Show Twitch.tv stream within a unity3D application

Question

I would like to make an Unity3D Application in which one can watch a current Twitch.tv live stream.

I am not sure if this is possible, for example, with the twitch api (https://github.com/justintv/twitch-api)

I know about the video textures in Unity3D and I know how to use the default twitch api basics but I do not have an idea how to integrate a running twitch stream into my application.

Can someone please give me a hint if this is possible?

Thanks very much and best regards Meph

Answer 1

@Ted Bigham is there anyway to do this just using the default unity video player?

Everything you've said so far has worked great! With just chrome, I'm able to open the .m3u8 and download each 1 second .ts file. With just any video player, I can view each video file just fine.

When I try to pass the url through Video Player though, it says "Cannot read file." I even tried replacing .ts with .mp4 since that is a supported format. This works when I test it outside of Unity, but gives me the same error.

Here's my code.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.Video;

public class TwitchStreamer : MonoBehaviour
{

    public string m3u8 = "https://video-weaver.atl01.hls.ttvnw.net/v1/playlist/Cq4EuEYkh5IqurC4gy3nHqGhPVtUwH_" +
        "5QcQbCatC5Fhit9qbivMQ2rdh2MS_m_2OuLd3VS2mF0eTrCKrz8YTuDO19mcbIBMJL3BUMz4jnNuU_t-e53V51TOtaN3vcCk9n3Qr" +
        "dP0WyLREnVR0n_30d4PlUjjW4_si5Wr2XuePQ0dPtxP6jnsenKnX56YTLohtCN2-FdfSvHQMdfd0aw68FA4h9wawHoIM9-U6YRmPa" +
        "fDsfdCiZr_iToSR6lZi81VoYPVjt7Ygf7xKwhjlNwrvA5SnsAnWQGIOVt4UjDkNLw-hmNMAr7RT0iiDghKXZY1VI6Tuc-umB1VXYE" +
        "7BH5hHbDfHgB3_IYNb0fjoudtSuaZxISyWoazPrw3AibEO7k1-quhdcjarBTGpIi_dlPEp-yZlQOy98_OZY_tqjk8ZWTBIaAAYEG_" +
        "miwqsgH4d6eIfkh3ehyMvPQH1C5dVG9tQcSWPUYU6D6hWhxvJhEr-UC0_BYWIVzX7z_Uf74FJGIEqSQc0d6igiowdMM_lyD8ZV9BE" +
        "7wqQs3RegMPqux-AOfF-_Q7Ki2MBv9u7D9ZRXMH_cm20bTx5-ShEDRnWMApSfXK-9bAGNXUcw8YlBbHYeSN5VxEZMC2oGjcivBsGs" +
        "RPMTQ_yNBSM1S6GxFRIR4nqA-mbdXg3rXMW3V6MNybBb1lrrQeEqF1tdYE0rfxe3Ki5WWkxeKmSjMGbMl1tHCwMaReTYkQnX5Qhjl" +
        "HXXtKLtEIEEhB3cXW3oF05-E_q87s68JQIGgyIEKPiQlTsANR9zRc.m3u8";


    public float updateClip = 1f, updateFile = 6f;

    public VideoPlayer vp;

    Queue<string> urls;

    void OnEnable()
    {
        StartCoroutine(UpdateFile());
        //InvokeRepeating("UpdateFile", 0f, updateFile);
        InvokeRepeating("UpdateClip", updateClip, updateClip);
        urls = new Queue<string>();
        vp.prepareCompleted += Vp_prepareCompleted;
        vp.errorReceived += Vp_errorReceived;
    }

    private void Vp_errorReceived(VideoPlayer source, string message)
    {
        Debug.Log("4567: Playback preparation failed. " + message, source);
    }

    private void Vp_prepareCompleted(VideoPlayer source)
    {
        Debug.Log("4567: Playback preparation complete.");
        source.Play();
    }

    void OnDisable()
    {
        CancelInvoke();
        StopAllCoroutines();
        vp.prepareCompleted -= Vp_prepareCompleted;
        vp.errorReceived -= Vp_errorReceived;
    }

    void UpdateClip()
    {
        //vp.Stop();
        if (urls.Count > 0)
        {
            vp.url = urls.Dequeue();
            vp.Prepare();
            Debug.Log("4567: Prepare playback for " + vp.url);
        }
    }

    IEnumerator UpdateFile()
    {
        UnityWebRequest www = UnityWebRequest.Get(m3u8);
        yield return www.SendWebRequest();

        if (www.isNetworkError || www.isHttpError)
        {
            Debug.Log(www.error);
        }
        else
        {
            // Show results as text
            //Debug.Log(www.downloadHandler.text);
            string[] raw = www.downloadHandler.text.Split('\n');
            foreach (string line in raw)
            {
                if (line.Contains("http"))
                {
                    string cnvrt = line.Replace(".ts", ".mp4");
                    urls.Enqueue(cnvrt);
                    Debug.Log(line + " has been added to stream queue.");
                }
            }
            // Or retrieve results as binary data
            //byte[] results = www.downloadHandler.data;
        }
        yield return new WaitForSeconds(updateFile);
    }
}