Could not find codec parameters for stream 0 (Video: h264): unspecified size ffmpeg默认使用udp方式传输,在使用:avformat_find_stream_info 会出现返回 codec_id ==AV_CODEC_ID_NONE 的情况; 如果id = none 的情况在 打开解码器的时候肯定会报错,所以在 执行 avformat_find_stream_info 的时候有必要判断...
在后续中因为要解决avformat_find_stream_info探测流慢的问题,会针对codecpar进行相应的赋值 FFmpeg3.x版本之前的代码 pAVCodecContext = pAVFormatContext->streams[videoIndex]->codec; FFmpeg3.x最佳解决方案 pAVCodecContext = avcodec_alloc_context3(NULL); if (pAVCodecContext == NULL) { printf("Could not ...
FFmpeg外观需要一个WinAPI窗口句柄(HWND)才能将其用作渲染目标。 问题是,在WPF世界的窗户不再有处理。 VideoWindow类解决了这个问题。 <UserControl x:Class="WebEye.StreamPlayerControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/...
smartblur V->V Blur the input video without impacting the outlines. split V->N Pass on the input video to N outputs. stereo3d V->V Convert video stereoscopic 3D view. subtitles V->V Render text subtitles onto input video using the lib ass library. super2xsai V->V Scale the input by...
The video stream can be real-time monitored. The system has been used in the real-... Y Li,D Han,J Yan - International Conference on Digital Image Processing 被引量: 62发表: 2011年 Design and Implementation of a Real-Time Video Stream Analysis System Based on FFMPEG This paper ...
关键词: MPTS multi-screen display FFmpeg SDL 年份: 2014 收藏 引用 批量引用 报错 分享 全部来源 求助全文 知网 相似文献 参考文献Home audio video interoperability implementation for high definition passthrough, on-screen display, and copy protection A method for interfacing a digital set-top box with...
IDXGIAdapter1 adapter =null;varcreationFlags = DeviceCreationFlags.BgraSupport/*| DeviceCreationFlags.VideoSupport*/;// Let FFmpeg failed for VA if does not support itvarcreationFlagsWarp = DeviceCreationFlags.None;if(Environment.OSVersion.Version.Major <=7) ...
AVCodecContext 这是一个描述编解码器上下文的数据结构,包含了众多编解码器需要的参数信息 如果是单纯使用libavcodec,这部分信息需要调 用者进行初始化;如果是使用整个FFMPEG库,这部分信息在调用 av_open_input_file和av_find_stream_info的过程中根据文件的头信息及媒体流内的头部信息完成初始化。其中几个主要 域的释...
The WPF version of the control is implemented using .NET Framework 4 Client Profile The control supports both x86 and x64 platform targets. Background Streaming audio, video and data over the Internet is a very usual thing these days. However, when I tried to find a .NET control to play...
执行推流时,给FFmpegFrameRecorder设置的参数如下(具体代码参见Java CV本地视频流通过帧图片添加文本进行字幕合成): recorder.setAudioBitrate(grabber.getAudioBitrate()); recorder.setSampleRate(grabber.getSampleRate()); recorder.setAudioCodec(avcodec.AV_CODEC_ID_MP3); ...