mp4-muxer - npm Package Compare versions

Comparing version 2.2.2 to 2.3.0

build/mp4-muxer.d.ts

@@ -19,9 +19,13 @@ /**
 		/**
-		 * The width of the video, in pixels.
+		 * The width of the video in pixels.
 		 */
 		width: number,
 		/**
-		 * The height of the video, in pixels.
+		 * The height of the video in pixels.
 		 */
-		height: number
+		height: number,
+		/**
+		 * The clockwise rotation of the video in degrees.
+		 */
+		rotation?: 0 | 90 | 180 | 270
 	},
@@ -42,3 +46,3 @@
 		/**
-		 * The sample rate in the audio rate, in samples per second per channel.
+		 * The sample rate of the audio track in samples per second per channel.
 		 */
@@ -45,0 +49,0 @@ sampleRate: number

build/mp4-muxer.js

@@ -94,12 +94,14 @@ "use strict";
   };
-  var fixed16 = (value) => {
-    view.setUint8(0, value);
-    view.setUint8(1, value << 8);
+  var fixed_8_8 = (value) => {
+    view.setInt16(0, __pow(2, 8) * value, false);
     return [bytes[0], bytes[1]];
   };
-  var fixed32 = (value) => {
-    view.setUint16(0, value, false);
-    view.setUint16(2, value << 16, false);
+  var fixed_16_16 = (value) => {
+    view.setInt32(0, __pow(2, 16) * value, false);
     return [bytes[0], bytes[1], bytes[2], bytes[3]];
   };
+  var fixed_2_30 = (value) => {
+    view.setInt32(0, __pow(2, 30) * value, false);
+    return [bytes[0], bytes[1], bytes[2], bytes[3]];
+  };
   var ascii = (text, nullTerminated = false) => {
@@ -118,15 +120,34 @@ let bytes2 = Array(text.length).fill(null).map((_, i) => text.charCodeAt(i));
   };
+  var rotationMatrix = (rotationInDegrees) => {
+    let theta = rotationInDegrees * (Math.PI / 180);
+    let cosTheta = Math.cos(theta);
+    let sinTheta = Math.sin(theta);
+    return [
+      cosTheta,
+      sinTheta,
+      0,
+      -sinTheta,
+      cosTheta,
+      0,
+      0,
+      0,
+      1
+    ];
+  };
+  var IDENTITY_MATRIX = rotationMatrix(0);
+  var matrixToBytes = (matrix) => {
+    return [
+      fixed_16_16(matrix[0]),
+      fixed_16_16(matrix[1]),
+      fixed_2_30(matrix[2]),
+      fixed_16_16(matrix[3]),
+      fixed_16_16(matrix[4]),
+      fixed_2_30(matrix[5]),
+      fixed_16_16(matrix[6]),
+      fixed_16_16(matrix[7]),
+      fixed_2_30(matrix[8])
+    ];
+  };
 
   // src/box.ts
-  var IDENTITY_MATRIX = [
-    65536,
-    0,
-    0,
-    0,
-    65536,
-    0,
-    0,
-    0,
-    1073741824
-  ].map(u32);
   var box = (type, contents, children) => ({
@@ -187,9 +208,9 @@ type,
       // Duration
-      fixed32(1),
+      fixed_16_16(1),
       // Preferred rate
-      fixed16(1),
+      fixed_8_8(1),
       // Preferred volume
       Array(10).fill(0),
       // Reserved
-      IDENTITY_MATRIX,
+      matrixToBytes(IDENTITY_MATRIX),
       // Matrix
@@ -229,11 +250,11 @@ Array(24).fill(0),
       // Alternate group
-      fixed16(track.info.type === "audio" ? 1 : 0),
+      fixed_8_8(track.info.type === "audio" ? 1 : 0),
       // Volume
       u16(0),
       // Reserved
-      IDENTITY_MATRIX,
+      matrixToBytes(rotationMatrix(track.info.type === "video" ? track.info.rotation : 0)),
       // Matrix
-      fixed32(track.info.type === "video" ? track.info.width : 0),
+      fixed_16_16(track.info.type === "video" ? track.info.width : 0),
       // Track width
-      fixed32(track.info.type === "video" ? track.info.height : 0)
+      fixed_16_16(track.info.type === "video" ? track.info.height : 0)
       // Track height
@@ -388,3 +409,3 @@ ]);
     // Packet size
-    fixed32(track.info.sampleRate)
+    fixed_16_16(track.info.sampleRate)
     // Sample rate
@@ -439,3 +460,3 @@ ], [
     // InputSampleRate
-    fixed16(0),
+    fixed_8_8(0),
     // OutputGain
@@ -936,4 +957,9 @@ u8(0)
   validateOptions_fn = function(options) {
-    if (options.video && !SUPPORTED_VIDEO_CODECS2.includes(options.video.codec)) {
-      throw new Error(`Unsupported video codec: ${options.video.codec}`);
+    if (options.video) {
+      if (!SUPPORTED_VIDEO_CODECS2.includes(options.video.codec)) {
+        throw new Error(`Unsupported video codec: ${options.video.codec}`);
+      }
+      if (options.video.rotation !== void 0 && ![0, 90, 180, 270].includes(options.video.rotation)) {
+        throw new Error(`Invalid video rotation: ${options.video.rotation}. Has to be 0, 90, 180 or 270.`);
+      }
     }
@@ -958,2 +984,3 @@ if (options.audio && !SUPPORTED_AUDIO_CODECS2.includes(options.audio.codec)) {
   prepareTracks_fn = function() {
+    var _a;
     if (__privateGet(this, _options).video) {
@@ -966,3 +993,4 @@ __privateSet(this, _videoTrack, {
           width: __privateGet(this, _options).video.width,
-          height: __privateGet(this, _options).video.height
+          height: __privateGet(this, _options).video.height,
+          rotation: (_a = __privateGet(this, _options).video.rotation) != null ? _a : 0
         },
@@ -969,0 +997,0 @@ timescale: 720,

package.json

 {
   "name": "mp4-muxer",
-  "version": "2.2.2",
+  "version": "2.3.0",
   "description": "MP4 multiplexer in pure TypeScript with support for WebCodecs API, video & audio.",
@@ -5,0 +5,0 @@ "main": "./build/mp4-muxer.js",

README.md

@@ -89,3 +89,4 @@ # mp4-muxer - JavaScript MP4 multiplexer
         width: number,
-        height: number
+        height: number,
+        rotation?: 0 | 90 | 180 | 270 // Adds rotation metadata to the file
     },
@@ -92,0 +93,0 @@

No alert changes

Improved metrics

Total package byte prevSize

97982

increased by2.44%

Lines of code

2435

increased by2.53%

Number of lines in readme file

277

increased by0.36%

No dependency changes