- buf_size = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
- utv->output = (uint8_t *)av_malloc(buf_size * sizeof(uint8_t));
+ utv->buf_size = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
+ utv->output = (uint8_t *)av_malloc(utv->buf_size * sizeof(uint8_t));