Merge pull request #5317 from shun-iwasawa/p/refactor_ffmpeg_format_c…

…heck Refactor FFmpeg format check on launch
opentoonz · Mar 3, 2024 · 6d016bd · 6d016bd
2 parents 9acc058 + 88ac582
commit 6d016bd
Showing 1 changed file with 12 additions and 9 deletions.
diff --git a/toonz/sources/image/ffmpeg/tiio_ffmpeg.cpp b/toonz/sources/image/ffmpeg/tiio_ffmpeg.cpp
@@ -24,15 +24,18 @@ Ffmpeg::Ffmpeg() {
 Ffmpeg::~Ffmpeg() {}
 
 bool Ffmpeg::checkFormat(std::string format) {
-  QStringList args;
-  args << "-formats";
-  QProcess ffmpeg;
-  ThirdParty::runFFmpeg(ffmpeg, args);
-  ffmpeg.waitForFinished();
-  QString results = ffmpeg.readAllStandardError();
-  results += ffmpeg.readAllStandardOutput();
-  ffmpeg.close();
-  std::string strResults = results.toStdString();
+  static std::string strResults = "";
+  if (strResults.empty()) {
+    QStringList args;
+    args << "-formats";
+    QProcess ffmpeg;
+    ThirdParty::runFFmpeg(ffmpeg, args);
+    ffmpeg.waitForFinished();
+    QString results = ffmpeg.readAllStandardError();
+    results += ffmpeg.readAllStandardOutput();
+    ffmpeg.close();
+    strResults = results.toStdString();
+  }
   std::string::size_type n;
   n = strResults.find(format);
   if (n != std::string::npos)