# PVRTexLib transcoding results in artifacts in texture.

**URL:** <https://forums.imgtec.com/t/pvrtexlib-transcoding-results-in-artifacts-in-texture/2138>\
**Category:** PowerVR Insider\
**Tags:** pvrtextool\
**Created:** [August 5, 2014, 12:02am UTC](https://forums.imgtec.com/t/pvrtexlib-transcoding-results-in-artifacts-in-texture/2138 "2014-08-05T00:02:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![julezz-2](https://avatars.discourse-cdn.com/v4/letter/j/5daacb/32.png) [@julezz-2](https://forums.imgtec.com/u/julezz-2)\
**Post date:** [August 5, 2014, 12:02am UTC](https://forums.imgtec.com/t/pvrtexlib-transcoding-results-in-artifacts-in-texture/2138/1 "2014-08-05T00:02:27Z")

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Hi guys!  
  
  
  
I have an issue where transcoding an texture using pvrtexture::Transcode and saving it out with the premultiplied header flag enabled. I get a column of pixels, 8 pixels high, at the edge of the texture. I’ve attached a screenshot of it in the PVRTexTool.  
  
  
  
 ![](http://i58.tinypic.com/i50mtl.png)  
  
  
  
I am transcoding it to the pvrtc\_4bpp\_rgba format and the artefacts only show when I am using high or best quality. (Does not happen in normal quality).  
  
  
  
I am using:  
  
PVR SDK 3.3, revision 2.  
  
  
  
Appreciate any insight into this. Thanks!  
  
  
  
Julezz

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**Author:** ![JoeDavis](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.imgtec.com/joedavis/32/71_2.png) [@JoeDavis](https://forums.imgtec.com/u/JoeDavis)\
**Post date:** [August 6, 2014, 9:55am UTC](https://forums.imgtec.com/t/pvrtexlib-transcoding-results-in-artifacts-in-texture/2138/2 "2014-08-06T09:55:28Z")

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Hi Julezz,  
  
  
  
The PVRTexTool lead is out of the office this week. He should be able to discuss the issue with you once he returns.  
  
  
  
If you create [a bug report](https://pvrsupport.imgtec.com/feedback) and attach the input image to it, it should help speed up our investigation (and it gives visibility of progress to other developers).  
  
  
  
Thanks,  
  
Joe