MATROSKA_ID_VIDEOPIXELWIDTH  283 libavformat/matroskadec.c     { MATROSKA_ID_VIDEOPIXELWIDTH,    EBML_UINT, 0, offsetof(MatroskaTrackVideo,pixel_width) },
MATROSKA_ID_VIDEOPIXELWIDTH  576 libavformat/matroskaenc.c                 put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);