add new default formats

youtube.sh

@@ -13,16 +13,17 @@ url="$1"
 format="$2"
 
 [[ -z "${url}" ]] && read -p "URL: " url
-[[ -z "${format}" ]] && read -p "Format [opus/flac/m4a/video/hd/fullhd/4k]: " format
+[[ -z "${format}" ]] && read -p "Format [opus/flac/m4a/mp4/video/hd/fullhd/4k]: " format
 
 if [ "$format" == "opus" ]
 then
-    format="--audio-format opus"
+    # https://github.com/yt-dlp/yt-dlp/issues/979
+    format="--audio-format opus -f "ba" --format-sort "abr,codec""
     audio="-x"
     quality="--audio-quality 0"
 elif [ "$format" == "flac" ]
 then
-    format="--audio-format flac"
+    format="--audio-format flac -f "ba" --format-sort "abr,codec""
     audio="-x"
     quality="--audio-quality 0"
 elif [ "$format" == "m4a" ]
@@ -35,16 +36,23 @@ then
     audio="-x"
 elif [ "$format" == "video" ]
 then
-    format="-f 43"
+    # Download and merge the best video-only format and the best audio-only format,
+    # or download the best combined format if video-only format is not available
+
+    # Download the best video available with the largest resolution but no better than 480p,
+    # or the best video with the smallest resolution if there is no video under 480p
+    # Resolution is determined by using the smallest dimension.
+    # So this works correctly for vertical videos as well
+    format="-S "res:480" -f "bv+ba/b""
 elif [ "$format" == "hd" ]
 then
-    format="-f 247+251"
+    format="-S "res:720" -f "bv+ba/b""
 elif [ "$format" == "fullhd" ]
 then
-    format="-f 303+251"
+    format="-S "res:1080" -f "bv+ba/b""
 elif [ "$format" == "4k" ]
 then
-    format="-f 315+251"
+    format="-S "res:2160" -f "bv+ba/b""
 fi
 
 yt-dlp -i -c --socket-timeout 10000 --force-ipv4 --restrict-filenames --embed-thumbnail --embed-metadata --match-filter "!was_live" $format $audio $quality -v $url