fprintf(fp," format %d\n", format);
fprintf(fp," fformat=\"%s\"\n", fformat);
fprintf(fp," ff_audio_options=\"%s\"\n", ff_audio_options);
fprintf(fp," format %d\n", format);
fprintf(fp," fformat=\"%s\"\n", fformat);
fprintf(fp," ff_audio_options=\"%s\"\n", ff_audio_options);