Tag：Audio and video
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Android neon accelerated optimization
Neon is a SIMD (single instruction multiple data) instruction set. Its efficiency is equivalent to assembly. It is used for the optimization of ARM CPU platform, and its performance is greatly improved in the fields of audio, video, graphics and image processing. The CPU of arm architecture has supported neon (optional) since armv7a, so as […]
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C# WPF uses D3D to render yuv video data
WPF video rendering series Chapter 1 rendering video with hwndhost Chapter 2 video rendering using D3D (this chapter) Chapter 3 rendering dxva2 data with D3D Chapter 4 rendering video using writeablebitmap The fifth chapter uses ffmpeg (ffplay) to realize the player Article catalogue WPF video rendering series preface 1、 How? 1. Inherit d3dimage D39. Association […]
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Video clips, face stickers, beauty effects, digital image processing technology behind – QT version
What can QT do? In fact, most of them are in some areas where C + + is best at, client software and tool software. What does QT do best? The mainstream industry giants, such as Autodesk’s 3D modeling and animation software Maya, Adobe’s 3D mapping software substancepinter, and Leonardo da Vinci, one of the […]
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Don’t be silly to distinguish avsx H.26X mpeg-x
In the development of audio and video, codec is undoubtedly its core function. The upgrading of codec standards has also greatly promoted the development of audio and video technology and the change of behavior mode. From TV to online video, and now webcast, on-demand, audio and video conference, these changes are inseparable from the update […]
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Flitter audio and video clipping_ Ffmpeg pit notes
flutter_ What is ffmpeg? Ffmpeg is an audio and video processing library, which processes audio and video in the form of command lineIt is the implementation of ffmpeg in the mobile terminal_ Ffmpeg is a package of mobileffmmpeg. Yes, it can easily use ffmpeg to process audio and video under fluent. flutter_ Ffmpeg includes two […]
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Android audio and video capture
Audio and video acquisition In the whole process of audio and video processing, the audio and video acquisition at the transmitting end is undoubtedly the beginning of the whole audio and video link. There are relevant hardware devices on Android or IOS – camera and microphone as input sources. In this chapter, we will analyze […]
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Pano react native SDK is coming! Fast implementation of mobile audio, video and whiteboard
preface React native is a cross platform mobile application development framework opened by Facebook in April 2015, supporting two platforms: IOS and Android.React native focuses on improving the development efficiency of multi platform developmentLearn once, write anywhere。 Born on the shoulder of a giant, react native has a lot of scenery and withstood many tests. […]
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The first audio and video technology conference of Netease ended successfully
The first audio and video technology conference of Netease ended in 2021。 Technical experts from many audio and video fields, such as Netease smart enterprise, Netease game, Netease cloud music, Netease Hangzhou Research Institute and so on, gathered together, combined with their own research and experience for many years, to communicate with the audienceWe have […]
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The latest IOS interview, Tencent five rounds of interview questions record
First, video interview There are many basic questions, because it also involves the development of audio and video, so I also asked some knowledge points about audio and video What are the common attribute modifiers and what should be paid attention to when using copy Difference between deep copy and shallow copy Is atomic really […]
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Android audio and video – Camera + audiorecord data collection
previously on In the last article, I put an audio and video learning roadmap. Later, I will try to update my blog according to this roadmap. First, let’s talk about input. The input source on Android is nothing more than local existing audio and video files or native data collected through audio and video devices […]
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Short video live broadcast system development of live short video program construction of short video interactive live broadcast
There are many short video app systems on the market, but the only difference is that many of them are reselling pirated systems, and the source code service is not guaranteed. Our short video app system is different. We are developed by a team of independent development professional companies. Our team has a very experienced […]
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Android audio and video – mediacodec codec audio and video
previously on In the last blog, we analyzed how to use Android hardware devices (cameras and recording devices) to collect native data. Camera collects and returns YUV data and audiorecord is PCM. We need to encode these data (compression coding). We also analyzed why we do this in the first article of Android audio and […]