/* DecoderSpecificInfo */
m4af_write_descriptor(ctx, 5, track->decSpecificInfoSize);
m4af_write(ctx, track->decSpecificInfo, track->decSpecificInfoSize);
/* DecoderSpecificInfo */
m4af_write_descriptor(ctx, 5, track->decSpecificInfoSize);
m4af_write(ctx, track->decSpecificInfo, track->decSpecificInfoSize);