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MovieTexture.Duration is -1

Discussion in 'Editor & General Support' started by Rudy-Pangestu, Sep 22, 2014.

  1. Rudy-Pangestu

    Rudy-Pangestu

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    May 24, 2013
    Posts:
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    Hi Unity Support Team,

    I'm trying to load .ogv file as a MovieTexture.

    Everything is fine, until I find that some .ogv files Duration is always -1. Depending on the file, sometimes the Duration is loaded correctly. I have put the Duration inside Update() function and even until the movie is finished playing, it's still -1.

    Sample .ogv file that the duration is always -1: https://s3.amazonaws.com/labsterim/media/videos/small.ogv

    Another file that the duration is correct: http://unity3d.com/files/docs/sample.ogg

    Any idea why this is happening? Is it because the movie encoding settings is different or something? Any help is greatly appreciated. Thanks!

    Edit:
    I am using Unity 4.5.2f1.
     
    Rudy-Pangestu, Sep 22, 2014
    #1

  2. John Fallon

    John Fallon

    Unity Technologies

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    I will look into this. What exactly are you trying to achieve with MovieTexture.duration? Generally MovieTexture.isPlaying is sufficient.
     
    John Fallon, Sep 22, 2014
    #2

  3. Rudy-Pangestu

    Rudy-Pangestu

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    I'm trying to create a simple video player in Unity. I need the duration to displayed at the corner, together with current playback time (which I calculate it myself).
     
    Rudy-Pangestu, Sep 23, 2014
    #3

  4. Rudy-Pangestu

    Rudy-Pangestu

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    No answer yet? :(
     
    Rudy-Pangestu, Oct 1, 2014
    #4

  5. John Fallon

    John Fallon

    Unity Technologies

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    This appears to be a bug.

    Edit:
    C̶o̶u̶l̶d̶ ̶y̶o̶u̶ ̶s̶u̶b̶m̶i̶t̶ ̶a̶ ̶b̶u̶g̶ ̶r̶e̶p̶o̶r̶t̶ ̶a̶n̶d̶ ̶w̶r̶i̶t̶e̶ ̶t̶h̶e̶ ̶c̶a̶s̶e̶ ̶n̶u̶m̶b̶e̶r̶ ̶i̶n̶ ̶t̶h̶i̶s̶ ̶t̶h̶r̶e̶a̶d̶?̶

    I am working on a fix for this. I will post in this thread again when I have an update for you.
     
    Last edited: Oct 2, 2014
    John Fallon, Oct 1, 2014
    #5

  6. Rudy-Pangestu

    Rudy-Pangestu

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    Thanks, I'll be waiting
     
    Rudy-Pangestu, Oct 6, 2014
    #6

  7. John Fallon

    John Fallon

    Unity Technologies

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    I have implemented this fix and it should be available in next week's patch release.
     
    John Fallon, Oct 9, 2014
    #7
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  8. H-Fly

    H-Fly

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    :)
     
    H-Fly, Oct 13, 2014
    #8

  9. H-Fly

    H-Fly

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    win7 4.5.5 f1 not OK
     
    H-Fly, Oct 14, 2014
    #9

  10. John Fallon

    John Fallon

    Unity Technologies

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    No, it'll be in 4.5.5 Patch 1 (release date: 16th October 2014).
     
    Last edited: Oct 16, 2014
    John Fallon, Oct 14, 2014
    #10

  11. John Fallon

    John Fallon

    Unity Technologies

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    John Fallon, Oct 16, 2014
    #11

  12. H-Fly

    H-Fly

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    H-Fly, Oct 17, 2014
    #12
    John Fallon likes this.

  13. Rudy-Pangestu

    Rudy-Pangestu

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    Hi John,

    I have downloaded Unity 4.5.5p1. It's still the same as before, the duration is -1 :-(
     
    Rudy-Pangestu, Oct 17, 2014
    #13

  14. John Fallon

    John Fallon

    Unity Technologies

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    Hmm, interesting. With the fix, my test project is successfully returning the duration of the sample .ogv file in the link you provided. It appears to have worked for other users too. Could you submit a bug report ("Help" -> "Report a Bug") with a reproducible project and then write the case number in this thread? This will allow me to see the problem and under what circumstances it arises.
     
    Last edited: Oct 17, 2014
    John Fallon, Oct 17, 2014
    #14

  15. Rudy-Pangestu

    Rudy-Pangestu

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    Sorry, false alarm. I've just tried it again and it works now. I must be opening the wrong version of unity back then.

    Thanks a lot!
     
    Rudy-Pangestu, Oct 20, 2014
    #15
    H-Fly and John Fallon like this.

  16. Rudy-Pangestu

    Rudy-Pangestu

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    Hi again John,

    Sorry, it seems like the behaviour is totally random. Now the duration is back to -1 again. Sometimes when I debug it, the duration is correct. But mostly it is -1.

    I have attached a sample script here. Can you please try it and confirm back to me?

    Code (CSharp):
    1. using UnityEngine;
    2. using System.Collections;
    3.  
    4. public class TestMovieTexture : MonoBehaviour
    5. {
    6.     WWW www;
    7.     // Use this for initialization
    8.     void Start ()
    9.     {
    10.         StartCoroutine(Foo());
    11.     }
    12.  
    13.     IEnumerator Foo()
    14.     {
    15.         www = new WWW("https://s3.amazonaws.com/labsterim/media/videos/small.ogv");
    16.         while (!www.isDone)
    17.         {
    18.             yield return null;
    19.         }
    20.  
    21.         Debug.Log(www.movie.duration);
    22.     }
    23.    
    24.     // Update is called once per frame
    25.     void Update ()
    26.     {
    27.         Debug.Log(www.movie.duration);
    28.     }
    29. }
     
    Rudy-Pangestu, Oct 20, 2014
    #16

  17. John Fallon

    John Fallon

    Unity Technologies

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    Yeah, there seems to be a problem with the WWW class. This will have to be looked into. If you have Unity Pro however, some slight modifications to your code using MovieTexture can fix the problem.

    Code (CSharp):
    1. using UnityEngine;
    2. using System.Collections;
    3.  
    4. public class TestMovieTexture : MonoBehaviour
    5. {
    6.     WWW www;
    7.     private float duration;
    8.  
    9.     // Use this for initialization
    10.     void Start ()
    11.     {
    12.         StartCoroutine(Foo());
    13.     }
    14.    
    15.     IEnumerator Foo()
    16.     {
    17.         www = new WWW("https://s3.amazonaws.com/labsterim/media/videos/small.ogv");
    18.  
    19.         var movieTexture = www.movie;
    20.         while (!movieTexture.isReadyToPlay)
    21.             yield return null;
    22.  
    23.         duration = movieTexture.duration;
    24.     }
    25.    
    26.     // Update is called once per frame
    27.     void Update ()
    28.     {
    29.         Debug.Log(duration);
    30.     }
    31. }
    32.  
     
    John Fallon, Oct 20, 2014
    #17
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  18. Rudy-Pangestu

    Rudy-Pangestu

    Joined:
    May 24, 2013
    Posts:
    16
    Yup, I have Unity Pro license.

    Ahh okay, I think I see the cause now. I have to store www.movie into a separate variable. I can't directly use www.movie to access the duration later on. It seems like the reference to www.movie is disposed or something. This is kinda weird, but at least now I know how to solve it.

    I have tested it in my main project. Yes, the duration is correct now.
    Thanks for the help!
     
    Rudy-Pangestu, Oct 20, 2014
    #18
    John Fallon likes this.