printf("fail to read raw data\n"); ret = -1; goto __ERROR; } else if (feof(fp)) { break; } // 第十一步 对读取的数据进行重采样 swr_convert(pSwrCtx, data, pCodecCtx->frame_size, (const uint8_t **)pframe->data, pframe->nb_samples); size = pCodecCtx->frame_size * av...
How to Convert m4a to wav, M4A was developed as a sort of successor for mp3 files, offering higher audio quality alongside Duration: 2:23 Audio Conversion: Converting m4a to wav using Ffmpeg Solution: Converting M4A files to WAV involves transforming them from a compressed format to an uncompr...
幸好,转换工作不用自己做,ffmpeg提供了相应的API: swr_convert(类似以前的audio_resample,只是audio_resample目前已不再推荐使用,因为swr_convert更强大) 示例代码见: 《基于FFmpeg-4.0 SDK的音频重采样》
FFmpeg is a very flexible, powerful, cross-platform, and versatile command-line tool for converting media file formats. It allows you to record, convert and stream audio and video files. It supports all popular audio and video formats. So you don't have
ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg Convert the audio file a.wav and the raw yuv video file a.yuv to mpeg file a.mpg * You can also do audio and video conversions at the same time: ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2 ...
-bits_per_raw_sample number set the number of bits per raw sample -vn disable video -vcodec codec force video codec ('copy' to copy stream) -timecode hh:mm:ss[:;.]ff set initial TimeCode value. -pass n select the pass number (1 to 3) ...
Convert RTP/RAW audio & video codecs in the browser (WASM) lmangani.github.io/ffmpeg-wasm-voip/ Topics ffmpegwasmvoiprtchomerhepic Resources Readme License MIT license Activity Stars 28stars Watchers 3watching Forks 5forks Report repository ...
To set the video bitrate of the output file to 64 kbit/s: ffmpeg -i input.avi -b:v 64k -bufsize 64k output.avi To force the frame rate of the output file to 24 fps: ffmpeg -i input.avi -r 24 output.avi To force the frame rate of the input file (valid for raw formats...
官网的解释是:ffmpeg is a command line tool to convert multimedia files between formats.即:ffmpeg是用来转换不同格式的多媒体文件的一个命令行工具。 二、 FFmpeg功能是什么? FFmpeg有非常强大的功能 ,包括视频采集功能、视频格式转换、视频抓图、给视频加水印等。ffmpeg是用来转换不同格式的多媒体文件的一个命令...
(1)# ffmpeg-f alsa-ac2-ar44100-idefaultout.wav参数介绍:-i 指定声卡设备名称。这里default表示选择默认声卡。 out.wav 捕获的音频数据保存的文件名称-f 是指定音频驱动类型。alsa是linux下音频驱动框架。 oss是另外一种音频框架。-ar<freq>设置音频采样率,以HZ为单位-ac<channels>设置音频通道数(单声道、双...