moontan77 Wrote:anyone have a linux script for converting all posters/thumbnails/fanart (.tbn) to .dds? i.e. one that checks all the folders in the Thumbnails folder.

if anyone could modify this script posted earlier in the thread so that it looks in all folders within the Thumbnails folder. It would be appreciated!

#!/bin/sh
cd ~/.xbmc/userdata/Thumbnails/Video/Fanart/ || exit
find . -name '*.tbn' -or -name '*.dds' | cut -c-10 | sort | uniq -u |
while read n; do
mv $n.tbn $n.jpg
nvcompress -bc1 $n.jpg | awk '/taken:/{printf $3}'
mv $n.jpg $n.tbn
echo "s $(ls *.dds | wc -l)/$(ls *.tbn | wc -l)"
done

jmarshall Wrote:Note that as of r28714, XBMC will create .dds versions (indiscriminately) of .tbn files at viewing time if you use the <useddsfanart> advancedsetting.

Note that in some cases the DDS version may not be suitable due to quality being too poor. We need to identify a good benchmark for this so that we can have quality (at the expense of extra load time) where we need it.

If you find images the produce bad looking DDS equivalents, please make a note of them. I'll add some logging to dump out the error, so to work out the error that XBMC sees, just remove the .dds file and have XBMC regenerate it, then look in the log for the dds error.

Cheers,
Jonathan

jmarshall Wrote:Note that as of r28714, XBMC will create .dds versions (indiscriminately) of .tbn files at viewing time if you use the <useddsfanart> advancedsetting.

Cheers,
Jonathan

.:B:. Wrote:Sounds great .

I just build 28744 now, gonna activate the DDS setting and report back with any problems.

jmarshall Wrote:Note that as of r28714, XBMC will create .dds versions (indiscriminately) of .tbn files at viewing time if you use the <useddsfanart> advancedsetting.

jmarshall Wrote:Note that as of r28714, XBMC will create .dds versions (indiscriminately) of .tbn files at viewing time if you use the <useddsfanart> advancedsetting.

Note that in some cases the DDS version may not be suitable due to quality being too poor. We need to identify a good benchmark for this so that we can have quality (at the expense of extra load time) where we need it.

If you find images the produce bad looking DDS equivalents, please make a note of them. I'll add some logging to dump out the error, so to work out the error that XBMC sees, just remove the .dds file and have XBMC regenerate it, then look in the log for the dds error.

Cheers,
Jonathan

jmarshall Wrote:DXT3/5 == DXT1 if you have no alpha channel. Just twice as large. Unless, ofcourse, the hardware is doing something funny. nVidia used to have a nasty bug in early GeForce hardware in their DXT1 path for instance, but that's long gone now.

The best format for colour-only is DXT5-YCoCg, but that requires shaders at runtime, which *may* not be as easy as it sounds. Reason is we have at least 2 textures to render, one or both of which may be DXT5-YCoCg. Obviously I'll be looking into that long-term, but for now we're stuck with DXT1 or uncompressed.

The key step is to develop a reasonable metric for figuring out when to try something other than DXT1. This is easy if it's just alpha or no alpha, but hard if we add in DXT5-YCoCg or uncompressed into the mix.

I have a metric that works well for my images - I'll be adding that to SVN shortly. This needs testing. EDIT: r28782 has the change.

The best way to test it out is to remove all your .dds fanart images, restart XBMC and go one by one through your movies while the .dds generates, making a note of any images that don't look all that good. It'll pay to keep a running list of good/bad/good/good etc. so that you can easily compare with the error values XBMC calculates. Then, grab the log file and dump out all the DDS error lines. Compare which ones are good vs bad with the error values you get. Hopefully we can find a decent cut-off value for trying something other than DXT1.

Cheers,
Jonathan

needtotest Wrote:ok updated to the r28782 - set the setting in the advanced settings file and started xbmc (right after I deleted the cache). Xbmc started to make screen dumps of the movies in the movie library - I did not want that so I exited xbmc. Deleted my movie library so that I could import it from new - one problem though I cant scan for new content in this version! I cant set content either since the content list is empty.

So what do I do now?