Thousands of Sonix customers convert their Chinese (Cantonese) M4V files to text 
What's the best way to convert Chinese (Cantonese) M4V files to text? 
Use Sonix to convert Chinese (Cantonese) M4V files to text
Follow these six easy steps to quickly and easily convert your Chinese (Cantonese) 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 Chinese (Cantonese) M4V file
In Sonix, click “Upload” and locate the Chinese (Cantonese) M4V file on your computer.
Step 3: Choose language: Chinese (Cantonese)
Select Chinese (Cantonese) 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 Chinese (Cantonese) M4V file and converts it to Chinese (Cantonese) text.
Step 5: Polish your Chinese (Cantonese) transcript
Edit your Chinese (Cantonese) transcript by typing directly into your browser to correct any words that were not transcribed perfectly.
Step 6: Export Chinese (Cantonese) text
Export the Chinese (Cantonese) text to any format you want including MS Word, PDF, subtitles, or a simple text file.
All done! You have now successfully converted your Chinese (Cantonese) M4V file to text!
How to improve the accuracy of your Chinese (Cantonese) transcripts?
Start by improving the quality of the Chinese (Cantonese) 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 Chinese (Cantonese) M4V file that I upload?
Yes, please do not over-compress or over-filter the audio track of your Chinese (Cantonese) 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 Chinese (Cantonese) with Sonix:
What customers say about Sonix's automated transcription 
I am very impressed with your program. The recording was not crystal clear and yet I received a perfect transcription...Wow! I would recommend this to anyone.
Sonix is so easy to use, and the quality is impressive in almost all languages we have tested so far. Punctuation is especially amazing compared to other platforms, even the tech giants (Google, Microsoft…).
Sonix saves me 60% of the time editing. No more manual trascription nightmare with writing down timecodes, and sending emails. I think you are changing the game here! Bravo :)
Sonix is the best transcription program I've ever used. It was almost error-free. I wish I could have used it longer!
Researched and did trials of at least 12 other services. Chose Sonix because of accuracy and simplicity.
Great product. Been waiting for this.
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Convert Chinese (Cantonese) M4V files to text with Sonix 
Sonix automatically transcribes and translates your audio/video files in 53+ languages. Easily search, edit, and share your media files. Sonix uses advanced transcription and translation algorithms to convert your Chinese (Cantonese) 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