diff --git a/scripts/generate_api.sh b/scripts/generate_api.sh
index af00d8b..14cb127 100755
--- a/scripts/generate_api.sh
+++ b/scripts/generate_api.sh
@@ -16,7 +16,6 @@ elif [ -f "${ROOT_DIR}/openapi-generator-cli.jar" ]; then
   GENERATOR="java -jar ${ROOT_DIR}/openapi-generator-cli.jar"
 else
   echo "OpenAPI Generator not found. We use openapi-generator-cli 7.17.0. Install with version control:"
-  echo "  - brew:  brew install openapi-generator@7.17"
   echo "  - npm:   npm i -g @openapitools/openapi-generator-cli"
   exit 1
 fi
diff --git a/src/commands/upload/main.rs b/src/commands/upload/main.rs
index 1512884..91e11de 100644
--- a/src/commands/upload/main.rs
+++ b/src/commands/upload/main.rs
@@ -12,7 +12,7 @@ use walkdir::WalkDir;
 use crate::auth;
 use crate::commands::api_config;
 use crate::media::ffmpeg::ensure_ffmpeg_available;
-use crate::media::metadata::extract_media_metadata;
+use crate::media::metadata::{extract_media_metadata, get_ffprobe_json};
 use crate::media::media_file_type::is_audio_file;
 use crate::media::transcode::{
     convert_to_mp3, create_rendition, has_video_streams, is_mxf_file, normalize_audio_to_mp3,
@@ -224,7 +224,8 @@ fn run_recreate_filesystem(args: RecreateFilesystemArgs) -> Result<(), String> {
         .map_err(|e| format!("failed to start runtime: {}", e))?;
 
     for folder_path in in_app_paths {
-        let req = CreateFolderRequest::new(folder_path.clone());
+        let mut req = CreateFolderRequest::new();
+        req.path = Some(Some(folder_path.clone()));
         let response = rt.block_on(api::create_folder_asset_folder_post(
             &cfg,
             req,
@@ -455,6 +456,14 @@ fn run_upload(args: UploadCmdArgs) -> Result<(), String> {
                 source_info.umid = Some(Some(first_with_data.umid.clone()));
             }
         }
+        if is_mxf_file(&file_info.original_path) {
+            if let Ok(Some(probe)) = get_ffprobe_json(&file_info.original_path) {
+                if let serde_json::Value::Object(map) = probe {
+                    source_info.original_ffprobe_metadata =
+                        Some(Some(map.into_iter().collect()));
+                }
+            }
+        }
         related_umids_per_file.push(
             umid.map(|m| m.file_package_umids.iter().map(|u| u.umid.clone()).collect())
                 .unwrap_or_default(),
@@ -791,9 +800,9 @@ fn run_two_queue_pipeline(
                 );
                 preproc_req.generate_time_based_media_description =
                     Some(!disable_description_generation);
+                // related_umid_for_master_clip removed in current API; use override_entity_ids if needed
                 if !file_related_umids.is_empty() {
-                    preproc_req.related_umid_for_master_clip =
-                        Some(Some(file_related_umids));
+                    preproc_req.override_entity_ids = Some(Some(file_related_umids));
                 }
                 let preproc_tasks = api::process_assets_users_assets_preprocess_post(
                     &cfg,
@@ -876,6 +885,14 @@ fn build_single_upload_request(
             source_info.umid = Some(Some(first_with_data.umid.clone()));
         }
     }
+    if is_mxf_file(&file_info.original_path) {
+        if let Ok(Some(probe)) = get_ffprobe_json(&file_info.original_path) {
+            if let serde_json::Value::Object(map) = probe {
+                source_info.original_ffprobe_metadata =
+                    Some(Some(map.into_iter().collect()));
+            }
+        }
+    }
     let req = AssetUploadRequest::new(
         i32::try_from(content_length).unwrap_or(i32::MAX),
         upload_id.clone(),
@@ -1050,8 +1067,7 @@ async fn upload_to_presigned_urls(
                 preproc_req.generate_time_based_media_description =
                     Some(!disable_description_generation);
                 if !file_related_umids.is_empty() {
-                    preproc_req.related_umid_for_master_clip =
-                        Some(Some(file_related_umids));
+                    preproc_req.override_entity_ids = Some(Some(file_related_umids));
                 }
                 if let Err(e) = api::process_assets_users_assets_preprocess_post(
                     &cfg_clone,
diff --git a/src/media/metadata.rs b/src/media/metadata.rs
index 4970694..bc73815 100644
--- a/src/media/metadata.rs
+++ b/src/media/metadata.rs
@@ -27,6 +27,11 @@ pub fn extract_media_metadata(path: &PathBuf) -> Result<MediaMetadata, String> {
     })
 }
 
+/// Returns raw ffprobe JSON (format + streams) for the given file, or None if ffprobe fails.
+pub fn get_ffprobe_json(path: &PathBuf) -> Result<Option<Value>, String> {
+    run_ffprobe_json(path)
+}
+
 #[derive(Debug, Default)]
 pub struct MxfUmids {
     pub material_package_umid: Option<String>,
@@ -37,11 +42,12 @@ fn run_ffprobe_json(path: &PathBuf) -> Result<Option<Value>, String> {
     let output = Command::new("ffprobe")
         .args([
             "-v",
-            "error",
+            "quiet",
+            "-count_frames",
+            "-print_format",
+            "json",
             "-show_format",
             "-show_streams",
-            "-of",
-            "json",
             &path.to_string_lossy(),
         ])
         .output()
diff --git a/src/tellers_api/openapi.tellers_public_api.yaml b/src/tellers_api/openapi.tellers_public_api.yaml
index a588380..7e083fd 100644
--- a/src/tellers_api/openapi.tellers_public_api.yaml
+++ b/src/tellers_api/openapi.tellers_public_api.yaml
@@ -319,8 +319,12 @@ paths:
         Uses default group(s) unless group_id is set (user must have read access to
         that group).
 
+        after: only files with last_edit > after (newer).
+
         before: only files with last_edit < before (older); use the smallest last_edit
-        from a previous page to get the next page.'
+        from a previous page to get the next page.
+
+        filetype: only files with the given file type(s).'
       operationId: get_most_recent_files_asset_most_recent_get
       parameters:
       - name: path
@@ -354,6 +358,15 @@ paths:
             format: date-time
           - type: 'null'
           title: Before
+      - name: after
+        in: query
+        required: false
+        schema:
+          anyOf:
+          - type: string
+            format: date-time
+          - type: 'null'
+          title: After
       - name: x-api-key
         in: header
         required: false
@@ -370,6 +383,16 @@ paths:
           - type: string
           - type: 'null'
           title: Authorization
+      requestBody:
+        content:
+          application/json:
+            schema:
+              anyOf:
+              - type: array
+                items:
+                  $ref: '#/components/schemas/FileType'
+              - type: 'null'
+              title: Filetype
       responses:
         '200':
           description: Successful Response
@@ -391,8 +414,12 @@ paths:
       tags:
       - accepts-api-key
       summary: Create Folder
-      description: 'Create a folder at the given path. Ensures the folder and all
-        ancestor folders exist for the user''s default group.
+      description: 'Create a folder. Either at a path (body.path) or under a parent
+        folder (body.parent_asset_id + body.name).
+
+        Path-based: ensures folder and ancestors exist for the user''s default group.
+
+        Parent-based: parent must be a folder the user has WRITE access to.
 
         Callable with API key (X-Api-Key header) or Bearer token.'
       operationId: create_folder_asset_folder_post
@@ -1185,19 +1212,35 @@ components:
     CreateFolderRequest:
       properties:
         path:
-          type: string
+          anyOf:
+          - type: string
+          - type: 'null'
           title: Path
+        parent_asset_id:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Parent Asset Id
+        name:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Name
       type: object
-      required:
-      - path
       title: CreateFolderRequest
+      description: Either provide path (create at path) or parent_asset_id + name
+        (create under parent).
     CreateFolderResponse:
       properties:
+        id:
+          type: string
+          title: Id
         path:
           type: string
           title: Path
       type: object
       required:
+      - id
       - path
       title: CreateFolderResponse
     FileReference:
@@ -1243,6 +1286,7 @@ components:
       - image
       - placeholder
       - group_clip
+      - aaf
       - folder
       - project
       - entity
@@ -1328,13 +1372,6 @@ components:
             type: array
           - type: 'null'
           title: Override Entity Ids
-        related_umid_for_master_clip:
-          anyOf:
-          - items:
-              type: string
-            type: array
-          - type: 'null'
-          title: Related Umid For Master Clip
       type: object
       required:
       - assets
@@ -1443,6 +1480,17 @@ components:
           - type: string
           - type: 'null'
           title: Capture Device Umid
+        original_file_path:
+          anyOf:
+          - type: string
+          - type: 'null'
+          title: Original File Path
+        original_ffprobe_metadata:
+          anyOf:
+          - additionalProperties: true
+            type: object
+          - type: 'null'
+          title: Original Ffprobe Metadata
       type: object
       required:
       - sourceName