add base64 blur video thumb

tubearchivist/home/src/download/thumbnails.py

@@ -4,8 +4,10 @@ functionality:
 - check for missing thumbnails
 """
 
+import base64
 import os
 from collections import Counter
+from io import BytesIO
 from time import sleep
 
 import requests
@@ -15,7 +17,7 @@ from home.src.ta.config import AppConfig
 from home.src.ta.helper import ignore_filelist
 from home.src.ta.ta_redis import RedisArchivist
 from mutagen.mp4 import MP4, MP4Cover
-from PIL import Image
+from PIL import Image, ImageFilter
 
 
 class ThumbManager:
@@ -241,6 +243,21 @@ class ThumbManager:
             }
             RedisArchivist().set_message("message:download", mess_dict)
 
+    def get_base64_blur(self, youtube_id):
+        """return base64 encoded placeholder"""
+        img_path = self.vid_thumb_path(youtube_id)
+        file_path = os.path.join(self.CACHE_DIR, img_path)
+        img_raw = Image.open(file_path)
+        img_raw.thumbnail((img_raw.width // 20, img_raw.height // 20))
+        img_blur = img_raw.filter(ImageFilter.BLUR)
+        buffer = BytesIO()
+        img_blur.save(buffer, format="JPEG")
+        img_data = buffer.getvalue()
+        img_base64 = base64.b64encode(img_data).decode()
+        data_url = f"data:image/jpg;base64,{img_base64}"
+
+        return data_url
+
     @staticmethod
     def vid_thumb_path(youtube_id):
         """build expected path for video thumbnail from youtube_id"""

tubearchivist/home/src/es/index_mapping.json

@@ -73,6 +73,10 @@
                     "type": "text",
                     "index": false
                 },
+                "vid_thumb_base64": {
+                    "type": "text",
+                    "index": false
+                },
                 "date_downloaded": {
                     "type": "date"
                 },

tubearchivist/home/src/index/video.py

@@ -10,6 +10,7 @@ from datetime import datetime
 
 import requests
 from django.conf import settings
+from home.src.download.thumbnails import ThumbManager
 from home.src.es.connect import ElasticWrap
 from home.src.index import channel as ta_channel
 from home.src.index.generic import YouTubeItem
@@ -389,12 +390,14 @@ class YoutubeVideo(YouTubeItem, YoutubeSubtitle):
         upload_date_time = datetime.strptime(upload_date, "%Y%m%d")
         published = upload_date_time.strftime("%Y-%m-%d")
         last_refresh = int(datetime.now().strftime("%s"))
+        base64_blur = ThumbManager().get_base64_blur(self.youtube_id)
         # build json_data basics
         self.json_data = {
             "title": self.youtube_meta["title"],
             "description": self.youtube_meta["description"],
             "category": self.youtube_meta["categories"],
             "vid_thumb_url": self.youtube_meta["thumbnail"],
+            "vid_thumb_base64": base64_blur,
             "tags": self.youtube_meta["tags"],
             "published": published,
             "vid_last_refresh": last_refresh,