diff --git a/examples/VoiceChannel/PlayVideo.js b/examples/VoiceChannel/PlayVideo.js
index 0fb80ef..bb16bcb 100644
--- a/examples/VoiceChannel/PlayVideo.js
+++ b/examples/VoiceChannel/PlayVideo.js
@@ -46,7 +46,9 @@ client.on('ready', async client => {
   const input = 'http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4';
   // Play
   const dispatcher = stream.playVideo(input, {
-    fps: 30,
+    fps: 60,
+    bitrate: 4000,
+    resolution: '1080',
   });
   const dispatcher2 = stream.playAudio(input);
   dispatcher.on('start', () => {
diff --git a/src/client/voice/dispatcher/AnnexBDispatcher.js b/src/client/voice/dispatcher/AnnexBDispatcher.js
index dc4f16f..011a649 100644
--- a/src/client/voice/dispatcher/AnnexBDispatcher.js
+++ b/src/client/voice/dispatcher/AnnexBDispatcher.js
@@ -29,7 +29,6 @@ class AnnexBDispatcher extends VideoDispatcher {
 
   codecCallback(frame) {
     let accessUnit = frame;
-    const nalus = [];
     let offset = 0;
 
     // Extract NALUs from the access unit
@@ -37,25 +36,19 @@ class AnnexBDispatcher extends VideoDispatcher {
       const naluSize = accessUnit.readUInt32BE(offset);
       offset += 4;
       const nalu = accessUnit.subarray(offset, offset + naluSize);
-      nalus.push(nalu);
-      offset += naluSize;
-    }
-
-    nalus.forEach((nalu, index) => {
-      const isLastNal = index === nalus.length - 1;
-
+      const isLastNal = offset + naluSize >= accessUnit.length;
       if (nalu.length <= this.mtu) {
         // If NALU size is within MTU, send it directly
-        this._playChunk(Buffer.concat([this.createHeaderExtension(), nalu]), index + 1 === nalus.length);
+        this._playChunk(Buffer.concat([this.createHeaderExtension(), nalu]), isLastNal);
       } else {
         // If NALU size exceeds MTU, fragment it
         const [naluHeader, naluData] = this._nalFunctions.splitHeader(nalu);
         const dataFragments = this.partitionVideoData(naluData);
 
-        dataFragments.forEach((data, fragmentIndex) => {
+        for (let fragmentIndex = 0; fragmentIndex < dataFragments.length; fragmentIndex++) {
+          const data = dataFragments[fragmentIndex];
           const isFirstPacket = fragmentIndex === 0;
           const isFinalPacket = fragmentIndex === dataFragments.length - 1;
-          const markerBit = isLastNal && isFinalPacket; // Is last packet ?
 
           this._playChunk(
             Buffer.concat([
@@ -63,11 +56,12 @@ class AnnexBDispatcher extends VideoDispatcher {
               this.makeFragmentationUnitHeader(isFirstPacket, isFinalPacket, naluHeader),
               data,
             ]),
-            markerBit,
+            isLastNal && isFinalPacket,
           );
-        });
+        }
       }
-    });
+      offset += naluSize;
+    }
   }
 }
 
diff --git a/src/client/voice/dispatcher/BaseDispatcher.js b/src/client/voice/dispatcher/BaseDispatcher.js
index f1b8bb3..962ef4f 100644
--- a/src/client/voice/dispatcher/BaseDispatcher.js
+++ b/src/client/voice/dispatcher/BaseDispatcher.js
@@ -316,12 +316,12 @@ class BaseDispatcher extends Writable {
   _createPacket(buffer, isLastPacket = false) {
     // Header
     const packetBuffer = Buffer.alloc(12);
-    packetBuffer[0] = (2 << 6) | ((this.extensionEnabled ? 1 : 0) << 4);
+    packetBuffer[0] = this.extensionEnabled ? 0x90 : 0x80; // 0b10000000 | ((this.extensionEnabled ? 1 : 0) << 4);
     packetBuffer[1] = this.payloadType;
 
     if (this.extensionEnabled) {
       if (isLastPacket) {
-        packetBuffer[1] |= 0b10000000;
+        packetBuffer[1] |= 0x80;
       }
     }
 
diff --git a/src/client/voice/dispatcher/VPxDispatcher.js b/src/client/voice/dispatcher/VPxDispatcher.js
index d5c2759..6a4d3de 100644
--- a/src/client/voice/dispatcher/VPxDispatcher.js
+++ b/src/client/voice/dispatcher/VPxDispatcher.js
@@ -25,27 +25,24 @@ class VP8Dispatcher extends VideoDispatcher {
     super(player, highWaterMark, streams, fps);
   }
 
-  makeChunk(buffer, i) {
+  makeChunk(buffer, isFirstFrame) {
     // Make frame
     const headerExtensionBuf = this.createHeaderExtension();
     // Vp8 payload descriptor
     const payloadDescriptorBuf = Buffer.alloc(2);
-    payloadDescriptorBuf[0] = 0x80;
+    payloadDescriptorBuf[0] = isFirstFrame ? 0x90 : 0x80; // Mark S bit, indicates start of frame: payloadDescriptorBuf[0] |= 0b00010000;
     payloadDescriptorBuf[1] = 0x80;
-    if (i == 0) {
-      payloadDescriptorBuf[0] |= 0b00010000; // Mark S bit, indicates start of frame
-    }
     // Vp8 pictureid payload extension
     const pictureIdBuf = Buffer.alloc(2);
-    pictureIdBuf.writeUIntBE(this.count, 0, 2);
-    pictureIdBuf[0] |= 0b10000000;
+    pictureIdBuf.writeUintBE(this.count, 0, 2);
+    pictureIdBuf[0] |= 0x80;
     return Buffer.concat([headerExtensionBuf, payloadDescriptorBuf, pictureIdBuf, buffer]);
   }
 
   codecCallback(chunk) {
     const chunkSplit = this.partitionVideoData(chunk);
     for (let i = 0; i < chunkSplit.length; i++) {
-      this._playChunk(this.makeChunk(chunkSplit[i], i), i + 1 === chunkSplit.length);
+      this._playChunk(this.makeChunk(chunkSplit[i], i == 0), i + 1 === chunkSplit.length);
     }
   }
 }
diff --git a/src/client/voice/player/MediaPlayer.js b/src/client/voice/player/MediaPlayer.js
index 6dd4f80..90a3332 100644
--- a/src/client/voice/player/MediaPlayer.js
+++ b/src/client/voice/player/MediaPlayer.js
@@ -132,6 +132,14 @@ class MediaPlayer extends EventEmitter {
       `${options?.fps}`,
     ];
 
+    if (options?.resolution && options?.resolution !== 'maximum') {
+      args.push('-vf', `scale=-1:${options.resolution}`);
+    }
+
+    if (options?.bitrate && typeof options?.bitrate === 'number') {
+      args.push('-b:v', `${options?.bitrate}K`);
+    }
+
     if (!isStream) {
       args[1] = input;
     }
@@ -144,28 +152,28 @@ class MediaPlayer extends EventEmitter {
 
     // Get stream type
     if (this.voiceConnection.videoCodec == 'VP8') {
-      args.push('-f', 'ivf', '-deadline', 'realtime', '-c:v', options?.copy ? 'copy' : 'libvpx');
+      args.push('-f', 'ivf', '-deadline', 'realtime', '-c:v', 'libvpx');
       // Remove  '-speed', '5' bc bad quality
     }
 
     if (this.voiceConnection.videoCodec == 'H264') {
       args.push(
         '-c:v',
-        options?.copy ? 'copy' : 'libx264',
+        'libx264',
         '-f',
         'h264',
         '-tune',
         'zerolatency',
-        '-pix_fmt',
-        'yuv420p',
+        // '-pix_fmt',
+        // 'yuv420p',
         '-preset',
-        options?.preset || 'faster',
+        options?.presetH26x || 'faster',
         '-profile:v',
         'baseline',
-        '-g',
-        `${options?.fps}`,
-        '-x264-params',
-        `keyint=${options?.fps}:min-keyint=${options?.fps}`,
+        // '-g',
+        // `${options?.fps}`,
+        // '-x264-params',
+        // `keyint=${options?.fps}:min-keyint=${options?.fps}`,
         '-bf',
         '0',
         '-bsf:v',
diff --git a/src/client/voice/util/PlayInterface.js b/src/client/voice/util/PlayInterface.js
index a2a4bbc..6e72e1c 100644
--- a/src/client/voice/util/PlayInterface.js
+++ b/src/client/voice/util/PlayInterface.js
@@ -79,17 +79,19 @@ class PlayInterface {
    * @typedef {Object} VideoOptions
    * @property {number} [seek=0] The time to seek to, will be ignored when playing `ogg/opus` or `webm/opus` streams
    * @property {number} [fps=30] Video fps
-   * @property {boolean} [copy=false] Copy codec ?
+   * @property {'maximum' | '480' | '720' | '1080' | '1440'} [resolution='maximum'] Resoluion (Height)
    * @property {number} [highWaterMark=12] The maximum number of opus packets to make and store before they are
    * actually needed. See https://nodejs.org/en/docs/guides/backpressuring-in-streams/. Setting this value to
    * 1 means that changes in volume will be more instant.
-   * @property {'ultrafast' | 'superfast' | 'veryfast' | 'faster' | 'fast' | 'medium' | 'slow' | 'slower' | 'veryslow'} [preset='veryfast'] ffmpeg preset
+   * @property {'ultrafast' | 'superfast' | 'veryfast' | 'faster' | 'fast' | 'medium' | 'slow' | 'slower' | 'veryslow'} [presetH26x='veryfast'] ffmpeg preset h254 / h265
    * @property {boolean} [hwAccel=false]  Enables hardware accelerated video decoding. Enabling this option might result in an exception
    * being thrown by Ffmpeg process if your system does not support hardware acceleration
    * @property {string[]} [inputFFmpegArgs] input ffmpeg
    * Ex: ['-config1', 'value1', '-config2', 'value2']
    * @property {string[]} [outputFFmpegArgs] output ffmpeg
    * Ex: ['-config1', 'value1', '-config2', 'value2']
+   * @property {number|'auto'} [bitrate=2000] The bitrate (quality) of the video in kbps.
+   * If set to 'auto', ffmpeg will automatically select
    */
 
   /**
diff --git a/typings/index.d.ts b/typings/index.d.ts
index ec37810..f7ed7f6 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -932,10 +932,11 @@ export interface VideoOptions {
   highWaterMark?: number;
   fps?: number;
   hwAccel?: boolean;
-  preset?: 'ultrafast' | 'superfast' | 'veryfast' | 'faster' | 'fast' | 'medium' | 'slow' | 'slower' | 'veryslow';
-  copy?: boolean;
+  presetH26x?: 'ultrafast' | 'superfast' | 'veryfast' | 'faster' | 'fast' | 'medium' | 'slow' | 'slower' | 'veryslow';
   inputFFmpegArgs?: string[];
   outputFFmpegArgs?: string[];
+  resolution?: 'maximum' | '480' | '720' | '1080' | '1440';
+  bitrate?: number | 'auto';
 }
 
 export class BaseDispatcher extends Writable {