[FFmpeg-devel] [PATCH 1/3] avformat/dashdec: fail on probing non mpd file extension

[Michael Niedermayer <michael@niedermayer.cc>]

Its unexpected that a .avi or other "standard" file turns into a playlist.
The goal of this patch is to avoid this unexpected behavior and possible
privacy or security differences.

This is similar to the same change to hls

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/dashdec.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
index 29d4680c68..294e14150d 100644
--- a/libavformat/dashdec.c
+++ b/libavformat/dashdec.c
@@ -2336,10 +2336,13 @@ static int dash_probe(const AVProbeData *p)
         av_stristr(p->buf, "dash:profile:isoff-live:2011") ||
         av_stristr(p->buf, "dash:profile:isoff-live:2012") ||
         av_stristr(p->buf, "dash:profile:isoff-main:2011") ||
-        av_stristr(p->buf, "3GPP:PSS:profile:DASH1")) {
-        return AVPROBE_SCORE_MAX;
-    }
-    if (av_stristr(p->buf, "dash:profile")) {
+        av_stristr(p->buf, "3GPP:PSS:profile:DASH1") ||
+        av_stristr(p->buf, "dash:profile")) {
+        if (!av_match_ext(p->filename, "mpd")) {
+            av_log(NULL, AV_LOG_ERROR, "Not detecting dash with non standard extension\n");
+            return 0;
+        }
+
         return AVPROBE_SCORE_MAX;
     }
 
-- 
2.17.1

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