ffplay -video_size 1920x1080 -pixel_format bgra ./out.yuv 按q或ctrl+c停止录制 3.4 录制声音 3.4.1 Windows设备 查询录音设备 支持的录音设备为(麦克风 (Realtek High Definition Audio)) 录制声音ffmpeg -f dshow -i audio="麦克风 (Realtek High Definition Audio)" out.wav 播放声音ffplay ./out.wav...
FFMPEG从功能上划分为几个模块,分别为核心工具(libutils)、媒体格式(libavformat)、编解码(libavcodec)、设备(libavdevice)和后处理(libavfilter, libswscale, libpostproc),分别负责提供公用的功能函数、实现多媒体文件的读包和写包、完成音视频的编解码、管理音视频设备的操作以及进行音视频后处理。 使用FFMPEG 这里指...
发现会报两个错误,一是图像格式不对,二是找不到输出格式 [avfoundation @0x12f809e00]Selectedpixel format(yuv420p)isnot supported by the input device.[avfoundation @0x12f809e00]Supportedpixel formats:[avfoundation @0x12f809e00]uyvy422[avfoundation @0x12f809e00]yuyv422[avfoundation @0x12f809e00...
std::cout << "ptOutFormatContext ->oformat->long_name:" << ptOutFormatContext->oformat->long_name << std::endl; std::cout << "ptOutFormatContext ->oformat->video_codec:" << ptOutFormatContext->oformat->video_codec << std::endl; std::cout << "ptOutFormatContext ->oformat->...
using the ELBG algorithm. ... noformat V->V Force libavfilter not to use any of the specified pixel formats for the input to the next filter. ... trim V->V Pick one continuous section from the input, drop the rest. T.. unsharp V->V Sharpen or blur the input video. ... vecto...
* unspecified pixel formatConsider increasing the value for the 'analyzeduration' and 'probesize' options的错误 * av_read_frame()返回Invalid data found when processing input的错误 * 分析原因:在创建AVIOContext时没有指定seek函数 * 解决方案:因为创建AVIOContext时没有指定io_seek函数并正确实现io_read()...
[avfoundation @ 0x12f809e00] Overriding selected pixel format to use uyvy422 instead. [NULL @ 0x12880cc00] Unable to find a suitable output format for 'rtmp://127.0.0.1:1935/live' rtmp://127.0.0.1:1935/live: Invalid argument 1. ...
("Invalid audio dsp id!\n"); return -1; } if (-1 == ioctl(dsp->audio_fd, SNDCTL_DSP_SETFMT, &dsp->format)) { printf("Failed to set dsp format!\n"); return -1; } if (-1 == ioctl(dsp->audio_fd, SNDCTL_DSP_CHANNELS, &dsp->channels)) { printf("Failed to set dsp ...
* unspecified pixel formatConsider increasing the value for the 'analyzeduration' and 'probesize' options的错误 * av_read_frame()返回Invalid data found when processing input的错误 * 分析原因:在创建AVIOContext时没有指定seek函数 * 解决方案:因为创建AVIOContext时没有指定io_seek函数并正确实现io_read()...
Error:Specified pixel format nv12 is invalid or not supported AVCodec结构体内容 typedefstructAVCodec{/*** Name of the codec implementation.* The name is globally unique among encoders and among decoders (but an* encoder and a decoder can share the same name).* This is the primary way to ...