Enumerating media track using vlc.c

	libvlc_media_track_t** pp_tracks;
	unsigned i_count = libvlc_media_tracks_get(m, &pp_tracks);
	if (i_count > 0) {
		for (unsigned i = 0; i < i_count; ++i)
		{
			libvlc_media_track_t* p_track = pp_tracks[i];
			switch (p_track->i_type)
			{
			case libvlc_track_audio:
				printf("audio: channels: %u, rate: %u\n",
					p_track->audio->i_channels, p_track->audio->i_rate);
				break;
			case libvlc_track_video:
				printf("video: %ux%u, sar: %u/%u, fps: %u/%u\n",
					p_track->video->i_width, p_track->video->i_height,
					p_track->video->i_sar_num, p_track->video->i_sar_den,
					p_track->video->i_frame_rate_num, p_track->video->i_frame_rate_den);
				break;
			case libvlc_track_text:
				printf("text: %s\n", p_track->subtitle->psz_encoding);
				break;
			case libvlc_track_unknown:
				printf("unknown\n");
				break;
			default:
				break;
			}
		}
	}

	libvlc_media_tracks_release(pp_tracks, i_count);