Table of Contents Solve UnicodeDecodeError: ‘gbk’ codec can’t decode byte 0xab in position 28: illegal multibyte sequence wrong reason Solution Method 1: Specify the correct encoding format Method 2: Use appropriate error handling methods Method 3: Try different encoding formats Summarize Solve UnicodeDecodeError: ‘gbk’ codec can’t decode byte 0xab in position 28: illegal multibyte sequence […]
Tag: codec
c++ library Android h264 encoding ffmpeg uses h264_mediacodec nv21 I420
primary condition: 1. Android version of ffmpeg library (write down the compilation steps later) 2. Set up the Android side to get the stream YUV_420_888 (YUV420P, YUVJ420 is almost the same) 3: Android gets the real resolution of the camera and initializes the encode (reason: the closest YUV resolution comes out of Android) Set resolution: […]
CodeCraft-21 and Codeforces Round 711 (Div. 2)A-F
1.Problem-A-Codeforces (1) Question meaning Find an integer x greater than or equal to n, satisfying gcd(x,sum(dig(x)) > 1, dig represents each digit of x. (2) Ideas The worst case scenario is to satisfy gcd(x,sum(dig(x)) = 2, so there won’t be many enumerations, just violent enumeration is enough. (3) Code #include <bits/stdc + + .h> #define […]
Android development video data MediaCodec real-time encoding, transmission and decoding playback
Background Recently I have been studying MediaCodec codec, so I used the Android screen recording function and used MediaCodec codec real-time transmission to complete the screencasting function. For live broadcast mode or video call mode, you can also refer to the demo implementation of this audio and video real-time codec transmission display. Effect The App […]
MediaCodec Video To Bitmap
1. MediaCodec Overview 1.1 Data transfer The MediaCodec class provides access to low-level media codecs, the encoder/decoder components. It is part of Android’s low-level multimedia support infrastructure and is commonly used with MediaExtractor, MediaSync, MediaMuxer, MediaCrypto, MediaDrm, Image, Surface, and AudioTrack. The following figure is the officially provided MediaCodec data flow diagram: The client inputs […]
Android codec2 coding — based on screen recording
Article directory Preface Android native application srcreenrecord MediaCodec obtains encoding data process Foreword This article is mainly about understanding the Android 12 encoding process. First, start from the upper-layer application to understand the usage of mediacodec provided to external APIs. Then analyze and code the processes in the framework of each process for each API. […]
Flutter development practice-video_player plays multiple videos MediaCodecVideoRenderer error problem
Flutter development practice-video_player plays multiple videos MediaCodecVideoRenderer error problem During the development process, when I used video_player to play multiple videos, a MediaCodecVideoRenderer error occurred. 1. Use video_player to play videos Use video_player to play a single video please see https://blog.csdn.net/gloryFlow/article/details/132124837 Here is a record of solving multiple video MediaCodecVideoRenderer error problems. 2. Add dependencies […]
You can use the ffmpeg command to stream RTSP to RTMP streams, and you can program logic like calling the avcodec/avfilter library.
There is another requirement: We now want to build a multi-channel RTSP pull-stream, RTMP push stream to CDN for live broadcast. Note that it is multi-channel. It turns out that we have two methods. One is to use ffmpeg.exe: ffmpeg -i “rtsp://192.168.0.99:8554/1” -c:v libx264 -c:a aac -f flv “rtmp://127.0.0.1:1935/live/test” Similarly, this method will have a […]
Dubbo’s TelnetCodec source code analysis
Function Overview TelnetCodec is used to implement the codec function specified by telnet on the terminal. Functional analysis Core class TelnetCodec analysis Analysis of main member variables private static final byte[] UP = new byte[] {<!– –>27, 91, 65}; //Up command private static final byte[] DOWN = new byte[] {<!– –>27, 91, 66}; //Downward command […]
Automatically generate the verilog implementation of Hamming codec through MATLAB, including testbench
Directory 1. Algorithm operation rendering preview 2. Algorithm running software version 3. Some core programs 4. Overview of algorithm theory 1. Principle 1.1 Encoding rules 1.2 Error detection and correction 2. Implementation process 2.1 Encoding process 2.2 Decoding process 3. Field of application 3.1 Digital Communication 3.2 Storage system 3.3 ECC memory 3.4 Data transmission […]