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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0001500||Kdenlive||Rendering||public||2010-03-11 00:42||2011-06-20 23:05|
|Platform||32 bit intel and alike||OS||openSuse||OS Version||11.3|
|Target Version||Fixed in Version|
|Summary||0001500: SVG Does Not Render Propely|
|Description||Kdenlive is not rendering SVG files with anti-aliasing. Edges on objects have jaggies.|
|Steps To Reproduce||Create a SVG file in Inkscape.|
Insert in Kdenlive project.
|Additional Information||A screen shot of the rendered video is provided.|
The original SVG file is also provided.
Until this is resolved, I will have to export the SVG files as a bitmap.
|Tags||No tags attached.|
|Build/Install Method||Distribution package|
|Attached Files|| Art-Imaginär-1.png [^] (36,982 bytes) 2010-03-11 00:42
FV-MPP-01.svg.zip [^] (8,453 bytes) 2010-03-11 00:56
FV-title.01.svg.zip [^] (8,572 bytes) 2010-03-11 00:57
End-Credits-Text.svg.zip [^] (2,370 bytes) 2011-06-20 21:02
I have identified the issue.
FV-MPP-01.svg does not have "background". The SVG text / objects have nothing behind them. The document properties define the background as black. The text / objects do NOT render with anti-aliasing.
FV-title.01.svg however uses a black object behind the text / objects to provide the black background. The text / objects DO render with anti-aliasing.
When the text / objects in file FV-MPP-01.svg are provided with a background object, as in FV-title.01.svg, the text / objects now render with anti-aliasing.
|If you want anti-aliasing to work with a image having a transparent background you have to add a composite transition.|
ttill what I wrote was, the image has a background colour defined. If you actually open the SVG in something like Inkscape you will see what I mean.
As for the "use a composite transition" sticky tape solution, I have already posted about this. Other users also agree. Why should I have to use a transition to use an alpha transparency? Every other graphic program understands that objects or layers with alpha transparency stacked above others, allow them to show through... without any special modes or transitions being set.
The current way Kdenlive treats this is broken. Consider this, what if I have a clip with alpha but want to layer it over multiple clips? I can't, the transition only allows to one clip, plus, it does not allow transition stacking. If any of the other tracks below have a transition applied, the composite won't work.
If I import a bog standard SVG file, I don't expect to have use a cludge to use it. Other programs understand the file and display it correctly.
ttill, it seems we have already discussed the issue of alpha transparency.
Well, I fully agree with you.
I just wanted to point out a temporary solution.
Sadly I don't have enough time to work on this issue.
|Libraries are used to render the SVG (librsvg if installed or Qt otherwise). I suppose these do not understand the background color and gives us an alpha channel. (Not commenting on the need for composite.)|
A new issue with SVG rendering.
Kdenlive incorrectly renders right aligned text.
.svg file attached.
Add file to a Kdenlive project, open file in Inkscape and compare. Inkscape of course renders correctly.
Re: Kdenlive incorrectly renders right aligned text.
Kdenlive does not directly render SVG. librsvg via gdk-pixbuf or QtSvg via QImage renders SVG. This is not under our control.
|2010-03-11 00:42||neoarttec||New Issue|
|2010-03-11 00:42||neoarttec||File Added: Art-Imaginär-1.png|
|2010-03-11 00:56||neoarttec||File Added: FV-MPP-01.svg.zip|
|2010-03-11 00:57||neoarttec||File Added: FV-title.01.svg.zip|
|2010-03-11 01:13||neoarttec||Note Added: 0004805|
|2010-03-12 15:08||ttill||Note Added: 0004813|
|2010-03-17 00:53||neoarttec||Note Added: 0004832|
|2010-03-17 00:55||neoarttec||Note Added: 0004833|
|2010-03-17 17:36||ttill||Note Added: 0004834|
|2010-05-01 08:44||ddennedy||Relationship added||has duplicate 0001485|
|2010-05-01 08:49||ddennedy||Relationship added||has duplicate 0001456|
|2011-02-08 08:46||ddennedy||Note Added: 0006396|
|2011-06-20 21:02||neoarttec||File Added: End-Credits-Text.svg.zip|
|2011-06-20 21:04||neoarttec||Note Added: 0006926|
|2011-06-20 23:05||ddennedy||Note Added: 0006930|
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