ALTER TABLE media_sets ADD COLUMN audio_content_length bigint NOT NULL;
ALTER TABLE media_sets ADD COLUMN video_content_length bigint NOT NULL;

ALTER TABLE media_sets ADD CONSTRAINT check_audio_content_length_gt_0 CHECK (audio_content_length > 0);
ALTER TABLE media_sets ADD CONSTRAINT check_video_content_length_gt_0 CHECK (video_content_length > 0);
