Fix macOS CI build by adding platform-specific rsmpeg configuration

- Use rsmpeg 0.18.0 (FFmpeg 8.0) for macOS
- Use rsmpeg 0.17.0 (FFmpeg 7.1) for Windows
- Use rsmpeg 0.14.2 (FFmpeg 6.1) for Linux
- Default remains rsmpeg 0.18.0 for other platforms

Author: prateekmedia

src/rust/Cargo.toml

@@ -14,7 +14,7 @@ crate-type = ["staticlib"]
 log = "0.4.26"
 env_logger = "0.8.4"
 palette = "0.6.1"
-# Default rsmpeg for macOS and other platforms (FFmpeg 8.0)
+# Default rsmpeg (for other platforms)
 rsmpeg = { version = "=0.18.0", default-features = false, features = ["link_system_ffmpeg"], optional = true }
 tesseract-sys = { version = "0.5.15", optional = true, default-features = false }
 leptonica-sys = { version = "= 0.4.6", optional = true, default-features = false }
@@ -28,11 +28,14 @@ lib_ccxr = { path = "lib_ccxr" }
 url = "2.5.4"
 encoding_rs = "0.8.5"
 
-# Platform-specific rsmpeg configurations (overrides default FFmpeg 8.0)
-# Linux uses FFmpeg 6.1, Windows uses FFmpeg 7.1
+# Platform-specific rsmpeg configurations
+# Linux uses FFmpeg 6.1, Windows uses FFmpeg 7.1, macOS uses FFmpeg 8.0
 [target.'cfg(target_os = "linux")'.dependencies]
 rsmpeg = { version = "=0.14.2", default-features = false, features = ["link_system_ffmpeg"], optional = true }
 
+[target.'cfg(target_os = "macos")'.dependencies]
+rsmpeg = { version = "=0.18.0", default-features = false, features = ["link_system_ffmpeg"], optional = true }
+
 [target.'cfg(windows)'.dependencies]
 rsmpeg = { version = "=0.17.0", default-features = false, features = ["link_system_ffmpeg"], optional = true }