If you want to use the right channel, write 0.1.1 instead of 0.1.0. However the audio stream will have to be re-encoded.įfmpeg -i video.mp4 -map_channel 0.1.0 -c:v copy mono.mp4įfmpeg -i video.mp4 -map_channel 0.1.0 -map_channel 0.1.0 -c:v copy stereo.mp4 You can modify a video file directly without having to re-encode the video stream. $ ffmpeg -i example.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis example.webm -hide_bannerįfmpeg -i audio.xxx -c:a flac audio.flac Mix Stereo to Mono $ ffmpeg -f image2 -i image%d.jpg imagestovideo.mpg Convert mp4 to webm
$ ffmpeg -i video.flv image%d.jpg Convert Images into a Video Ls * | perl -ne 'print "file $_"' | ffmpeg -f concat -i -c copy merged.mp4 Split a Video into Images 130.5įile names in folder, if they contain spaces, must be properly escaped
Ss offset = frame number divided by FPS of video = the decimal (in milliseconds) ffmpeg needs i.e. $ ffmpeg -ss $1 -i $2 -qmin 1 -q:v 1 -qscale:v 2 -frames:v 1 -huffman optimal $3.jpg
Where vf is a custom bash script as follows: You can get the list of supported formats with:Ĭonvert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:įfmpeg -i input.wav -ac 1 -ab 64000 -ar 22050 output.mp3Ĭonvert any MP3 file to WAV 16khz mono 16bit:įfmpeg -i 111.mp3 -acodec pcm_s16le -ac 1 -ar 16000 out.wavĬonvert any MP3 file to WAV 20khz mono 16bit for ADDAC WAV Player:įfmpeg -i 111.mp3 -acodec pcm_s16le -ac 1 -ar 22050 out.wavįor i in *.mp3 do ffmpeg -i "$i" -acodec pcm_s16le -ac 1 -ar 22050 "$.mp3" doneĮxtract Single Image from a Video at Specified Frame Minimal example: transcode from MP3 to WMA: Ffmpeg Converting Audio into Different Formats / Sample Rates
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