encoding | 易学教程

How do you get FFMPEG to encode with vaapi?

阅读更多关于 How do you get FFMPEG to encode with vaapi?

问题 I've seen various examples of using libavcodec with vaapi to accelerated decoding, but how do you use it to accelerate encoding? 回答1: As of today, FFmpeg and libav have implemented hardware-accelerated encoding via VAAPI on supported platforms and hardware SKUs, and I have written a write-up on the same that will enable you to set up, deploy and use both ffmpeg and libav to achieve the same effect. And in the same note, I've added references to hardware surface limits so you'll know what

Pandas get dummies() for numeric categorical data

阅读更多关于 Pandas get dummies() for numeric categorical data

问题 I have 2 columns: Sex (with categorical values of type string as 'male' and 'female') Class (with categorical values of type integer as 1 to 10) When I execute pd.get_dummies() on the above 2 columns, only 'Sex' is getting encoded into 2 columns. But 'Class' is not converted by get_dummies function. I want 'Class' to be converted into 10 dummy columns as well, similar to One Hot Encoding. Is this expected behavior? Is there an workaround? 回答1: You can convert values to strings: df1 = pd.get

Powershell and german umlauts in git branch names

阅读更多关于 Powershell and german umlauts in git branch names

问题 I have written a batch file which uses a powershell command to delete all local git branches except one to keep. If there are german umlauts used in branch names, it does not work. Switched to branch 'master' Your branch is up-to-date with 'origin/master'. Deleted branch DEV_API_StartenDesWorkers (was 61bec6d883b). error: branch 'DEV_â”œÂ£ersicht_Drucken' not found. error: branch 'test_prâ”œâ•�fung' not found. The correct names are DEV_Übersicht_drucken and test_prüfung . How can I achieve to

Powershell and german umlauts in git branch names

阅读更多关于 Powershell and german umlauts in git branch names

Powershell and german umlauts in git branch names

阅读更多关于 Powershell and german umlauts in git branch names

JNI中jstring 与 const char* 相互转换函数

阅读更多关于 JNI中jstring 与 const char* 相互转换函数

在平时的工作，经常用到jni和const类型转换。 //将const char类型转换成jstring类型 jstring CStr2Jstring( JNIEnv* env, const char* pat ) { //定义java String类 strClass jclass strClass = (env)->FindClass("Ljava/lang/String;"); //获取java String类方法String(byte[],String)的构造器,用于将本地byte[]数组转换为一个新String jmethodID ctorID = (env)->GetMethodID(strClass, "<init>", "([BLjava/lang/String;)V"); //建立byte数组 jbyteArray bytes = (env)->NewByteArray((jsize)strlen(pat)); //将char* 转换为byte数组 (env)->SetByteArrayRegion(bytes, 0, (jsize)strlen(pat), (jbyte*)pat); //设置String, 保存语言类型,用于byte数组转换至String时的参数 jstring encoding = (env)->NewStringUTF("GB2312");

Corrupt file when using Azure Functions External File binding

阅读更多关于 Corrupt file when using Azure Functions External File binding

问题 I'm running a very simple ExternalFileTrigger scenario in Azure Functions were I copy one created image file from one onedrive directory to another. function.json { "bindings": [ { "type": "apiHubFileTrigger", "name": "input", "direction": "in", "path": "Bilder/Org/{name}", "connection": "onedrive_ONEDRIVE" }, { "type": "apiHubFile", "name": "$return", "direction": "out", "path": "Bilder/Minimized/{name}", "connection": "onedrive_ONEDRIVE" } ], "disabled": false } run.csx using System; public

How to properly encode UTF-8 txt files for R topic model

阅读更多关于 How to properly encode UTF-8 txt files for R topic model

问题 Similar issues have been discussed on this forum (e.g. here and here), but I have not found the one that solves my problem, so I apologize for a seemingly similar question. I have a set of .txt files with UTF-8 encoding (see the screenshot). I am trying to run a topic model in R using tm package. However, despite using encoding = "UTF-8" when creating the corpus, I get obvious problems with encoding. For instance, I get < U+FB01 >scal instead of fiscal , in< U+FB02>uenc instead of influence ,

Perl + Curses: Expecting a UTF-8 encoded multibyte character from getchar(), but not getting any

阅读更多关于 Perl + Curses: Expecting a UTF-8 encoded multibyte character from getchar(), but not getting any

问题 I am trying out Bryan Henderson's Perl interface to the ncurses library: Curses For a simple exercise, I try to obtain single characters typed on-screen. This is directly based off the NCURSES Programming HOWTO, with adaptations. When I call the Perl library's getchar() , I expect to receive a character, possibly multibyte (It's a bit more complicated as explained in this part of the library manpage because one has to handle the special cases of function keys and no input, but that's just the

How do I handle character encoding for stdout stream of (cli) output in/from node.js?

阅读更多关于 How do I handle character encoding for stdout stream of (cli) output in/from node.js?

问题 I am confused about how to safely store and read the process.stdout output in Node.js: Is the CLI output of console.log() (and such) done in a specific character encoding? Or is it raw binary of unspecified form? Can there be binary data? (I have no idea) Node.js is very utf8 oriented, but then JS is UCS2 and I have no idea what the stream does with it. And related: is it safe to apply a string-diff to the stream if I convert the Buffer to String in utf8 (the default)? Note my diff renderer