使用微软语音把文本转语音-前提条件，激活免费的微软AI语音
微软语音 晓晓 文本转语音 源码 speech_synthesis.py
import os
import azure.cognitiveservices.speech as speechsdk
class SPEECH:
def __init__(self):
# 需要转语音的文本文字
# 设置音频保存本地地址
self.output_file = "r:\\output.wav"
# 从环境变量中获取订阅密钥和区域信息
self.speech_config = speechsdk.SpeechConfig(subscription=os.environ.get('SPEECH_KEY'),
region=os.environ.get('SPEECH_REGION'))
# 设置语音合成使用的语言—— 云枫
self.speech_config.speech_synthesis_language = "zh-CN"
# self.speech_config.speech_synthesis_voice_name = 'zh-CN-YunfengNeural' # 云枫
self.speech_config.speech_synthesis_voice_name = 'zh-CN-XiaoxiaoNeural' # 晓晓
def speak_txt(self):
# 配置音频输出为默认扬声器
audio_config = speechsdk.audio.AudioOutputConfig(use_default_speaker=True)
return audio_config
def down_audio(self):
# 配置音频输出为默认扬声器
audio_config = speechsdk.audio.AudioOutputConfig(filename=self.output_file)
return audio_config
def run(self, text, audio_config):
# 创建语音合成器
speech_synthesizer = speechsdk.SpeechSynthesizer(speech_config=self.speech_config, audio_config=audio_config)
# 调用语音合成API将文本转换为语音
speech_synthesis_result = speech_synthesizer.speak_text_async(text).get()
# 检查语音合成的结果并进行相应的处理
if speech_synthesis_result.reason == speechsdk.ResultReason.SynthesizingAudioCompleted:
print("Speech synthesized for text [{}]".format(text))
elif speech_synthesis_result.reason == speechsdk.ResultReason.Canceled:
cancellation_details = speech_synthesis_result.cancellation_details
print("Speech synthesis canceled: {}".format(cancellation_details.reason))
if cancellation_details.reason == speechsdk.CancellationReason.Error:
if cancellation_details.error_details:
print("Error details: {}".format(cancellation_details.error_details))
print("Did you set the speech resource key and region values?")
if __name__ == "__main__":
my_speech = SPEECH()
while True:
# 从控制台获取要转换为语音的文本
print("Enter some text that you want to speak >")
text = input()
print("改成读取 input.txt 文件编码 utf-8")
with open('input.txt', encoding="utf-8") as f:
text = f.read()
f.closed
# 保存到本地
my_speech.run(text, my_speech.down_audio())
# 输出语音播放
# my_speech.run(text, my_speech.speak_txt())
打开控制台，使用 Python 执行脚本把文本转换语音
# 设置音频保存本地地址, 源码中修改
self.output_file = "r:\\output.wav"
# 输入的文本文件，保存自己写的视频文案
with open('input.txt', encoding="utf-8") as f:
# 执行这个命令，程序工作运行
python.exe .\speech_synthesis.py
使用FFMPEG把语音合并到视频中
- 要将新语音音频合并到视频中，同时保留原视频的背景音乐，并将新声音的音量调整为1.5倍，可以使用以下
ffmpeg 命令：
ffmpeg -filter_complex "[1:a]volume=1.2[a1];[0:a][a1]amix=inputs=2:duration=longest" \
-i 1.mp4 -i new.wav -c:v copy new.mp4
命令解析：
[1:a]volume=1.2[a1]：将新音频的音量调整为1.2倍，并将结果命名为 [a1]。[0:a][a1]amix=inputs=2:duration=longest：将原音频和调整过的音频混合在一起。-c:v copy：复制视频流，不进行转码。new.mp4：指定输出的视频文件名。
也可以把背景音乐混合到视频中，volume=0.3 比较合适
ffmpeg -filter_complex "[1:a]volume=0.3[a1];[0:a][a1]amix=inputs=2:duration=longest" \
-i 1.mp4 -i bg.mp3 -c:v copy new.mp4
自己写 MP4CUT 工具，调用ffmpeg 剪辑视频
$ mp4cut.exe
Usage: mp4cut.exe sample.mp4 00:08 01:18
$ mp4cut new.MP4 0:08 0:18
ffmpeg version 5.0.1-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 11.2.0 (Rev7, Built by MSYS2 project)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'new.MP4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf59.16.100
Duration: 00:02:45.00, start: 0.000000, bitrate: 6123 kb/s
Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 300 fps=0.0 q=-1.0 Lsize= 7552kB time=00:00:10.00 bitrate=6181.3kbits/s speed=1.07e+03x
video:7385kB audio:156kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.131130%
FFMPEG 按时间截取视频命令如下，我们使用 C/C++ 语言编写代码来调用 ffmpeg
ffmpeg -i ./plutopr.mp4 \
-vcodec copy -acodec copy -ss 00:18:45 -to 00:19:36 \
./cutout1.mp4 -y
MP4CUT工具源码: mp4cut.cpp
#include <string>
#include <cstring>
#include <cstdio>
#include <cctype>
void replace_colon(char* str)
{
while (*str) {
if (*str == ':')
*str = '-';
str++;
}
}
int main(int argc, char* argv[])
{
if (4 != argc) {
puts("Usage: mp4cut.exe sample.mp4 00:08 01:18 ");
return -1;
}
/*******
FFMPEG 按时间截取视频
ffmpeg -i ./plutopr.mp4 \
-vcodec copy -acodec copy -ss 00:18:45 -to 00:19:36 \
./cutout1.mp4 -y
*******/
char cmdline[4096];
sprintf(cmdline, "ffmpeg -i \"%s\" -vcodec copy -acodec copy -ss %s -to %s -y \"%s\" ",
argv[1], argv[2], argv[3], argv[1]);
char newfile[512]; // 时间戳文件名后缀
sprintf(newfile, ".Cut_%s_%s.mp4\" ", argv[2], argv[3]);
replace_colon(newfile);
char* pch = strrchr(cmdline, '.');
FILE* pFile;
pFile = fopen(argv[1], "r");
if (pch != NULL) {
strcpy(pch, newfile);
if (pFile != NULL) {
// puts(cmdline);
system(cmdline);
}
}
}
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