HE-AAC for TV Broadcasting. HE-AAC is the predominant codec in most state-of-the-art broadcast and streaming systems. For example, it is part of the DVB toolbox and being used in several European and South American countries. UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0 Example URL: Steps to reproduce the problem: 1. Visit the given URL 2. Watch while the proof-of-concept page downloads chunked HE-AAC v2 (generated using Wowza Streaming Engine's Apple HLS packetizer) What is the expected behavior? The stream is HE-AAC v2 which should work in Chrome, and the stream should play successfully. Cara membuat program perpustakaan menggunakan visual basic 6.0. Dasar Membuat Website Dengan HTML Membuat Website HTML Cara Membuat Website yang paling mudah adalah dengan menggunakan software. Untuk menggunakan, baru memulai Visual Basic Proyek, menambahkan formulir untuk proyek dan paste kode di bawah ini ke dalamnya. How to scan documents and print in vb.net Home. Programming Forum. Software Development Forum Discussion Thread. It and like create my own app that will send printing commands to the printer and scanning commands to the printer to scan documents. Software scanner. Tutorial Cara membuat agar aplikasi Excel support dengan barcode scaner. Tutorial Cara membuat agar aplikasi Excel support dengan barcode scaner. TEC-IT Software 98,284 views. Cara membuat program sederhana visual basic Microsoft Excel. Skip navigation. How to insert images into word document table. How to Setup Printer and Scanner Konica Minolta Bizhub C552. Cara menggunakan scaner. Category People & Blogs. Programming in Visual Basic.Net How to Connect Access Database to VB.Net - Duration. Cara membuat AC kipas angin - Duration. ![]() ![]() What went wrong? The MediaSource API fails with: pipeline: decode error kInitDemuxer Append: stream parsing failed. Data size=15634 append_window_start=0 append_window_end=inf Did this work before? N/A Is it a problem with Flash or HTML5? HTML5 Does this work in other browsers? Yes Chrome version: 45.0.2454.93 Channel: stable OS Version: OS X 10.10 Flash Version: 18,0,0,232 Note that this stream is audio-only, NOT video. The exact same page plays perfectly in Safari. I believe that Chrome should be able to decode and play HE-AAC v2 and that this is a bug in the MediaSource API. Processing The issue is that the decoder needs to be initialized with this info so that it can double the sample rate before it receives the first coded frame. You need to use: - 'audio/mp4; codecs='mp4a.40.5' for HE-AAC - 'audio/mp4; codecs='mp4a.40.2' for LC-AAC I agree this is a huge issue from the broadcaster's perspective. I've encountered a good proportion of Smooth Streaming streams that use implicit HE-AAC signaling. This issue more or less forces you to ignore the mimetype from the manifest and hardcode this info somewhere, which is a pain if you have both LC-AAC and implicit HE-AAC. How to install egreat firmware. Since Silverlight support in chrome has been removed, I've seen quite a lot of broadcasters moving to MSE playback, but not wanting to move to DASH quite yet, and thus keeping their Smooth Streaming streams. For these reasons my opinion is that the decoder should handle this use case and be able to adjust the sample rate if Implicit HE-AAC is encoutered. Sadly my guess is this is a non-trivial change. Processing Cc: [email protected] +acolwell I've tracked this down, need some guidance on what action to take. 'audio/aac' is the right mime-type. Using 'audio/mp4' is wrong because this will cause Chrome to attempt parsing the aac file as an mp4 container. *But*, explicit signalling does not work with 'audio/aac'. MediaSource.isTypeSupported('audio/mp4; codecs='mp4a.40.5') true MediaSource.isTypeSupported('audio/aac; codecs='mp4a.40.5') false IIUC, this is part of the spec.
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