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Codec trouble. Media Player windows 11 pro

Egon Barbosa 0 Reputation points
2026-06-17T11:59:59.8933333+00:00

Videos coded at apc format dont play at media pleyer on windows pro 11. I have instaled several codec packs, but the problem remains.

Windows for home | Windows 11 | Apps
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  1. IGYQ 19,610 Reputation points Independent Advisor
    2026-06-17T12:56:22.2333333+00:00

    Hi!

    Welcome to Microsoft Q&A forum.

    Can I ask what exact error are you getting from Media Player?

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  2. Horace Wiggins 440 Reputation points
    2026-06-17T13:55:32.69+00:00

    https://techterms.com/definition/codec

    Did you check Windows Media Player to see what it can play?https://techterms.com/definition/mpeg

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  3. IGYQ 19,610 Reputation points Independent Advisor
    2026-06-17T13:09:01.9166667+00:00

    If even creating a new user profile results to low disk space, you really need to check your files and free them up by deleting old/unused files may it be Videos/Images( which can eat up big space compared to other files). Start doing that first so we can do troubleshooting properly.

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  4. Senthil kumar 685 Reputation points
    2026-06-17T12:07:17.6833333+00:00

    Hi @Egon Barbosa

    APC codec is not supported directly to media player. please make sure this videos from DVR right. better way you have to convert or export the file DVR format to MP4 format.

    Thanks.

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  5. AI answer

    2026-06-17T12:00:14.75+00:00

    APC‑encoded video uses a codec that Windows Media Player on Windows 11 does not include by default. Installing generic codec packs often does not help and can even cause playback problems.

    Use these steps instead:

    1. Confirm the missing codec
      1. Right‑click one of the APC video files in File Explorer and select Properties.
      2. Go to the Details tab and check the Video section for the codec name/ID.
      3. If the codec field is blank or shows an unknown codec, this confirms that Windows doesn’t have the right decoder.
    2. Avoid random codec packs The documentation strongly discourages installing large “all‑in‑one” codec packs from the internet because they can:
      • Cause serious playback problems in Windows Media Player
      • Corrupt the system
      • Make troubleshooting harder
    3. Get the correct codec from a trusted source
      1. If the APC codec name or ID is known, search specifically for that codec and go to the official codec manufacturer’s website.
      2. Download and install only that codec (or the official pack from that vendor), not a generic third‑party pack.
      3. After installation, restart Windows Media Player and try the file again.
    4. Let Windows Media Player use installed codecs Windows Media Player can use codecs that are already installed in Windows:
      • Make sure Windows is fully updated (Settings > Windows Update > Check for updates).
      • Then reopen the APC file in Windows Media Player and test playback.
    5. If playback still fails
      • The APC codec may not be available for Windows Media Player, or only via non‑Microsoft third‑party software.
      • In that case, use a different player that includes native support for the APC codec, or convert the APC videos to a format that Windows Media Player supports by default (for example, MP4/H.264) using a trusted conversion tool.

    For any future codecs, always install only from trusted, official sources and consider creating a system restore point before installing.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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