- img_convert(&pict, dst_pix_fmt,
- (AVPicture *)src_frame, is->video_st->codec->pix_fmt,
- is->video_st->codec->width, is->video_st->codec->height);
+ if (img_convert_ctx == NULL) {
+ img_convert_ctx = sws_getContext(is->video_st->codec->width,
+ is->video_st->codec->height, is->video_st->codec->pix_fmt,
+ is->video_st->codec->width, is->video_st->codec->height,
+ dst_pix_fmt, sws_flags, NULL, NULL, NULL);
+ if (img_convert_ctx == NULL) {
+ fprintf(stderr, "Cannot initialize the conversion context\n");
+ exit(1);
+ }
+ }
+ sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
+ 0, is->video_st->codec->height, pict.data, pict.linesize);