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var MP4Box = require('mp4box'); // Or whatever import method you prefer.
var mp4boxfile = MP4Box.createFile();
mp4boxfile.onError = function(e) {};
mp4boxfile.onReady = function(info) {};
mp4boxfile.a…
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mp4box.onSamples() will always receive a list of nbSamples samples, regardless of which ones are RAPs. The script below will reproduce the problem.
window.onload = function() {
var mp4box = new M…
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Hello!
I have a workflow where we use MP4Box to stitch chunks of ProRes video together that were produced via a chunked encoding process. This ordinarily works well, and I can use the playlist inpu…
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Hi Team,
We are facing an issue wherein we see an incorrect identification of channel counts in multiple videos, when we check in ffprobe, it comes correct but here in mp4box, somehow it defaults t…
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Hi,
I am using FileReader() to read an mp4 file in chunks.
Initially I read enough of the start of the file to load the metadata in order for onReady(info) to be called.
After this I would like…
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**背景**
Webcodecs支持了Web编码，加上开源的muxer（如mp4box.js）就能使用原生js封装视频文件了；
而在直播场景经常需要在视频流中插入自定义SEI，开放对视频流的操作能力是Webcodecs的动机之一（WebRTC~~做不到~~）；
以下是为了 _验证_ 自定义SEI确实可行，仅是学习笔记，若想在生产使用，需完成标注未完成的任务；
**NALU 组成结构**…
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Mp4Box can do this:
~~~
mp4box -add xr.mp4 -add xr.srt -new ya.mp4
~~~
I did not see a Bento4 tool that can do this
ghost updated
6 years ago
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Hello, I follow these steps to generate encrypted video
ffmpeg -i input.mp4 -an -c copy video_only.mp4
ffmpeg -i input.mp4 -map 0:2 -c copy audio_only.m4a
ffmpeg -i video_only.mp4 -an -vcodec lib…
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The wiki does not mention having to set MP4Box to false if the live video does not display on the web page. Since I don't know what MP4Box does, can someone update the wiki and provide background on …
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I have numerous videos that fail parsing with the following error message:
> `[importer: Error]: failed to find the matched importer.
> Failed to read a file`
These videos play fine, and MP4Box / ff…