mp2 header missing

	while (1) {
        if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
            break;

        if ( (packet.stream_index == audio_stream_index) ) {
			ret = avcodec_decode_audio4(aud_ctx, aud_frame, &got_frame, &packet);
            if (ret < 0) {
            	audio_errors++;
            	if (audio_errors>99) {
                	fprintf(stderr, "CRITICAL: INPUT: Aborting as >99 Errors decoding audio! : %s\n",av_err2str(ret));
                	break;
                } else {
                	fprintf(stderr, "INPUT: Error #%d decoding audio! : %s\n",audio_errors,av_err2str(ret));
                }
            }
			if ( (ret>0) && (got_frame) )
			{
				if (!swr)
				{
					init_resampler(aud_ctx,sinfo->audContext->codec,&swr);
					init_fifo(sinfo->audContext->codec,&aud_fifo);
					//init_swr(aud_frame,sinfo->audContext->codec);
				}

				int finished;
				read_decode_convert_and_store(aud_frame, aud_fifo,
					                              audio_stream,
									              aud_ctx,
									              sinfo->audContext,
									              sinfo->audContext->codec,
									              swr);

				//if (av_audio_fifo_size(aud_fifo)>=sinfo->audContext->codec->frame_size )
				{
					load_encode_and_write(aud_fifo, sinfo->audContext, sinfo->fmtContext, sinfo->audContext->codec, sinfo->muxed_pts);
				}

				/*int err = av_buffersrc_write_frame(abuffer_ctx, aud_frame);
				if (err < 0) {
				    fprintf(stderr, "CRITICAL: INPUT: error writing audio frame to buffersrc\n");
				    goto end;
				}

				// pull filtered audio from the filtergraph
				for (;;) {
				    err = av_buffersink_get_frame(abuffersink_ctx, audio_filt_frame);
				    if (err == AVERROR_EOF || err == AVERROR(EAGAIN))
				        break;
				    if (err < 0) {
				        fprintf(stderr, "CRITICAL: INPUT: Error sending data to audio filtersink\n");
				        return -1;
				    }

					int finished;
					read_decode_convert_and_store(audio_filt_frame, aud_fifo,
						                              audio_stream,
										              aud_ctx,
										              sinfo->audContext,
										              sinfo->audContext->codec,
										              swr);

					//if (av_audio_fifo_size(aud_fifo)>=sinfo->audContext->codec->frame_size )
					{
						load_encode_and_write(aud_fifo, sinfo->audContext, sinfo->fmtContext, sinfo->audContext->codec, sinfo->muxed_pts);
					}

				}*/

			}
			got_frame = 0;
        }
	// Process Video Packets ...