{ CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
{ CODEC_ID_H263, MKTAG('X', '2', '6', '3') },
{ CODEC_ID_H263, MKTAG('L', '2', '6', '3') },
+ { CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') },
{ CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
{ CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
{ CODEC_ID_H261, MKTAG('H', '2', '6', '1') },
{ CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') },
{ CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') },
{ CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */
+ { CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') },
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },