x.265 VLC vs libvlc

[mangokm40]

I'm wondering if anyone has had this problem with x.265 video:

The file plays fine with VLC (2.2.4) with default preferences. However, I get stuttering and gray blocks with libvlc (2.2.4).
I'm not using any arguments when creating the instance.

Has anyone else experienced this?

Thanks.

[Rémi Denis-Courmont]

Are you configuring the video output in any way, or do you let LibVLC create its own independent video window?

[mangokm40]

Are you configuring the video output in any way, or do you let LibVLC create its own independent video window?

I use "libvlc_media_player_set_hwnd()" to direct the output to "my window".
I don't 'process' the output in any way.


Thanks for your time.

[Rémi Denis-Courmont]

Try to comment out the set_hwnd() call and see if it fixes performance problems then. Maybe your window handle is incompatible with some optimizations.

[mangokm40]

Try to comment out the set_hwnd() call and see if it fixes performance problems then. Maybe your window handle is incompatible with some optimizations.

Thanks again. I will try this tonight and post back.

[mangokm40]

Try to comment out the set_hwnd() call and see if it fixes performance problems then. Maybe your window handle is incompatible with some optimizations.

I commented out the set_hwnd call. A new window is created but the playback chokes exactly as before.

Is there anything in the VLC default preferences that I might need to "set" in libvlc?

Originally, I thought it was my PC. However, the file plays without any problem with VLC.


Thank you.

[Rémi Denis-Courmont]

Well then, are you sure you did not change the VLC preferences? LibVLC should play pretty much like VLC with default settings.

[mangokm40]

Well then, are you sure you did not change the VLC preferences? LibVLC should play pretty much like VLC with default settings.

Well, I'm pretty sure.

I will download VLC again tonight and try with a fresh version.

Thanks.

[mangokm40]

I downloaded VLC 2.2.4 (not the install version). I ran it as is and the x.265 video played fine. This time, I checked CPU usage.
It was between 45%-52% for the 10 seconds I let the video play.

When running the libvlc program, the video stutters and blocks right away and CPU usage is only 22%-28%.

Is there something that might be keeping libvlc from using more of the CPU ?

Thanks.

[Rémi Denis-Courmont]

Repeating myself but did you use default settings in both tests?

[mangokm40]

Repeating myself but did you use default settings in both tests?

Sorry about the lack of clarity. I downloaded the VLC 2.2.4 again and used it without changing (or even seeing) any settings.

I am not using any arguments in the call to libvlc_new() and I'm not using any calls to libvlc_media_add_option().


Thanks again.

[Rémi Denis-Courmont]

You are not answering the question; I can't help you.

[mangokm40]

You are not answering the question; I can't help you.

Hmmm...The answer is yes. I am using the defaults for both.
I was trying to be more specific, in case I missed something. That's why I mentioned HOW I believe I'm using defaults.

Thanks for time.