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...
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 ...
This paper introduces the design and implementation of a FFMPEG-based stream analysis system. The system supports real-time analysis of media data from a variety type of transmission protocols, media container formats and video / audio coding standards. The system breaks through the limitation of tr...
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) ...
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { FILL(field_order); } /* update the file pointer */ if (*poutbuf_size) { /* fill the data for the current frame */ s->frame_offset = s->next_frame_offset; /* offset of the next frame */ ...
在FFmpeg3.4版本,旧的编解码API已经标记为过时,新版改为异步方式。我们对新旧版本API进行介绍: 1、编码 旧版的视频编码API为avcodec_encode_video2(),音频编码API为avcodec_encode_audio2()。而新版本API统一为avcodec_send_frame/avcodec_receive_packet。
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); ...
这是ffmpeg的第二篇,这篇主要实现一下使用ffmpeg的API实现解码,不使用和上篇的解析器做解析。 流程图 代码流程即如流程图所示,下面讲解一下当中部分函数的作用)。 avformat_open_input 打开输入文件,并读取文件头相关信息 avformat_find_stream_info 读取媒体文件信息。