Problem playing videos of different resolutions.VLCj Ubuntu

[herculano]

I am using VLCj (java) 2.1.0 and am having trouble playing videos of different resolutions.

The first video to play using the entire area of the container, then play all videos with black bars top and bottom of the container.

If I take a stop in the player before playing the next video, the video container occupies the entire space.

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private EmbeddedMediaPlayer player; private MediaPlayerFactory factory; private Frame videoFrame; private Canvas videoSurfaceCanvas; private CanvasVideoSurface videoSurface; public VLC(Composite parent){ super(parent, SWT.EMBEDDED | SWT.NO_BACKGROUND); setBackground(getDisplay().getSystemColor(SWT.COLOR_BLACK)); setBounds(getParent().getBounds()); } @Override public void init() { // argumentos padr�es do vlc String[] args = new String[] { "--no-video-title-show", "--no-xlib" }; // se existem argumentos passados para o java recupera // os mesmos e usa ao invez do valor padr�o if (((String[]) Session.get("args")).length > 0) args = (String[]) Session.get("args"); // cria um AWT Frame necess�rio para conter // o canvas usado como video surface videoFrame = SWT_AWT.new_Frame(this); videoFrame.setBackground(java.awt.Color.BLACK); // canvas usado como video surface videoSurfaceCanvas = new Canvas(); videoSurfaceCanvas.setSize(newSize().width, newSize().height); videoSurfaceCanvas.setBackground(java.awt.Color.BLACK); videoFrame.add(videoSurfaceCanvas); // instancia libvlc libvlc = LibVlcFactory.factory().create(); factory = new MediaPlayerFactory(libvlc, args); videoSurface = factory.newVideoSurface(videoSurfaceCanvas); // cria uma instancia unica do VLC player usando MediaPlayerFactory player = factory.newEmbeddedMediaPlayer(new DefaultFullScreenStrategy(videoFrame)); player.setVideoSurface(videoSurface); player.setPlaySubItems(true); player.setFullScreen(true); } @Override public void play(final MediaElement elem) { /** @TODO * Propriedade que armazena o caminho do vídeo. * Pode ser utilizada para gravar log de exibição * A hora da exibição pode ser capturada com G.timestamp() */ caminhoVideo = elem.path(); if(forceVideoAdjust) player.stop(); player.playMedia(caminhoVideo); }

Sorry, my bad.

[sherington]

There's too much code here to review, do you have a *minimal* test case that demonstrates the problem?

[herculano]

I have a playlist with 2 videos.

• Second video has resolution 848x480 and uses extension flv

• First video has resolution 1280x720 and uses extension mp4.

The first video plays in full screen after that the others do not play occupying the entire videoSurfaceCanvas.
I set the background color of the videosurfacecanvas with red for better visualization.







Any ideas ?:

[sherington]

The code you posted does this:

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videoSurfaceCanvas.setSize(newSize().width, newSize().height);

But you didn't show what newSize() does, or you removed it when you edited your post. You are using that method to size your Canvas, so the bug is likely in that method, or you are calling it at the wrong time.

There is a test video player application in the vlcj test sources that resizes the video surface correctly, did you look there to see how it's done and compare it with your own application?

[herculano]

The code still on the post.

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videoSurfaceCanvas.setSize(newSize().width, newSize().height);

Following the implementation of newSize method. My class extends org.eclipse.swt.widgets.Composite

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private java.awt.Rectangle newSize() { return G.toAwt(getBounds()); } public static java.awt.Rectangle toAwt(Rectangle rect) { // TODO Auto-generated method stub return new java.awt.Rectangle(rect.x, rect.y, rect.width, rect.height); }

Where i find the source code test ?

Sorry about that, but I was not that developed this application, and i don't know much about the VLCj.

[sherington]

I still don't quite understand what your issue is.

From the code you posted you appear to be setting your video surface size to match the size of some other component, not the size of the video itself, is that right?

Well, when your video is being rendered into the available video surface it will use as much space as possible while preserving the video aspect ratio. So if the available video surface size is larger than the actual video size you will inevitably get the black (or red in your case) bars at the top and bottom (or maybe even left and right).

Maybe you don't care about preserving the aspect ratio and instead want to fill the screen?

[sherington]

So I wrote a quick full-screen media player test that basically played the first five seconds of each file in a particular directory, the files having various different video dimensions...

As expected the video scales up to the screen resolution 1920x1200, preserving the aspect ratio of each video file individually, and I see red bars.

Now I add this after playing the video:

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mediaPlayer.setAspectRatio("16:10"); // 1920:1200 === 16:10

Now the screen is completely filled for each video and the red bars disappear, but the video is stretched a bit of course.

I do not need to stop the media player first (like your workaround does).

I don't see anything wrong.

So I think either you size your video surface Canvas to the same size as the video, or you set an appropriate aspect ratio.

[herculano]

I don't care about preserving the aspect ratio. I want the video occupying the entire container.

This application runs on different screen resolutions.

What I have to do to not show the red bars ?

[sherington]

I already told you one way in my previous post. Set the media player aspect ratio to that of your 'container'. That might work well enough for you if you have a full-screen application, but if you are going to allow your users to resize the window however they like then there's nothing you can do that I know of, short of limiting the window resizing to the correct aspect ratio. There is no magic switch that I know of that just says "fill this arbitrary size container with video".

[herculano]

I tried some ways to fix this issue. In one of cases i installed the Vlc 2.1.0 and fixed this issue.

See the images





Previously i had used the Vlc ( 2.0.8 ) the default repository of ubuntu 12:04 LTS.

My question is, if I can use vlc 2.1.0 on ubuntu 12:04 LTS even it not being on the official ubuntu repository ? What is the repository for vlc 2.1.0 in a ubuntu 12.04 LTS?