Canceled or cancelled is the past tense of the verb to cancel. Both spellings are correct; Americans favor canceled (one L), while canceled (two Ls) is preferred in British English and other dialects. However, while cancelation is rarely used (and technically correct), cancellation is by far the more widely-used spelling, no matter where you are.
It rather depends on how you view the noun 'brake'. In a car, you can 'hit the brake' because the brake is often used for 'brake pedal'. 'Hit the brakes' refers to the actual brakes or the braking system as a whole. The same logic applies to bikes. Even if the bike only has brakes on the front wheel, there are still two brakes, on each side of the wheel. (https://forum.wordreference.com/)
cf. put the brake on
Our boss put the brakes on executing our proposal.
HEIF (High Efficiency Image Format)는 MPEG에서 개발된 이미지 포멧이다.
정확히는 이미지 컨테이너 포멧이므로 HEIC (High Efficiency Image Container)라는 별칭으로 불리기도 한다. 국내 아이폰 사용자들은 '히프' 또는 '헤익'이라고 부른다. 확장자는 *.heif 또는 *.heic이다. H.265/HEVC 코덱으로 인코딩된 개별 프레임을 저장할 수 있는 별도의 이미지 컨테이너이다. 즉, HEVC 코덱으로 저장된 비디오의 스틸 이미지를 담아두는 것. (나무위키)