56         int skip = 0;  in is_animated_webp_packet()  local
62             skip = 12;  in is_animated_webp_packet()
64         if (pkt->size < skip + 4)  in is_animated_webp_packet()
66         if (AV_RL32(pkt->data + skip) == AV_RL32("VP8X")) {  in is_animated_webp_packet()
67             flags |= pkt->data[skip + 4 + 4];  in is_animated_webp_packet()
81         int skip = 0;  in flush()  local
86             skip = 12;  in flush()
88         if (AV_RL32(w->last_pkt.data + skip) == AV_RL32("VP8X")) {  in flush()
89             flags |= w->last_pkt.data[skip + 4 + 4];  in flush()
91             skip += AV_RL32(w->last_pkt.data + skip + 4) + 8;  in flush()
125             avio_wl32(s->pb, 16 + w->last_pkt.size - skip);  in flush()
136         avio_write(s->pb, w->last_pkt.data + skip, w->last_pkt.size - skip);  in flush()