[FFmpeg-devel] [PATCH] cmdutils: allow to specify a stream by its ID.

[Nicolas George]

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.

Signed-off-by: Nicolas George <nicolas.george at normalesup.org>
---
 cmdutils.c                   |    6 ++++++
 doc/avtools-common-opts.texi |    2 ++
 2 files changed, 8 insertions(+)

diff --git a/cmdutils.c b/cmdutils.c
index 2879a42..2c84394 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;
 
diff --git a/doc/avtools-common-opts.texi b/doc/avtools-common-opts.texi
index c25b535..8246a7c 100644
--- a/doc/avtools-common-opts.texi
+++ b/doc/avtools-common-opts.texi
@@ -41,6 +41,8 @@ streams of this type.
 @item p:@var{program_id}[:@var{stream_index}]
 If @var{stream_index} is given, then matches stream number @var{stream_index} in
 program with id @var{program_id}. Otherwise matches all streams in this program.
+ at item #@var{stream_id}
+Matches the stream by format-specific ID.
 @end table
 @section Generic options
 
-- 
1.7.10