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Thread: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

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  1. #1

    Join Date
    Jun 2008
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    Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    All of a sudden I get the following error on a lot of files: "Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File". What does the error "Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File" mean? Is this a corrupt file? It's different from "md5 did not match decoded data, file is corrupt. for source file:".

    Cheers,
    Dennis.

  2. #2
    Administrator
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    Apr 2002
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    43,855

    Re: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    It means the file is so corrupted no data can be decoded.

  3. #3

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    Re: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    So this means I need to re-rip the 144 files mentioned in the log files.

  4. #4
    dBpoweramp Guru
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    Re: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    Quote Originally Posted by verypsb View Post
    So this means I need to re-rip the 144 files mentioned in the log files.
    I take it that means you don't have a backup?
    How long has it been since you've accessed these files be it for listening, converting, tagging etc as that's a lot of files to have suffered from data corruption all at once, unless there's something else going on; do you recognise any pattern to the files e.g. were they recently edited?

    If there are any FLAC files that you weren't synching it might be worth performing a TEST CONVERSION in Music Converter against them.

  5. #5

    Join Date
    Jun 2008
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    Re: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    I backup daily, but lost some recent backups, around the same time TuneFUSION started complaining about corrupt files. That's Murphy's Law for you. However , I found a two month old backup, restored the files and don't get the results I would expect. The same files are still corrupted according to TuneFUSION.
    During these two months TuneFUSION synchronized those files weekly and started complaining just last week. Why didn't TuneFUSION complain some two months earlier if these files are corrupted?
    I don't see any pattern in the files that are corrupted according to TuneFUSION. Another tool, ROON, does analyze the same files and doesn't seem to have a problem with them. Some files were probably played recently, other files weren't played in a long time. What am I missing?
    Last edited by verypsb; 08-25-2022 at 04:57 PM.

  6. #6
    dBpoweramp Guru
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    441

    Re: Encountered 'FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC' in FLAC File

    Quote Originally Posted by verypsb View Post
    I backup daily, but lost some recent backups, around the same time TuneFUSION started complaining about corrupt files. That's Murphy's Law for you. However , I found a two month old backup, restored the files and don't get the results I would expect. The same files are still corrupted according to TuneFUSION.
    During these two months TuneFUSION synchronized those files weekly and started complaining just last week. Why didn't TuneFUSION complain some two months earlier if these files are corrupted?
    I don't see any pattern in the files that are corrupted according to TuneFUSION. Another tool, ROON, does analyze the same files and doesn't seem to have a problem with them. Some files were probably played recently, other files weren't played in a long time. What am I missing?
    I'd try verifying them individually.

    Assuming you're on Windows download flac, extract it, then copy the 'flac-1.3.4-win\win64\flac.exe' into a new folder where you'll test some of your flacs.
    Copy some of the failed flac files into that directory and then open a command prompt and go to the directory where you placed those files.
    Then run 'flac -t nameofflac.flac' and check the results.

    If you're on Linux 'sudo apt install flac' - assuming you're on a debian based distro.

    Here's a more detailed guide and alternatives.
    Last edited by simbun; 08-25-2022 at 05:32 PM.

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