| | <<<Back 1 day (to 2018/11/16) | 20181117 |
| spaceguns1 | Could someone help me me troubleshoot a user error or a possible bug involving -sDevice=pngalpha? | 02:44.49 |
| | gswin64c -sDEVICE=pngalpha -sBATCH -sNOPAUSE -dBackgroundColor=16#ffffff -sOutputFile=output.png input.pdf | 02:45.09 |
| | ^^^ This works | 02:45.13 |
| | gswin64c -sDEVICE=pngalpha -sBATCH -sNOPAUSE -dBackgroundColor=16#ffffff -sPageList=1 -sOutputFile=output.png input.pdf | 02:45.20 |
| | ^^^ This results in a 0 byte png being generated | 02:45.30 |
| | I am trying to capture specific pages and the -sDEVICE=pngalpha fails to properly generate a file when I use any type of page range specifications | 02:46.41 |
| | will checkup tomorrow on the pngalpha bit | 05:31.22 |
| kens | spaceguns1 your command line works for me. | 08:58.46 |
| | However you haven't told us which version of Ghostscript you are using, nor given us the file to test with, so there could possibly be some diferennce there. | 08:59.20 |
| | Obviously I used a PDF file I happened to have to hand | 08:59.31 |
| | out.png | 08:59.43 |
| | pff wrong window | 08:59.53 |
| spaceguns1 | hey @kens this is using gs 9.25 and it is failing on all of my multi-page pdf files, single page ones with that command seem to render fine. | 14:19.07 |
| | https://drive.google.com/drive/folders/1QL0sdViVoEzZ3CuBjQmzm41-RX1kTtzd?usp=sharing example file and output I am getting | 14:21.41 |
| | just put a few different test files and the output in the shared link. Any pdf's of 1x page are processing fine, anything with 2x pages are getting 0 byte output files | 14:28.38 |
| kens | spaceguns1: Sorry was away from keyboard. Best time to catch someone here is office hours in Europe. | 15:32.40 |
| | I tried your file with current code and it works, but with the 9.25 release, 32 and 64-bit itGPFs | 15:33.01 |
| | Which of course results in a 0 byte output file, because the file is opened, but before anything is written to it the program crashes | 15:33.21 |
| | My guess is its this commit that fixed it: | 15:34.19 |
| | http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=e0b4f52ee1904ff3f1cf72d86163321b2f9d6357 | 15:34.19 |
| | Depending what you are trying to do you can use -dFirstPage and -DLastPage instead to produce a range of pages. Not ideal if you want many discontiuous pages because you would have to run the process multiple times. | 15:35.22 |
| | FWIW I believe this should be fixed in the forthcoming 9.26 release | 15:35.35 |
| | Oh the other solution of course is to always include the final page, then throw away that output file if you don't want it | 15:54.59 |
| spaceguns1 | @kens thanks much! I am just glad I wasn't crazy on this issue. I will play around with it later and see if I can get it to work with what I am trying to do/change my code flow on a thing if needed. The samples are 2x files, but I will be working on 100+ page files for this, hoping to process 1x page at a time, do what I need to with it, then delete the png to keep diskspace free. Appreciate you testing the code/test files | 16:43.13 |
| | to confirm the issue | 16:43.13 |
| kens | NP If you only want one page, then you can use FirstPage and LastPage to do the same thing | 16:43.47 |
| spaceguns1 | will test it out really quick | 16:44.07 |
| | this line look right? Still getting 0byte output files | 16:47.10 |
| | gswin64c -sDEVICE=pngalpha -sBATCH -sNOPAUSE -dBackgroundColor=16#ffffff -dFirstPage=1 -dLastPage=1 -sOutputFile=nmi_output.png nmi.pdf | 16:47.11 |
| kens | Should be, just a moment | 16:47.26 |
| | Nah that's crashing on the 9.25 code the same way | 16:48.32 |
| | Don't you get the GPF notification ? | 16:48.46 |
| spaceguns1 | no, not at my command line run | 16:49.07 |
| kens | Strange.... | 16:49.22 |
| spaceguns1 | apologies if I should be able to better debug, fairly new at gs | 16:49.23 |
| kens | Not debugging, just that windows normally pops up and says the applicatin encountered an error.... | 16:49.53 |
| | Looks like its the same problem as with the PageList | 16:50.04 |
| | Well, or something anyway.... | 16:50.25 |
| | If I try producing alll the pages it doesn't work either. | 16:50.46 |
| | You'll either need to wait for 9.26 or build GS form source yourself I'm afraid | 16:51.01 |
| spaceguns1 | no error feedback on my end for this one. I can take "broken will likely be fixed in 9.26" as an answer for now. Maybe find an assist with someone who can help me build from source. Thanks for the time looking into this with me | 16:51.37 |
| kens | You're on WIndows right ? | 16:51.54 |
| spaceguns1 | yes | 16:52.07 |
| kens | You need Visuald Studio, the community edition ios a free (but large download) | 16:52.21 |
| | Then you clone our git repository from here: | 16:52.42 |
| | http://git.ghostscript.com/?p=ghostpdl.git;a=summary | 16:52.42 |
| | open the solution file and select build | 16:52.51 |
| | You can also try the release candidate binaries | 16:52.59 |
| | If I can remember where they are.... | 16:53.08 |
| spaceguns1 | lol thank you. I will try that out later this afternoon and report back if I make progress on this | 16:53.27 |
| kens | RC1 binaries are ehere: | 16:54.06 |
| | https://github.com/ArtifexSoftware/ghostpdl-downloads/releases | 16:54.06 |
| | Got to go cook dinner, best of luck | 16:55.41 |
| spaceguns1 | That 9.26 update seems to have done the trick. Will run more extensive testing later. Thanks @kens | 22:07.16 |
| | Should I punch in a bug report somewhere or are we good to go with 9.26 already addressing the issue? | 22:08.15 |
| | Forward 1 day (to 2018/11/18)>>> | |
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