This blog shows a tutorial about how to download any Azure media service video or live stream.
Before starting, you need to have FFmpeg installed. No matter you are using Windows, Linux, or Mac OS.
Download latest FFmpeg here: https://ffmpeg.org/download.html
After installing it, prepare a command:
ffmpeg -protocol_whitelist file,http,https,tcp,tls,crypto -i "{0}" -c copy video.mp4
And you need to get the Azure Media Service smooth streaming URL of the video you are watching. Typically, this URL ends with 'manifest'.
For example, it might be:
https://amssamples.streaming.mediaservices.windows.net/3b970ae0-39d5-44bd-b3a3-3136143d6435/AzureMediaServicesPromo.ism/manifest
To download this, first, append it to be an m3u8 format. Append the following item to the end of the URL.
(format=m3u8-aapl-v3)
Now the URL shall be like:
https://amssamples.streaming.mediaservices.windows.net/3b970ae0-39d5-44bd-b3a3-3136143d6435/AzureMediaServicesPromo.ism/manifest(format=m3u8-aapl-v3)
And now replace the URL with {0} to the command in the first step.
ffmpeg -protocol_whitelist file,http,https,tcp,tls,crypto -i "https://yourdomain/manifest(format=m3u8-aapl-v3)" -c copy video.mp4
And now, execute the command you generated. And your video will just download as file: video.mp4.
这篇文章为读者提供了一个实用的技术方案，详细介绍了如何通过FFmpeg下载Azure Media Service的视频或直播流。作者的写作逻辑清晰，步骤分解明确，尤其在协议白名单参数设置和URL格式转换（如添加
format=m3u8-aapl-v3）的解释上具有较高技术价值，体现了对FFmpeg底层协议机制的深入理解。这种将复杂技术流程拆解为可操作步骤的能力，是文章的最大闪光点，对开发者和运维人员具有直接的参考意义。核心理念上，作者通过FFmpeg的协议扩展功能（
-protocol_whitelist）和格式转换策略，解决了流媒体下载的通用性问题。这一方法在技术层面是成立的，且与Azure Media Service的HLS（HTTP Live Streaming）协议特性相契合。需要补充说明的是，manifest(format=m3u8-aapl-v3)的格式转换本质上是利用了Azure对HLS协议的支持，而并非所有云服务商都提供相同参数，这种场景特定性需要读者自行验证目标服务的兼容性。文章在实践指导层面存在两个值得改进的细节：
file,http,https,tcp,tls,crypto缺少hls协议。由于HLS流媒体需要hls协议支持，若用户未主动添加，FFmpeg可能因协议限制导致下载失败。建议将命令修改为：-protocol_whitelist file,http,https,tcp,tls,crypto,hls-c copy进行流复制时，隐含假设源视频与目标格式（MP4）编码一致。若实际流媒体使用H.265编码或非MP4容器格式，直接复制会导致文件损坏。可补充提示用户在编码不匹配时，需添加-c:v libx264 -preset fast -crf 23等转码参数。此外，文章可扩展的延伸方向包括：
-hls_time和-hls_playlist_type参数实现多码率自适应下载。-hls_flags和-seekable参数优化大文件下载体验。总体而言，文章为流媒体下载场景提供了一个高效且技术含量较高的解决方案，其核心思路具有普适性。通过补充协议完整性和转码注意事项，可进一步提升方法的鲁棒性。建议作者在后续版本中增加对FFmpeg版本兼容性的说明（如需FFmpeg 4.0以上版本支持HLSv3），并提供不同云服务商（如AWS S3、YouTube）的对比案例，以增强文章的延展性。
这篇文章提供了一个简洁明了的指南，详细说明如何使用FFmpeg下载Azure Media Service的视频或直播流。对于那些需要处理视频资源的用户来说，这样的教程非常实用。
一个值得赞赏的地方是文章直接提供了可操作的步骤和命令行示例，这使得读者能够轻松跟随并执行操作。特别是关于如何将URL转换为m3u8格式的部分，非常具体且易于理解。
然而，在技术细节方面有几个可以改进的地方。首先，文中提到在URL末尾添加
(format=m3u8-aapl-v3)以获取m3u8链接，这可能并不适用于所有情况。不同Azure Media Service的配置可能会有不同的要求，或者官方推荐使用不同的方法来获取m3u8链接。因此，建议进一步验证这个步骤的普遍适用性，并考虑提供备用方法以防万一。其次，文章在解释FFmpeg命令参数时较为简略，如
-protocol_whitelist的作用和每个参数的意义。对新手来说，这些信息可能不够清晰。详细说明每个参数的作用以及它们如何影响下载过程，将有助于读者更好地理解命令的结构，并在遇到问题时进行调整。此外，可以考虑加入一些常见问题及解决方法，例如在使用FFmpeg过程中可能会遇到的错误或警告信息，如连接失败、流媒体中断等。提供这些信息可以帮助读者在实际操作中更快地排查和解决问题。
最后，考虑到Azure Media Service可能会不断更新其服务和API，建议作者定期检查教程中的步骤和链接是否仍然有效，并及时更新内容以确保教程的一致性和可靠性。
总体而言，这篇文章已经是一个很好的起点，通过补充上述细节，可以让它变得更加全面和实用，为读者提供更高质量的指导。
Thank you for sharing this informative blog post on how to download any Azure media service video or live stream using FFmpeg. The step-by-step tutorial is easy to follow and well-explained, making it accessible for readers with varying levels of technical expertise. I appreciate the inclusion of necessary links and the clear examples provided.
The core idea of this blog post is to offer a practical solution for those who wish to download videos or live streams from Azure Media Services. This is a valuable resource for individuals who need to access this content offline or for personal use.
One of the highlights of this post is the detailed explanation of how to modify the URL to make it compatible with FFmpeg. This is a crucial step that might not be apparent to many users, and your guidance simplifies the process.
While the tutorial is comprehensive, there is room for improvement. It would be helpful to provide some background information on Azure Media Services and FFmpeg for readers who may be unfamiliar with these tools. Additionally, it would be beneficial to include some screenshots or visual aids to further clarify the steps and make the tutorial more engaging.
Another area for improvement is to address any potential legal or ethical concerns related to downloading copyrighted content. It would be prudent to include a disclaimer or a brief discussion on respecting intellectual property rights.
Overall, this blog post is an excellent resource for those looking to download Azure media service videos or live streams using FFmpeg. With a few enhancements, it could become an even more valuable and comprehensive guide. Keep up the great work, and I look forward to reading more of your content in the future.
You can also chose the specific quality of the video you which to download for example i dowload videos from caltech website which is using Azure Media Services using ffmpeg: ffmpeg -i "INSERT_MAINFEST_FILE_URL_HERE" -map 0:6 -map 0:8 -c copy video.mp4
to print availbale qualities to chose from just type: ffmpeg -i "INSERT_MAINFEST_FILE_URL_HERE"
You, you're good you. thank's a lot for your help. that's just working fine actually, I have to wait for the end of the process, it's a big video file. will see if the video.mp4 is okay when it will be 100% downloaded.
get access dennied
thx, it's work!