bufix for issue如果url链接无效好像就会导致报错 #6

readme.md

@@ -91,7 +91,7 @@ https://pypi.org/project/yanhekt/
 
    <img src="assets/image-20240403163924034.png" width="250px"/>
 
-   - 扔进链接或者courseID（可Ctrl-C V)
+   - 扔进链接或者courseID（可Ctrl-C V）
    - 获取课程信息
    - 随意选择课时（Ctrl、Shift、鼠标拖拽都可多选）
    - 设置一些参数，比如要下载什么视频

yanhekt.py

@@ -5,7 +5,7 @@
 Author       : GDDG08
 Date         : 2022-11-08 02:07:44
 LastEditors  : GDDG08
-LastEditTime : 2024-04-03 16:03:17
+LastEditTime : 2024-04-03 23:12:54
 '''
 import requests
 from m3u8dl import M3u8Download
@@ -96,7 +96,7 @@ def download(self, callback=None, callback_prog=None):
             videos = video['videos'][0]
             # 下载投影录屏
             if self.vga or self.dual:
-                if 'vga' in videos:  # 检查是否存在vga链接
+                if 'vga' in videos and videos['vga']:  # 检查是否存在vga链接
                     if self.skip and os.path.exists(f"{dirName}/{fileName}-VGA.mp4"):
                         print(f"VGA seems already done. Skipping...")
                     else:
@@ -107,7 +107,7 @@ def download(self, callback=None, callback_prog=None):
 
             # 下载视频
             if self.video or self.dual:
-                if 'main' in videos:  # 检查是否存在main链接
+                if 'main' in videos and videos['main']:  # 检查是否存在main链接
                     if self.skip and os.path.exists(f"{dirName}/{fileName}-Video.mp4"):
                         print(f"Video seems already done. Skipping...")
                     else: