Inclusion Criteria:  Children and adolescents aged between 8-17 years; Living in Brazil Total t-score of 70 or above in the 25-item version of the Revised Children's Anxiety and Depression Scale - parent report and child report versions  Exclusion Criteria:  No contact between child/adolescent and parents in the 15 days previous to the beginning of the intervention Unavailability of at least one parent/caregiver to participate in all of the telepsychotherapeutic sessions (intervention group) or watch the videos along their child (active control group) Inability of the caregivers to understand the parent-report scales or the content of the interventions, according to the clinical judgement of a clinical psychologist Indications that the child might have a severe mental disorder and/or social condition that require a more intensive assessment and treatment, such as autism spectrum disorder, severe mood disorder, suicide risk, schizophrenia, intellectual disability, intense intrafamiliar conflict or intense maltreatment victimization, according to the clinical judgement of a clinical psychologist; suicidality will be assessed with the aid of the 4 questions of the Mood and Feelings Questionnaire (MFQ) questionnaire that focus on this trait ("S/he thought that life wasn't worth living", "S/he thought about death or dying", "S/he thought his/her family would be better off without him/her", "S/he thought about killing him/herself") (individuals that answer "yes" to the last question will be excluded from the study and referred to adequate and more intensive care) Current use or in the last 1 month of any psychiatric medication or psychotherapy