ffmpeg: replace av_vsrc_buffer_add_frame by av_buffersrc_add_frame.

ffmpeg.c

@@ -2662,7 +2662,7 @@ static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int
                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
                                  AV_BUFFERSRC_FLAG_NO_COPY);
         } else
-        if(av_vsrc_buffer_add_frame(ist->filters[i]->filter, decoded_frame,AV_VSRC_BUF_FLAG_OVERWRITE)<0) {
+        if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
             exit_program(1);
         }