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Thread: Can you inject or receive raw video/audio from wowza

  1. #1
    Join Date
    Nov 2013
    Posts
    3

    Question Can you inject or receive raw video/audio from wowza

    Hi,
    I am a developer that is evaluating using wowza for potential use in our product. We are wondering if there is a way to inject raw video data into the wowza transcoder(like in yuv4mpeg format) or get raw video data out of the wowza transcoder. Are either of these things possible?

    Thanks,
    Robin

  2. #2
    Join Date
    Jul 2012
    Posts
    299

    Default

    Robin,

    Raw data injection or extraction is not supported with the Transcoder AddOn. Can you be more specific about what you intend to accomplish? We may be able to provide a solution.

    -Tim

  3. #3

    Default

    Hi,

    Actually this is possible, but is part of the overlay APIs so you would need a stream going into the transcoder - could be just black - to add raw data to it.

    You can get frames with the

    ITranscoderFrameGrabResult , so onGrabFrame you can also convert it to a bufferedimage.

    When creating an overlay you can use TranscoderVideoOverlayFrame and pass a bufferedimage to it upon creation, so create the overlay with the image and then place onto the frame with the overlay APIs.

    This is all very very CPU intensive but does work however would need significant integration.

    Andrew.

  4. #4
    Join Date
    Nov 2013
    Posts
    3

    Default

    Thanks for the replies...

    We have other programs in our architecture that need the decoded video/audio. It would be optimal if we only had to decode the video/audio once in our workflow. To achieve this, we would either need Wowza to accept raw video/audio or send raw video or audio. Also, since we are getting MPEG2 TS (and Wowza does not accept it), we have to have 2 encodes in our workflow (one in ffmpeg to H264/AAC ts and one for ABR in the Wowza transcoder). If we could send Wowza the raw packets somehow, we could avoid the second encode.

    @Andrew - That solution does sound like it would use a ton of CPU... Also, if it is using the overlay API, it probably won't work with audio (we have video and audio that need to be processed and in sync).

    Thanks,
    Robin

  5. #5

    Default

    Hi,

    As a follow up to this Wowza will accept MPEG2 TS as input to the transcoder.

    Andrew

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