Resolution Format
res
Controls the output resolution of Long-Form Video only when fm=mp4 is used.
Accepts the following values depending on the original resolution of the uploaded video:
high(default): FHD or HD video (up to 1080p)medium: SD video (up to 720p)low: video with a resolution lower thanmedium(less than 480p)
The available resolutions depend on the original resolution of the uploaded video. For example, if the origin video is 480p, only two resolutions may be retrievable: 480p (res=medium) and a resolution lower than 480p, i.e. res=low. In this scenario, if you request this video with res=high (ex: fm=mp4&res=high), you receive the highest resolution available (res=medium).