Avoid use of audio stream timebase for thumbnail framerate

Signed-off-by: Maxime Gervais <[email protected]>

Author: g-maxime

Source/Core/FileInformation.cpp

@@ -1603,12 +1603,12 @@ void FileInformation::makeMkvReport(QString exportFileName, QByteArray attachmen
     FFmpegVideoEncoder::Metadata streamMetadata;
     streamMetadata << FFmpegVideoEncoder::MetadataEntry(QString("title"), QString("Frame Thumbnails"));
 
-    auto timeBase = QString::fromStdString(streamsStats->getStreams().begin()->get()->getTime_base());
+    auto timeBase = streamsStats->getReferenceStream() ? QString::fromStdString(streamsStats->getReferenceStream()->getTime_base()) : QString("1/25");
     auto timeBaseSplitted = timeBase.split("/");
     int num = timeBaseSplitted[0].toInt();
     int den = timeBaseSplitted[1].toInt();
 
-    auto codecTimeBase = QString::fromStdString(streamsStats->getStreams().begin()->get()->getCodec_Time_Base());
+    auto codecTimeBase = streamsStats->getReferenceStream() ? QString::fromStdString(streamsStats->getReferenceStream()->getCodec_Time_Base()) : QString("0/1");
     auto codecTimeBaseSplitted = codecTimeBase.split("/");
     int codecNum = codecTimeBaseSplitted[0].toInt();
     int codecDen = codecTimeBaseSplitted[1].toInt();
@@ -1706,12 +1706,12 @@ void FileInformation::makeMkvReport(QString exportFileName, QByteArray attachmen
             panelSource.height = panelSize().height();
 
             // 2do: take related stream instead of first one
-            auto timeBase = QString::fromStdString(streamsStats->getStreams().begin()->get()->getTime_base());
+            auto timeBase = streamsStats->getReferenceStream() ? QString::fromStdString(streamsStats->getReferenceStream()->getTime_base()) : QString("1/25");
             auto timeBaseSplitted = timeBase.split("/");
             int num = timeBaseSplitted[0].toInt();
             int den = timeBaseSplitted[1].toInt();
 
-            auto codecTimeBase = QString::fromStdString(streamsStats->getStreams().begin()->get()->getCodec_Time_Base());
+            auto codecTimeBase = streamsStats->getReferenceStream() ? QString::fromStdString(streamsStats->getReferenceStream()->getCodec_Time_Base()) : QString("0/1");
             auto codecTimeBaseSplitted = codecTimeBase.split("/");
             int codecNum = codecTimeBaseSplitted[0].toInt();
             int codecDen = codecTimeBaseSplitted[1].toInt();

Source/Core/StreamsStats.cpp

@@ -23,10 +23,11 @@ extern "C"
 
 #include "Core/VideoStreamStats.h"
 #include "Core/AudioStreamStats.h"
+#include "StreamsStats.h"
 
 using namespace tinyxml2;
 
-StreamsStats::StreamsStats(QVector<QAVStream*> qavstreams)
+StreamsStats::StreamsStats(QVector<QAVStream*> qavstreams) : nullCommonStreamStatsPtr(nullptr)
 {
     for (size_t pos = 0; pos < qavstreams.count(); ++pos)
     {
@@ -112,3 +113,18 @@ int StreamsStats::avSampleFormat() const
 
     return AV_SAMPLE_FMT_NONE;
 }
+
+const StreamsStats::CommonStreamStatsPtr& StreamsStats::getReferenceStream() const
+{
+    for(auto& stream : streams) {
+        if(stream->getType() == AVMEDIA_TYPE_VIDEO)
+            return stream;
+    }
+
+    for(auto& stream : streams) {
+        if(stream->getType() == AVMEDIA_TYPE_AUDIO)
+            return stream;
+    }
+
+    return nullCommonStreamStatsPtr;
+}

Source/Core/StreamsStats.h

@@ -33,9 +33,11 @@ class StreamsStats {
     int bitsPerRawVideoSample() const;
     int avSampleFormat() const;
 
+    const CommonStreamStatsPtr& getReferenceStream() const;
     const std::list<CommonStreamStatsPtr>& getStreams() const { return streams; }
 private:
     std::list<CommonStreamStatsPtr> streams;
+    CommonStreamStatsPtr nullCommonStreamStatsPtr;
 };
 
 #endif // StreamsStats_H