add sabr pot policy

yt_dlp/extractor/youtube/_base.py

@@ -77,6 +77,12 @@ WEB_PO_TOKEN_POLICIES = {
             not_required_for_premium=True,
             not_required_with_player_token=False,
         ),
+        StreamingProtocol.SABR: GvsPoTokenPolicy(
+            required=True,
+            recommended=True,
+            not_required_for_premium=True,
+            not_required_with_player_token=False,
+        ),
         StreamingProtocol.DASH: GvsPoTokenPolicy(
             required=True,
             recommended=True,
@@ -147,6 +153,12 @@ INNERTUBE_CLIENTS = {
                 not_required_for_premium=True,
                 not_required_with_player_token=False,
             ),
+            StreamingProtocol.SABR: GvsPoTokenPolicy(
+                required=True,
+                recommended=True,
+                not_required_for_premium=True,
+                not_required_with_player_token=False,
+            ),
             StreamingProtocol.DASH: GvsPoTokenPolicy(
                 required=True,
                 recommended=True,
@@ -176,6 +188,12 @@ INNERTUBE_CLIENTS = {
                 not_required_for_premium=True,
                 not_required_with_player_token=False,
             ),
+            StreamingProtocol.SABR: GvsPoTokenPolicy(
+                required=True,
+                recommended=True,
+                not_required_for_premium=True,
+                not_required_with_player_token=False,
+            ),
             StreamingProtocol.DASH: GvsPoTokenPolicy(
                 required=True,
                 recommended=True,
@@ -209,6 +227,11 @@ INNERTUBE_CLIENTS = {
                 recommended=True,
                 not_required_with_player_token=True,
             ),
+            StreamingProtocol.SABR: GvsPoTokenPolicy(
+                required=True,
+                recommended=True,
+                not_required_with_player_token=True,
+            ),
             StreamingProtocol.DASH: GvsPoTokenPolicy(
                 required=True,
                 recommended=True,
@@ -260,6 +283,11 @@ INNERTUBE_CLIENTS = {
                 recommended=True,
                 not_required_with_player_token=True,
             ),
+            StreamingProtocol.SABR: GvsPoTokenPolicy(
+                required=True,
+                recommended=True,
+                not_required_with_player_token=True,
+            ),
             # HLS Livestreams require POT 30 seconds in
             # TODO: Rolling out
             StreamingProtocol.HLS: GvsPoTokenPolicy(
@@ -290,6 +318,12 @@ INNERTUBE_CLIENTS = {
                 not_required_for_premium=True,
                 not_required_with_player_token=False,
             ),
+            StreamingProtocol.SABR: GvsPoTokenPolicy(
+                required=True,
+                recommended=True,
+                not_required_for_premium=True,
+                not_required_with_player_token=False,
+            ),
             StreamingProtocol.DASH: GvsPoTokenPolicy(
                 required=True,
                 recommended=True,

yt_dlp/extractor/youtube/_video.py

@@ -3626,6 +3626,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                     po_token = (
                         gvs_pots.get(client_name)
                         or fetch_po_token_func(required=require_po_token or pot_policy.recommended))
+                    if po_token:
+                        if client_name not in gvs_pots:
+                            gvs_pots[client_name] = po_token
 
                     fmt = process_format_stream(fmt_stream, proto, missing_pot=require_po_token and not po_token)
                     if not fmt:
@@ -3662,8 +3665,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
                     if po_token:
                         fmt_url = update_url_query(fmt_url, {'pot': po_token})
-                        if client_name not in gvs_pots:
-                            gvs_pots[client_name] = po_token
 
                     fmt['url'] = fmt_url