Python gtts vlc plays too quickly to hear the first couple words

问题

In python, using the module gTTS and VLC-python, I've created a Text to speech program, which is quite simple to do.

But the thing which is bugging me is when I get to playing the mp3 file created by gTTS it skips the first word or two.

So if I have the string "The weather today will be cloudy". It'll speak out "today will be cloudy"

Even if I adjust the string, it seems to miss out the first word or two, sometimes it starts mid word.

When I play the audio file outside of the code, it plays normally, sometimes it stutters on the first word but if I rewind and have it wait a second, it plays perfectly.

Is there a way to load the audio clip or buffer it before playing so it starts smoothly?

回答1:

In your code you are going to have something along the lines of:

self.Media = self.Instance.media_new_path('my.mp3')
self.player.set_media(self.Media)
self.player.set_xwindow(self.panel1.GetHandle())

which defines what is going to be played.

Then you will have something like:

if self.player.play() == -1:
    print("Error playing file")
else:
    pass

where you tell vlc to start playing the file.

put a time.sleep(3) before that play command or actuate the play function from a separate button or something.
This is the equivalent of the:
vlc --no-playlist-autostart vp.mp3
or
vlc --start-paused vp.mp3 command line options.
i.e. load the file but don't start playing it, until I tell you.

回答2:

I found another library called playsound which plays the audio files back without any clipping:

from gtts import gTTS
from playsound import playsound

text = "Say something."
speech = gTTS(text = text, lang = 'en', slow = False)
mp3_file = 'text.mp3'
speech.save(mp3_file)
playsound(mp3_file)

I think this is a better solution than VLC, even if there was no clipping of audio in VLC, because using the vlc library requires you to have VLC Media Player installed on your computer, whereas this playsound library doesn't require you to install anything else for it to work.

来源：https://stackoverflow.com/questions/35485972/python-gtts-vlc-plays-too-quickly-to-hear-the-first-couple-words