videoChangeSize 介绍 视频分辨率不变视频进行压缩,课加片头和水印。采用ffmpeg 进行处理! 软件架构 采用python编写!利用ffmpeg 进行视频处理! 关于环境问题 直接在有python 环境的任何设备都可以运行!当然也可以打包成exe 进行运行! pyinstaller -F main.py
format(width, height, bit_rate)}) print(ff.cmd) ff.run() return _result_path if __name__ == '__main__': print(change_size('C:/Users/123/Desktop/video_20230501_182239.mp4', 'C:/Users/123/Desktop', 960, 540)) 需要注意ffmpy也会调用ffmpeg,所以上面的3个exe也要放在同一路径或者...
nullptr) < 0) { std::cerr << "ERROR: Couldn't find stream information."; return 3; } int videoStream = -1; for (unsigned int i = 0; i < formatCtx->nb_streams; i++) { if (formatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO)...
/* buffer video source: the decoded frames from the decoder will be inserted here. */ snprintf(args, sizeof(args), "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d", ifmt_ctx->streams[0]->codec->width, ifmt_ctx->streams[0]->codec->height, ifmt_ctx->streams[0]...
ffplay-pixel_format rgb24-video_size 320x240-framerate5-i rgb24_320x240.rgb 播放PCM数据 播放PCM 数据文件48000_2_f32le.pcm,指定采样率为 48000 Hz,声道数为 2,格式为 32 位浮点型: 代码语言:javascript 复制 ffplay-ar48000-ac2-f f32le 48000_2_f32le.pcm ...
ffmpeg -f oss -i /dev/dsp -f x11grab -r 30 -s 1280x752 -i :0.0+0+23 output.avi Another thing you can change is the video frame rate (FPS). In the example above we used -r 30 which means capture at 30 FPS. You can change this value to whatever frame rate you want. 这个...
-vol volume change audio volume (256=normal) 设置音频音量,正常情况一般为256 Per-file main options: 每一个文件的主要选项 -f fmt force format 设置格式 -c codec codec name 设置编解码器 -codec codec codec name 设置编解码器 -pre preset preset name 设置预处理集 ...
-vol volume change audio volume (256=normal)Per-file main options: 主选项 -f fmt force format 文件格式 -c codec codec name 编码名称 -codec codec codec name -pre preset preset name -map_metadata outfile[,metadata]:infile[,metadata] set metadata information of outfile from in...
-vol volume change audio volume (256=normal) -af filter_graph set audio filters 1. -i url (input) input file url 转换文件 ffmpeg -i input.mp4 output.avi 提取音频 ffmpeg -i input.mp4 output.mp3 网络转存 ffmpeg -i rtmp://|http:// -c copy output.mp4 ...
Step 2: Change Environment Variables Find Control Panel on your computer. Then selectSystemChoose Advanced tab in the System Properities interface. Click Environment Variables at the bottom. Then click Edit to paste the file path where FFmpeg is saved. Now, FFmpeg is available to use. Just hit...