/etc/skyhost/skypevideocodecs.conf default file [sender-param] profile-idc=66 profile-iop=224 level-idc=21 QQVGA-pref=0 QVGA-pref=80 VGA-pref=0 [receiver-param] profile-idc=66 profile-iop=224 level-idc=21 max-br=100 QQVGA-pref=60 QVGA-pref=0 VGA-pref=0 By changing VGA-pref=80 in the [sender-param] one can send 640x480 videos on skype. MEanings of the flags: profile-level-id: A base16 RFC 4648 [9] (hexadecimal) representation of the following three bytes in the sequence parameter set NAL unit specified in H.264 [4]: 1) profile_idc, 2) a byte herein referred to as profile-iop, composed of the values of constraint_set0_flag, constraint_set1_flag, constraint_set2_flag, constraint_set3_flag, and reserved_zero_4bits in bit-significance order, starting from the most significant bit, and 3) level_idc. Note that reserved_zero_4bits is required to be equal to 0 in H.264 [4], but other values for it may be specified in the future by ITU-T or ISO/IEC. The profile-level-id parameter indicates the default sub-profile, i.e. the subset of coding tools that may have been used to generate the stream or that the receiver supports, and the default level of the stream or the receiver supports. http://tools.ietf.org/html/draft-iet...p-h264-rcdo-06