[README.md] Document format_id field in output template section (#6557)

9 years ago · 4d2ad866f3
parent 594f51b859
commit 4d2ad866f3
1 changed files with 1 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -272,6 +272,7 @@ The `-o` option allows users to indicate a template for the output file names. T
 - `autonumber`: The sequence will be replaced by a five-digit number that will be increased with each download, starting at zero.
 - `playlist`: The name or the id of the playlist that contains the video.
 - `playlist_index`: The index of the video in the playlist, a five-digit number.
+ - `format_id`: The sequence will be replaced by the format code specified by `--format`.

 The current default template is `%(title)s-%(id)s.%(ext)s`.