Multiple File Conversion with VLC media Player

Question

I have to convert a number of video files to audio format but its very painful and time consuming to convert them one by one. Is there a way to convert them in a batch with VLC player?

Solution 1

If you want to use ffmpeg, you can use the following to extract the audio parts of all WMV files in the current folder to uncompressed WAV (PCM audio):

for f in *.wmv; do ffmpeg -i "$f" "${f%.wmv}.wav"; done

Or MP3 – see the MP3 encoding guide for more info:

for f in *.wmv; do ffmpeg -i "$f" -c:a libmp3lame -q:a 2 "${f%.wmv}.mp3"; done

These are loops for Linux shells like Bash. For Windows, you'd do something like the following:

for %%A IN (*.wmv) DO ffmpeg -i "%%A" "%%A.wav"

Solution 2

It depends on your OS:

• If you have Windows, it is straightforward to do in the UI:
  • VLC -> Media -> Open multiple files.
• If you are a Mac or a Linux user, there are bash scripts (see here).
• The above link also has scripts for windows users, if you prefer.

Apart from VLC, HandBrake is a very powerful platform independent (though it was developed for Mac) conversion app that easily allows batch conversion.

Comments

[matan129]

Do you mean extracting the audio track from each of the video files?

[Sireiz]

Yup, its a wmv file and i want to convert it to mp3 or wav format.

[slhck]

Do you have to use VLC for this?

[Sireiz]

no there is no restrictions.

[Sireiz]

I also want to increase the playback speed to 1.5x in the converted files.

[slhck]

You can use the atempo filter; see: ffmpeg.org/trac/ffmpeg/wiki/How%20to%20speed%20up%20/…

[Sireiz]

its first converting to audio and then increasing the playback speed, isn't it?

[slhck]

It is internally decoding the audio to a raw format, then applying the filter, and then encoding it to either MP3 or PCM audio. You can just insert the filter between -i "$f" and "${f%.wmv}.wav".

[Sireiz]

thank you very much @slhck you r absolutely a skilled person. :)

[bertieb]

Please include the information from the links in your answer :)

[dopexxx]

Updated. I hope that's sufficient