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Activity Forums VEGAS Pro Rendering audio as PCM Little Endian Sony Vegas 12

  • Rendering audio as PCM Little Endian Sony Vegas 12

    Posted by Michael Gibrall on December 16, 2013 at 5:29 am

    Where exactly do I go to render the audio of my project only with little endian for a PCM file under WAV in Sony Vegas 12? Do I need some kind of plugin for this?

    Thanks in advance.

    Norman Black replied 12 years, 7 months ago 3 Members · 6 Replies
  • 6 Replies
  • John Rofrano

    December 16, 2013 at 2:36 pm

    [Michael Gibrall] “Where exactly do I go to render the audio of my project only with little endian for a PCM file under WAV in Sony Vegas 12?”

    Try the Wave (Microsoft) (*.wav) output format with one of the PCM templates. You don’t get to select the endian-ness… that’s determined by your computer architecture. All Intel PC’s are little endian by default.

    ~jr

    http://www.johnrofrano.com
    http://www.vasst.com

  • Michael Gibrall

    December 16, 2013 at 3:10 pm

    Thank you!

  • Norman Black

    December 16, 2013 at 5:20 pm

    [John Rofrano] ” You don’t get to select the endian-ness… that’s determined by your computer architecture. All Intel PC’s are little endian by default.”

    Yes, Windows PCs are little endian, but the output and input file formats can be either.

    The XDCAM EX MP4 outputs PCM audio in big endian format as listed by the mediainfo utility. The source was little endian PCM.

    I did a render using Wave (Microsoft) (*.wav) template and got little endian PCM output. The source was little endian PCM.

  • John Rofrano

    December 16, 2013 at 7:26 pm

    [Norman Black] “The XDCAM EX MP4 outputs PCM audio in big endian format as listed by the mediainfo utility. The source was little endian PCM.”

    Wow, why would they use big-endian? That’s really strange. Maybe the chips in the Sony cameras use big-endian architecture? Anyway my point was, PCM audio on in Intel platform will be little-endian.

    ~jr

    http://www.johnrofrano.com
    http://www.vasst.com

  • Michael Gibrall

    December 16, 2013 at 8:02 pm

    Thanks guys. I need to have the audio file in this format per a distribution company’s requirement for dvd and SD streaming release.

    The film was shot on DSLR with audio recorded separately. In most, but not all cases, the audio operator used high end audio equipment. I’m assuming it doesn’t matter as long as the output is in the end user format they wanted?

    Thanks in advance.

  • Norman Black

    December 16, 2013 at 8:57 pm

    [John Rofrano] ” Anyway my point was, PCM audio on in Intel platform will be little-endian.”

    Not necessarily true, but the likely case.

    The XDCAM EX encoder on my PC from Vegas generated the big endian PCM audio. The Vegas encoder probably uses Big endian because as you are probably right, that the cameras generated PCM in big endian format. The Vegas software encoder generating a file exactly the same as a camera would.

    Any software tool worth its salt would accept input in any endian format. It is trivial to swap the endian of the data stream on the fly as you read the stream.

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