问题描述
我正在写一个电报机器人，该机器人从用户那里获取jpg并将其作为贴纸发送回去.我通过下载jpg，将文件的扩展名更改为png并上传并作为不干胶标签消息发回给用户的方式正确地做到了.如下图所示:
I'm writing a telegram bot that takes jpg from it's users and sends it back as stickers.I did this correctly by downloading jpg, change the extension of file to png and upload and send it back as a sticker message to the user. as shown below:
var file = await bot.GetFileAsync(update.Message.Photo.LastOrDefault()?.FileId);
var filename = file.FileId + "." + file.FilePath.Split('.').Last();
var pngFileName = filename.Split('.')[0] + ".png";
using (var saveImageStream = System.IO.File.Open(pngFileName, FileMode.Create))
{
await bot.DownloadFileAsync(file.FilePath, saveImageStream);
await bot.SendTextMessageAsync(update.Message.Chat.Id, "please wait...");
}
using (var stream = System.IO.File.Open(pngFileName, FileMode.Open))
{
await bot.SendStickerAsync(update.Message.Chat.Id, stream);
}
但是这些标签不会在IOS设备上的电报中加载，并且此代码仅适用于android上的电报用户.我试图只是将jpg文件的扩展名更改为webp，但没有用.
but the these stickers don't load in telegram on IOS devices and this code just works for telegram users on android. I tried to just changing the extension of jpg file to webp but it didn't work.
此后，我下载了标准电报贴纸，发现电报中贴纸的标准格式是webp文件.现在我想知道如何将收到的jpg文件转换为webp文件.
after that I downloaded the standard telegram stickers and found that the standard format of stickers in telegram is webp files.now I want to know how can I convert received jpg file to webp file.
我搜索了很多，只是找到此，找到了.
I searched alot and just find this , found here .
using (Image image = Image.FromFile("image.jpg"))
{
Bitmap bitmap = new Bitmap(image);
WebPFormat.SaveToFile("image.webp", bitmap);
}
我将其文件添加到我的项目中，并添加了使用LibwebpSharp;".在我的代码的顶部，但是当我添加它的示例代码时，VS无法找到"WebpFormat"类.
I added it's files to my project and I added "using LibwebpSharp;" at the top of my code, but when I add it's sample code, the VS cannot find "WebpFormat" class.
请帮助我并回答我的问题:如何在C#电报bot中将jpg转换为webp?" 谢谢
please help me and answer my question:"How can I convert jpg to webp in C# telegram bot?" thank you
推荐答案
以这种方式解决的问题
1)我安装了 Imazen.WebP nuget. 2)我从此处下载了32位dll，并将其添加到release文件夹中. 3)我添加了使用Imazen.WebP;在我的代码顶部4)我使用此代码将jpg转换为webp.
1) I installed Imazen.WebP nuget. 2) I downloaded the 32bit dll from here and added it to release folder. 3) I added "using Imazen.WebP;" in top of my code 4)I used this code to convert jpg to webp.
var file = await bot.GetFileAsync(update.Message.Photo.LastOrDefault()?.FileId);
var jpgFileName = file.FileId + ".jpg";
using (var saveImageStream = System.IO.File.Open(jpgFileName,FileMode.Create))
{
await bot.DownloadFileAsync(file.FilePath, saveImageStream);
await bot.SendTextMessageAsync(update.Message.Chat.Id, "please wait...");
}
var webpFileName = file.FileId + ".webp";
using (Bitmap bitmap = new Bitmap(jpgFileName))
{
using (var saveImageStream = System.IO.File.Open(webpFileName, FileMode.Create))
{
var encoder = new SimpleEncoder();
encoder.Encode(bitmap, saveImageStream, 20);
}
}
using (var stream = System.IO.File.Open(webpFileName, FileMode.Open))
{
await bot.SendStickerAsync(update.Message.Chat.Id, stream);
}
System.IO.File.Delete(jpgFileName);
System.IO.File.Delete(webpFileName);
它正常工作
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