Step 1: Upload your AIFF files using the button above or by drag and drop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Download your converted MKV files.
AIFF to MKV Conversion FAQ
Why would I convert AIFF audio to a MKV video?
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A MKV video plays everywhere a raw AIFF sometimes will not — most notably on video-only platforms and social feeds that require a video container. It is the standard way to publish a podcast, song, or mix as a shareable MKV.
Can I batch-convert many AIFF files to MKV?
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Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Is the AIFF to MKV conversion free?
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Yes, within the free size limit. PRO unlocks much larger AIFF uploads, longer durations, and parallel jobs.
How long can the AIFF be?
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Full-length albums and multi-hour AIFF recordings convert fine. Because the picture is static, even a long MKV stays modest in size relative to a filmed video of the same length.
Will the MKV play on YouTube, Instagram, and TikTok?
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Yes. PDF.to encodes the MKV with a widely supported codec and pixel format, so the resulting video uploads cleanly to the major platforms that reject bare AIFF audio.
Are my AIFF files private during conversion?
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Yes. Uploads travel over HTTPS, nobody reads the contents, and nothing is shared. Your uploaded AIFF and the resulting MKV are deleted from our servers automatically about 24 hours after the conversion, which leaves time to download the result.
