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I have hundreds of hours of audio files in English that I need to transcript to the same language. Do you know a speech-to-text software that I can use to do it automatically?

  • Obviously, the automatic transcription will not be perfect, but at least it will be useful to start
  • Support English language at least
  • Open source
  • It should runs on Linux, but other platforms are okay
  • The audio files are on MP4, but I can convert them to a different format if it's necessary
  • The result should be simple text files
  • Privacy is important, so I can't use an online service

I imagine it like an application which I could use it like this:

$ transcriber --input 001.mp4 --output 001.txt

With something like this, it will be easy to write a script to transcribe all the audio files.

Thanks,

  • 1
    Is this a one-off transcription run? You might be better off with an online service, e.g. IBM's Watson Speech-to-Text: not open source, obviously, but inexpensive at 2 cents per minute and the first 1000 minutes free. – Rup Jul 19 '16 at 20:22
  • I didn't know that. It's very interesting, but the idea about have it Open Source is to save some money and, the most important, I will not have to worry about privacy issues, because it will run on my computer. – Mario S Jul 20 '16 at 22:55
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    A Google search for speech to text software brings me e.g. to Top Speech Recognition Software Products, but I don't know how independent/good this is. – Jan Doggen Aug 4 '16 at 10:18
  • Possible duplicate of Interview transcription software – Tom Aug 19 '16 at 19:27
  • @JanDoggen Thank you. You touched the right chord! That is what I was looking for. I found this link on Wikipedia en.wikipedia.org/wiki/List_of_speech_recognition_software There's a lot of options, so it's matter to try them. However, I will leave this question open, just in case someone has direct experience with one application or library. – JonDoe297 Aug 23 '16 at 0:36
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This is going to sound somewhat weird, but you can upload it to Youtube (assuming its not copyrighted material) and have it add its auto CC, and download that file.

Far from perfect, but a possible solution.

  • Privacy is important. I updated the question. Thanks anyway, – JonDoe297 Jul 25 '16 at 21:22
  • I understand. Youtube can still be considered as an option, the file can be privated (granted, you'd be uploading it online). I'm actually curious if you do find a better solution – ProjectPokket Jul 26 '16 at 18:20
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I recommend using https://transcribe.wreally.com. Neither your audio file, nor your transcription is transmitted to their website, so your privacy requirement is satisfied. You can use it offline but you have to use it in the Chrome browser. (Unfortunately it does not satisfy your open source requirement.)

It is similar to youtube's transcription process, but better.

  • How is this open source? Can you link to an open source license they provide? – Thomas Weller Aug 21 '16 at 17:54
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    @ThomasWeller - I guess you missed where I wrote "Unfortunately it does not satisfy your open source requirement." JonDoe's request involves many constraints. I was clear about one of them not being satisfied by my suggestion. – aparente001 Aug 22 '16 at 0:11
  • Alright. I think it's ok since you explicitly mention it. If that sentence was in your original post, I must have missed it. Sorry. – Thomas Weller Aug 22 '16 at 20:23
  • @aparente001 What I was looking for is an automatic transcription software. Not only transcription. It was my fault the question was not as clear as I thought. Anyway, I updated it and added a new comment. Thanks. – JonDoe297 Aug 23 '16 at 0:39
  • This is a very difficult problem. It might be doable if it's one speaker, speaking very clearly, with excellent acoustic conditions. The Wreally source I cited does offer this but I haven't tested it. Although it's not open source, this might be a way for you to do a reality check, i.e. check feasibilty.of your idea. – aparente001 Aug 27 '16 at 15:44

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