Convert Amazon Video to MKV: Formats, Limits, and Steps.

If you're trying to convert Amazon Video to MKV or download Amazon Prime Video as MKV, first distinguish app-managed downloads from standard video files. MKV suits multi-track libraries, while MP4 generally has broader device support. This guide covers output settings, audio and subtitles, player compatibility, and the limits of Prime Video offline downloads.

Screen recording may capture audio without video, while the official app keeps downloads inside its own playback environment. Before downloading, decide which container your player supports and which audio and subtitle tracks you need.

What MKV Files Preserve

MKV (Matroska Video) and MP4 are multimedia container formats. A container holds video, audio, subtitles, and related metadata; it does not determine quality by itself. Video quality and file size come primarily from the selected codecs, bitrate, and resolution. MKV commonly supports multiple audio and subtitle tracks, while MP4 has broader native device support. For broader Amazon Video transcoding choices, the container is only one part of the decision.

Use the comparison below when choosing a container for Prime Video MKV files:

Embedded subtitles stay inside the video container; exporting an SRT creates a separate file. For either MKV or MP4, the player must support the video, audio, and subtitle formats inside it.

In practice, I would choose MP4 when a file needs to play on as many devices as possible. MKV is the better fit for a local library where multiple audio tracks, subtitles, and flexible player support matter more than universal compatibility.

Amazon Video to MKV: Official Downloads and Local Files

Official Prime Video downloads are not standard files that an ordinary converter can import. KeepStreams creates a separate MKV download rather than converting the app's stored copy. If you already have a standard MP4 that you are permitted to convert, remuxing can copy compatible audio and video streams into MKV without re-encoding them.

Prime Video app downloads remain tied to the supported app. Check how long Prime Video downloads last and distinguish subscription and rental access from the rules for purchased titles.

A black screen in a recording does not by itself identify HDCP as the cause. For HDMI playback on an external display, Amazon specifies HDCP 1.4 for HD and HDCP 2.2 for UHD/HDR. The screenshot below describes that connection requirement, not an MKV conversion setting.

Why Screen Recording Can Fail

Protected playback can cause ordinary recording tools to capture a black screen or audio-only output. Changing recorder settings does not guarantee a successful capture. A conventional recording also runs in real time and captures the selected playback audio and visible subtitles rather than the original set of selectable tracks. For capture limitations and troubleshooting, see Can You Screen Record Amazon Prime Video?

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Short clips may be workable when playback permits, but a full-title capture still depends on real-time playback and can fail.

What Official Downloads Allow

Image clarification: In the illustration below, TV app support refers to online streaming. The Chromecast and AirPlay restrictions apply to downloaded titles, not every type of Prime Video playback.

Prime Video downloads are available for eligible titles in supported apps, including the Windows and macOS apps. Availability and viewing periods vary by title, and the downloaded copy stays inside Prime Video rather than becoming a portable MKV or MP4 file.

The Android and Windows apps let you choose a download location. Amazon advises against saving downloads to USB-connected drives, and changing the location does not turn an app download into a portable MKV file. Downloaded titles cannot be played through Chromecast or AirPlay.

Device and Transfer Limits

Download Prime Video as MKV with KeepStreams

KeepStreams for Amazon saves supported titles as MKV or MP4 files on Windows and macOS, separately from Amazon's official app downloads. It mainly uses direct downloading and remuxing rather than real-time recording. The processing method depends on the title and current platform compatibility; choosing MKV does not itself guarantee that no re-encoding occurs.

A subscription, rental, or purchase provides viewing access, not automatic permission to make separate copies. Follow Amazon's terms and applicable law. Keep permitted copies for personal use, and do not upload, sell, or share them.

The Prime Video local-file download guide covers saving portable files on a computer. If playback inside Prime Video already meets your needs, the official app remains an option.

Use the trial to check your chosen title and player before purchasing. Review the update log and troubleshooting guide if analysis fails after a platform change, and read the purchase and refund terms before choosing a plan.

Download Amazon Prime Video as MKV in Five Steps

Follow these five steps on Windows or macOS to set MKV output, select the title and tracks, and check the completed file. The screenshots show an earlier KeepStreams interface; menu labels may differ in newer versions.

KeepStreams for Amazon

Save supported Prime Video movies and shows as MKV or MP4 for offline playback.

• Download supported Prime Video titles in up to 1080p.
• Choose MP4 or MKV output before downloading.
• Select multiple episodes from a supported season and download them in a batch.
• Automatically save new episodes for supported series.
• Keep selectable subtitles inside the MKV or export them as separate SRT files.
• Free trial: Download up to 3 full-length Prime Video movies or episodes within 30 days.

 FreeTrial  Free Trial

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Step 1: Install KeepStreams and select MKV. Download and install KeepStreams for Amazon from the official website. Before opening a title, select MKV in the output-format settings for Amazon/VIP downloads and save the change.

Choose the container and codecs separately. MKV and MP4 are file containers; H.264 and H.265 are video codecs. Changing the video codec does not switch the output from MP4 to MKV.

Reference screenshot: The image below shows General settings with MP4 selected. For Amazon downloads, use the output settings under VIP Services and select MKV before continuing; the displayed MP4 selection is not the setting used in this guide.

Step 2: Open Amazon. Enter a supported Prime Video URL or select Amazon under VIP Services on the left side.

Step 3: Sign in and analyze the title. Sign in to the Amazon account that can play the selected title, start playback, and wait for analysis to finish. If analysis does not start automatically, click the orange download button.

Step 4: Choose tracks and start the download. In the analysis window, select the episodes, resolution, video codec, audio language, and subtitle languages you need. To keep selectable subtitles inside the MKV, choose Remux Into File in the subtitle output menu shown below, then click Download Now. This subtitle setting does not change the video container selected in Step 1.

Step 5: Check the finished MKV. Follow progress in Downloading, then open Downloaded when the task finishes. Locate the saved .mkv file and check its audio and subtitle selections in your preferred player before adding a larger batch.

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Set MKV before downloading, then test one completed file in the player you plan to use. Available resolution, audio, and subtitles depend on the source title and current compatibility.

Conclusion

To convert Amazon Video to MKV, first distinguish app-managed downloads from standard local files. Amazon's official downloads stay inside Prime Video. With KeepStreams for Amazon, select MKV output before downloading, then choose the available title settings, audio, and subtitles. Check the finished file in your intended player.

Unlike recording videos from Prime Video, downloading lets you select the available tracks before saving a supported title. Use the Amazon trial allowance to check MKV output, audio, subtitles, and playback compatibility before purchasing.