From ef1fb6320bafe07beac2887bbaf456bb751959a7 Mon Sep 17 00:00:00 2001
From: Jonathan Thomas <jonathan@openshot.org>
Date: Thu, 28 Jun 2018 21:57:56 -0500
Subject: [PATCH] Add new static function to determine if video/audio codecs
 names are valid (#134)

---
 include/FFmpegWriter.h | 3 +++
 src/FFmpegWriter.cpp   | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/FFmpegWriter.h b/include/FFmpegWriter.h
index 28519bda..8343002e 100644
--- a/include/FFmpegWriter.h
+++ b/include/FFmpegWriter.h
@@ -258,6 +258,9 @@ namespace openshot
 		/// Determine if writer is open or closed
 		bool IsOpen() { return is_open; };
 
+		/// Determine if codec name is valid
+		static bool IsValidCodec(string codec_name);
+
 		/// Open writer
 		void Open();
 
diff --git a/src/FFmpegWriter.cpp b/src/FFmpegWriter.cpp
index 8330dee0..b4fb83b8 100644
--- a/src/FFmpegWriter.cpp
+++ b/src/FFmpegWriter.cpp
@@ -296,6 +296,15 @@ void FFmpegWriter::SetOption(StreamType stream, string name, string value)
 
 }
 
+/// Determine if codec name is valid
+bool FFmpegWriter::IsValidCodec(string codec_name) {
+	// Find the codec (if any)
+	if (avcodec_find_encoder_by_name(codec_name.c_str()) == NULL)
+		return false;
+	else
+		return true;
+}
+
 // Prepare & initialize streams and open codecs
 void FFmpegWriter::PrepareStreams()
 {