$ffprobe-show_format<文件路径> 下面是输出信息示例及字段含义说明: [FORMAT]filename=http://www.example.com/1.flvnb_streams=2nb_programs=0format_name=flvformat_long_name=FLV (Flash Video)start_time=4088.213000duration=0.000000size=N/Abit_rate=N/Aprobe_score=100TAG:fileSize=0TAG:audiochannels=2...
```bash ffmpeg -f dshow -i audio="麦克风(Realtek Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -fdshow -video_size1920x1080 -framerate 15 -pixel_format yuv420p -i video="screen-capture-recorder" -vcodec h264_qsv...
$ ffprobe -v error -show_entries format=size -of default=noprint_wrappers=1:nokey=1 input.mp4 Output: 368644 正在获取视频的宽度和高度(分辨率) $ ffprobe -v error -select_streams v:0 -show_entries stream=height,width -of csv=s=x:p=0 input.mp4 Output: 1280x720 FFplay用法和示例用法ffpla...
ffmpeg -f dshow -i audio="麦克风(Realtek Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -fdshow -video_size1920x1080 -framerate 15 -pixel_format yuv420p -i video="screen-capture-recorder" -vcodec h264_qsv -b:v 3...
Output: size=368644 1. 如果你只想要没有键的值。 $ ffprobe -v error -show_entries format=size -of default=noprint_wrappers=1:nokey=1 input.mp4 1. Output: 368644 1. 正在获取视频的宽度和高度(分辨率) $ ffprobe -v error -select_streams v:0 -show_entries stream=height,width -of csv=s...
ffmpeg -f dshow -i audio="麦克风(Realtek Audio)"-f dshow -i audio="virtual-audio-capturer"-filter_complex amix=inputs=2:duration=first:dropout_transition=2 -fdshow -video_size1920x1080 -framerate 15 -pixel_format yuv420p -i video="screen-capture-recorder"-vcodec h264_qsv -b:v 3M -...
//上面的命令，默认mp4的audio codec是aac,如果不是，可以都转为最常见的aac。ffmpeg -i test.mp4 -acodec aac -vn output.aac //提取视频 ffmpeg -i input.mp4 -vcodec copy -an output.mp4 //视频剪切 //下面的命令，可以从时间为00:00:15开始，截取5秒钟的视频。ffmpeg -ss 00:00:15 -t 00:00...
//上面的命令,默认mp4的audio codec是aac,如果不是,可以都转为最常见的aac。 ffmpeg -i test.mp4 -acodec aac -vn output.aac //提取视频 ffmpeg -i input.mp4 -vcodec copy -an output.mp4 //视频剪切 //下面的命令,可以从时间为00:00:15开始,截取5秒钟的视频。
pixel formats-layouts show standard channel layouts-sample_fmts show available audio sample formats-dispositions show available stream dispositions-colors show available color names-sources device list sourcesofthe input device-sinks device list sinksofthe output device-hwaccels show availableHWacceleration ...
-sample_fmts show available audio sample formats Global options (affect whole program instead of just one file: -loglevel loglevel set libav* logging level -v loglevel set libav* logging level -report generate a report -max_alloc bytes set maximum size of a single allocated block ...