Prefer mp4 to m3u8 for Video Playback if proxyVideos is off

m3u8 videos only work when the proxy is enabled. Further, this allows
video playback without Javascript.

This is only done when proxying is disabled to avoid excessive memory
usage on the nitter instance that would result from loading longer
videos in a single chunk.

src/views/tweet.nim

@@ -62,11 +62,14 @@ proc renderAlbum(tweet: Tweet): VNode =
             a(href=getPicUrl(orig), class="still-image", target="_blank"):
               genImg(small)
 
-proc isPlaybackEnabled(prefs: Prefs; video: Video): bool =
-  case video.playbackType
+proc isPlaybackEnabled(prefs: Prefs; playbackType: VideoType): bool =
+  case playbackType
   of mp4: prefs.mp4Playback
   of m3u8, vmap: prefs.hlsPlayback
 
+proc hasMp4Url(video: Video): bool =
+  video.variants.anyIt(it.contentType == mp4)
+
 proc renderVideoDisabled(video: Video; path: string): VNode =
   buildHtml(tdiv(class="video-overlay")):
     case video.playbackType
@@ -87,6 +90,9 @@ proc renderVideo*(video: Video; prefs: Prefs; path: string): VNode =
   let container =
     if video.description.len > 0 or video.title.len > 0: " card-container"
     else: ""
+  let playbackType =
+    if not prefs.proxyVideos and video.hasMp4Url: mp4
+    else: video.playbackType
 
   buildHtml(tdiv(class="attachments card")):
     tdiv(class="gallery-video" & container):
@@ -95,13 +101,13 @@ proc renderVideo*(video: Video; prefs: Prefs; path: string): VNode =
         if not video.available:
           img(src=thumb)
           renderVideoUnavailable(video)
-        elif not prefs.isPlaybackEnabled(video):
+        elif not prefs.isPlaybackEnabled(playbackType):
           img(src=thumb)
           renderVideoDisabled(video, path)
         else:
-          let vid = video.variants.filterIt(it.contentType == video.playbackType)
-          let source = getVidUrl(vid[0].url)
-          case video.playbackType
+          let vid = video.variants.filterIt(it.contentType == playbackType)
+          let source = if prefs.proxyVideos: getVidUrl(vid[0].url) else: vid[0].url
+          case playbackType
           of mp4:
             if prefs.muteVideos:
               video(poster=thumb, controls="", muted=""):