diff --git a/crates/api_clients/seedance2pro/src/requests/mod.rs b/crates/api_clients/seedance2pro/src/requests/mod.rs
index c3defb5199..c335075452 100644
--- a/crates/api_clients/seedance2pro/src/requests/mod.rs
+++ b/crates/api_clients/seedance2pro/src/requests/mod.rs
@@ -1,4 +1,4 @@
 pub mod generate_video;
 pub mod poll_orders;
-pub mod prepare_image_upload;
-pub mod upload_image;
+pub mod prepare_file_upload;
+pub mod upload_file;
diff --git a/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/mod.rs b/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/mod.rs
new file mode 100644
index 0000000000..6de086d735
--- /dev/null
+++ b/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/mod.rs
@@ -0,0 +1,2 @@
+pub mod prepare_file_upload;
+mod request_types;
diff --git a/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/prepare_image_upload.rs b/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/prepare_file_upload.rs
similarity index 68%
rename from crates/api_clients/seedance2pro/src/requests/prepare_image_upload/prepare_image_upload.rs
rename to crates/api_clients/seedance2pro/src/requests/prepare_file_upload/prepare_file_upload.rs
index 0b5bd642a5..32a0b34325 100644
--- a/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/prepare_image_upload.rs
+++ b/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/prepare_file_upload.rs
@@ -2,7 +2,7 @@ use crate::creds::seedance2pro_session::Seedance2ProSession;
 use crate::error::seedance2pro_client_error::Seedance2ProClientError;
 use crate::error::seedance2pro_error::Seedance2ProError;
 use crate::error::seedance2pro_generic_api_error::Seedance2ProGenericApiError;
-use crate::requests::prepare_image_upload::request_types::*;
+use crate::requests::prepare_file_upload::request_types::*;
 use crate::utils::common_headers::FIREFOX_USER_AGENT;
 use chrono::Utc;
 use log::info;
@@ -13,32 +13,35 @@ use wreq_util::Emulation;
 const SIGNED_UPLOAD_URL: &str = "https://seedance2-pro.com/api/trpc/uploads.signedUploadUrl?batch=1";
 
 /// Generates a material path based on the current time.
-/// Format: `materials/YYYYMMDD/<unix_millis>-<random_hex>.png`
-fn generate_material_path() -> String {
+/// Format: `materials/YYYYMMDD/<unix_millis>-<random_hex>.<extension>`
+fn generate_material_path(extension: &str) -> String {
   let now = Utc::now();
   let date_part = now.format("%Y%m%d").to_string();
   let timestamp_millis = now.timestamp_millis();
   let random_hex: u32 = rand::rng().random();
   let hex_part = format!("{:08x}", random_hex);
-  format!("materials/{}/{}-{}.png", date_part, timestamp_millis, hex_part)
+  format!("materials/{}/{}-{}.{}", date_part, timestamp_millis, hex_part, extension)
 }
 
-pub struct PrepareImageUploadArgs<'a> {
+pub struct PrepareFileUploadArgs<'a> {
   pub session: &'a Seedance2ProSession,
+
+  /// File extension without the dot, e.g. "png", "mp4", "mp3".
+  pub extension: String,
 }
 
-pub struct PrepareImageUploadResponse {
-  /// The signed URL to upload the image to (Cloudflare R2 / S3-compatible).
+pub struct PrepareFileUploadResponse {
+  /// The signed URL to upload the file to (Cloudflare R2 / S3-compatible).
   pub upload_url: String,
 
   /// The material path that was generated for this upload.
   pub material_path: String,
 }
 
-pub async fn prepare_image_upload(args: PrepareImageUploadArgs<'_>) -> Result<PrepareImageUploadResponse, Seedance2ProError> {
-  let material_path = generate_material_path();
+pub async fn prepare_file_upload(args: PrepareFileUploadArgs<'_>) -> Result<PrepareFileUploadResponse, Seedance2ProError> {
+  let material_path = generate_material_path(&args.extension);
 
-  info!("Preparing image upload with path: {}", material_path);
+  info!("Preparing file upload with path: {}", material_path);
 
   let client = Client::builder()
     .emulation(Emulation::Firefox143)
@@ -103,7 +106,7 @@ pub async fn prepare_image_upload(args: PrepareImageUploadArgs<'_>) -> Result<Pr
     .data
     .json;
 
-  Ok(PrepareImageUploadResponse {
+  Ok(PrepareFileUploadResponse {
     upload_url,
     material_path,
   })
@@ -120,19 +123,41 @@ mod tests {
 
   #[tokio::test]
   #[ignore] // manually test — requires real cookies
-  async fn test_prepare_image_upload() -> AnyhowResult<()> {
+  async fn test_prepare_file_upload_png() -> AnyhowResult<()> {
     setup_test_logging(LevelFilter::Trace);
     let cookies = get_test_cookies()?;
     let session = Seedance2ProSession::from_cookies_string(cookies);
-    let args = PrepareImageUploadArgs {
+    let args = PrepareFileUploadArgs {
       session: &session,
+      extension: "png".to_string(),
     };
-    let result = prepare_image_upload(args).await?;
+    let result = prepare_file_upload(args).await?;
     println!("Upload URL: {}", result.upload_url);
     println!("Material path: {}", result.material_path);
     assert!(!result.upload_url.is_empty());
     assert!(result.upload_url.contains("cloudflarestorage.com"));
     assert!(result.material_path.starts_with("materials/"));
+    assert!(result.material_path.ends_with(".png"));
+
+    assert_eq!(1, 2); // NB: Intentional failure to check the response.
+    Ok(())
+  }
+
+  #[tokio::test]
+  #[ignore] // manually test — requires real cookies
+  async fn test_prepare_file_upload_mp4() -> AnyhowResult<()> {
+    setup_test_logging(LevelFilter::Trace);
+    let cookies = get_test_cookies()?;
+    let session = Seedance2ProSession::from_cookies_string(cookies);
+    let args = PrepareFileUploadArgs {
+      session: &session,
+      extension: "mp4".to_string(),
+    };
+    let result = prepare_file_upload(args).await?;
+    println!("Upload URL: {}", result.upload_url);
+    println!("Material path: {}", result.material_path);
+    assert!(!result.upload_url.is_empty());
+    assert!(result.material_path.ends_with(".mp4"));
 
     assert_eq!(1, 2); // NB: Intentional failure to check the response.
     Ok(())
diff --git a/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/request_types.rs b/crates/api_clients/seedance2pro/src/requests/prepare_file_upload/request_types.rs
similarity index 100%
rename from crates/api_clients/seedance2pro/src/requests/prepare_image_upload/request_types.rs
rename to crates/api_clients/seedance2pro/src/requests/prepare_file_upload/request_types.rs
diff --git a/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/mod.rs b/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/mod.rs
deleted file mode 100644
index 1508a767ab..0000000000
--- a/crates/api_clients/seedance2pro/src/requests/prepare_image_upload/mod.rs
+++ /dev/null
@@ -1,2 +0,0 @@
-pub mod prepare_image_upload;
-mod request_types;
diff --git a/crates/api_clients/seedance2pro/src/requests/upload_file/mod.rs b/crates/api_clients/seedance2pro/src/requests/upload_file/mod.rs
new file mode 100644
index 0000000000..e24b75ef1b
--- /dev/null
+++ b/crates/api_clients/seedance2pro/src/requests/upload_file/mod.rs
@@ -0,0 +1 @@
+pub mod upload_file;
diff --git a/crates/api_clients/seedance2pro/src/requests/upload_image/upload_image.rs b/crates/api_clients/seedance2pro/src/requests/upload_file/upload_file.rs
similarity index 76%
rename from crates/api_clients/seedance2pro/src/requests/upload_image/upload_image.rs
rename to crates/api_clients/seedance2pro/src/requests/upload_file/upload_file.rs
index 0cb8984fc9..9f426bac03 100644
--- a/crates/api_clients/seedance2pro/src/requests/upload_image/upload_image.rs
+++ b/crates/api_clients/seedance2pro/src/requests/upload_file/upload_file.rs
@@ -9,16 +9,16 @@ use wreq_util::Emulation;
 
 const STATIC_BASE_URL: &str = "https://static.seedance2-pro.com";
 
-pub struct UploadImageArgs {
-  /// The signed upload URL returned by `prepare_image_upload`.
+pub struct UploadFileArgs {
+  /// The signed upload URL returned by `prepare_file_upload`.
   pub upload_url: String,
 
-  /// The raw image bytes to upload.
-  pub image_bytes: Vec<u8>,
+  /// The raw file bytes to upload.
+  pub file_bytes: Vec<u8>,
 }
 
-pub struct UploadImageResponse {
-  /// The public-facing URL for the uploaded image.
+pub struct UploadFileResponse {
+  /// The public-facing URL for the uploaded file.
   /// e.g. `https://static.seedance2-pro.com/materials/20260219/1771463564512-b14bfe90.png`
   pub public_url: String,
 }
@@ -33,8 +33,8 @@ fn build_public_url(upload_url: &str) -> Result<String, Seedance2ProError> {
   Ok(format!("{}{}", STATIC_BASE_URL, path))
 }
 
-pub async fn upload_image(args: UploadImageArgs) -> Result<UploadImageResponse, Seedance2ProError> {
-  info!("Uploading image to: {}", args.upload_url);
+pub async fn upload_file(args: UploadFileArgs) -> Result<UploadFileResponse, Seedance2ProError> {
+  info!("Uploading file to: {}", args.upload_url);
 
   let client = Client::builder()
     .emulation(Emulation::Firefox143)
@@ -53,7 +53,7 @@ pub async fn upload_image(args: UploadImageArgs) -> Result<UploadImageResponse,
     .header("Sec-Fetch-Mode", "cors")
     .header("Sec-Fetch-Site", "cross-site")
     .header("Priority", "u=4")
-    .body(args.image_bytes)
+    .body(args.file_bytes)
     .send()
     .await
     .map_err(|err| Seedance2ProGenericApiError::WreqError(err))?;
@@ -77,7 +77,7 @@ pub async fn upload_image(args: UploadImageArgs) -> Result<UploadImageResponse,
 
   info!("Public URL: {}", public_url);
 
-  Ok(UploadImageResponse { public_url })
+  Ok(UploadFileResponse { public_url })
 }
 
 #[cfg(test)]
@@ -86,8 +86,8 @@ mod tests {
   use crate::creds::seedance2pro_session::Seedance2ProSession;
   use crate::test_utils::get_test_cookies::get_test_cookies;
   use crate::test_utils::setup_test_logging::setup_test_logging;
-  use crate::requests::prepare_image_upload::prepare_image_upload::{
-    prepare_image_upload, PrepareImageUploadArgs,
+  use crate::requests::prepare_file_upload::prepare_file_upload::{
+    prepare_file_upload, PrepareFileUploadArgs,
   };
   use errors::AnyhowResult;
   use log::LevelFilter;
@@ -95,28 +95,29 @@ mod tests {
 
   #[tokio::test]
   #[ignore] // manually test — requires real cookies and a test image
-  async fn test_upload_image() -> AnyhowResult<()> {
+  async fn test_upload_image_file() -> AnyhowResult<()> {
     setup_test_logging(LevelFilter::Trace);
 
     // Step 1: Get a signed upload URL
     let cookies = get_test_cookies()?;
     let session = Seedance2ProSession::from_cookies_string(cookies);
-    let prepare_args = PrepareImageUploadArgs {
+    let prepare_args = PrepareFileUploadArgs {
       session: &session,
+      extension: "jpg".to_string(),
     };
-    let prepare_result = prepare_image_upload(prepare_args).await?;
+    let prepare_result = prepare_file_upload(prepare_args).await?;
     println!("Upload URL: {}", prepare_result.upload_url);
 
     // Step 2: Read a test image
-    let image_bytes = fs::read("/Users/bt/dev/storyteller/artcraft/test_data/image/juno.jpg")?;
-    println!("Image size: {} bytes", image_bytes.len());
+    let file_bytes = fs::read("/Users/bt/dev/storyteller/artcraft/test_data/image/juno.jpg")?;
+    println!("File size: {} bytes", file_bytes.len());
 
     // Step 3: Upload
-    let upload_args = UploadImageArgs {
+    let upload_args = UploadFileArgs {
       upload_url: prepare_result.upload_url,
-      image_bytes,
+      file_bytes,
     };
-    let result = upload_image(upload_args).await?;
+    let result = upload_file(upload_args).await?;
     println!("Public URL: {}", result.public_url);
 
     assert!(result.public_url.starts_with("https://static.seedance2-pro.com/materials/"));
diff --git a/crates/api_clients/seedance2pro/src/requests/upload_image/mod.rs b/crates/api_clients/seedance2pro/src/requests/upload_image/mod.rs
deleted file mode 100644
index a2a1daf0c3..0000000000
--- a/crates/api_clients/seedance2pro/src/requests/upload_image/mod.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub mod upload_image;
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/generate/video/multi_function/seedance_2p0_multi_function_video_gen_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/generate/video/multi_function/seedance_2p0_multi_function_video_gen_handler.rs
index fefa64b091..16b679ef83 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/generate/video/multi_function/seedance_2p0_multi_function_video_gen_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/generate/video/multi_function/seedance_2p0_multi_function_video_gen_handler.rs
@@ -34,10 +34,10 @@ use seedance2pro::creds::seedance2pro_session::Seedance2ProSession;
 use seedance2pro::requests::generate_video::generate_video::{
   generate_video, BatchCount, GenerateVideoArgs, Resolution,
 };
-use seedance2pro::requests::prepare_image_upload::prepare_image_upload::{
-  prepare_image_upload, PrepareImageUploadArgs,
+use seedance2pro::requests::prepare_file_upload::prepare_file_upload::{
+  prepare_file_upload, PrepareFileUploadArgs,
 };
-use seedance2pro::requests::upload_image::upload_image::{upload_image, UploadImageArgs};
+use seedance2pro::requests::upload_file::upload_file::{upload_file, UploadFileArgs};
 use sqlx::Acquire;
 use tokens::tokens::generic_inference_jobs::InferenceJobToken;
 
@@ -389,20 +389,23 @@ async fn upload_to_seedance2pro(
       })?
       .to_vec();
 
-  let prepare_result = prepare_image_upload(PrepareImageUploadArgs { session })
-      .await
-      .map_err(|err| {
-        warn!("Error preparing seedance2pro image upload: {:?}", err);
-        CommonWebError::ServerError
-      })?;
-
-  let upload_result = upload_image(UploadImageArgs {
-    upload_url: prepare_result.upload_url,
-    image_bytes,
+  let prepare_result = prepare_file_upload(PrepareFileUploadArgs {
+    session,
+    extension: "png".to_string(),
   })
       .await
       .map_err(|err| {
-        warn!("Error uploading image to seedance2pro: {:?}", err);
+        warn!("Error preparing seedance2pro file upload: {:?}", err);
+        CommonWebError::ServerError
+      })?;
+
+  let upload_result = upload_file(UploadFileArgs {
+    upload_url: prepare_result.upload_url,
+    file_bytes: image_bytes,
+  })
+      .await
+      .map_err(|err| {
+        warn!("Error uploading file to seedance2pro: {:?}", err);
         CommonWebError::ServerError
       })?;