<br><br><div class="gmail_quote">2010/8/5 Sasha Koruga <span dir="ltr"><<a href="mailto:skoruga@gmail.com">skoruga@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
I would be interested in wrting a sharpening shader, but there are<br>
just some questions I have first:<br>
1) Which sharpening algorithm should I use? (could allow mulitple<br>
algorithms, but still would like names of good ones for video)<br></blockquote><div><br></div><div>Problem is that some cheaper cards cannot do better algos real time for HD videos. I would guess MSharpen and asharp are few filters that people would want to see. </div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
2) Does VLC already do some sharpening automatically? If so, would<br>
that need to be disabled first?<br></blockquote><div><br></div><div>AFAIK there isn't any post processing done by default.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
3) Does VLC already have any sharpening option?<br></blockquote><div><br></div><div>sharpen-sigma</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>
Upscaling filter is a good suggestion. If there is any particular<br>
algorithm that people recommend, I'd love to know.<br>
<br>
I definitely plan to continue working on colorspace conversions, but I<br>
need to figure out how to efficiently transfer the raw YUV data to a<br>
D3D texture first (creating a dynamic texture and memory copying the<br>
data into there was too slow). Still looking for advice there! ^_^<br>
<br>
Regards,<br>
<font color="#888888">Sasha<br>
</font><div><div></div><div class="h5"><br>
On Thu, Aug 5, 2010 at 7:48 AM, Geoffroy Couprie <<a href="mailto:geo.couprie@gmail.com">geo.couprie@gmail.com</a>> wrote:<br>
> On Thu, Aug 5, 2010 at 1:34 PM, Jean-Baptiste Kempf <<a href="mailto:jb@videolan.org">jb@videolan.org</a>> wrote:<br>
>> On Thu, Aug 05, 2010 at 01:31:51PM +0200, Rémi Duraffort wrote :<br>
>>> > Oh, and also, I'd like to know if anyone has any special shader<br>
>>> > requests. Currently I have a 16-235 -> 0-255 shader, a grayscale<br>
>>> > shader, an invert shader, a BT.601->BT.709 shader, and I'm still<br>
>>> > working on the YUV->RGB and other image conversion shaders. I know<br>
>>> > MPC-HC has a lot of shaders, but after checking them out, I realized<br>
>>> > that most of them are completely useless and serve no purpose (e.g. a<br>
>>> > circle that bounces around while the video is playing). Maybe I'm<br>
>>> > missing the purpose of some of them (e.g. night vision shader -<br>
>>> > brightens, blurs, and makes stuff green), and in such a case, please<br>
>>> > let me know if you think a case exists where someone would actually<br>
>>> > want to enable such a shader.<br>
>>> Shaders for chroma conversion are the most usefull ones. The others are<br>
>>> only for fun IMHO (nothing usefull).<br>
>><br>
>> Shaders for colourspaces translation are useful.<br>
>><br>
><br>
> Sharpening, upscaling filters?<br>
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