ffmpeg: change command line option -dump to work without -loglevel debug

-hex and -dump command line options do nothing unless -loglevel debug is set.

-dump by itself is useful for monitoring live streams (to get the current PTS for example)  however when it is used with -loglevel debug for an RTMP stream, librtmp also dumps the packet data which makes the output too noisy.

do_pkt_dump is only set in check_keyboard_interaction or by the -dump command line option so this change should have no effect on any other parts of the code..
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

ffmpeg.c

@@ -3797,7 +3797,7 @@ static int process_input(int file_index)
     reset_eagain();
 
     if (do_pkt_dump) {
-        av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
+        av_pkt_dump_log2(NULL, AV_LOG_INFO, &pkt, do_hex_dump,
                          is->streams[pkt.stream_index]);
     }
     /* the following test is needed in case new streams appear