s->video[0] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp);
s->video[1] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp);
s->pal = av_calloc(256, sizeof(*s->pal));
s->video[0] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp);
s->video[1] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp);
s->pal = av_calloc(256, sizeof(*s->pal));