Don't use min FPS, throw instead

Avoir creating a big output from a very low FPS input file

server/helpers/ffprobe-utils.ts

@@ -302,7 +302,10 @@ function computeFPS (fpsArg: number, resolution: VideoResolution) {
 
   // Hard FPS limits
   if (fps > VIDEO_TRANSCODING_FPS.MAX) fps = getClosestFramerateStandard(fps, 'HD_STANDARD')
-  else if (fps < VIDEO_TRANSCODING_FPS.MIN) fps = VIDEO_TRANSCODING_FPS.MIN
+
+  if (fps < VIDEO_TRANSCODING_FPS.MIN) {
+    throw new Error(`Cannot compute FPS because ${fps} is lower than our minimum value ${VIDEO_TRANSCODING_FPS.MIN}`)
+  }
 
   return fps
 }

server/initializers/constants.ts

@@ -346,7 +346,7 @@ const VIEW_LIFETIME = {
 let CONTACT_FORM_LIFETIME = 60000 * 60 // 1 hour
 
 const VIDEO_TRANSCODING_FPS: VideoTranscodingFPS = {
-  MIN: 10,
+  MIN: 1,
   STANDARD: [ 24, 25, 30 ],
   HD_STANDARD: [ 50, 60 ],
   AVERAGE: 30,