# pilk
python silk codec binding 支持微信语音编解码
pilk: python + silk
关联项目: [weixin-wxposed-silk-voice](https://github.com/foyoux/weixin-wxposed-silk-voice)
## 安装
[![python version](https://img.shields.io/pypi/pyversions/pilk)](https://pypi.org/project/pilk/) [![downloads](https://static.pepy.tech/personalized-badge/pilk?period=total&units=international_system&left_color=black&right_color=orange&left_text=Downloads)](https://pepy.tech/project/pilk)
```bash
pip install pilk
```
## 介绍与说明
[**SILK**](https://en.wikipedia.org/wiki/SILK) 是一种语音编码格式,由 [**Skype**](https://en.wikipedia.org/wiki/Skype_Technologies)
公司研发,网上可找到的最新版本是 2012 发布的。
**SILK** 原始代码已上传到 [Release](https://github.com/foyoux/pilk/releases/tag/v0.0.1) , 包含规范文档
**Tencent** 系语音支持来自 [silk-v3-decoder](https://github.com/kn007/silk-v3-decoder)
[Release ](https://github.com/foyoux/pilk/releases/tag/v0.0.1)
中也包含 [silk-v3-decoder](https://github.com/kn007/silk-v3-decoder) 重编译的 **x64-win**
版本,支持中文,[源代码](https://github.com/foyoux/silk-codec)
### **SILK** 编码格式 和 **Tencent** 系语音的关系:
> 此处 **Tencent** 系语音,仅以微信语音为例
1. 标准 **SILK** 文件以 `b'#!SILK_V3'` 开始,以 `b'\xFF\xFF'` 结束,中间为语音数据
2. 微信语音文件在标准 **SILK** 文件的开头插入了 `b'\x02'`,去除了结尾的 `b'\xFF\xFF'`,中间不变
> 已下统称为语音文件
### 语音数据
语音数据分为很多个独立 **frame**,每个 **frame** 开头两字节存储剩余 **frame** 数据的大小,每个 **frame** 默认存储 **20ms** 的音频数据
据此可写出获取 **语音文件** 持续时间(duration) 的函数(此函数 **pilk** 中已包含)
```python
def get_duration(silk_path: str, frame_ms: int = 20) -> int:
"""获取 silk 文件持续时间,单位:ms"""
with open(silk_path, 'rb') as silk:
tencent = False
if silk.read(1) == b'\x02':
tencent = True
silk.seek(0)
if tencent:
silk.seek(10)
else:
silk.seek(9)
i = 0
while True:
size = silk.read(2)
if len(size) != 2:
break
size = size[0] + size[1] << 8
if not tencent and size == 0xffff:
break
i += 1
silk.seek(silk.tell() + size)
return i * frame_ms
```
根据 **SILK** 格式规范,**frame_ms** 可为 `20, 40, 60, 80, 100`
## 快速入门
> 详情请在 IDE 中查看 API 文档注释
在使用 **pilk** 之前,你还需清楚 **音频文件 `mp3, aac, m4a, flac, wav, ...`** 与 **语音文件** 之间的转换是借助 [**PCM raw
data**](https://en.wikipedia.org/wiki/Pulse-code_modulation) 完成的
具体转换关系:音频文件 ⇔ PCM ⇔ 语音文件
1. 音(视)频文件 ➜ PCM
> 借助 ffmpeg,你当然需要先有 [ffmpeg](https://www.ffmpeg.org/download.html)
```bat
ffmpeg -y -i <音(视)频输入文件> -vn -ar <采样率> -ac 1 -f s16le <PCM输出文件>
```
1. `-y`: 可加可不加,表示 <PCM输出文件> 已存在时不询问,直接覆盖
2. `-i`: 没啥好说的,固定的,后接 <音(视)频输入文件>
3. `-vn`: 表示不处理视频数据,建议添加,虽然不加也不会处理视频数据(视频数据不存在转PCM的说法),但可能会打印警告
4. `-ar`: 设置采样率,可选的值是 [8000, 12000, 16000, 24000, 32000, 44100, 48000], 这里你可以直接理解为声音质量
5. `-ac`: 设置声道数,在这里必须为 **1**,这是由 **SILK** 决定的
6. `-f`: 表示强制转换为指定的格式,一般来说必须为 **s16le**, 表示 `16-bit short integer Little-Endian data`
7. example1: `ffmpeg -y -i mv.mp4 -vn -ar 44100 -ac 1 -f s16le mv.pcm`
8. example2: `ffmpeg -y -i music.mp3 -ar 44100 -ac 1 -f s16le music.pcm`
2. PCM ➜ 音频文件
```bat
ffmpeg -y -f s16le -i <PCM输入文件> -ar <采样率> -ac <声道数> <音频输出文件>
```
1. `-f`: 这里必须为 `s16le`, 同样也是由 **SILK** 决定的
2. `-ar`: 同上
3. `-ac`: 含义同上,值随意
4. `<音频输出文件>`: 扩展名要准确,没有指定格式时,**ffmpeg** 会根据给定的输出文件扩展名来判断需要输出的格式
5. example3: `ffmpeg -y -f s16le -i test.pcm test.mp3`
> ffmpeg 也可以使用 python ffmpeg binding 替换,推荐 [PyAV](https://github.com/PyAV-Org/PyAV) 大家自行研究,这里不再啰嗦。
讲完了 音频文件 ⇔ PCM,接下来就是用 **pilk** 进行 PCM ⇔ 语音文件 互转
### silk 编码
```python
import pilk
# pcm_rate 参数必须和 使用 ffmpeg 转 音频 到 PCM 文件时,使用的 `-ar` 参数一致
# pcm_rate 参数必须和 使用 ffmpeg 转 音频 到 PCM 文件时,使用的 `-ar` 参数一致
# pcm_rate 参数必须和 使用 ffmpeg 转 音频 到 PCM 文件时,使用的 `-ar` 参数一致
duration = pilk.encode("test.pcm", "test.silk", pcm_rate=44100, tencent=True)
print("语音时间为:", duration)
```
### silk 解码
```python
import pilk
# pcm_rate 参数必须和 使用 ffmpeg 转 音频 到 PCM 文件时,使用的 `-ar` 参数一致
duration = pilk.decode("test.silk", "test.pcm")
print("语音时间为:", duration)
```
## 使用 Python 转任意媒体文件到 SILK
使用 [pudub](https://github.com/jiaaro/pydub) 依赖 [ffmpeg](https://www.ffmpeg.org/)
```python
import os, pilk
from pydub import AudioSegment
def convert_to_silk(media_path: str) -> str:
"""将输入的媒体文件转出为 silk, 并返回silk路径"""
media = AudioSegment.from_file(media_path)
pcm_path = os.path.basename(media_path)
pcm_path = os.path.splitext(pcm_path)[0]
silk_path = pcm_path + '.silk'
pcm_path += '.pcm'
media.export(pcm_path, 's16le', parameters=['-ar', str(media.frame_rate), '-ac', '1']).close()
pilk.encode(pcm_path, silk_path, pcm_rate=media.frame_rate, tencent=True)
return silk_path
```
使用 [pyav](https://github.com/PyAV-Org/PyAV) **推荐**
```python
import os
import av
import pilk
def to_pcm(in_path: str) -> tuple[str, int]:
"""任意媒体文件转 pcm"""
out_path = os.path.splitext(in_path)[0] + '.pcm'
with av.open(in_path) as in_container:
in_stream = in_container.streams.audio[0]
sample_rate = in_stream.codec_context.sample_rate
with av.open(out_path, 'w', 's16le') as out_container:
out_stream = out_container.add_stream(
'pcm_s16le',
rate=sample_rate,
layout='mono'
)
try:
for frame in in_container.decode(in_stream):
frame.pts = None
for packet in out_stream.encode(frame):
out_container.mux(packet)
except:
pass
return out_path, sample_rate
def convert_to_silk(media_path: str) -> str:
"""任意媒体文件转 silk, 返回silk路径"""
pcm_path, sample_rate = to_pcm(media_path)
silk_path = os.path.splitext(pcm_path)[0] + '.silk'
pilk.encode(pcm_path, silk_path, pcm_rate=sample_rate, tencent=True)
os.remove(pcm_path)
return silk_path
```
Raw data
{
"_id": null,
"home_page": "https://github.com/foyoux/pilk",
"name": "pilk",
"maintainer": "foyou",
"docs_url": null,
"requires_python": ">=3.6",
"maintainer_email": "yimi.0822@qq.com",
"keywords": "silk,voice,python,extension,wechat,qq,tencent,xposed,c/c++",
"author": "foyou",
"author_email": "yimi.0822@qq.com",
"download_url": "https://files.pythonhosted.org/packages/66/bb/938dd697b6bc2d851ffec4ffe82ed20078e58bd0ef049e84f4d038d6f991/pilk-0.2.4.tar.gz",
"platform": null,
"description": "# pilk\r\n\r\npython silk codec binding \u652f\u6301\u5fae\u4fe1\u8bed\u97f3\u7f16\u89e3\u7801\r\n\r\npilk: python + silk\r\n\r\n\u5173\u8054\u9879\u76ee: [weixin-wxposed-silk-voice](https://github.com/foyoux/weixin-wxposed-silk-voice)\r\n\r\n## \u5b89\u88c5\r\n\r\n[![python version](https://img.shields.io/pypi/pyversions/pilk)](https://pypi.org/project/pilk/) [![downloads](https://static.pepy.tech/personalized-badge/pilk?period=total&units=international_system&left_color=black&right_color=orange&left_text=Downloads)](https://pepy.tech/project/pilk)\r\n\r\n```bash\r\npip install pilk\r\n```\r\n\r\n## \u4ecb\u7ecd\u4e0e\u8bf4\u660e\r\n\r\n[**SILK**](https://en.wikipedia.org/wiki/SILK) \u662f\u4e00\u79cd\u8bed\u97f3\u7f16\u7801\u683c\u5f0f\uff0c\u7531 [**Skype**](https://en.wikipedia.org/wiki/Skype_Technologies)\r\n\u516c\u53f8\u7814\u53d1\uff0c\u7f51\u4e0a\u53ef\u627e\u5230\u7684\u6700\u65b0\u7248\u672c\u662f 2012 \u53d1\u5e03\u7684\u3002\r\n\r\n**SILK** \u539f\u59cb\u4ee3\u7801\u5df2\u4e0a\u4f20\u5230 [Release](https://github.com/foyoux/pilk/releases/tag/v0.0.1) , \u5305\u542b\u89c4\u8303\u6587\u6863\r\n\r\n**Tencent** \u7cfb\u8bed\u97f3\u652f\u6301\u6765\u81ea [silk-v3-decoder](https://github.com/kn007/silk-v3-decoder)\r\n\r\n[Release ](https://github.com/foyoux/pilk/releases/tag/v0.0.1)\r\n\u4e2d\u4e5f\u5305\u542b [silk-v3-decoder](https://github.com/kn007/silk-v3-decoder) \u91cd\u7f16\u8bd1\u7684 **x64-win**\r\n\u7248\u672c\uff0c\u652f\u6301\u4e2d\u6587\uff0c[\u6e90\u4ee3\u7801](https://github.com/foyoux/silk-codec)\r\n\r\n### **SILK** \u7f16\u7801\u683c\u5f0f \u548c **Tencent** \u7cfb\u8bed\u97f3\u7684\u5173\u7cfb\uff1a\r\n\r\n> \u6b64\u5904 **Tencent** \u7cfb\u8bed\u97f3\uff0c\u4ec5\u4ee5\u5fae\u4fe1\u8bed\u97f3\u4e3a\u4f8b\r\n\r\n1. \u6807\u51c6 **SILK** \u6587\u4ef6\u4ee5 `b'#!SILK_V3'` \u5f00\u59cb\uff0c\u4ee5 `b'\\xFF\\xFF'` \u7ed3\u675f\uff0c\u4e2d\u95f4\u4e3a\u8bed\u97f3\u6570\u636e\r\n2. \u5fae\u4fe1\u8bed\u97f3\u6587\u4ef6\u5728\u6807\u51c6 **SILK** \u6587\u4ef6\u7684\u5f00\u5934\u63d2\u5165\u4e86 `b'\\x02'`\uff0c\u53bb\u9664\u4e86\u7ed3\u5c3e\u7684 `b'\\xFF\\xFF'`\uff0c\u4e2d\u95f4\u4e0d\u53d8\r\n\r\n> \u5df2\u4e0b\u7edf\u79f0\u4e3a\u8bed\u97f3\u6587\u4ef6\r\n\r\n### \u8bed\u97f3\u6570\u636e\r\n\r\n\u8bed\u97f3\u6570\u636e\u5206\u4e3a\u5f88\u591a\u4e2a\u72ec\u7acb **frame**\uff0c\u6bcf\u4e2a **frame** \u5f00\u5934\u4e24\u5b57\u8282\u5b58\u50a8\u5269\u4f59 **frame** \u6570\u636e\u7684\u5927\u5c0f\uff0c\u6bcf\u4e2a **frame** \u9ed8\u8ba4\u5b58\u50a8 **20ms** \u7684\u97f3\u9891\u6570\u636e\r\n\r\n\u636e\u6b64\u53ef\u5199\u51fa\u83b7\u53d6 **\u8bed\u97f3\u6587\u4ef6** \u6301\u7eed\u65f6\u95f4(duration) \u7684\u51fd\u6570\uff08\u6b64\u51fd\u6570 **pilk** \u4e2d\u5df2\u5305\u542b\uff09\r\n\r\n```python\r\ndef get_duration(silk_path: str, frame_ms: int = 20) -> int:\r\n \"\"\"\u83b7\u53d6 silk \u6587\u4ef6\u6301\u7eed\u65f6\u95f4\uff0c\u5355\u4f4d\uff1ams\"\"\"\r\n with open(silk_path, 'rb') as silk:\r\n tencent = False\r\n if silk.read(1) == b'\\x02':\r\n tencent = True\r\n silk.seek(0)\r\n if tencent:\r\n silk.seek(10)\r\n else:\r\n silk.seek(9)\r\n i = 0\r\n while True:\r\n size = silk.read(2)\r\n if len(size) != 2:\r\n break\r\n size = size[0] + size[1] << 8\r\n if not tencent and size == 0xffff:\r\n break\r\n i += 1\r\n silk.seek(silk.tell() + size)\r\n return i * frame_ms\r\n```\r\n\r\n\u6839\u636e **SILK** \u683c\u5f0f\u89c4\u8303\uff0c**frame_ms** \u53ef\u4e3a `20, 40, 60, 80, 100`\r\n\r\n## \u5feb\u901f\u5165\u95e8\r\n\r\n> \u8be6\u60c5\u8bf7\u5728 IDE \u4e2d\u67e5\u770b API \u6587\u6863\u6ce8\u91ca\r\n\r\n\u5728\u4f7f\u7528 **pilk** \u4e4b\u524d\uff0c\u4f60\u8fd8\u9700\u6e05\u695a **\u97f3\u9891\u6587\u4ef6 `mp3, aac, m4a, flac, wav, ...`** \u4e0e **\u8bed\u97f3\u6587\u4ef6** \u4e4b\u95f4\u7684\u8f6c\u6362\u662f\u501f\u52a9 [**PCM raw\r\ndata**](https://en.wikipedia.org/wiki/Pulse-code_modulation) \u5b8c\u6210\u7684\r\n\r\n\u5177\u4f53\u8f6c\u6362\u5173\u7cfb\uff1a\u97f3\u9891\u6587\u4ef6 \u21d4 PCM \u21d4 \u8bed\u97f3\u6587\u4ef6\r\n\r\n1. \u97f3(\u89c6)\u9891\u6587\u4ef6 \u279c PCM\r\n > \u501f\u52a9 ffmpeg\uff0c\u4f60\u5f53\u7136\u9700\u8981\u5148\u6709 [ffmpeg](https://www.ffmpeg.org/download.html)\r\n ```bat\r\n ffmpeg -y -i <\u97f3(\u89c6)\u9891\u8f93\u5165\u6587\u4ef6> -vn -ar <\u91c7\u6837\u7387> -ac 1 -f s16le <PCM\u8f93\u51fa\u6587\u4ef6>\r\n ```\r\n 1. `-y`: \u53ef\u52a0\u53ef\u4e0d\u52a0\uff0c\u8868\u793a <PCM\u8f93\u51fa\u6587\u4ef6> \u5df2\u5b58\u5728\u65f6\u4e0d\u8be2\u95ee\uff0c\u76f4\u63a5\u8986\u76d6\r\n 2. `-i`: \u6ca1\u5565\u597d\u8bf4\u7684\uff0c\u56fa\u5b9a\u7684\uff0c\u540e\u63a5 <\u97f3(\u89c6)\u9891\u8f93\u5165\u6587\u4ef6>\r\n 3. `-vn`: \u8868\u793a\u4e0d\u5904\u7406\u89c6\u9891\u6570\u636e\uff0c\u5efa\u8bae\u6dfb\u52a0\uff0c\u867d\u7136\u4e0d\u52a0\u4e5f\u4e0d\u4f1a\u5904\u7406\u89c6\u9891\u6570\u636e\uff08\u89c6\u9891\u6570\u636e\u4e0d\u5b58\u5728\u8f6cPCM\u7684\u8bf4\u6cd5\uff09\uff0c\u4f46\u53ef\u80fd\u4f1a\u6253\u5370\u8b66\u544a\r\n 4. `-ar`: \u8bbe\u7f6e\u91c7\u6837\u7387\uff0c\u53ef\u9009\u7684\u503c\u662f [8000, 12000, 16000, 24000, 32000, 44100, 48000], \u8fd9\u91cc\u4f60\u53ef\u4ee5\u76f4\u63a5\u7406\u89e3\u4e3a\u58f0\u97f3\u8d28\u91cf\r\n 5. `-ac`: \u8bbe\u7f6e\u58f0\u9053\u6570\uff0c\u5728\u8fd9\u91cc\u5fc5\u987b\u4e3a **1**\uff0c\u8fd9\u662f\u7531 **SILK** \u51b3\u5b9a\u7684\r\n 6. `-f`: \u8868\u793a\u5f3a\u5236\u8f6c\u6362\u4e3a\u6307\u5b9a\u7684\u683c\u5f0f\uff0c\u4e00\u822c\u6765\u8bf4\u5fc5\u987b\u4e3a **s16le**, \u8868\u793a `16-bit short integer Little-Endian data`\r\n 7. example1: `ffmpeg -y -i mv.mp4 -vn -ar 44100 -ac 1 -f s16le mv.pcm`\r\n 8. example2: `ffmpeg -y -i music.mp3 -ar 44100 -ac 1 -f s16le music.pcm`\r\n\r\n\r\n2. PCM \u279c \u97f3\u9891\u6587\u4ef6\r\n ```bat\r\n ffmpeg -y -f s16le -i <PCM\u8f93\u5165\u6587\u4ef6> -ar <\u91c7\u6837\u7387> -ac <\u58f0\u9053\u6570> <\u97f3\u9891\u8f93\u51fa\u6587\u4ef6>\r\n ```\r\n 1. `-f`: \u8fd9\u91cc\u5fc5\u987b\u4e3a `s16le`, \u540c\u6837\u4e5f\u662f\u7531 **SILK** \u51b3\u5b9a\u7684\r\n 2. `-ar`: \u540c\u4e0a\r\n 3. `-ac`: \u542b\u4e49\u540c\u4e0a\uff0c\u503c\u968f\u610f\r\n 4. `<\u97f3\u9891\u8f93\u51fa\u6587\u4ef6>`: \u6269\u5c55\u540d\u8981\u51c6\u786e\uff0c\u6ca1\u6709\u6307\u5b9a\u683c\u5f0f\u65f6\uff0c**ffmpeg** \u4f1a\u6839\u636e\u7ed9\u5b9a\u7684\u8f93\u51fa\u6587\u4ef6\u6269\u5c55\u540d\u6765\u5224\u65ad\u9700\u8981\u8f93\u51fa\u7684\u683c\u5f0f\r\n 5. example3: `ffmpeg -y -f s16le -i test.pcm test.mp3`\r\n\r\n> ffmpeg \u4e5f\u53ef\u4ee5\u4f7f\u7528 python ffmpeg binding \u66ff\u6362\uff0c\u63a8\u8350 [PyAV](https://github.com/PyAV-Org/PyAV) \u5927\u5bb6\u81ea\u884c\u7814\u7a76\uff0c\u8fd9\u91cc\u4e0d\u518d\u5570\u55e6\u3002\r\n\r\n\u8bb2\u5b8c\u4e86 \u97f3\u9891\u6587\u4ef6 \u21d4 PCM\uff0c\u63a5\u4e0b\u6765\u5c31\u662f\u7528 **pilk** \u8fdb\u884c PCM \u21d4 \u8bed\u97f3\u6587\u4ef6 \u4e92\u8f6c\r\n\r\n### silk \u7f16\u7801\r\n\r\n```python\r\nimport pilk\r\n\r\n# pcm_rate \u53c2\u6570\u5fc5\u987b\u548c \u4f7f\u7528 ffmpeg \u8f6c \u97f3\u9891 \u5230 PCM \u6587\u4ef6\u65f6\uff0c\u4f7f\u7528\u7684 `-ar` \u53c2\u6570\u4e00\u81f4\r\n# pcm_rate \u53c2\u6570\u5fc5\u987b\u548c \u4f7f\u7528 ffmpeg \u8f6c \u97f3\u9891 \u5230 PCM \u6587\u4ef6\u65f6\uff0c\u4f7f\u7528\u7684 `-ar` \u53c2\u6570\u4e00\u81f4\r\n# pcm_rate \u53c2\u6570\u5fc5\u987b\u548c \u4f7f\u7528 ffmpeg \u8f6c \u97f3\u9891 \u5230 PCM \u6587\u4ef6\u65f6\uff0c\u4f7f\u7528\u7684 `-ar` \u53c2\u6570\u4e00\u81f4\r\nduration = pilk.encode(\"test.pcm\", \"test.silk\", pcm_rate=44100, tencent=True)\r\n\r\nprint(\"\u8bed\u97f3\u65f6\u95f4\u4e3a:\", duration)\r\n```\r\n\r\n### silk \u89e3\u7801\r\n\r\n```python\r\nimport pilk\r\n\r\n# pcm_rate \u53c2\u6570\u5fc5\u987b\u548c \u4f7f\u7528 ffmpeg \u8f6c \u97f3\u9891 \u5230 PCM \u6587\u4ef6\u65f6\uff0c\u4f7f\u7528\u7684 `-ar` \u53c2\u6570\u4e00\u81f4\r\nduration = pilk.decode(\"test.silk\", \"test.pcm\")\r\n\r\nprint(\"\u8bed\u97f3\u65f6\u95f4\u4e3a:\", duration)\r\n```\r\n\r\n## \u4f7f\u7528 Python \u8f6c\u4efb\u610f\u5a92\u4f53\u6587\u4ef6\u5230 SILK\r\n\r\n\u4f7f\u7528 [pudub](https://github.com/jiaaro/pydub) \u4f9d\u8d56 [ffmpeg](https://www.ffmpeg.org/)\r\n\r\n```python\r\nimport os, pilk\r\nfrom pydub import AudioSegment\r\n\r\n\r\ndef convert_to_silk(media_path: str) -> str:\r\n \"\"\"\u5c06\u8f93\u5165\u7684\u5a92\u4f53\u6587\u4ef6\u8f6c\u51fa\u4e3a silk, \u5e76\u8fd4\u56desilk\u8def\u5f84\"\"\"\r\n media = AudioSegment.from_file(media_path)\r\n pcm_path = os.path.basename(media_path)\r\n pcm_path = os.path.splitext(pcm_path)[0]\r\n silk_path = pcm_path + '.silk'\r\n pcm_path += '.pcm'\r\n media.export(pcm_path, 's16le', parameters=['-ar', str(media.frame_rate), '-ac', '1']).close()\r\n pilk.encode(pcm_path, silk_path, pcm_rate=media.frame_rate, tencent=True)\r\n return silk_path\r\n```\r\n\r\n\u4f7f\u7528 [pyav](https://github.com/PyAV-Org/PyAV) **\u63a8\u8350**\r\n\r\n```python\r\nimport os\r\n\r\nimport av\r\n\r\nimport pilk\r\n\r\n\r\ndef to_pcm(in_path: str) -> tuple[str, int]:\r\n \"\"\"\u4efb\u610f\u5a92\u4f53\u6587\u4ef6\u8f6c pcm\"\"\"\r\n out_path = os.path.splitext(in_path)[0] + '.pcm'\r\n with av.open(in_path) as in_container:\r\n in_stream = in_container.streams.audio[0]\r\n sample_rate = in_stream.codec_context.sample_rate\r\n with av.open(out_path, 'w', 's16le') as out_container:\r\n out_stream = out_container.add_stream(\r\n 'pcm_s16le',\r\n rate=sample_rate,\r\n layout='mono'\r\n )\r\n try:\r\n for frame in in_container.decode(in_stream):\r\n frame.pts = None\r\n for packet in out_stream.encode(frame):\r\n out_container.mux(packet)\r\n except:\r\n pass\r\n return out_path, sample_rate\r\n\r\n\r\ndef convert_to_silk(media_path: str) -> str:\r\n \"\"\"\u4efb\u610f\u5a92\u4f53\u6587\u4ef6\u8f6c silk, \u8fd4\u56desilk\u8def\u5f84\"\"\"\r\n pcm_path, sample_rate = to_pcm(media_path)\r\n silk_path = os.path.splitext(pcm_path)[0] + '.silk'\r\n pilk.encode(pcm_path, silk_path, pcm_rate=sample_rate, tencent=True)\r\n os.remove(pcm_path)\r\n return silk_path\r\n```\r\n",
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