compression

问题 I have a web application(ruby on rails) that sends some YAML as the value of a hidden input field. Now I want to reduce the size of the text that is sent across to the browser. What is the most efficient form of lossless compression that would send across minimal data? I'm ok to incur additional cost of compression and decompression at the server side. 回答1: You could use the zlib implementation in the ruby core to in/de-flate data: require "zlib" data = "some long yaml string" * 100

问题 I have a bunch of files that come from some web requests, and some are gziped, i need to unpack them and print them as a string. This is the first time I try using golang, I tried some examples I found online but can't get it working. Here's the last test I was trying: package main import ( "bytes" "compress/gzip" "fmt" "io/ioutil" ) func main() { content := []byte{72,84,84,80,47,49,46,49,32,50,48,48,32,79,75,13,10,84,114,97,110,115,102,101,114,45,69,110,99,111,100,105,110,103,58,32,99,104

问题 I have work this for weeks, very hope for your help!!! please forgive my poor english. First, I think it's necessary to describe the Application Scenario: what data I want to decompress?---- the data is come from the network traffic of the internet . In these traffic, there are some data are compressed by gzip and store in the http or tcp packet, if the data size is huge and large than the maxlength of tcp payload, it will be sliced and transmiss. I can extract the compressed data from these

问题 I am trying to learn about run length encoding and I found this challenge online that I cant do. It requires you to write a compression function called compression(strg) that takes a binary string strg of length 64 as input and returns another binary string as output. The output binary string should be a run-length encoding of the input string. compression('1010101001010101101010100101010110101010010101011010101001010101') '1010101001010101*4' Here is what I have, but this does NOT find the

问题 I'm working on a ASP.Net website, and are currently optimizing it. I'm trying to enable dynamic content compression to it, but it won't work. I get Error 330 (net::ERR_CONTENT_DECODING_FAILED): Unknown error. On my development environment it works well. I've built the project in release mode I've added the dynamic content compression module, enabled dynamic content compression and checked that this is what i receive. I have an AWS EC2 server windows 2008 R2 with IIS installed. I've built the

问题 I want to compress all the pictures in excel workbook to email size pixel 96( ppi) by using command button with the following code. But it doesn't work to compress all pictures .It can only compress 1 picture. Sub test() Dim wsh As Worksheet Set wsh = Worksheets("Sheet1") wsh.Activate wsh.Shapes(1).Select SendKeys "%e", True SendKeys "~", True Application.CommandBars.ExecuteMso "PicturesCompress" End Sub 回答1: Try using a For Each loop to iterate through all shapes in the worksheet: Sub test()

问题 We use gifs for our blog extensively. We used to embed tenor nano gifs(90px height maintaining aspect ratio, used for GIF previews and shares on mobile) in it. Now we wanted to create our own gifs and are using the following command to convert mp4 to gif while maintaining the properties of tenor's nano gif. using ffmpeg version 4.1.4 But we observed a huge difference in size between the gif we created and the one created using tenor. ffmpeg -i input.mp4 -filter_complex "[0:v]fps=10,scale=-1

问题 I have a S3 bucket which has wide variety of files. Some of the files are of huge size like 8Gb, 11GB. Biggest one is of 14.6GB. I was searching for the way compress them. Obviously, i can download them locally and compress them and put it back in bucket. I thought its not good way to achieve it as i have to download the files first which is time consuming process. Is there any way in AWS cloud services itself using which i can compress the files directly and put them back in S3? One of the

问题 I built an app for my university where students can access documents such as notes, question papers etc. in PDF format. I am using Firebase Storage for the back-end. I want to compress the PDF files client side. I thought of using ilovepdf.com's API but i'm not able to do that. Is there anyway to do that in dart? any package in flutter? Would be great if someone could help. Thanks. 回答1: You can use any file compression method, not just those specific to PDF. You could use the archive package,

问题 So I'm working on extracting a file.cbz to display it's contents. I was hoping to go about it with the following code: println("7z x -y \"" + filePath + "\"" + s" -o$tempLocation") if (("7z x -y \"" + filePath + "\"" + s" -o$tempLocation").! == 0){ //I would have liked to do the whole thing with string interpolation, but I didn't work. Seems to be this bug https://issues.scala-lang.org/browse/SI-6476 Some(new File(tempLocation)) }else{ println("Something went wrong extracting the file,