Is there a way to trim the end of a file with SoX, in milliseconds, i have tried this:
sox tracks\5_7.mp3 ntracks\05_7.mp3 trim 2 2.195
But, it just says End position is after expected end of audio Even though the file is actually that long.
So im trying to make this song 2.000 seconds long, instead of 2.195, also, im doing this with 600+ files, so it needs to be done from the command line.
Heres my warnings:
sox WARN mp3: MAD lost sync"(this always happens, means nothing)
sox WARN trim: Last 1 position(s) not reached (audio shorter than expected)
sox WARN sox: 'tracks\01_1.mp3' balancing clipped 3 samples; decrease volume?
This audio file goes for "00:00:02.19".
The line entered into the command line was:
sox -v3 tracks\01_1.mp3 ntracks\01_1.mp3 trim 2 0.19 pause
Here is my verbose start:
D:\Stuff\Habbo trax maker\trax maker\mp3support>sox -V3 tracks\01_1.mp3 ntracks\
01_1.mp3 trim 2 0.19
sox: SoX v14.4.0
Input File : 'tracks\01_1.mp3'
Channels : 1
Sample Rate : 44100
Precision : 16-bit
Duration : 00:00:02.19 = 96755 samples = 164.549 CDDA sectors
File Size : 17.6k
Bit Rate : 64.0k
Sample Encoding: MPEG audio (layer I, II or III)
sox INFO sox: Overwriting `ntracks\01_1.mp3'
sox INFO mp3: using MP3 encoding defaults
Output File : 'ntracks\01_1.mp3'
Channels : 1
Sample Rate : 44100
Precision : 24-bit
Sample Encoding: MPEG audio (layer I, II or III)
Comment : 'Processed by SoX'
sox INFO sox: effects chain: input 44100Hz 1 channels
sox INFO sox: effects chain: trim 44100Hz 1 channels
sox INFO sox: effects chain: output 44100Hz 1 channels
sox WARN mp3: MAD lost sync
sox WARN trim: Last 1 position(s) not reached (audio shorter than expected).
If you want to trim with millisecond precision, specify it:
sox in.mp3 out.mp3 trim 2 0.195
Saves 195 milliseconds with an offset of 2 seconds of in.mp3 to out.mp3.
If you only want the first two seconds of the file use trim like this:
sox in.mp3 out.mp3 trim 0 2
If you want to skip the first two seconds of the file use trim like this:
sox in.mp3 out.mp3 trim 2
If you want to trim 195 milliseconds from the end of the file, use gerald's answer.
Excerpt from the manual:
trim start [length|=end]
The optional length parameter gives the length of audio to output after the
start sample and is thus used to trim off the end of the audio.
Alternatively, an absolute end location can be given by preceding it with
an equals sign. Using a value of 0 for the start parameter will allow trimming
off the end only.
Have you tried using the reverse command like this:
sox tracks\5_7.mp3 ntracks\05_7.mp3 reverse trim 0.195 reverse
This should throw away the last 0.195 milliseconds of the file (it works for me).
you should use like this to trim in milliseconds
trim 26.26 =32.3245678
which means it will trim 26.26 seconds to exactly up to 32.3245678 seconds
this will give you the accurate result
with this = option we need to give end of the time instead of the duration with preceding of =
I hope this will resolve your problem
Related
I want to remove completely silence parts from wav files with ffmpeg.
Input wav can be like :
I am using the following ffmpeg command to remove silence part ffmpeg -i input.wav -af silenceremove=stop_periods=-1:stop_duration=0.2:stop_threshold=-45dB output.wav because I understand from the doc that it will remove all silence parts longer than 0.2 s (silence being below -45dB).
But I get that where silence part has only been reduced to around 0.1 wheras I want it to be 0 (no remaining silence).
In Audacity I will use "truncate audio" filter and choose the above parameters to detect silence and in the action part I will choose to truncate to 0: .
This will yield to what I want (ie an audio with no silence part remaining):
Searching on the internet only lead me to what I already do.
So how can I reproduce the output I get from Audacity "Truncate Silence" filter with ffmpeg and remove all silence parts from audio ?
Edit: The output from silencedetect filter is correct: ffmpeg -i input.wav -af silencedetect=0.2:n=-45dB -f null - detects exactly what audacity detects.
Thanks in advance for your help
It looks like the equivalent command to AUdacity's truncate silence behaviour is the following (in bold what is added):
ffmpeg -i input.wav -af silenceremove=start_periods=1:stop_periods=-1:stop_duration=0.2:start_threshold=-45dB:stop_threshold=-45dB output.wav
I am not sure why adding those 2 parameters leads to the expected behaviour but it works although for some files silenceremove can remove more parts than Audacity / silencedetect detect.
I need a little bit help and hope to find that here.
I am using sox for tagging some music with voice tags on my server while user is uploading the file. This is my command which I was using. Everything is working fine.
sox -m {voice_tag_loop} {source_file} {output_file}
Now I want to change something, but don't know how to do that and find no solution.
So the {voice_tag_loop} will be uploaded by user and can have all length e.g. 30 seconds, 20s, 17s or 1 Minute. Don't know that before.
The {source_file} is the music file and can have also different length e.g. 3:13 Min, 4:20Min
How can I mix the {voice_tag_loop} with the {source_file} that the {output_file} has the length of {source_file} but has the {voice_tag_loop} is mixed and looped/ repeated into also with as long the length of the {source_file}
I hope I could explain that, that you can understand that.
Best regards
Just repeat until the source file is exhausted, e.g.:
sox -m "| sox {voice_tag_loop} -p repeat -" {source_file} trim 0 $(soxi -d {source_file})
NB, don't forget the trim bit, otherwise the repeat part will generate an infinite file.
OK I have now the answer for all you wants to mix short audio with long audio and the short one should repeated as long the long audio is.
In my case a small description. The short file will be changed to 44.1kHz and will be looped every 30 seconds. Max 100 times but as long as the long file is. And finally both files will be mixed. This all is one procedure.
sox {short_file} -r 44.1k -p pad 0 30 repeat 100 trim 0 $(sox --i -d {long_file}) | sox - -m {long_file} {output_file}
Regards
this did it for me
sox {short_file} -p repeat 100 trim 0 $(sox --i -d {long_file}) | sox - -m {long_file} {new_file}
I currently have a list of file for which I need to change the sample rate for.
I'recently been aware that this is possible using sox But when I try do it, I keep on getting a error message that sox wav: Premature EOF on .wav input file And causes the audio file to be empty.. it seems like that sox is not able to resample an audio file which input = output... which I kinda need, if I have to convert a whole directory of audio files...
Currently used commands:
~/kaldi-trunk/egs/yesno/s5_k_added$ sox 0_0_0_0_1_1_1_1.wav -r 8000 0_0_0_0_1_1_1_1.wav
sox WARN wav: Premature EOF on .wav input file
:~/kaldi-trunk/egs/yesno/s5_k_added$ play 0_0_0_0_1_1_1_1.wav
0_0_0_0_1_1_1_1.wav:
File Size: 44
Encoding: Signed PCM
Channels: 1 # 16-bit
Samplerate: 8000Hz
Replaygain: off
Duration: unknown
In:0.00% 00:00:00.00 [00:00:00.00] Out:0 [ | ] Clip:0
Done.
How do I resample a directory of audio files?
Try changing the output file name, possible putting it in a different directory if you want to keep the same file name.
For example:
sox 0_0_0_0_1_1_1_1.wav -r 8000 ./out/0_0_0_0_1_1_1_1.wav
I believe sox is attempting to read the file while it is actively changing it, sometimes sox does not create a temporary file to output into.
EDIT: If you have a directory of files you all want to change, use this:
$ mkdir out
$ for file in *; do sox ${file} -r 8000 ./out/${file}; done
I have two audio files one is 10 secs long and other is 17 secs long, I want to mix the files together so that the 17 sec file starts playing from the start, while the 10 sec file will start after 7 seconds into the 17seconds file.
How can I do this?
I followed this link, I also tried other commands mentioned in Sox FAQ, question number 7, but I am unable to mix two files by providing an offset, I also tried the command in command line and the error is same.
The error which I see is
option ` ' not recognized
and the command I used is
sox -m drums.wav "|sox beats.wav -p pad 1.5" out.wav
Edit: It seems to me that the pipe operator "|" is broken, how do I fix this?
My problem is exactly the same as mentioned in this forum
I think there's an issue with ".
Try
sox -m drums.wav '|sox beats.wav -p pad 1.5' out.wav
Would someone kindly recommend a command line utility that can play any section of an audio file specified in milliseconds e.g.
player -start-time=0.1234 end-time=5.6789 audio.wav
None of the audio players that I've come across seem to have this functionality. vlc supports start and end times but in seconds only, while Audacity does not appear to have much in the way of command line options.
sox
You can use sox play with the trim effect:
play audio.wav trim START =END
Which in your case would become:
play audio.wav trim 0.1234 =5.6789
Note that the end can also be specified as a length:
play audio.wav trim 0.1234 2
Which starts playing at 0.1234 and plays 2 seconds of the file.
Also note that the offsets can be specified as number of samples by appending an s to the number.
mplayer
mplayer also supports this:
mplayer -ss START -endpos END audio.wav
ffplay from ffmpeg
ffplay uses similar input parameters but doesn't support absolute end times, so some minor arithmetic is needed:
ffplay -ss START -t $(( END - START )) audio.wav