diff --git a/post_rss_to_ghost.py b/post_rss_to_ghost.py
index 179fbde..c9ac18a 100644
--- a/post_rss_to_ghost.py
+++ b/post_rss_to_ghost.py
@@ -18,14 +18,29 @@ from urllib.parse import urlparse, parse_qs
 
 # ------------- YouTube helpers -------------
 
-YOUTUBE_EMBED_TMPL = (
-    '<div class="yt-container" style="position:relative;aspect-ratio:16/9;max-width:800px;margin:1rem 0">'
-    '<iframe src="https://www.youtube.com/embed/{vid}" '
-    'title="YouTube video" loading="lazy" '
-    'style="position:absolute;inset:0;width:100%;height:100%;border:0" '
-    'allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" '
-    'allowfullscreen></iframe></div>'
-)
+def fetch_youtube_oembed_html(youtube_url: str, timeout: int = 10) -> str | None:
+    """
+    Get YouTube oEmbed HTML exactly as provided and wrap it as a Ghost embed card.
+    """
+    try:
+        resp = requests.get(
+            "https://www.youtube.com/oembed",
+            params={"url": youtube_url, "format": "json"},
+            headers={"User-Agent": "ghost-bot/1.0"},
+            timeout=timeout,
+        )
+        resp.raise_for_status()
+        data = resp.json()
+        html = data.get("html")
+        if not html:
+            return None
+        # Wrap in Ghost embed card container; do NOT alter the iframe attributes.
+        return f'<figure class="kg-card kg-embed-card">{html}</figure>'
+    except Exception:
+        return None
+    
+def youtube_thumbnail_url(video_id: str) -> str:
+    return f"https://i.ytimg.com/vi/{video_id}/hqdefault.jpg"    
 
 def extract_youtube_id(url: str) -> Optional[str]:
     try:
@@ -242,13 +257,18 @@ class GhostTask:
             # --- YouTube embed / fallback
             vid = post.get("yt_videoid") or extract_youtube_id(linkURL)
             if vid:
-                # iframe (web) + thumbnail (email-safe) + lien
-                thumb = f"https://i.ytimg.com/vi/{vid}/hqdefault.jpg"
-                parts.append(YOUTUBE_EMBED_TMPL.format(vid=vid))
-                parts.append(f'<p><a href="https://www.youtube.com/watch?v={vid}">Voir sur YouTube</a></p>')
-                parts.append(f'<p><a href="https://www.youtube.com/watch?v={vid}"><img src="{thumb}" alt="YouTube thumbnail" style="max-width:100%;height:auto;border:0" /></a></p>')
-                if not first_image:
-                    first_image = thumb
+                watch_url = f"https://www.youtube.com/watch?v={vid}"
+
+                # Try provider HTML via oEmbed (as Ghost does)
+                embed_html = fetch_youtube_oembed_html(watch_url, timeout=10)
+                if embed_html:
+                    parts.append(embed_html)
+                else:
+                    # Fallback: leave the plain URL on its own line so Ghost may still auto-embed
+                    parts.append(f'\n<p>{watch_url}</p>\n')
+
+                # Minimal fallback link (non-intrusive for email/web)
+                parts.append(f'<p><a href="{watch_url}">Voir sur YouTube</a></p>')
             else:
                 # --- Texte + lien
                 ftext = ""
@@ -267,6 +287,7 @@ class GhostTask:
                     if link.get("type") in ("image/jpg", "image/jpeg", "image/png", "image/webp"):
                         imgUrl = link.get("href")
                         if imgUrl:
+                            imgUrl = imgUrl.replace("/250x250/", "/990x320/")
                             if not first_image:
                                 first_image = imgUrl
                             parts.append(f'<figure><img src="{html.escape(imgUrl)}" loading="lazy"></figure>')
@@ -320,7 +341,7 @@ class GhostTask:
         # (Re)charge les feeds
         feeds_file = os.environ.get("FEEDS_FILE", "/data/feeds.txt")
         if not os.path.isfile(feeds_file):
-            feeds_file = os.environ.get("FEEDS_FILE_FALLBACK", r"c:\workspace\Substack_JV\feeds.txt")
+            feeds_file = os.environ.get("FEEDS_FILE_FALLBACK", r"f:\workspace\Substack_JV\feeds.txt")
         feeds: List[RSSfeed] = []
         with open(feeds_file, encoding="utf-8") as f:
             lines = [line.strip() for line in f if line.strip()]
@@ -393,7 +414,7 @@ async def main():
     feeds: List[RSSfeed] = []
     feeds_file = os.environ.get("FEEDS_FILE", "/data/feeds.txt")
     if not os.path.isfile(feeds_file):
-        feeds_file = os.environ.get("FEEDS_FILE_FALLBACK", r"c:\workspace\Substack_JV\feeds.txt")
+        feeds_file = os.environ.get("FEEDS_FILE_FALLBACK", r"f:\workspace\Substack_JV\feeds.txt")
     with open(feeds_file, encoding="utf-8") as f:
         for line in f:
             line = line.strip()