MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE 2726 libavformat/matroskadec.c             else if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE)
MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE  991 libavformat/matroskaenc.c                       MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE);