Question

I need to embed a player that can play video files and use subtitles (.srt).

Which players (with good documentation) are available for this task? And how do I set the file and subtitle to it?

Answer 1

Workaround

Add a Windows Media Player COM object.

Add a Timer

private Timer playingTimer = new Timer();
public Main()
{
    InitializeComponent();
    
    playingTimer.Enabled = false;
    playingTimer.Tick += renderSubtitles;
}

Handle StatusChange to know when it starts to play

private void Main_Load(object sender, EventArgs e)
{
    player.StatusChange += player_StatusChange;
}

Activate timer when playing

void player_StatusChange(object sender, EventArgs e)
{
    if (player.playState == WMPLib.WMPPlayState.wmppsPlaying)
    {
        playingTimer.Enabled = true;
    }
    else
    {
        playingTimer.Enabled = false;
    }
}

Get current seconds from player.Ctlcontrols.currentPosition, if a subtitle is found make the label visible, set the text and center horizontally. If there aren’t any subtitles, hide the label.

private void renderSubtitles(object sender, EventArgs e)
{
    var ts = TimeSpan.FromSeconds(player.Ctlcontrols.currentPosition);
    var entry = entries.FirstOrDefault(o => o.Start <= ts && o.End >= ts);

    if (entry != null)
    {
        subtitle.Visible = true;
        subtitle.Text = entry.Text;
        
        var w = splitContainer.Panel1.Width;
        subtitle.Location = new Point(w / 2 - subtitle.Width / 2, subtitle.Location.Y);
    }
    else
    {
        subtitle.Visible = false;
    }
}