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Rikin Patel 2025-08-11 20:13:55 +02:00 committed by GitHub
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EXAMPLES.md
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@ -224,6 +224,48 @@ var inputFile = await client.UploadFileAsync(Filepath);
await client.SendMediaAsync(peer, "Here is the photo", inputFile);
```
<a name="upload-video-thumbnail"></a>
## Upload a video with custom thumbnail
```csharp
const string videoPath = @"C:\...\video.mp4";
const string thumbnailPath = @"C:\...\thumbnail.jpg";
var chats = await client.Messages_GetAllChats();
InputPeer peer = chats.chats[1234567890]; // the chat we want
// Extract video information using FFMpegCore or similar library
var mediaInfo = await FFmpeg.GetMediaInfo(videoPath);
var videoStream = mediaInfo.VideoStreams.FirstOrDefault();
int width = videoStream?.Width ?? 0;
int height = videoStream?.Height ?? 0;
int duration = (int)(mediaInfo.Duration.TotalSeconds);
// Upload both video file and thumbnail
var inputFile = await client.UploadFileAsync(videoPath);
var inputThumb = await client.UploadFileAsync(thumbnailPath);
// Create video media with thumbnail and attributes
var media = new InputMediaUploadedDocument
{
file = inputFile,
thumb = inputThumb,
mime_type = "video/mp4",
attributes = new DocumentAttribute[] {
new DocumentAttributeVideo {
w = width,
h = height,
duration = duration,
flags = DocumentAttributeVideo.Flags.supports_streaming
},
new DocumentAttributeFilename { file_name = Path.GetFileName(videoPath) }
},
flags = InputMediaUploadedDocument.Flags.has_thumb
};
await client.SendMessageAsync(peer, Path.GetFileName(videoPath), media);
```
*Note: This example requires FFMpegCore NuGet package for video metadata extraction. You can also manually set width, height, and duration if you know the video properties.*
<a name="album"></a>
## Send a grouped media album using photos from various sources
```csharp