--- a/libavformat/tty.c

+++ b/libavformat/tty.c

@@ -49,7 +49,7 @@ typedef struct TtyDemuxContext {

     AVRational framerate; /**< Set by a private option. */

 } TtyDemuxContext;

-static int read_probe(const AVProbeData *p)

+static int read_probe(AVProbeData *p)

 {

     int cnt = 0;

​