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Thread: Overlapping content when splitting

  1. #1
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    Default Overlapping content when splitting

    I split the radio shows I record in 2 minute long files.

    After every split, the next file contains about 20 seconds of the end of the previous file.

    Is there a way to eliminate this or change the length of overlap?

    Thanks.

  2. #2
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    Default Re: Overlapping content when splitting

    This is due to buffering. The only solution is to use audio capture. The amount of buffering is dependent on your Internet connection and the server on the other end.

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    Default Re: Overlapping content when splitting

    I have to assume that this technically possible, but just not a capability of the current version of the software. The input stream is kept in buffer until written out. If chunks of that stream were popped off to a secondary write buffer for each output file, then there's no reason that portions of that content should be duplicated across 2 files.

    Eg:
    Input Buffer 1-second Chunks: abcdefghijk

    Output File 01.snd buffer: abcde

    When the split occurs, a second buffer is created
    Output File 02.snd buffer: fghijk

    When the next split occurs you just re-use the old buffer.

    This should work fine. You could then add the option to allow a pre-determined amount of overlap if someone actually wanted that. In that case you could fork n-seconds of chunks into both buffers:

    Output File 01.snd buffer: abcDE
    Output File 02.snd buffer: DEfghijk


    I propose this as an enhancement for a future version. I really need to split multi-hour recordings, but the overlap makes this impractical since I can play the split files back-to-back in a seamless fashion. I don't want to do audio capture due to the loss of quality.

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    Default Re: Overlapping content when splitting

    Thanks for the feedback. Our developers do read the forums all the time so perhaps.

  5. #5
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    Default Re: Overlapping content when splitting

    Quote Originally Posted by JonQ View Post
    I have to assume that this technically possible, but just not a capability of the current version of the software. The input stream is kept in buffer until written out. If chunks of that stream were popped off to a secondary write buffer for each output file, then there's no reason that portions of that content should be duplicated across 2 files.

    Eg:
    Input Buffer 1-second Chunks: abcdefghijk

    Output File 01.snd buffer: abcde

    When the split occurs, a second buffer is created
    Output File 02.snd buffer: fghijk

    When the next split occurs you just re-use the old buffer.

    This should work fine. You could then add the option to allow a pre-determined amount of overlap if someone actually wanted that. In that case you could fork n-seconds of chunks into both buffers:

    Output File 01.snd buffer: abcDE
    Output File 02.snd buffer: DEfghijk


    I propose this as an enhancement for a future version. I really need to split multi-hour recordings, but the overlap makes this impractical since I can play the split files back-to-back in a seamless fashion. I don't want to do audio capture due to the loss of quality.
    If I'm not mistaken, Replay Music makes a split when the volume is too low. Another problem is that splitting will never be perfect in case of doing it automatically. And you don't need to re-record. You can use lossless MP3 splitting software instead.

    If anybody else needs auto splitting, please post here. As Cheryl mentioned, the developers do read the forums.

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