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I have the MP3 audio file output.mp3 with 00:00:01 length.
I want to convert the audio file to output_test.mp3 with 00:00:50 length.
The audio file should be play repeat at end of length 00:00:50. How to do it?
$imgDir = 'upload/2016/01/tmp_81332';
$ffmpeg = '/usr/bin/ffmpeg';
// Convert Audio Length Path
$convAudioPath = $imgDir."/output.mp3";
$convAudioPath_test = $imgDir."/output_test.mp3";
exec("$ffmpeg -i $convAudioPath -vcodec copy -acodec copy -ss 00:00:00.000 -t 00:00:50.000 $convAudioPath_test");
Advise any idea!
Use
exec("$ffmpeg -stream_loop -1 -i $convAudioPath -vcodec copy -ss 00:00:00.000 -t 00:00:50.000 $convAudioPath_test");
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Closed 3 years ago.
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I'm trying to add the fist 15 seconds from file1.wav to end of file2.wav with ffmpeg.
For this you can create a list.txt of files with inpoint and outpoint, something like this:
file file2.wav
file file1.wav
inpoint 00:00:00.000
outpoint 00:00:15.000
And run:
ffmpeg -f concat -i list.txt -c copy output.wav
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i need to watermark a video file.
i have FF-MPEG Linux server and ff-mpeg is installed by default
plz reply me the command of watermarking for below details
1. The source file is Input.mp4
2. the Target file is Output.mp4
3. the watermark file Watermark.png
please send me the Linux commands.
is there anyone know, please reply soon
According to this site it should be something like:
ffmpeg -i Input.mp4 -i Watermark.png -filter_complex "overlay=10:10" Output.mp4
10:10 are the coordinates from the top and from the right for the overlay. (In this example 10 pixels from the top and 10 pixels from the right)
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Closed 10 years ago.
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Does ffmpeg audio effects like reverb? Can I work with the channels (to detain them, mix)? If so please link to code samples or examples of codes. thanks in advance!
You can use "RUBBERBAND" for changing pitch and tempo of audio,
If you want to change/add effect of audio from video file then use following code with combination of ffmpeg and rubberband
ffmpeg -i w.mpg -vcodec copy -an tmpVideo.mpg
ffmpeg -i w.mpg tmpAudio.wav
rubberband -p 6 tmpAudio.wav tmpAudioRB.wav
ffmpeg -i tmpVideo.mpg -i tmpAudioRB.wav -vcodec copy finalVideow_6.mpg
This will generate a new video file with pitch change in audio
You're looking for SoX, which is like ffmpeg for audio.
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Closed 6 years ago.
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how do I get a list of amplitudes from a audio file using a linux command line tool ?
Do you mean getting all the individual samples as text? SoX can do that.
$ sox file.wav file.dat
will take an audio file file.wav, and generate a text file file.dat with a column for the timebase in seconds, and a column for each audio channel scaled by the maximum possible value.
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I am converting the MP4 video file $output from some images and one audio file.
But now I want to convert the same MP4 video file without audio.
How to do it?
Here is my sample code:
// Convert Video from audio and images
exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -c:a aac -strict experimental -b:a 16k -shortest $output");
Please update my code where I am change.
Disable audio via -an i.e.
exec("$ffmpeg -framerate 1/5 -i $convImgPath -i $convAudioPath -c:v libx264 -an -shortest $output");