Error Reading Pixel Data From Image File
Today's Posts View Site Leaders News Job Lot The Pad Tools Gallery Reels Groups What's New? Advanced Search Forum Applications & Tools Compositing & VFX NUKE from The Foundry problem reading exr files : No frame buffer specified If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 4 of 4 Thread: problem reading exr files : No frame buffer specified Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode March 20th, 2011,08:52 AM #1 metaclay View Profile View Forum Posts Certified User Join Date Oct 2008 Posts 269 problem reading exr files : No frame buffer specified Hi , anyone have this kind of problem? I searched this fourm and it seems to be no one has this kind of error. It's wierd .... sometimes when reading .exr file, quite often i got this message : error reading pixel data from image file "/Volumes/...../data.0050.exr" . No frame buffer specified as pixel data destination? So if i scrub the timeline, at somepoint i got that error. At some frames in my clip, the viewer just turn blank. what's that mean? is it a bug? or something wrong with my .exr ? sometimes if i scrub timeline couple of time, it's back to normal, but mostly i doesn't. Re-open the file always fix it automatically , but then it shows up again. Anyone got any idea? other seq format like .tga/tif etc. has no problem at all. How can i fix it? btw it's 6.2v2. Did i miss something? thanx. Reply With Quote March 21st, 2011,06:29 AM #2 pixelranger View Profile View Forum Posts Visit Homepage Registered Abuser Join Date Jul 2010 Location London Posts 23 Sounds like a Nuke bug. Never seen it though... I usually render all my passes to seperate image sequences (with the output image prefix set to %s/%l/ and also with the buffer naming set to 'Custom' and so the render outputs specular.####.exr, diffuse.####.exr etc instead of the loooong automatic name. Then the passes just need to be shuffled into rgb and are easy to manage in Nuke.) -Not necessarily 'THE' solution, but certainly 'A' solution, or a way of rendering the passes in a more managable way. As for the random blank frames - again, I have no idea... Sounds like a bug blog ----------- portfolio ---------- linkedIn Reply With Quote November 11th, 2011,07:28 AM #3 metaclay View Profile View Forum Posts Certified User Join Date Oct 2008 Posts 269 Hi, This is my
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am Hi GuyNeed some help! I try to use 3delight default shadow pass, but I always got black image at photoshop or nuke?No idea why and how to get correct shadow pass?I have http://www.3delight.com/en/modules/forum/viewtopic.php?t=3779 checked Generate Shadow Maps, even set output file for Shadow Map. Also, check Use Ray https://lists.blender.org/pipermail/bf-committers/2014-January/042676.html Trace Shadows for lightBut still got nothing??Thanks in advanceBenny Top jmxd Member Posts: 104 Joined: Mon Apr 14, 2008 5:22 am Contact: Contact jmxd Website Quote Postby jmxd » Sun Mar 10, 2013 9:10 am Hi Benny,Check Alpha of your image, shadow information shuld be in Top BENNY HO Member Posts: 48 Joined: Wed Feb 20, 2013 2:35 am Quote Postby BENNY error reading HO » Sun Mar 10, 2013 12:37 pm Hi jmxdThanks for your reply!I try to check again, but sorry I open file at photoshop or nuke. For nuke, I just switch rgba to alpha at left up area. it is black, haha.Can you kindly let me know how to see alpha at nuke and photoshop?Also, I want to ask one questionI want to use multi channel exr file, but I don't know how to write output path??default: error reading pixel 3delight//image/___#.I want to use one file name "skin" including all of pass? How to set up? I fail many timesIf I want to save file at Desktop, bro, how to write output path??Thanks hahaBenny Top jmxd Member Posts: 104 Joined: Mon Apr 14, 2008 5:22 am Contact: Contact jmxd Website Quote Postby jmxd » Sun Mar 10, 2013 1:37 pm in photoshop you can see alpha in the "channels" window it is the fourth channel under the blue one, if you have only 3 channels(except RVB) that mean you have no alpha channel (but if your file is exr photoshop will not be abble to read it correctly)(see also below post)now for EXR naming take a look there: (there is a search box at the top right of the forum> very usefull)http://www.3delight.com/en/modules/PunB ... hp?id=3727 Top BENNY HO Member Posts: 48 Joined: Wed Feb 20, 2013 2:35 am Quote Postby BENNY HO » Mon Mar 11, 2013 9:24 am Hi jmxdThanks for your help.I got free Openexr plug in, but I still have problems:I save my 3delight scene at two exr filesa. C:/Users/user/Desktop/skin_ibl21/skin.exr for all of passes (layered)b. C:/Users/user/Desktop/skin_ibl21/skin_rgba.exr only for one pass of rgba (only one)At photoshop, I got openexr interface and then I can see apha at skin_rgba.exr I failed to import skin.exr (layered). At photoshop, all of passes became transparent. I can see pass name at layer but
rendering engine - problem reading EXR file Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] Hi everybody! My name is Jonas Eschenburg and I'm a software developer living in Augsburg, Germany. I am currently developing "BitWrk", an open marketplace for on-demand computing power. Blender is an important use case for my project as, in my opinion, it could benefit heavily from having an open renderfarm, grid-like service. If you're interested, please have a look at I have begun writing integration code using Blender's Python scripting interface and so far, everything has been a nice experience. There is one problem I haven't yet managed to solve, though. I seem to be unable to load renderings (.exr files) produced by Blender back into the render result. The render result image stays empty. Here is the Python script I used (execute, select "Dummy rendering", hit F12): ------------------------------------------------------------ import bpy class DummyRenderEngine(bpy.types.RenderEngine): """Dummy Rendering Engine""" bl_idname = "DUMMY_RENDER" bl_label = "Dummy rendering" def render(self, scene): result = self.begin_result(0,0,320,200) result.load_from_file("/tmp/example.exr") self.end_result(result) def register(): bpy.utils.register_class(DummyRenderEngine) def unregister(): bpy.utils.unregister_class(DummyRenderEngine) if __name__ == "__main__": register() ------------------------------------------------------------ Here is what the console says: ------------------------------------------------------------ IMB_exrtile_set_channel error RenderLayer.Combined.R IMB_exrtile_set_channel error RenderLayer.Combined.G IMB_exrtile_set_channel error RenderLayer.Combined.B IMB_exrtile_set_channel error RenderLayer.Combined.A IMB_exrtile_set_channel error RenderLayer.Depth.Z warning, channel with no rect set A warning, channel with no rect set B warning, channel with no rect set G warning, channel with no rect set R warning, channel with no rect set Z OpenEXR-readPixels: ERROR: Error reading pixel data from image file "/tmp/example.exr". No frame buffer specified as pixel data destination. ------------------------------------------------------------ Here is some information about the EXR file I used, generated by exrheader: ------------------------------------------------------------ file format version: 2, flags 0x0 Camera (type string): "Camera" Date (type string): "2014/01/19 18:42:29" File (type string): "/var/folders/1y/jvd5p46x5z70cdlz3f4tk7880000gn/T/tmplg5y08/input.blend" Frame (type string): "34" RenderTime (type string): "01:11.83" Scene (type string): "Scene" Time (type string): "00:00:01.10" channels