Trying to recover .crm files (Canon RAW video format)

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Troubleshooting .CRM File Recovery: A Note on Canon RAW Formats

Hello, fellow video enthusiasts!

I recently faced a challenging situation while trying to recover some crucial Canon RAW video files, specifically those with the .crm extension. I managed to successfully restore the deleted files using a powerful recovery tool called DMDE. The initial signs were promising—the file sizes appeared normal, leading me to believe that the recovery process had been successful.

However, upon importing these files into DaVinci Resolve for editing, I encountered a frustrating issue: the video displayed no visuals and produced nothing but white noise for audio. This has left me pondering what went wrong during the recovery process.

I suspect that DMDE may have attempted to restore these files based on the CRM signature associated with a Canon C70 camera. Given that my footage was recorded on a Canon C80, this mismatch might be the reason behind the malfunctioning playback.

If anyone has experience with similar recovery issues or any insights into working with .crm files from different Canon models, your expertise would be greatly valued!

Thank you in advance for your help, and I look forward to hearing your thoughts! 😊

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One Comment

  1. Re: Troubleshooting .CRM File Recovery: A Note on Canon RAW Formats

    Hi there,

    Recovering RAW video files, especially proprietary formats like .crm from Canon cameras, can be quite challenging. Your suspicion about signature mismatch is very insightful—recovery tools like DMDE identify files based on specific signatures, and if the signature doesn’t match the actual camera model, the integrity of the recovered files might be compromised.

    Here are some suggestions that might help:

    • Use Canon’s official software: Canon provides dedicated software like the Canon EOS Utility or Digital Photo Professional (DPP), which sometimes include utilities for handling RAW video formats or at least verifying file integrity.
    • Check for specialized recovery tools: There are recovery programs tailored to Canon RAW formats or professional-grade tools like Recovery Toolbox for Canon cameras / video files, which might better understand the .crm format and maintain file integrity.
    • Verify the file signature: You can analyze the recovered files with a hex editor to examine their headers. Comparing a known good .crm file from a Canon C80 versus your recovered files may reveal signature discrepancies.
    • Convert or transcode: If the files are partially recoverable but cannot be imported directly, consider transcoding tools or contact Canon support for guidance on converting or repairing .crm files.
    Reply

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