player: add stream selection by ffmpeg index

Apparently using the stream index is the best way to refer to the same
streams across multiple FFmpeg-using programs, even if the stream index
itself is rarely meaningful in any way.

For Matroska, there are some possible problems, depending how FFmpeg
actually adds streams. Normally they seem to match though.

1 files changed, 3 insertions, 0 deletions

diff --git a/options/options.h b/options/options.h
index adbb70e420..c535cce86c 100644
--- a/options/options.h
+++ b/options/options.h
@@ -165,6 +165,9 @@ typedef struct MPOpts {
     int video_id;
     int sub_id;
     int sub2_id;
+    int audio_id_ff;
+    int video_id_ff;
+    int sub_id_ff;
     char **audio_lang;
     char **sub_lang;
     int audio_display;