The VideoLAN Forums

Posted: **21 Jan 2023 00:33**

Hi,
I'm using the Delphi code shown here - https://wiki.videolan.org/Using_libvlc_with_Delphi, it works fine.
However, I can't seem to add there to run the video at a specific time.
It is

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libvlc_media_player_set_time(libvlc_media_player, 10000);

I searched for a while for the settings, declension, when I managed to run it a message pops up.

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Access violation at address 65E85B78 in module Ílibvlccore,dll.
Read of address 00000044

.
Do you have a tip please, point me to working code, for Delphi X5, I'm running on Windows.

Posted: **22 Jan 2023 15:48**

This is a NULL pointer dereference, and that's pretty much all that can be inferred from the very little info provided.

Posted: **22 Jan 2023 18:09**

This is a NULL pointer dereference, and that's pretty much all that can be inferred from the very little info provided.

That's why I'm asking here, if anyone knows how to add the code above or has something working.
I've tried a lot of ways and nothing comes to mind anymore. Finding something functional or that would direct me with libvlc_media_player_set_time hasn't worked.
It would be ideal to add this to the code above for others.

Posted: **23 Jan 2023 16:55**

the player must be playing or paused before to call libvlc_media_player_set_time

Posted: **23 Jan 2023 18:36**

the player must be playing or paused before to call libvlc_media_player_set_time

Thanks for the kick even though I had it on an already running video so the error was

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libvlc_media_player_set_hwnd(vlcMediaPlayer, Pointer(Panel1.Handle));
libvlc_media_player_play(vlcMediaPlayer);
libvlc_media_player_set_time(libvlc_media_player, 170000);
should be
libvlc_media_player_set_time(vlcMediaPlayer, 170000);

Posted: **23 Jan 2023 18:51**

I added to this code https://wiki.videolan.org/Using_libvlc_with_Delphi

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implementation
{$R *.dfm}
var
....................
  libvlc_media_player_set_time : procedure(p_media_player : plibvlc_media_player_t; time : Int64); cdecl;
......................

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/ -----------------------------------------------------------------------------
// Get address of libvlc functions
// -----------------------------------------------------------------------------
function LoadVLCFunctions(vlcHandle: integer; failedList: TStringList): Boolean;
begin
................
    GetAProcAddress(vlcHandle, @libvlc_media_player_set_time, 'libvlc_media_player_set_time', failedList);
...............
end;

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.....................
// play media
  libvlc_media_player_play(vlcMediaPlayer);
  libvlc_media_player_set_time(vlcMediaPlayer, 170000);

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