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  1. Member
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    i see LPCM, but not the other in ffdshow. trying to open a movie and it says cannot open .....pcm
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  2. tgpo famous MAC commercial, You be the judge?
    Originally Posted by jagabo
    I use the FixEverythingThat'sWrongWithThisVideo() filter. Works perfectly every time.
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  3. Member FulciLives's Avatar
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    Do you know what audio format you have in that there movie file?

    Use MediaInfo and/or GSpot to find out.

    - John "FulciLives" Coleman
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  4. Member
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    Originally Posted by FulciLives
    Do you know what audio format you have in that there movie file?

    Use MediaInfo and/or GSpot to find out.

    - John "FulciLives" Coleman
    PCM

    don't seem to see any codecs for that though
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  5. Member FulciLives's Avatar
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    What type of file is it?

    I have a feeling it really is not PCM which is why I suggested you try MediaInfo or GSpot.

    Did you do that? If so please post the results.

    - John "FulciLives" Coleman

    P.S.
    Read this ---> https://forum.videohelp.com/topic271697.html
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  6. If it truly is PCM, you can convert it to FLAC (lossless) or something else like AC3 with eac3to.
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  7. Member edDV's Avatar
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    LPCM implies a linear transform as opposed to log base 10 or other.

    LPCM is similar to uncompressed wav, 16/12bit DV camcorder tracks or many 8bit mono digital camera tracks.

    What is your source?
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    mediainfo says i have AVC video, and PCM audio. when I demux it with tsMuxerGUI i get one .264 vid stream, and 2 wav files, one 4G and one 673MB. I merged them together with mkvmerge, and at first i got some stuttering with the video. i then just merged the one large wav file with the .264 and the movie is playing, i don't think i'm getting 5.1 sound though. i played it through some action scenes where they surely should have been some full 5.1 action going on, but nothing came out. it's supposed to be a 6 channel audio stream. i then loaded the original iso of the movie to see what it sounded like, it contains the original PCM audio source of course, and i didn't hear anything from that either though, using the same scene. it's definitely not my system, so not sure what to think now. i tried playing the smaller wav file and it was just dialog, i'm not sure if it needs to be included in mkvmerge, or if the two need to be merged somehow before i stick them into mkvmerge.

    thx,
    rlr
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  9. Member edDV's Avatar
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    PCM is mono for one stream, stereo for two and so on. As I said, it is uncompressed.

    Digital camera chips mostly produce simple PCM often just 8 bit mono.
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    Originally Posted by edDV
    PCM is mono for one stream, stereo for two and so on. As I said, it is uncompressed.

    Digital camera chips mostly produce simple PCM often just 8 bit mono.
    i don't get what you're saying, what about the two wav files?
    mediainfo says movie is 6 channel sound.
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  11. Member edDV's Avatar
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    Originally Posted by runLoganrun
    Originally Posted by edDV
    PCM is mono for one stream, stereo for two and so on. As I said, it is uncompressed.

    Digital camera chips mostly produce simple PCM often just 8 bit mono.
    i don't get what you're saying, what about the two wav files?
    mediainfo says movie is 6 channel sound.
    I've never heard of a 6 channel wave unless it is 6 separate wavs, each a single channel. DVD allows up to 8 wav files but players only play pairs as stereo. This grouping is done during authoring.

    BluRay may support 8 PCM as uncompressed 7.1 surround. Maybe somebody else knows.
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    Originally Posted by edDV

    BluRay may support 8 PCM as uncompressed 7.1 surround. Maybe somebody else knows.
    it's only after i demux w/ tsMuxerGUI that i get the 2 wav files, it must convert the original file, which mediainfo says is the PCM 6 channel stream.
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  13. Originally Posted by edDV

    I've never heard of a 6 channel wave unless it is 6 separate wavs, each a single channel. DVD allows up to 8 wav files but players only play pairs as stereo. This grouping is done during authoring.

    BluRay may support 8 PCM as uncompressed 7.1 surround. Maybe somebody else knows.

    Yes many Blu-Ray movies have 7.1 raw PCM; you can also have 6-channel .wav (in a single track) or 6-channel mono .wav (as 6 separate tracks

    @runLoganrun - I suggested this earlier, you can use eac3to to convert to flac (lossless), which is much smaller than the uncompressed PCM. Also, many more software players support flac vs. raw PCM. Another reason to use eac3to is that many blu-ray titles have gaps and overlaps that will cause sync issues, these gaps are repaired by eac3to

    If your particular title has specific problems with stream detection, send a sample stream to madashi over at the doom9 forum ( http://forum.doom9.org/showthread.php?t=125966 ), and he will usually fix it usually very quickly.

    Cheers

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    Originally Posted by poisondeathray
    Originally Posted by edDV

    I've never heard of a 6 channel wave unless it is 6 separate wavs, each a single channel. DVD allows up to 8 wav files but players only play pairs as stereo. This grouping is done during authoring.

    BluRay may support 8 PCM as uncompressed 7.1 surround. Maybe somebody else knows.

    Yes many Blu-Ray movies have 7.1 raw PCM; you can also have 6-channel .wav (in a single track) or 6-channel mono .wav (as 6 separate tracks

    @runLoganrun - I suggested this earlier, you can use eac3to to convert to flac (lossless), which is much smaller than the uncompressed PCM. Also, many more software players support flac vs. raw PCM. Another reason to use eac3to is that many blu-ray titles have gaps and overlaps that will cause sync issues, these gaps are repaired by eac3to


    If your particular title has specific problems with stream detection, send a sample stream to madashi over at the doom9 forum ( http://forum.doom9.org/showthread.php?t=125966 ), and he will usually fix it usually very quickly.

    Cheers


    actually i went and checked out the stream from the original file again. i'm re-encoding from iso's that i made with tsmuxer and imaged w/ imgburn, so i had taken out all the excess streams already. anyway i may have taken out an audio stream that i didn't want to, according to mediainfo the pcm file from the ripped BD disc iso the PCM stream is only one channel. I think there was an 640 ac3 stream on there too, i know there was something. do they sometimes use two streams for audio? or is it maybe that i should've just ripped the other stream from original disc?

    thx,
    rlr
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  15. aBigMeanie aedipuss's Avatar
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    the player only uses one active stream to play the audio. the one you wanted was probably the 6 ch. one. a single channel stream would be something like a narrative or director's comments.

    6 ch. wavs are a valid bluray audio, and they can be up to 9 ch. wav.
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