From bf8c3c45e26b883379dd1cb9a98a5e08c8b0233e Mon Sep 17 00:00:00 2001
From: Thomas Gotwig <ramble.clef0y@icloud.com>
Date: Tue, 23 Jul 2024 20:42:19 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=9A=80=20Speed=20up=20fps=5Fchanger=20on?=
 =?UTF-8?q?=20apple=20silicons=20via=20-c:v=20hevc=5Fvideotoolbox?=
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https://github.com/tgotwig/vidmerger/issues/46
---
 CHANGELOG.md           |  1 +
 src/commanders/_cmd.rs | 13 ++++++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f6a20c..c3c2d1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Speed up fps_changer on Apple Silicons via -c:v hevc_videotoolbox.
 - Videos with changed fps from fps_changer will be stored in <TMP_DIR>/fps_changer.
 - Selector now case-insensitive, so it selects mp4 and MP4 etc.
 
diff --git a/src/commanders/_cmd.rs b/src/commanders/_cmd.rs
index b06652a..a506046 100644
--- a/src/commanders/_cmd.rs
+++ b/src/commanders/_cmd.rs
@@ -11,13 +11,19 @@ use term_painter::Color::BrightBlue;
 use term_painter::ToStyle;
 
 lazy_static! {
+    static ref IS_APPLE_SILICON: bool = cfg!(target_arch = "aarch64");
+    static ref HEVC_ARG: String = if *IS_APPLE_SILICON {
+        String::from("-c:v hevc_videotoolbox")
+    } else {
+        String::from("")
+    };
     static ref MATCHES: ArgMatches = Cli::init().get_matches();
     static ref VERBOSE: bool = MATCHES.is_present("verbose");
 }
 
 pub fn merge(input: String, output: &String) -> Result<Child, std::io::Error> {
     let cmd = format!(
-        "ffmpeg -y -f concat -safe 0 -i {} -c:v hevc_videotoolbox -map 0 -c copy {}",
+        "ffmpeg -y -f concat -safe 0 -i {} -map 0 -c copy {}",
         input, output
     );
 
@@ -35,7 +41,7 @@ pub fn merge_with_chapters(
     output_file_for_chapterer: &str,
 ) -> Result<Child, std::io::Error> {
     let cmd = format!(
-        "ffmpeg -y -i {} -i {} -c:v hevc_videotoolbox -map 0 -map_metadata 1 -codec copy {}",
+        "ffmpeg -y -i {} -i {} -map 0 -map_metadata 1 -codec copy {}",
         &input_file_for_chapterer,
         file_path.to_str().unwrap(),
         output_file_for_chapterer
@@ -61,8 +67,9 @@ pub fn adjust_fps_by_ffmpeg(
     new_file_location: PathBuf,
 ) -> PathBuf {
     let cmd = format!(
-        "ffmpeg -i {} -c:v hevc_videotoolbox -r {} {}",
+        "ffmpeg -i {} {} -r {} {}",
         file_to_merge.to_str().unwrap(),
+        *HEVC_ARG,
         fps_goal,
         new_file_location.to_str().unwrap()
     );