cmdutils: allow to specify a stream by its ID.

The stream can be specified as "#129" or "#0x81".
It is especially useful for VOBs dumped from a DVD,
where the language-id mapping is available externally
and the probing can find the streams in a random order.

1 files changed, 6 insertions, 0 deletions

diff --git a/cmdutils.c b/cmdutils.c
index 2879a420c1..2c8439499d 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1109,6 +1109,12 @@ int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
                     return 1;
         }
         return 0;
+    } else if (*spec == '#') {
+        int sid;
+        char *endptr;
+        sid = strtol(spec + 1, &endptr, 0);
+        if (!*endptr)
+            return st->id == sid;
     } else if (!*spec) /* empty specifier, matches everything */
         return 1;