Fix CI

Author: ldm0

.github/workflows/ci.yml

@@ -227,7 +227,15 @@ jobs:
           override: true
 
       - name: Install System FFmpeg
-        run: sudo apt-get install ffmpeg
+        run: |
+          sudo apt-get install libavcodec-dev
+          sudo apt-get install libavdevice-dev
+          sudo apt-get install libavfilter-dev
+          sudo apt-get install libavformat-dev
+          sudo apt-get install libavutil-dev
+          sudo apt-get install libpostproc-dev
+          sudo apt-get install libswresample-dev
+          sudo apt-get install libswscale-dev
 
       - name: Binding Build
         run: cargo build --verbose

build.rs

@@ -119,15 +119,15 @@ fn probe_system_ffmpeg() -> Result<(), String> {
     match (&*LIBS)
         .iter()
         .map(|name| "lib".to_owned() + name)
-        .filter_map(|libname| {
+        .find(|libname| {
             pkgconfig::Config::new()
                 .statik(true)
                 // Remove side effect
                 .cargo_metadata(false)
                 .probe(&libname)
                 .is_err()
         }) {
-        Some(libname) => Err(format!("{} not found!", libname)),
+        Some(libname) => Err(format!("{} not found", libname)),
         None => Ok(()),
     }
 }
@@ -150,6 +150,7 @@ fn main() {
         match probe_system_ffmpeg() {
             // No system FFmpeg found, download and build one
             Err(msg) => {
+                eprintln!(msg + "! Try to git clone an FFmpeg and build");
                 // All outputs are stored in ./ffmpeg/build/{bin, lib, share, include}
                 // If no prebuilt FFmpeg libraries provided, we custom build a FFmpeg.
                 env::set_var(