feat: support .ogg and .flac output

1 files changed, 4 insertions, 0 deletions

diff --git a/converter/audio.py b/converter/audio.py
index 5a7ec35..98864f6 100644
--- a/converter/audio.py
+++ b/converter/audio.py
@@ -52,6 +52,10 @@ def _encode_args(output_format: str) -> List[str]:
     """Return ffmpeg output codec/bitrate args for the requested container."""
     if output_format == "m4b":
         return ["-c:a", "aac", "-b:a", config.AUDIO_BITRATE]
+    if output_format == "ogg":
+        return ["-c:a", "libvorbis", "-b:a", config.AUDIO_BITRATE]
+    if output_format == "flac":
+        return ["-c:a", "flac"]
     if output_format == "wav":
         # Lossless intermediate for per-chapter scratch audio; avoids
         # generational loss when the final m4b re-encodes to AAC.