You'll need to use the Reddit API to authenticate with Reddit, select the desired subreddit, and then upload the video file.
Follow the process:
Set up your environment
Install the necessary libraries for interacting with the Reddit API.
Create a Reddit developer application and obtain your API credentials (client ID, client secret, and user agent).
Authenticate with Reddit
Use your API credentials to authenticate with the Reddit API.
Select the Subreddit
Identify the subreddit where you want to upload your video. You'll need its name or ID.
Prepare the Video File
Ensure your video file is in a supported format and within Reddit's size and duration limits.
Upload the Video
Use the Reddit API to submit the video file to the selected subreddit.
Post the Video
Finalize the post by setting the title, tags, and other details.
RedditClient redditClient = new RedditClient(clientId, clientSecret, userAgent);
// Select the subreddit.
string subredditName = "your_subreddit_name";
var subreddit = redditClient.Subreddit(subredditName);
var videoFilePath = "/test.mp4";
using (FileStream fs = new FileStream(videoFilePath, FileMode.Open, FileAccess.Read))
{
// Upload the video.
await subreddit.Submit("Video Title", "Optional text", fs);
}