From aa1227aadc977bf1e97af9772770e282cd7eeda8 Mon Sep 17 00:00:00 2001
From: Aloncvt <alon.cvt@gmail.com>
Date: Sun, 5 Oct 2025 00:18:18 +0300
Subject: [PATCH 1/2] added abillity to use custom encoder.

---
 src/encode.rs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/encode.rs b/src/encode.rs
index f302985..a040956 100644
--- a/src/encode.rs
+++ b/src/encode.rs
@@ -243,10 +243,11 @@ impl Encoder {
             .flags()
             .contains(AvFormatFlags::GLOBAL_HEADER);
 
-        let mut writer_stream = writer.output.add_stream(settings.codec())?;
+
+        let mut writer_stream = writer.output.add_stream(settings.encoder)?;
         let writer_stream_index = writer_stream.index();
 
-        let mut encoder_context = match settings.codec() {
+        let mut encoder_context = match settings.encoder {
             Some(codec) => ffi::codec_context_as(&codec)?,
             None => AvContext::new(),
         };
@@ -389,6 +390,7 @@ pub struct Settings {
     pixel_format: AvPixel,
     keyframe_interval: u64,
     options: Options,
+    encoder: Option<AvCodec>
 }
 
 impl Settings {
@@ -415,6 +417,7 @@ impl Settings {
             pixel_format: AvPixel::YUV420P,
             keyframe_interval: Self::KEY_FRAME_INTERVAL,
             options,
+            encoder: Self::codec(&self)
         }
     }
 
@@ -444,6 +447,7 @@ impl Settings {
             pixel_format,
             keyframe_interval: Self::KEY_FRAME_INTERVAL,
             options,
+            encoder: Self::codec(&self)
         }
     }
 
@@ -484,6 +488,13 @@ impl Settings {
         )
     }
 
+    pub fn resolve_encoder(&self, encoder_name: &str) -> Option<AvCodec> {
+        self.encoder = Some(
+            ffmpeg::encoder::find_by_name(encoder_name)
+                .unwrap_or(ffmpeg::encoder::find(AvCodecId::H264)?),
+        )
+    }
+
     /// Get encoder options.
     fn options(&self) -> &Options {
         &self.options

From 9aa85b7d552779fcbfe8b991e46a4428fc1d6ee0 Mon Sep 17 00:00:00 2001
From: Aloncvt <alon.cvt@gmail.com>
Date: Sun, 5 Oct 2025 00:25:16 +0300
Subject: [PATCH 2/2] cleaner code and bug fix.

---
 src/encode.rs | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/encode.rs b/src/encode.rs
index a040956..0c82061 100644
--- a/src/encode.rs
+++ b/src/encode.rs
@@ -488,13 +488,16 @@ impl Settings {
         )
     }
 
-    pub fn resolve_encoder(&self, encoder_name: &str) -> Option<AvCodec> {
-        self.encoder = Some(
-            ffmpeg::encoder::find_by_name(encoder_name)
-                .unwrap_or(ffmpeg::encoder::find(AvCodecId::H264)?),
-        )
+    pub fn with_encoder(mut self, encoder_name: &str) -> Result<Self, Error> {
+        let encoder = ffmpeg::encoder::find_by_name(encoder_name)
+            .or_else(|| ffmpeg::encoder::find(AvCodecId::H264))
+            .ok_or_else(|| Error::EncoderNotFound(encoder_name.to_string()))?;
+
+        self.encoder = Some(encoder);
+        Ok(self)
     }
 
+
     /// Get encoder options.
     fn options(&self) -> &Options {
         &self.options