F5-TTS is an open-source voice cloning tool from Shanghai Jiao Tong University with excellent results. The initial version only supported Chinese and English cloning, but the latest version v1 has been expanded to support multiple languages such as French, Italian, Hindi, Japanese, Russian, Spanish, and Finnish.

This article mainly introduces how to install and start F5-TTS using the official source code and how to connect it with the pyVideotrans project. In addition, it will also introduce how to modify the source code to achieve calls within the local area network.

At the same time, due to limited energy, I will no longer maintain the previous personal integration package and API interface, but will uniformly use the official interface to connect with the pyVideotrans project. The limitation of the official interface is that it can only be called locally and cannot be called within the local area network. Please refer to the local area network usage section of this article for solutions.

Prerequisites

Your system must have Python version 3.10 installed. Although versions 3.11/3.12 may theoretically work, they have not been actually tested, so it is recommended to use version 3.10.

If Python is not yet installed:

• Windows system installation tutorial: https://pvt512.com/20250313/pythoninstall

• Mac system installation: If not installed, please visit the Python official website to download the pkg installation package https://www.python.org/downloads/macos and select version 3.10.11.

  

Check if Python is installed:

• Windows system: Press Win+R, enter cmd in the pop-up window and press Enter. Enter python --version in the opened black window. If 3.10.xx is displayed, it means it is installed; if it prompts "python is not an internal or external command", it means it is not installed or Python is not added to the Path environment variable, and it needs to be reinstalled.
• Mac system: Directly execute python3 --version in the terminal. If 3.10.x is output, it means it is installed; otherwise, it needs to be installed.

Download F5-TTS Source Code

First, create an empty folder in a suitable location. It is recommended to choose a non-system disk and a location that does not require special permissions, such as the D drive. Avoid placing it in directories such as C:/Program Files (it is recommended that the location and all levels of folders use names composed of pure numbers or letters) to avoid potential problems. For example, D:/f5/v1 is a good location, while D:/开源 f5/f5 v1 with spaces and Chinese characters is not recommended.

This article takes installing F5-TTS in the D:/python/f5ttsnew folder of the Windows10 system as an example.

Open the website: https://github.com/SWivid/F5-TTS

As shown in the figure below, click to download the source code:

After the download is complete, unzip the compressed package and copy all the files in the F5-TTS-main folder to the D:/python/f5ttsnew folder, as shown in the figure below:

Create a Virtual Environment

It is strongly recommended to create a virtual environment unless your computer has no other Python projects or AI projects. Virtual environments can effectively avoid many potential errors.

Enter cmd in the address bar of the newly created folder D:/python/f5ttsnew and press Enter (Mac users, please use the terminal to enter the folder).

Execute the following command to create a virtual environment: python -m venv venv. After execution, a folder named venv will be added to the folder.

Next, activate the virtual environment (note the spaces and dot symbols):

• Windows system: .\venv\scripts\activate
• Mac system: . ./venv/bin/activate

After the virtual environment is activated, the command line prompt will add the word (venv). Please be sure to ensure that all subsequent operations are performed in this virtual environment, and check whether the command line prompt has (venv) before each operation.

Install Dependencies

In the terminal with the virtual environment activated, continue to enter the following command (note the spaces and dot symbols):

pip install -e .

Wait for the installation to complete. If CUDA acceleration is required, continue to execute the following command (this is one line of command, do not wrap):

# Install pytorch with your CUDA version, e.g.
pip install torch==2.4.0+cu124 torchaudio==2.4.0+cu124 --extra-index-url https://download.pytorch.org/whl/cu124

Configure Scientific Internet Access Environment

Important reminder: F5-TTS needs to download models online from the huggingface.co website. Since this website is blocked in China and cannot be directly connected, you must configure a scientific Internet access environment and enable global or system proxy before starting.

If the VPN tool you are using provides an HTTP port (as shown in the figure below):

Please enter the following command in the terminal to set the proxy:

• Windows system: set https_proxy=http://127.0.0.1:10808 (Please replace the port number with the port you are actually using)
• Mac system: https_proxy=http://127.0.0.1:10808 (Please replace the port number with the port you are actually using)

You can also directly modify the code to set the proxy and avoid manually entering it in the terminal each time. Open the F5-TTS root directory/src/f5_tts/infer/infer_gradio.py file and add the following code at the top of the file:

import os
os.environ['https_proxy']='http://127.0.0.1:10808' # Fill in according to your actual proxy address

Start the WebUI Interface

After configuring the scientific Internet access environment, enter the following command in the terminal to start the WebUI:

f5-tts_infer-gradio

The first time it is started, the program will automatically download the model, which may be slow. Please wait patiently. When starting later, the program may still connect to huggingface.co for detection. It is recommended to keep the proxy enabled to avoid errors.

After the startup is successful, the terminal will display the IP address and port number, as shown in the figure below:

Open the displayed address in the browser, which is http://127.0.0.1:7860 by default.

Connect pyVideoTrans API

In order to use F5-TTS in the video translation software, you need to start F5-TTS first and keep the terminal window open.

Then, open the video translation software, and select "TTS Settings" -> "F5-TTS API" in the menu in sequence, and fill in the startup address of F5-TTS, which is http://127.0.0.1:7860 by default. If your startup address is not the default address, please fill it in according to the actual address.

In the "Reference Audio" column, fill in the following:

Audio file name to be used#The corresponding text in the audio file

Note: Please place the reference audio file in the f5-tts folder under the pyVideotrans project root directory. If the folder does not exist, please create it manually. For example, you can name the reference audio file nverguo.wav.

The following is an example of filling in:

Re-identification?: By default, the reference audio (the subtitles identified during cloning) will be sent to F5-TTS together to avoid F5-TTS starting Whisper for speech recognition, saving time and improving efficiency, but sometimes you may want F5-TTS to re-identify, which can improve the cloning quality to a certain extent. You can select this check box at this time, but please note that if it is the first time you do so after selecting it, F5-TTS will download the openai-whisper-v3 model online from huggingface.co, please ensure that you have scientific Internet access.

Solve LAN Problems

If your F5-TTS is deployed on another computer in the LAN, you need to modify the F5-TTS code to support LAN access.

Open the F5-TTS project directory/src/f5_tts/infer/infer_gradio.py file and add the following code below line 16:

# Add LAN start
import os
from pathlib import Path

ROOT=Path(os.getcwd()).as_posix()
TMP=f'{ROOT}/tmp'
Path(TMP).mkdir(exist_ok=True)
os.environ['GRADIO_TEMP_DIR']=TMP
gr.set_static_paths(paths=[TMP,tempfile.gettempdir()])
print(TMP)

## Add LAN end

Schematic diagram of the code addition position:

After saving the modification, restart F5-TTS. Then fill in the IP address and port number after F5-TTS is started in pyVideotrans, such as http://192.168.0.12:7860.

Add Other Languages

If you need to use models in other languages, you also need to modify the F5-TTS project directory/src/f5_tts/infer/infer_gradio.py file.

Find the code around line 59:

DEFAULT_TTS_MODEL_CFG = [
    "hf://SWivid/F5-TTS/F5TTS_v1_Base/model_1250000.safetensors",
    "hf://SWivid/F5-TTS/F5TTS_v1_Base/vocab.txt",
    json.dumps(dict(dim=1024, depth=22, heads=16, ff_mult=2, text_dim=512, conv_layers=4)),
]

Schematic diagram of code position:

By default, this is where the official Chinese and English models are configured. If you need to use models in other languages, please modify them according to the following instructions. After the modification, you need to restart F5-TTS and ensure that the scientific Internet access environment has been configured so that the program can download new language models online. After the download is successful, first clone a timbre through WebUI for testing, and then use it through pyVideoTrans.

Important reminder: Before using it, please ensure that the dubbing text language in pyVideoTrans is consistent with the model language selected in F5-TTS.

The following is the configuration information of each language model:

1. French:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://RASPIAUDIO/F5-French-MixedSpeakers-reduced/model_last_reduced.pt",
       "hf://RASPIAUDIO/F5-French-MixedSpeakers-reduced/vocab.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1}),
   ]

2. Hindi:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://SPRINGLab/F5-Hindi-24KHz/model_2500000.safetensors",
       "hf://SPRINGLab/F5-Hindi-24KHz/vocab.txt",
       json.dumps({"dim": 768, "depth": 18, "heads": 12, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1})
   ]

3. Italian:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://alien79/F5-TTS-italian/model_159600.safetensors",
       "hf://alien79/F5-TTS-italian/vocab.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1})
   ]

4. Japanese:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://Jmica/F5TTS/JA_25498980/model_25498980.pt",
       "hf://Jmica/F5TTS/JA_25498980/vocab_updated.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1})
   ]

5. Russian:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://hotstone228/F5-TTS-Russian/model_last.safetensors",
       "hf://hotstone228/F5-TTS-Russian/vocab.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1})
   ]

6. Spanish:

   DEFAULT_TTS_MODEL_CFG = [
       "hf://jpgallegoar/F5-Spanish/model_last.safetensors",
       "hf://jpgallegoar/F5-Spanish/vocab.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "conv_layers": 4})
   ]

7. Finnish:

      DEFAULT_TTS_MODEL_CFG = [
       "hf://AsmoKoskinen/F5-TTS_Finnish_Model/model_common_voice_fi_vox_populi_fi_20241206.safetensors",
       "hf://AsmoKoskinen/F5-TTS_Finnish_Model/vocab.txt",
       json.dumps({"dim": 1024, "depth": 22, "heads": 16, "ff_mult": 2, "text_dim": 512, "text_mask_padding": False, "conv_layers": 4, "pe_attn_head": 1})]

Pay attention to official updates, other languages can be added in a similar way, address: https://github.com/SWivid/F5-TTS/blob/main/src/f5_tts/infer/SHARED.md

Common Errors and Precautions

1. During API use, you can close the WebUI interface in the browser, but you cannot close the terminal window that started F5-TTS.

   

2. Can the model in F5-TTS be switched dynamically? No. You need to manually modify the code as described above and then restart the WebUI.

3. This type of error occurs frequently

    raise ConnectTimeout(e, request=request)
requests.exceptions.ConnectTimeout: (MaxRetryError("HTTPSConnectionPool(host='huggingface.co', port=443): Max retries exceeded with url: /SWivid/F5-TTS/resolve/main/F5TTS_v1_Base/vocab.txt (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x000002174796DF60>, 'Connection to huggingface.co timed out. (connect timeout=10)'))"), '(Request ID: 0458b571-90ab-4edd-ae59-b93bd603cdd0)')

Proxy problem, please use a scientific Internet access tool and use a smooth proxy, refer to the above configuration of the scientific Internet access environment

4. How to prohibit connecting to huggingface.co every time?

Please make sure that you have successfully cloned at least once and the model has been downloaded Open F5-TTS root directory/src/f5_tts/infer/utils_infer.py

Search for snapshot_download and find the line of code shown in the figure

Modify it to

local_path = snapshot_download(repo_id="nvidia/bigvgan_v2_24khz_100band_256x", cache_dir=hf_cache_dir,local_files_only=True)

Then search for hf_hub_download and find the 2 lines of code shown in the figure

Modify it to

config_path = hf_hub_download(repo_id=repo_id, cache_dir=hf_cache_dir, filename="config.yaml",local_files_only=True)
            model_path = hf_hub_download(repo_id=repo_id, cache_dir=hf_cache_dir, filename="pytorch_model.bin",local_files_only=True)

In fact, it is just adding the new parameter ,local_files_only=True to the place where these 3 lines of code are called Please make sure that the model has been downloaded locally, otherwise it will report an error that the model cannot be found

5. F5-TTS is normal after deployment, but pyVideotrans returns {detail:"Not found"} during testing
   • Check if other AI projects are occupying the port. Generally, AI projects with interfaces use the gradio interface, which also defaults to 7860. Close other projects and restart F5-TTS
   • If pyVideotrans is deployed from source code, please execute pip install --upgrade gradio_client and then try again
   • Restart F5-TTS and use the command f5-tts_infer-gradio --api to start