+ if(avctx->codec->id == AV_CODEC_ID_WMAV2 && avctx->extradata_size >= 8){
+ if(AV_RL16(extradata+4)==0xd && s->use_variable_block_len){
+ av_log(avctx, AV_LOG_WARNING, "Disabling use_variable_block_len, if this fails contact the ffmpeg developers and send us the file\n");
+ s->use_variable_block_len= 0; // this fixes issue1503
+ }
+ }
+