-
Notifications
You must be signed in to change notification settings - Fork 6
/
MediaFragmentRecorder.html
283 lines (276 loc) · 11.7 KB
/
MediaFragmentRecorder.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
<!DOCTYPE html>
<html>
<head>
<title>Record media fragments to single webm video using RTCPeerConnection(), RTCRtpSender.replaceTrack(), MediaRecorder()</title>
<!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1542616; https://bugzilla.mozilla.org/show_bug.cgi?id=1544234 -->
</head>
<body>
<h1 id="click">click</h1>
<video id="playlist" src="" controls="true" autoplay="true"></video>
<script>
const captureStream = mediaElement =>
!!mediaElement.mozCaptureStream ? mediaElement.mozCaptureStream() : mediaElement.captureStream();
const createMediaStreamTracks = _ => {
const connection = new RTCPeerConnection();
const tracks = kinds.map(kind => {
return connection.addTransceiver(kind).receiver.track;
});
connection.close();
return tracks;
}
const kinds = ["video", "audio"];
const blobURLS = [];
const urls = Promise.all([{
src: "https://upload.wikimedia.org/wikipedia/commons/a/a4/Xacti-AC8EX-Sample_video-001.ogv",
from: 0,
to: 4
}, {
src: "https://mirrors.creativecommons.org/movingimages/webm/ScienceCommonsJesseDylan_240p.webm#t=10,20",
from: 10,
to: 20
}, {
from: 55,
to: 60,
src: "https://nickdesaulniers.github.io/netfix/demo/frag_bunny.mp4"
}, {
from: 0,
to: 5,
src: "https://raw.githubusercontent.com/w3c/web-platform-tests/master/media-source/mp4/test.mp4"
}, {
from: 0,
to: 5,
src: "https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerBlazes.mp4"
}, {
from: 0,
to: 5,
src: "https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerJoyrides.mp4"
}, {
from: 0,
to: 6,
src: "https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerMeltdowns.mp4#t=0,6"
}].map(async({
from,
to,
src
}) => {
try {
const request = await fetch(src);
const blob = await request.blob();
const blobURL = URL.createObjectURL(blob);
blobURLS.push(blobURL);
const url = new URL(src);
console.log(url.hash);
return blobURL + (url.hash || `#t=${from},${to}`);
} catch (e) {
throw e;
}
}));
let playlist = document.getElementById("playlist");
let recorder;
let resolveResult;
let result;
const promiseResult = new Promise(resolve => resolveResult = resolve);
document.getElementById("click")
.addEventListener("click", async e => {
try {
// create audio and video MediaStreamTrack
const mediaStreamTracks = createMediaStreamTracks();
const [videoTrack, audioTrack] = mediaStreamTracks;
let mediaStream = new MediaStream([videoTrack, audioTrack]);
console.log("initial MediaStream, audio and video MediaStreamTracks", mediaStream, mediaStream.getTracks());
let tracks = 0;
const fromLocalPeerConnection = new RTCPeerConnection();
const toLocalPeerConnection = new RTCPeerConnection();
const fromConnection = new Promise(resolve => fromLocalPeerConnection.addEventListener("icecandidate", async e => {
console.log("from", e);
try {
resolve(toLocalPeerConnection.addIceCandidate(e.candidate ? e.candidate : null));
} catch (e) {
console.error(e);
}
}, {
once: true
}));
const toConnection = new Promise(resolve => toLocalPeerConnection.addEventListener("icecandidate", async e => {
console.log("to", e);
try {
resolve(fromLocalPeerConnection.addIceCandidate(e.candidate ? e.candidate : null));
} catch (e) {
console.error(e);
}
}, {
once: true
}));
fromLocalPeerConnection.addEventListener("negotiationneeded", e => {
console.log(e);
});
toLocalPeerConnection.addEventListener("negotiationneeded", e => {
console.log(e);
});
const unmutePromises = [];
const mediaStreamTrackPromise = new Promise(resolve => {
toLocalPeerConnection.addEventListener("track", event => {
unmutePromises.push(new Promise(res => event.track.addEventListener("unmute", e => {
console.log(e);
res(e.target)
})));
console.log("track event", event);
kinds.splice(kinds.findIndex(({
kind
}) => kind === event.track.kind), 1);
// Wait for both "track" events
if (kinds.length === 0) {
const {
streams: [stream]
} = event;
console.log(stream);
// Reassign stream to initial MediaStream reference
mediaStream = stream;
resolve();
}
});
});
// Add initial audio and video MediaStreamTrack to PeerConnection, pass initial MediaStream
const audioSender = fromLocalPeerConnection.addTrack(audioTrack, mediaStream);
const videoSender = fromLocalPeerConnection.addTrack(videoTrack, mediaStream);
const offer = await fromLocalPeerConnection.createOffer();
await toLocalPeerConnection.setRemoteDescription(offer);
await fromLocalPeerConnection.setLocalDescription(toLocalPeerConnection.remoteDescription);
const answer = await toLocalPeerConnection.createAnswer();
await fromLocalPeerConnection.setRemoteDescription(answer);
await toLocalPeerConnection.setLocalDescription(fromLocalPeerConnection.remoteDescription);
let media = await urls;
let len = media.length;
await fromConnection;
await toConnection;
await mediaStreamTrackPromise;
// Firefox 68 Only first frame of first fragment is recorded
// copy, unshift and play 0.4 second media fragment of first video in media array
// following SecurityError: The operation is insecure. at MediaRecorder.start()
// play full media fragment at index 1 of media array (copied to index 0)
if (!!playlist.mozCaptureStream) {
media.unshift(media[0].replace(/#.+$/, "#t=0,0.1"));
console.log(media);
}
console.log(audioSender, videoSender, mediaStream);
Promise.all(unmutePromises)
.then(tracks => console.log("unmute event", tracks), console.error);
for (const blobURL of media) {
await new Promise(async resolve => {
playlist.addEventListener("play", async e => {
console.log(e, e.target.readyState);
const stream = captureStream(playlist);
const [playlistVideoTrack] = stream.getVideoTracks();
const [playlistAudioTrack] = stream.getAudioTracks();
console.log(playlistVideoTrack.getSettings());
// Replace audio and video MediaStreamTrack with a new media resource
// id of the initial MediaStreamTrack does not change
// replaceTrack() 6.4.3 https://w3c.github.io/webrtc-pc/#dom-rtcrtpsender-replacetrack
// "If sending is true, and withTrack is not null,
// have the sender switch seamlessly to transmitting withTrack
// instead of the sender's existing track."
await videoSender.replaceTrack(playlistVideoTrack);
await audioSender.replaceTrack(playlistAudioTrack);
// initial tracks for Mozilla
if (media.length > len) {
len = media.length;
return false;
}
if (!recorder) {
// Chromium outputs Blob with size 0 Blob {size: 0, type: "video/webm;codecs=vp8,opus"}
// if mediaStream is not attached to a <video> element, set srcObject to a <video> element
// https://bugs.chromium.org/p/chromium/issues/detail?id=952700
if (!playlist.mozCaptureStream) {
playlist.cloneNode(true).srcObject = mediaStream;
}
recorder = new MediaRecorder(mediaStream, {
mimeType: "video/webm;codecs=vp8,opus"
});
recorder.addEventListener("start", e => {
console.log(e);
});
recorder.addEventListener("stop", e => {
console.log(e);
resolveResult(result);
});
recorder.addEventListener("dataavailable", e => {
console.log(e.data);
result = e.data;
});
recorder.addEventListener("error", e => {
console.log(e);
});
recorder.addEventListener("pause", e => {
console.log(e);
});
}
if (recorder && recorder.state === "inactive") {
console.log(playlist.readyState);
try {
recorder.start();
} catch (e) {
console.error(e);
}
} else {
if (recorder && recorder.state === "paused") {
recorder.resume();
}
console.log(recorder);
}
}, {
once: true
});
playlist.addEventListener("pause", e => {
console.log(e);
if (recorder && recorder.state === "recording") {
recorder.pause();
}
// Firefox 68 does not populate MediaStream with audio and video MediaStreamTrack
// when src is set to different media resource then mozCaptureStream()
// executed on same <video> element, remove <video> element, create new <video> element
// https://bugzilla.mozilla.org/show_bug.cgi?id=1544650
playlist.remove();
playlist = document.createElement("video");
playlist.autoplay = true;
document.body.appendChild(playlist);
resolve();
}, {
once: true
});
playlist.src = blobURL;
});
}
recorder.stop();
let blob = await promiseResult;
[audioTrack, videoTrack, ...mediaStream.getTracks()]
.forEach(track => {
track.stop();
track.enabled = false;
console.log(track);
});
fromLocalPeerConnection.close();
toLocalPeerConnection.close();
console.log(blob);
playlist.remove();
const videoStream = document.createElement("video");
videoStream.addEventListener("canplaythrough", e => {
// Firefox 68 40.5 40.5
// Chromium 70 40.7 40.7
// Chromium 73 41.5 41.5
console.log(videoStream.duration, videoStream.seekable.end(0));
blobURLS.forEach(blobURL => URL.revokeObjectURL(blobURL));
});
videoStream.controls = true;
document.body.appendChild(videoStream);
videoStream.src = URL.createObjectURL(blob);
blobURLS.forEach(blobURL => URL.revokeObjectURL(blobURL));
} catch (e) {
console.error(e);
console.trace();
};
}, {
once: true
});
</script>
</body>
</html>