PeerTube #1135 proposal

diff.patch

diff --git server/helpers/ffmpeg-utils.ts server/helpers/ffmpeg-utils.ts
index ed823a67..92025092 100644
--- server/helpers/ffmpeg-utils.ts
+++ server/helpers/ffmpeg-utils.ts
@@ -116,10 +116,6 @@ type TranscodeOptions = {
 
 function transcode (options: TranscodeOptions) {
   return new Promise<void>(async (res, rej) => {
-    if (options.resolution === undefined) {
-      return rej('Invalid video file')
-    }
-
     let command = ffmpeg(options.inputPath, { niceness: FFMPEG_NICE.TRANSCODING })
                     .output(options.outputPath)
                     .preset(standard)
@@ -130,16 +126,18 @@ function transcode (options: TranscodeOptions) {
     }
 
     let fps = await getVideoFileFPS(options.inputPath)
-    // '?x720' or '720x?' for example
-    const size = options.isPortraitMode === true ? `${options.resolution}x?` : `?x${options.resolution}`
-    command = command.size(size)
-
-    // On small/medium resolutions, limit FPS
-    if (
-      options.resolution < VIDEO_TRANSCODING_FPS.KEEP_ORIGIN_FPS_RESOLUTION_MIN &&
-      fps > VIDEO_TRANSCODING_FPS.AVERAGE
-    ) {
-      fps = VIDEO_TRANSCODING_FPS.AVERAGE
+    if (options.resolution !== undefined) {
+      // '?x720' or '720x?' for example
+      const size = options.isPortraitMode === true ? `${options.resolution}x?` : `?x${options.resolution}`
+      command = command.size(size)
+
+      // On small/medium resolutions, limit FPS
+      if (
+        options.resolution < VIDEO_TRANSCODING_FPS.KEEP_ORIGIN_FPS_RESOLUTION_MIN &&
+        fps > VIDEO_TRANSCODING_FPS.AVERAGE
+      ) {
+        fps = VIDEO_TRANSCODING_FPS.AVERAGE
+      }
     }
 
     if (fps) {
diff --git shared/models/videos/video-resolution.enum.ts shared/models/videos/video-resolution.enum.ts
index d608a7bc..63771e99 100644
--- shared/models/videos/video-resolution.enum.ts
+++ shared/models/videos/video-resolution.enum.ts
@@ -38,6 +38,7 @@ export function getTargetBitrate (resolution: VideoResolution, fps: number) {
       return 1750 * 1000
     }
   case VideoResolution.H_1080P:
+  default:
     if (fps === 60) {
       // quality according to Google Live Encoder: 3000 - 6000 Kbps
       // Quality according to YouTube Video Info: 4387 Kbps