diff --git a/src/HttpClient.ts b/src/HttpClient.ts
index 018273e..c51247b 100644
--- a/src/HttpClient.ts
+++ b/src/HttpClient.ts
@@ -13,7 +13,6 @@ import axios, { AxiosError, AxiosHeaders, AxiosProgressEvent } from 'axios';
 import ApiVideoError from './ApiVideoError';
 import ProblemDetails from './model/ProblemDetails';
 import { encode } from 'js-base64';
-import { Readable, Stream } from 'stream';
 import AccessToken from './model/AccessToken';
 
 export type QueryOptions = {
@@ -107,25 +106,3 @@ export default class HttpClient {
     }
   }
 }
-
-export async function readableToBuffer(readable: Readable): Promise<Buffer> {
-  const writableStream = new Stream.Writable({
-    defaultEncoding: 'utf-8',
-  });
-  const data: Buffer[] = [];
-  writableStream._write = (chunk, encoding, next) => {
-    data.push(Buffer.from(chunk, encoding));
-    next();
-  };
-
-  return new Promise((resolve, reject) => {
-    Stream.pipeline(readable, writableStream, async (err) => {
-      if (err) {
-        reject(err);
-      }
-
-      const buffer = Buffer.concat(data);
-      resolve(buffer);
-    });
-  });
-}
diff --git a/src/api/AnalyticsApi.ts b/src/api/AnalyticsApi.ts
index 4ce5a5a..b920854 100644
--- a/src/api/AnalyticsApi.ts
+++ b/src/api/AnalyticsApi.ts
@@ -9,7 +9,6 @@
  * Do not edit the class manually.
  */
 
-import { URLSearchParams } from 'url';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import AnalyticsPlaysResponse from '../model/AnalyticsPlaysResponse';
diff --git a/src/api/CaptionsApi.ts b/src/api/CaptionsApi.ts
index 0c66629..2faf670 100644
--- a/src/api/CaptionsApi.ts
+++ b/src/api/CaptionsApi.ts
@@ -9,17 +9,13 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import Caption from '../model/Caption';
 import CaptionsListResponse from '../model/CaptionsListResponse';
 import CaptionsUpdatePayload from '../model/CaptionsUpdatePayload';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData } from '../utils';
 
 /**
  * no description
@@ -41,7 +37,7 @@ export default class CaptionsApi {
   public async upload(
     videoId: string,
     language: string,
-    file: string | Readable | Buffer
+    file: Buffer | Blob | ArrayBuffer
   ): Promise<Caption> {
     const queryParams: QueryOptions = {};
     queryParams.headers = {};
@@ -55,15 +51,8 @@ export default class CaptionsApi {
         'Required parameter language was null or undefined when calling upload.'
       );
     }
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/videos/{videoId}/captions/{language}'
diff --git a/src/api/ChaptersApi.ts b/src/api/ChaptersApi.ts
index 5f2b0d1..0ba196a 100644
--- a/src/api/ChaptersApi.ts
+++ b/src/api/ChaptersApi.ts
@@ -9,16 +9,12 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import Chapter from '../model/Chapter';
 import ChaptersListResponse from '../model/ChaptersListResponse';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData } from '../utils';
 
 /**
  * no description
@@ -40,7 +36,7 @@ export default class ChaptersApi {
   public async upload(
     videoId: string,
     language: string,
-    file: string | Readable | Buffer
+    file: Buffer | Blob | ArrayBuffer
   ): Promise<Chapter> {
     const queryParams: QueryOptions = {};
     queryParams.headers = {};
@@ -54,15 +50,8 @@ export default class ChaptersApi {
         'Required parameter language was null or undefined when calling upload.'
       );
     }
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/videos/{videoId}/chapters/{language}'
diff --git a/src/api/LiveStreamsApi.ts b/src/api/LiveStreamsApi.ts
index 1aca782..2343bb6 100644
--- a/src/api/LiveStreamsApi.ts
+++ b/src/api/LiveStreamsApi.ts
@@ -9,9 +9,6 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
@@ -19,8 +16,7 @@ import LiveStream from '../model/LiveStream';
 import LiveStreamCreationPayload from '../model/LiveStreamCreationPayload';
 import LiveStreamListResponse from '../model/LiveStreamListResponse';
 import LiveStreamUpdatePayload from '../model/LiveStreamUpdatePayload';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData } from '../utils';
 
 /**
  * no description
@@ -328,7 +324,7 @@ export default class LiveStreamsApi {
    */
   public async uploadThumbnail(
     liveStreamId: string,
-    file: string | Readable | Buffer
+    file: Buffer | Blob | ArrayBuffer
   ): Promise<LiveStream> {
     const queryParams: QueryOptions = {};
     queryParams.headers = {};
@@ -337,15 +333,8 @@ export default class LiveStreamsApi {
         'Required parameter liveStreamId was null or undefined when calling uploadThumbnail.'
       );
     }
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/live-streams/{liveStreamId}/thumbnail'
diff --git a/src/api/PlayerThemesApi.ts b/src/api/PlayerThemesApi.ts
index 91738ad..eff1aa8 100644
--- a/src/api/PlayerThemesApi.ts
+++ b/src/api/PlayerThemesApi.ts
@@ -9,9 +9,6 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
@@ -19,8 +16,7 @@ import PlayerTheme from '../model/PlayerTheme';
 import PlayerThemeCreationPayload from '../model/PlayerThemeCreationPayload';
 import PlayerThemeUpdatePayload from '../model/PlayerThemeUpdatePayload';
 import PlayerThemesListResponse from '../model/PlayerThemesListResponse';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData } from '../utils';
 
 /**
  * no description
@@ -302,7 +298,7 @@ export default class PlayerThemesApi {
    */
   public async uploadLogo(
     playerId: string,
-    file: string | Readable | Buffer,
+    file: Buffer | Blob | ArrayBuffer,
     link?: string
   ): Promise<PlayerTheme> {
     const queryParams: QueryOptions = {};
@@ -312,15 +308,8 @@ export default class PlayerThemesApi {
         'Required parameter playerId was null or undefined when calling uploadLogo.'
       );
     }
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/players/{playerId}/logo'
diff --git a/src/api/UploadTokensApi.ts b/src/api/UploadTokensApi.ts
index 2918bd7..ecf5f93 100644
--- a/src/api/UploadTokensApi.ts
+++ b/src/api/UploadTokensApi.ts
@@ -9,7 +9,6 @@
  * Do not edit the class manually.
  */
 
-import { URLSearchParams } from 'url';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import TokenCreationPayload from '../model/TokenCreationPayload';
diff --git a/src/api/VideosApi.ts b/src/api/VideosApi.ts
index 5206408..dee9fd8 100644
--- a/src/api/VideosApi.ts
+++ b/src/api/VideosApi.ts
@@ -9,9 +9,6 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { existsSync, statSync, createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
@@ -23,8 +20,7 @@ import VideoThumbnailPickPayload from '../model/VideoThumbnailPickPayload';
 import VideoUpdatePayload from '../model/VideoUpdatePayload';
 import VideosListResponse from '../model/VideosListResponse';
 import UploadProgressEvent from '../model/UploadProgressEvent';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData, getFileSize } from '../utils';
 
 /**
  * no description
@@ -103,21 +99,21 @@ export default class VideosApi {
       }
 
       uploadPart(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
         return this.upload(file, false, progressListener);
       }
 
       uploadLastPart(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
         return this.upload(file, true, progressListener);
       }
 
       upload(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         isLast: boolean,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
@@ -130,11 +126,7 @@ export default class VideosApi {
           );
         }
 
-        if (!existsSync(file)) {
-          throw new Error(`${file} must be a readable source file`);
-        }
-
-        const length = statSync(file).size;
+        const length = getFileSize(file);
         if (length <= 0) {
           throw new Error(`${file} is empty`);
         }
@@ -147,8 +139,8 @@ export default class VideosApi {
 
         const formData = new FormData();
 
-        const filename = path.basename(file);
-        formData.append(filename, createReadStream(file), filename);
+        const filename = 'file';
+        formData.append(filename, createBufferFromPartialData(file), filename);
         queryParams.body = formData;
         queryParams.headers['Content-Range'] = `part ${this.currentPart}/${
           isLast ? this.currentPart : '*'
@@ -212,7 +204,7 @@ The latter allows you to split a video source into X chunks and send those chunk
    */
   public async upload(
     videoId: string,
-    file: string,
+    file: Buffer | Blob | ArrayBuffer,
     progressListener?: (event: UploadProgressEvent) => void
   ): Promise<Video> {
     const queryParams: QueryOptions = {};
@@ -222,11 +214,7 @@ The latter allows you to split a video source into X chunks and send those chunk
         'Required parameter videoId was null or undefined when calling upload.'
       );
     }
-    if (!existsSync(file)) {
-      throw new Error(`${file} must be a readable source file`);
-    }
-
-    const length = statSync(file).size;
+    const length = getFileSize(file);
     if (length <= 0) {
       throw new Error(`${file} is empty`);
     }
@@ -242,8 +230,8 @@ The latter allows you to split a video source into X chunks and send those chunk
     const chunkSize = this.httpClient.getChunkSize();
     // Upload in a single request when file is small enough
     if (chunkSize > length) {
-      const filename = path.basename(file);
-      formData.append(filename, createReadStream(file), filename);
+      const filename = 'file';
+      formData.append(filename, createBufferFromPartialData(file), filename);
       queryParams.body = formData;
 
       if (progressListener) {
@@ -290,11 +278,11 @@ The latter allows you to split a video source into X chunks and send those chunk
         uploadChunkSize = length - offset;
       }
 
-      const filename = path.basename(file);
+      const filename = 'file';
       const chunkFormData = new FormData();
-      stream = createReadStream(file, {
+      stream = createBufferFromPartialData(file, {
         start: offset,
-        end: uploadChunkSize + offset - 1,
+        end: uploadChunkSize + offset,
       });
       chunkFormData.append(filename, stream, filename);
 
@@ -330,8 +318,6 @@ The latter allows you to split a video source into X chunks and send those chunk
             ''
           ) as Video
       );
-
-      stream.close();
     }
 
     return Promise.resolve(lastBody as Video);
@@ -355,21 +341,21 @@ The latter allows you to split a video source into X chunks and send those chunk
       }
 
       uploadPart(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
         return this.upload(file, false, progressListener);
       }
 
       uploadLastPart(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
         return this.upload(file, true, progressListener);
       }
 
       upload(
-        file: string,
+        file: Buffer | Blob | ArrayBuffer,
         isLast: boolean,
         progressListener?: (event: UploadProgressEvent) => void
       ) {
@@ -382,11 +368,7 @@ The latter allows you to split a video source into X chunks and send those chunk
           );
         }
 
-        if (!existsSync(file)) {
-          throw new Error(`${file} must be a readable source file`);
-        }
-
-        const length = statSync(file).size;
+        const length = getFileSize(file);
         if (length <= 0) {
           throw new Error(`${file} is empty`);
         }
@@ -408,8 +390,8 @@ The latter allows you to split a video source into X chunks and send those chunk
 
         const formData = new FormData();
 
-        const filename = path.basename(file);
-        formData.append(filename, createReadStream(file), filename);
+        const filename = 'file';
+        formData.append(filename, createBufferFromPartialData(file), filename);
         if (this.videoId) {
           formData.append('videoId', this.videoId);
         }
@@ -463,7 +445,7 @@ The latter allows you to split a video source into X chunks and send those chunk
    */
   public async uploadWithUploadToken(
     token: string,
-    file: string,
+    file: Buffer | Blob | ArrayBuffer,
     progressListener?: (event: UploadProgressEvent) => void
   ): Promise<Video> {
     const queryParams: QueryOptions = {};
@@ -473,11 +455,7 @@ The latter allows you to split a video source into X chunks and send those chunk
         'Required parameter token was null or undefined when calling uploadWithUploadToken.'
       );
     }
-    if (!existsSync(file)) {
-      throw new Error(`${file} must be a readable source file`);
-    }
-
-    const length = statSync(file).size;
+    const length = getFileSize(file);
     if (length <= 0) {
       throw new Error(`${file} is empty`);
     }
@@ -503,8 +481,8 @@ The latter allows you to split a video source into X chunks and send those chunk
     const chunkSize = this.httpClient.getChunkSize();
     // Upload in a single request when file is small enough
     if (chunkSize > length) {
-      const filename = path.basename(file);
-      formData.append(filename, createReadStream(file), filename);
+      const filename = 'file';
+      formData.append(filename, createBufferFromPartialData(file), filename);
       queryParams.body = formData;
 
       if (progressListener) {
@@ -551,11 +529,11 @@ The latter allows you to split a video source into X chunks and send those chunk
         uploadChunkSize = length - offset;
       }
 
-      const filename = path.basename(file);
+      const filename = 'file';
       const chunkFormData = new FormData();
-      stream = createReadStream(file, {
+      stream = createBufferFromPartialData(file, {
         start: offset,
-        end: uploadChunkSize + offset - 1,
+        end: uploadChunkSize + offset,
       });
       chunkFormData.append(filename, stream, filename);
 
@@ -591,8 +569,6 @@ The latter allows you to split a video source into X chunks and send those chunk
             ''
           ) as Video
       );
-
-      stream.close();
     }
 
     return Promise.resolve(lastBody as Video);
@@ -879,7 +855,7 @@ Note: There may be a short delay before the new thumbnail is delivered to our CD
    */
   public async uploadThumbnail(
     videoId: string,
-    file: string | Readable | Buffer
+    file: Buffer | Blob | ArrayBuffer
   ): Promise<Video> {
     const queryParams: QueryOptions = {};
     queryParams.headers = {};
@@ -888,15 +864,8 @@ Note: There may be a short delay before the new thumbnail is delivered to our CD
         'Required parameter videoId was null or undefined when calling uploadThumbnail.'
       );
     }
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/videos/{videoId}/thumbnail'
diff --git a/src/api/WatermarksApi.ts b/src/api/WatermarksApi.ts
index 60f48f6..fddd1ff 100644
--- a/src/api/WatermarksApi.ts
+++ b/src/api/WatermarksApi.ts
@@ -9,16 +9,12 @@
  * Do not edit the class manually.
  */
 
-import path from 'path';
-import { createReadStream } from 'fs';
-import { URLSearchParams } from 'url';
 import FormData from 'form-data';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import Watermark from '../model/Watermark';
 import WatermarksListResponse from '../model/WatermarksListResponse';
-import { Readable } from 'stream';
-import { readableToBuffer } from '../HttpClient';
+import { createBufferFromPartialData } from '../utils';
 
 /**
  * no description
@@ -35,18 +31,11 @@ export default class WatermarksApi {
    * Upload a watermark
    * @param file The &#x60;.jpg&#x60; or &#x60;.png&#x60; image to be added as a watermark.
    */
-  public async upload(file: string | Readable | Buffer): Promise<Watermark> {
+  public async upload(file: Buffer | Blob | ArrayBuffer): Promise<Watermark> {
     const queryParams: QueryOptions = {};
     queryParams.headers = {};
-    let fileName = 'file';
-    let fileBuffer = file;
-    if (typeof file === 'string') {
-      fileName = path.basename(file);
-      fileBuffer = createReadStream(file);
-    }
-    if (file instanceof Readable) {
-      fileBuffer = await readableToBuffer(file);
-    }
+    const fileName = 'file';
+    const fileBuffer = createBufferFromPartialData(file);
 
     // Path Params
     const localVarPath = '/watermarks'.substring(1);
diff --git a/src/api/WebhooksApi.ts b/src/api/WebhooksApi.ts
index 83cf0cc..7a4c186 100644
--- a/src/api/WebhooksApi.ts
+++ b/src/api/WebhooksApi.ts
@@ -9,7 +9,6 @@
  * Do not edit the class manually.
  */
 
-import { URLSearchParams } from 'url';
 import ObjectSerializer from '../ObjectSerializer';
 import HttpClient, { QueryOptions } from '../HttpClient';
 import Webhook from '../model/Webhook';
diff --git a/src/model/ProgressiveSession.ts b/src/model/ProgressiveSession.ts
index 8a70ae1..73dcf69 100644
--- a/src/model/ProgressiveSession.ts
+++ b/src/model/ProgressiveSession.ts
@@ -1,4 +1,4 @@
 export default interface ProgressiveSession<T> {
-  uploadPart(file: string): Promise<T>;
-  uploadLastPart(file: string): Promise<T>;
+  uploadPart(file: Buffer | Blob | ArrayBuffer): Promise<T>;
+  uploadLastPart(file: Buffer | Blob | ArrayBuffer): Promise<T>;
 }
diff --git a/test/sandbox.spec.ts b/test/sandbox.spec.ts
index 1f682ec..38d8619 100644
--- a/test/sandbox.spec.ts
+++ b/test/sandbox.spec.ts
@@ -1,9 +1,9 @@
-import { createReadStream } from 'fs';
+import { promises } from 'fs';
+import ApiVideoClient from '../src';
 import PlayerTheme from '../src/model/PlayerTheme';
 import UploadToken from '../src/model/UploadToken';
 import Video from '../src/model/Video';
 import Watermark from '../src/model/Watermark';
-import ApiVideoClient from '../src';
 
 const timeout = (ms = 100) =>
   new Promise((resolve) => {
@@ -59,7 +59,9 @@ describe('ApiVideoClient', () => {
     let watermark: Watermark, watermarkVideo: Video;
     it('should create a watermark', (done) => {
       (async () => {
-        watermark = await client.watermarks.upload('test/data/test.jpg');
+        watermark = await client.watermarks.upload(
+          await promises.readFile('test/data/test.jpg')
+        );
         expect(typeof watermark.watermarkId).toBe('string');
         done();
       })();
@@ -114,10 +116,14 @@ describe('ApiVideoClient', () => {
         const progressiveUploadSession =
           client.videos.createUploadProgressiveSession(video.videoId);
 
-        await progressiveUploadSession.uploadPart('test/data/10m.mp4.part.a');
-        await progressiveUploadSession.uploadPart('test/data/10m.mp4.part.b');
+        await progressiveUploadSession.uploadPart(
+          await await promises.readFile('test/data/10m.mp4.part.a')
+        );
+        await progressiveUploadSession.uploadPart(
+          await promises.readFile('test/data/10m.mp4.part.b')
+        );
         await progressiveUploadSession
-          .uploadLastPart('test/data/10m.mp4.part.c')
+          .uploadLastPart(await promises.readFile('test/data/10m.mp4.part.c'))
           .then((video) => {
             expect(video.title).toEqual(progressiveUploadVideo);
           });
@@ -143,16 +149,16 @@ describe('ApiVideoClient', () => {
             uploadToken.token!
           );
         await progressiveUploadWithTokenSession.uploadPart(
-          'test/data/10m.mp4.part.a'
+          await promises.readFile('test/data/10m.mp4.part.a')
         );
         await progressiveUploadWithTokenSession.uploadPart(
-          'test/data/10m.mp4.part.b'
+          await promises.readFile('test/data/10m.mp4.part.b')
         );
         video = await progressiveUploadWithTokenSession.uploadLastPart(
-          'test/data/10m.mp4.part.c'
+          await promises.readFile('test/data/10m.mp4.part.c')
         );
 
-        expect(video.title).toEqual('10m.mp4.part.a');
+        expect(video.title).toEqual('file');
       });
 
       it('should delete the video and the upload token', async () => {
@@ -174,7 +180,10 @@ describe('ApiVideoClient', () => {
       });
 
       it('should upload', async () => {
-        await client.videos.upload(video.videoId, 'test/data/558k.mp4');
+        await client.videos.upload(
+          video.videoId,
+          await promises.readFile('test/data/558k.mp4')
+        );
       });
 
       it('should delete the video', async () => {
@@ -193,7 +202,10 @@ describe('ApiVideoClient', () => {
       });
 
       it('should upload', async () => {
-        await client.videos.upload(video.videoId, 'test/data/10m.mp4');
+        await client.videos.upload(
+          video.videoId,
+          await promises.readFile('test/data/10m.mp4')
+        );
       });
 
       it('should delete the video', async () => {
@@ -257,7 +269,7 @@ describe('ApiVideoClient', () => {
     it('upload the thumbnails using file path', async () => {
       const thumbnailVideo = await client.videos.uploadThumbnail(
         video.videoId,
-        'test/data/test.jpg'
+        await promises.readFile('test/data/test.jpg')
       );
 
       expect(thumbnailVideo.videoId).toEqual(video.videoId);
@@ -266,7 +278,7 @@ describe('ApiVideoClient', () => {
     it('upload the thumbnails using read stream', async () => {
       const thumbnailVideo = await client.videos.uploadThumbnail(
         video.videoId,
-        createReadStream('test/data/test.jpg')
+        await promises.readFile('test/data/test.jpg')
       );
 
       expect(thumbnailVideo.videoId).toEqual(video.videoId);
@@ -297,7 +309,7 @@ describe('ApiVideoClient', () => {
       const caption = await client.captions.upload(
         video.videoId,
         'en',
-        'test/data/en.vtt'
+        await promises.readFile('test/data/en.vtt')
       );
       expect(caption.srclang).toEqual('en');
       await timeout(1000);
@@ -369,7 +381,7 @@ describe('ApiVideoClient', () => {
     it('add a logo to the player theme', async () => {
       const updatedPlayerTheme = await client.playerThemes.uploadLogo(
         playerTheme.playerId,
-        'test/data/test.png',
+        await promises.readFile('test/data/test.png'),
         'https://api.video'
       );