.</span></p>
 
</td>
 
</tr>
 
</table>
 
</div>
 
<p class="p_DVBodyText"><span class="f_DVBodyText"> </span></p>
 
  
{{Template:M-Navlinks-bottom|Platform:Manual|Platform:Dvo_Effects_Dvo_Fix|Platform:Dvo_Effects_Dvo_Print_Align}}
+
Older Versions :
 +
 
 +
* [[/Dvo_Effects_Dvo_Flicker_Pre-2014.2R1|2014.1 and older]]
 +
 
 +
 
 +
''DVO Flicker'' analyses the image sequence to remove brightness and chrominance fluctuations. These may be caused by varying exposure time, unsynchronized light sources, telecine transfer, aging film stock and/or film chemical related issues.
 +
 
 +
{{M-Note|Chrominance fluctuations are often termed ''chroma breathing''.}}
 +
 
 +
The tool settings have been split into :
 +
 
 +
* [[#general|General]] - common settings for overall flicker
 +
* [[#splice|Splice]] - for dedicated issues that can occur at scene cuts
 +
 
 +
<div id="general"></div>
 +
{{M-Heading1|General}}
 +
 
 +
The ''General'' page lists common settings for the flicker tool.
 +
 
 +
[[File:Dvo_flicker_all_general.png|thumb|1000px|none|DVO Flicker General main settings.]]
 +
 
 +
The ''Enable'' button enables the entire effect :
 +
 
 +
[[File:Dvo_flicker_enable.png]]
 +
 
 +
The main configuration consists of two processing options :
 +
 
 +
* ''Global'' - Analyses and process the whole image.
 +
* ''Local'' - Analyses and process invariants of local parts of the picture
 +
 
 +
{{M-Heading2|Colour Mode}}
 +
 
 +
[[File:dvo_flicker_colour_mode.png]]
 +
 
 +
Choose the colour mode we use for analysis and processing.
 +
 
 +
{| width="70%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|- style="vertical-align:top;"
 +
|align="right" width="20%"|'''RGB'''
 +
|Will find flicker in individual RGB colour channels (''chroma flicker''). '''DEFAULT'''
 +
|- style="vertical-align:top;"
 +
|align="right"|Luma
 +
|Analyse and process the ''luminance'' component only.
 +
|- style="vertical-align:top;"
 +
|align="right"|BW
 +
|Black and White. Uses the ''Green'' (G) channel to analyse and process. Also sets R,B channels to G.
 +
|- style="vertical-align:top;"
 +
|align="right"|RGB->BW
 +
|Convert RGB to Black and White before analysing and processing.
 +
|}
 +
 
 +
{{M-Note|The BW options are faster since they use one channel only.}}
 +
 
 +
{{M-Heading2|Temporal Window}}
 +
 
 +
[[file:dvo_flicker_temporal_window.png]]
 +
 
 +
''Temporal Window'' defines the number of frames to use for the analysis.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|1 3 5 7 9 11 13 15 ... 29 31
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|11
 +
|}
 +
 
 +
{{M-Heading2|Variation Control}}
 +
 
 +
[[file:dvo_flicker_variation_control.png]]
 +
 
 +
''Variation Control'' defines how controlled (or ''careful'') we are when we make adjustments.
 +
 
 +
{{M-Note|Higher values are '''more careful'''. Lower values allow for ''larger'' adjustments.}}
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0.00 - 1.00
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|0.50
 +
|}
 +
 
 +
{{M-Note|Lower values (allowing larger adjustments) are best for ''simple'' scenes. Larger settings may be required to take better account of more complex and dynamic scenes with more real-world intensity changes (e.g. high-speed pans).}}
 +
 
 +
{{M-Heading2|Max Adjust}}
 +
 
 +
[[file:dvo_flicker_max_adjust.png]]
 +
 
 +
This sets an adjustment limit to the ''General'' processing mode. The setting corresponds to absolute value.
 +
 
 +
'''Default:''' Disabled
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0 - 1023
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|64
 +
|}
 +
 
 +
 
 +
{{M-Heading2|Black Level Save}}
 +
 
 +
[[file:dvo_flicker_black_level_save.png]]
 +
 
 +
''Black Level Save'' lets us enable specific processing to preserve black levels in the sequence.
 +
 
 +
When ''Enabled'' (default), the ''Low'' and ''High'' parameters are used to assign the level of processing performed at the lower (blackest) end of the input sequence. Both ''Low'' and ''High'' are '''10 bit numbers''' and ''limited'' to values between 0 and 100 (out of the full 10 bit range, 1024).
 +
 
 +
'''Default:''' Enabled
 +
 
 +
{{M-Heading3|Low}}
 +
 
 +
If the input level is less than or equal to the setting for ''Low'', no flicker adjustment is performed and the input signal is untouched.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0 - 100
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|0
 +
|}
 +
 
 +
{{M-Heading3|High}}
 +
 
 +
If the input level is greater than or equal to the setting for ''High'', full flicker adjustment is performed.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0 - 100
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|1
 +
|}
 +
 
 +
{{M-Note|Between these values, there is a soft transition between none and full processing.}}
 +
 
 +
{{M-Heading2|Local}}
 +
 
 +
[[file:dvo_flicker_local.png]]
 +
 
 +
''Local'' enables local adaptive flicker processing.
 +
 
 +
'''Default:''' Enabled
 +
 
 +
{{M-Heading2|Aggressiveness}}
 +
 
 +
[[file:dvo_flicker_aggressiveness.png]]
 +
 
 +
''Aggressiveness'' defines how much Local mode processing to do.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|1 - 10
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|6
 +
|}
 +
 
 +
{{M-Heading2|Locality}}
 +
 
 +
[[file:dvo_flicker_locality.png]]
 +
 
 +
''Locality'' defines the size of the ''spatial variation'' of the intensity (i.e. area). A lower value will define a smaller region of intensity to be processed.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
| -5 - 5
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|0
 +
|}
 +
 
 +
{{M-Heading2|Feedback}}
 +
 
 +
[[file:dvo_flicker_feedback.png]]
 +
 
 +
''Feedback'' defines a ''temporal pipeline'' (i.e. frames) to enhance the process of the ''Local'' variation.
 +
 
 +
{{M-Note|In high motion sequences, ''Feedback'' may be lowered to decrease influence of other frames in the result.}}
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0 - 1.00
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|0.80
 +
|}
 +
 
 +
<div id="splice"></div>
 +
{{M-Heading1|Splice}}
 +
 
 +
The ''Splice'' settings manage intensity deviation that might occur at '''scene changes'''.
 +
 
 +
[[File:Dvo_flicker_all_splice.png|thumb|1000px|none|DVO Flicker Splice main settings.]]
 +
 
 +
{{M-Note|Early optical color timing had a tendency to be inexact (or less responsive). This could cause a darker image at the start of the scene.}}
 +
 
 +
{{M-Heading2|Splice Fix}}
 +
 
 +
[[file:dvo_flicker_splice_fix.png]]
 +
 
 +
'''Default:''' Disabled
 +
 
 +
Can be enabled for the start and end of a scene independently.
 +
 
 +
If ''Enabled'' the tool will perform a process pass that will force the intensity in the selected range to match its corresponding reference frame.
 +
 
 +
Frames Start / End set the '''reference frame''' and process range.
 +
 
 +
{| width="40%" cellpadding="5" border="1" style="border-collapse: collapse;"
 +
|align="right" width="30%"|'''Values'''
 +
|0 - 15
 +
|- style="vertical-align:top;"
 +
|align="right"|'''Default'''
 +
|8
 +
|}
 +
 
 +
{{M-Heading2|Global}}
 +
 
 +
[[file:dvo_flicker_splice_global.png]]
 +
 
 +
* See the [[#general|General]] section above.
 +
 
 +
{{M-Note|If you only need to fix ''Splice'' type flicker issues, then :
 +
* Disable ''General / Local''
 +
* Enable ''General / Global / Max Adjust''
 +
* Set ''General / Global / Max Adjust Limit'' to 0}}
 +
 
 +
{{Template:M-Navlinks-bottom|UM:Manual|UM:Dvo_Effects_Dvo_Fix|UM:Dvo_Effects_Dvo_Print_Align}}
  
 
</div>
 
</div>

Latest revision as of 16:28, 26 May 2017

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DVO Flicker
From Release : 2014.2

Older Versions :


DVO Flicker analyses the image sequence to remove brightness and chrominance fluctuations. These may be caused by varying exposure time, unsynchronized light sources, telecine transfer, aging film stock and/or film chemical related issues.

Chrominance fluctuations are often termed chroma breathing.

The tool settings have been split into :

  • General - common settings for overall flicker
  • Splice - for dedicated issues that can occur at scene cuts
General

The General page lists common settings for the flicker tool.

DVO Flicker General main settings.

The Enable button enables the entire effect :

Dvo flicker enable.png

The main configuration consists of two processing options :

  • Global - Analyses and process the whole image.
  • Local - Analyses and process invariants of local parts of the picture
Colour Mode

Dvo flicker colour mode.png

Choose the colour mode we use for analysis and processing.

RGB Will find flicker in individual RGB colour channels (chroma flicker). DEFAULT
Luma Analyse and process the luminance component only.
BW Black and White. Uses the Green (G) channel to analyse and process. Also sets R,B channels to G.
RGB->BW Convert RGB to Black and White before analysing and processing.

The BW options are faster since they use one channel only.

Temporal Window

Dvo flicker temporal window.png

Temporal Window defines the number of frames to use for the analysis.

Values 1 3 5 7 9 11 13 15 ... 29 31
Default 11
Variation Control

Dvo flicker variation control.png

Variation Control defines how controlled (or careful) we are when we make adjustments.

Higher values are more careful. Lower values allow for larger adjustments.

Values 0.00 - 1.00
Default 0.50

Lower values (allowing larger adjustments) are best for simple scenes. Larger settings may be required to take better account of more complex and dynamic scenes with more real-world intensity changes (e.g. high-speed pans).

Max Adjust

Dvo flicker max adjust.png

This sets an adjustment limit to the General processing mode. The setting corresponds to absolute value.

Default: Disabled

Values 0 - 1023
Default 64


Black Level Save

Dvo flicker black level save.png

Black Level Save lets us enable specific processing to preserve black levels in the sequence.

When Enabled (default), the Low and High parameters are used to assign the level of processing performed at the lower (blackest) end of the input sequence. Both Low and High are 10 bit numbers and limited to values between 0 and 100 (out of the full 10 bit range, 1024).

Default: Enabled

Low

If the input level is less than or equal to the setting for Low, no flicker adjustment is performed and the input signal is untouched.

Values 0 - 100
Default 0
High

If the input level is greater than or equal to the setting for High, full flicker adjustment is performed.

Values 0 - 100
Default 1

Between these values, there is a soft transition between none and full processing.

Local

Dvo flicker local.png

Local enables local adaptive flicker processing.

Default: Enabled

Aggressiveness

Dvo flicker aggressiveness.png

Aggressiveness defines how much Local mode processing to do.

Values 1 - 10
Default 6
Locality

Dvo flicker locality.png

Locality defines the size of the spatial variation of the intensity (i.e. area). A lower value will define a smaller region of intensity to be processed.

Values -5 - 5
Default 0
Feedback

Dvo flicker feedback.png

Feedback defines a temporal pipeline (i.e. frames) to enhance the process of the Local variation.

In high motion sequences, Feedback may be lowered to decrease influence of other frames in the result.

Values 0 - 1.00
Default 0.80
Splice

The Splice settings manage intensity deviation that might occur at scene changes.

DVO Flicker Splice main settings.

Early optical color timing had a tendency to be inexact (or less responsive). This could cause a darker image at the start of the scene.

Splice Fix

Dvo flicker splice fix.png

Default: Disabled

Can be enabled for the start and end of a scene independently.

If Enabled the tool will perform a process pass that will force the intensity in the selected range to match its corresponding reference frame.

Frames Start / End set the reference frame and process range.

Values 0 - 15
Default 8
Global

Dvo flicker splice global.png

If you only need to fix Splice type flicker issues, then :

  • Disable General / Local
  • Enable General / Global / Max Adjust
  • Set General / Global / Max Adjust Limit to 0

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