Thousands of Sonix customers convert their Spanish M4V files to text 
What's the best way to convert Spanish M4V files to text? 
Use Sonix to convert Spanish M4V files to text
Follow these six easy steps to quickly and easily convert your Spanish M4V files to text:
Step 1: Log into your Sonix account
If you don't have one, you can sign up for Sonix's free account—30 minutes of free transcription/translation.
Step 2: Upload your Spanish M4V file
In Sonix, click “Upload” and locate the Spanish M4V file on your computer.
Step 3: Choose language: Spanish
Select Spanish in the dropdown that asks 'What language was spoken?.' Then, click the “Transcribe” button.
Step 4: Sonix transcribes your M4V file
Sonix automatically transcribes your Spanish M4V file and converts it to Spanish text.
Step 5: Polish your Spanish transcript
Edit your Spanish transcript by typing directly into your browser to correct any words that were not transcribed perfectly.
Step 6: Export Spanish text
Export the Spanish text to any format you want including MS Word, PDF, subtitles, or a simple text file.
All done! You have now successfully converted your Spanish M4V file to text!
How to improve the accuracy of your Spanish transcripts?
Start by improving the quality of the Spanish M4V file that you upload to Sonix. Please use high quality recording equipment, recording in a quiet environment, and ensure that your speakers are speaking clearly to ensure that your transcript is as accurate as possible.
Any advice for the Spanish M4V file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Spanish M4V file. By uploading a high quality version of your audio, we can give you the best level of accuracy.
Aside from M4V, do you support other types of audio/video files?
Yes, we do! You can convert the following file types in Spanish with Sonix:
What customers say about Sonix's automated transcription 
I had tried several other software that worked poorly, and was so impressed how well Sonix worked!
I am VERY happy with the transcription! There were a few glitches, but 98% great.
I have been a dialogue system researcher for half a decade now. I had build my own app for doing the transcriptions. Sonix was clearly better than what I had. I made the switch!
Easy to use and it saved me SO much time transcribing.
I am thrilled with the level of accuracy and the easy if which I am able to listen to and adjust the transcript. It’s very user friendly.
I've tried your service, and I love it.
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Convert Spanish M4V files to text with Sonix 
Sonix automatically transcribes and translates your audio/video files in 38+ languages. Easily search, edit, and share your media files. Sonix uses advanced transcription and translation algorithms to convert your Spanish M4V files to text both fast and accurate. Fast, accurate, and affordable. Millions of users from all over the world.
Includes 30 minutes of free transcription