footage: fixed appearance of some metadata, particularly audio metadata

app/codec/ffmpeg/ffmpegdecoder.cpp

@@ -508,7 +508,7 @@ bool FFmpegDecoder::Probe(Footage *f, const QAtomicInt* cancelled)
   if (error_code == 0) {
 
     // Retrieve metadata about the media
-    av_dump_format(fmt_ctx_, 0, filename, 0);
+    avformat_find_stream_info(fmt_ctx_, nullptr);
 
     // Dump it into the Footage object
     for (unsigned int i=0;i<fmt_ctx_->nb_streams;i++) {

app/project/item/footage/footage.cpp

@@ -22,9 +22,10 @@
 
 #include <QCoreApplication>
 
+#include "codec/decoder.h"
 #include "common/timecodefunctions.h"
 #include "common/xmlreadloop.h"
-#include "codec/decoder.h"
+#include "config/config.h"
 #include "ui/icons/icons.h"
 
 Footage::Footage()
@@ -235,8 +236,14 @@ QString Footage::duration()
   } else if (streams_.first()->type() == Stream::kAudio) {
     AudioStreamPtr audio_stream = std::static_pointer_cast<AudioStream>(streams_.first());
 
-    return Timecode::timestamp_to_timecode(streams_.first()->duration(),
-                                           streams_.first()->timebase(),
+    // We show audio time in a timecode corresponding to the default sequence frame rate
+
+    rational rtime = Timecode::timestamp_to_time(streams_.first()->duration(), streams_.first()->timebase());
+
+    int64_t time_in_default_tb = Timecode::time_to_timestamp(rtime, Config::Current()["DefaultSequenceFrameRate"].value<rational>());
+
+    return Timecode::timestamp_to_timecode(time_in_default_tb,
+                                           Config::Current()["DefaultSequenceFrameRate"].value<rational>(),
                                            Timecode::CurrentDisplay());
   }