Update Python version and ffmpeg download url in appveyor

Author: Amin

.appveyor.yml

@@ -14,15 +14,15 @@ environment:
     COMPOSER_NO_INTERACTION: 1
     ANSICON: 121x90 (121x90) # Console colors
 
-  ffmpeg_download: https://ffmpeg.zeranoe.com/builds/win64/static/ffmpeg-20200124-e931119-win64-static.zip
+  ffmpeg_download: https://www.gyan.dev/ffmpeg/builds/packages/ffmpeg-5.0-essentials_build.zip
 
   matrix:
-    - PYTHON: "C:\\Python38"
+    - PYTHON: "C:\\Python39"
       PYTHON_VERSION: 3.8
       PYTHON_ARCH: 32
 
-    - PYTHON: "C:\\Python37"
-      PYTHON_VERSION: 3.7
+    - PYTHON: "C:\\Python38"
+      PYTHON_VERSION: 3.8
       PYTHON_ARCH: 32
 
 init:
@@ -37,8 +37,8 @@ install:
   - pip install -r requirements.txt
   - ps: Start-FileDownload $env:ffmpeg_download
 
-  - 7z x ffmpeg-20200124-e931119-win64-static.zip
-  - PATH=%PATH%;%cd%\ffmpeg-20200124-e931119-win64-static\bin
+  - 7z x ffmpeg-5.0-essentials_build.zip
+  - PATH=%PATH%;%cd%\ffmpeg-5.0-essentials_build\bin
 
 test_script:
   - cd c:\projects\project-code

.github/workflows/pythonpackage.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v1

.travis.yml

@@ -12,8 +12,8 @@ before_install:
 
 matrix:
   include:
+    - python: 3.9
     - python: 3.8
-    - python: 3.7
 
 script:
   - export PATH=$(readlink -f ffmpeg-release):$PATH

README.md

@@ -30,7 +30,7 @@ This package uses the **[FFmpeg](https://ffmpeg.org)** to package media content
 - [License](#license)
 
 ## Requirements
-1. This version of the package is only compatible with **[Python 3.7](https://www.python.org/downloads/)** or higher.
+1. This version of the package is only compatible with **[Python 3.8](https://www.python.org/downloads/)** or higher.
 
 2. To use this package, you need to **[install the FFmpeg](https://ffmpeg.org/download.html)**. You will need both FFmpeg and FFProbe binaries to use it.