Subtitles are not flip when using transform-vflip

[neosettler]

Greetings,

I need to flip the video in order to render to a texture using OpenGL.

With VLC 2.2.4 on windows 8.1 I do:

Code: Select all

const Char *l_args[] = { "--video-filter=transform", "--transform-type=vflip", }; m_VLC_Instance = libvlc_new(sizeof(l_args) / sizeof(l_args[0]), l_args);

The video play flipped as intended but the subtitles are still upside down, any idea what I might be missing?

Thank you,

[Jean-Baptiste Kempf]

No, it's a known bug.

[neosettler]

Ok thank you.

Is there a procedure for entering and tracking this bug?

When is 2.2.5 is due by the way?

[Rémi Denis-Courmont]

What do you mean by "still"? The video transform is not intended to affect SPUs.

[neosettler]

Hi Remis, when you transform vflip inside the application, the subtitles are flip as well but not using the libvlc and the previous code.

If you are right, what is the magic to achieve a vflip as in the VLC application? (including every possible items that could be shown on screen including subtitles and/or overlays of any kind)

[Rémi Denis-Courmont]

Pass a window handle rather than a memory area for rendering, I guess.

[neosettler]

Thank you for your suggestion but no can do because I must render to a texture.

[Rémi Denis-Courmont]

I was only answering your question as to how VLC does it.

[neosettler]

Ah, very good point. Will this bug be fixed in the next release? When is the next release due by the way? What about Version 3.0?