TweetInvi does not retrieve tweet's picture

Question

I'm reading tweets using the following code, it works fine but the media object is always empty even if the tweet has a picture but it works fine if the tweet has a video instead of picture!

            var stream = userClient.Streams.CreateFilteredStream();
            stream.TweetMode = Tweetinvi.TweetMode.Extended;
            var twitterUser = await userClient.Users.GetUserAsync(username);
            stream.AddFollow(twitterUser);
            stream.MatchingTweetReceived += (sender, eventReceived) =>
            {
                
                if(!eventReceived.Tweet.Retweeted)
                    Console.WriteLine(eventReceived.Tweet);
            };

            await stream.StartMatchingAllConditionsAsync();

I was debugging every tweets and verify that each one has a picture in twitter website.

Answer 1

The Media member of ITweet is a List<IMediaEntity>. It's possible for this list to be empty. Using the below code, I was able to receive tweets with their Media member containing IMediaEntity objects:

static async Task Main(string[] args)
{
    Task task = Task.Run(() => BeginTweetStream());
    await task;
}

public static async Task BeginTweetStream()
{
    string userName = "SomeName";
    int i = 0;
    TwitterClient userClient = new TwitterClient("string", "string", "string", "string"); //where the strings are credentials
    var stream = userClient.Streams.CreateFilteredStream();
    stream.TweetMode = Tweetinvi.TweetMode.Extended;
    var twitterUser = await userClient.Users.GetUserAsync(userName);
    stream.AddTrack("SomeTrack");
    stream.MatchingTweetReceived += (sender, eventReceived) =>
    {
        if (eventReceived.Tweet.Media != null && eventReceived.Tweet.Media.Any() && !eventReceived.Tweet.Retweeted)
        {
            Console.WriteLine($"Tweet with {eventReceived.Tweet.Media.Count()} media found!");

            foreach (Tweetinvi.Models.Entities.IMediaEntity media in eventReceived.Tweet.Media)
            {
                Console.WriteLine($"Media type: {media.MediaType} Link: {media.URL}");
            }

            ++i;
        }

        if (i == 99) //stop after 100 tweets with media
        {
            stream.Stop();
            Console.WriteLine("Complete! Press any key to exit.");
            Console.Read(); 
        }
    };

    await stream.StartMatchingAllConditionsAsync();
}

Console Output:

You can check the IMediaEntity.MediaType member to see what kind of media it is. I haven't been able to find documentation of what values this can be set to, but so far, I've seen:

• photo
• video
• animated_gif

Note that the URL member of the IMediaEntity object is the link to the tweet itself. If you are after the picture itself, MediaURL or MediaURLHttps will contain the link to only the picture (for videos and animated GIFs, these members are the link to the thumbnail picture instead).