stream.new | The repo for https : //stream.new | Video Utils library
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QUESTION
I'm trying to create some pdf pages on the fly and merging them using PDFBox PDFMergerUtility. Basically I've set of documents to be merged and now I want to add a cover page at the top with some dynamic text and image.
...ANSWER
Answered 2022-Mar-21 at 07:32You do
QUESTION
I'm trying to transcode a simple .mp4 file to HLS format and keep getting an error code 13 'Internal server error' from Google after a few minutes. I'm using the Java SDK. Who can help me find out what I'm doing wrong?
...ANSWER
Answered 2022-Jan-28 at 13:09Ok, answering my own question for anyone running into this problem in the future. The problem was in the IAM part. The bucket in which the result had to be written was in another project and the default service account created for the transcoder (which is conveniently hidden from the service accounts page!) has only access to buckets within the same project. So I had to add permissions for this service account to write to the bucket. A more describing error message would have been very helpful.
QUESTION
I'm working on PDF Toc. It generates the first page but when I have more elements I did logic to create a new page for TOC. I'm using PDF Box and that PDPageContentStream. I had to create a function to calculate how many pages I need. Then I'm creating the exact amount of pages in the list and add them to the PDF document before I start PDPageContentStream. That stream is in a loop and it's only generating the first page. Other pages come blank. I don't know what exactly is wrong. Here is the code:
...ANSWER
Answered 2021-Jul-30 at 09:08Page 2 sets the Y offset with this code because currentYPosition is not used when i > 0
QUESTION
My window should display the status of the video stream and the data sent and received in tcpip.
Every two seconds, the video appears to pause when writing and reading data on TCP/IP. How can we solve this phenomenon?
For your information, The application programs that deal with video stream, the stream look natural regardless of the tcpip I send and receive.
...ANSWER
Answered 2021-Jun-26 at 15:00Thread.Sleep
blocks the UI thread.
Not sure why exactly you have this for
loop, but it blocks the UI thread for at least 20 * 50 milliseconds, i.e. one second.
As a workaround, you may declare the Tick event handler async and use Task.Delay
instead. You may perhaps also use the async versions of the Write and Read methods:
QUESTION
I have next code in my project and time to time it falls with COSStream has been closed and cannot be read. Perhaps its enclosing PDDocument has been closed?
It happens in different time and with different workload, so I want to fix it.
Thanks in advance.
ANSWER
Answered 2021-Apr-19 at 20:19You use streams from template documents (templatePDDocument
, fontTemplatePdf
) created anew and also given free for garbage collection in each loop iteration. Thus, some of these template documents may have been finalized by garbage collection before you call outPDDocument.save
, causing the errors you observe.
If you keep this base architecture, you can prevent that those template documents are finalized prematurely by adding them all to some collection and clearing that collection only after calling outPDDocument.save
.
Alternatively you can switch to cloning the template pages and using the clones instead of using the original template pages.
QUESTION
Yes, it seems a weird question, but I was not able to render a colored text in PDFBox.
Usually the code for generating text looks like that:
...ANSWER
Answered 2021-Feb-11 at 16:27You use
QUESTION
I've seen many answers here, I copied some examples and tried applying it, but I don't know how to make this work. I'm trying to create a file with PDFBox and sending it with a Response so the user can download it. So far, I'm able to download the file, but it is blank. I already tried just loading an example file from my computer with PDFBox and downloading it, but it comes the same way, blank. The code I am working with now is:
...ANSWER
Answered 2020-Aug-21 at 21:54With the Testcode below you can verify that your Sourcecode for PDF generation works in general.
But the positioning of the second Textelement is out of the Viewport.
Looks like your problem is related to the Webframework. You might give more details about this for further advice.
pom.xml
QUESTION
I'm trying to create a PDF document using Apache PDFBox 2.0.18, then print it.
Everything works fine, but when printing I receive a lot of warning events:
...ANSWER
Answered 2020-Jun-18 at 17:57You should save the file you created before printing it, and reload it for printing. The problem is happening here because the font subsetting is done when saving.
QUESTION
I'm using Apache PDFBox version 2.0.16 to add paging to an existing PDF file. My method is working great, the generated PDF is fine. However, when I open the file with Adobe Acrobat Reader, if I try to close the file, it prompts an alert asking me if I want to save the file even though I haven't edited anything, and the file is not editable at first. I can't manage to understand what's happening, and how to prevent it from prompting saving
My code is the following :
...ANSWER
Answered 2020-May-14 at 15:19reset 'os' before saving, so that your ByteArrayOutputStream
gets cleared and positioned at the beginning.
QUESTION
I'm testing PDFBox and I've a doubt writing a new document..
The following code writes 75 lines in a pdf file. The height of the file isn't enough. So I'd need to know when the contentStream reaches the end of page in order to create a new one and continue writing lines.
Any way to solve my question?
Thank you so much!
...ANSWER
Answered 2020-Apr-27 at 04:27Substract the leading value (30.5f) from initPosY in your loop after calling newLine(). When it is < 0, or below a useful value (e.g. 50 which is your top margin), then you should start a new page.
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