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  1. Member
    Join Date
    Oct 2015
    Location
    Bhokraha-01, Sunsari ( Nepal )
    Search Comp PM
    i want to know about Video Level
    and
    How To Change High@4.1 to Baseline / simple @ 1.1 or any
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  2. Member
    Join Date
    Jan 2007
    Location
    United States
    Search Comp PM
    those specs refer to compression and codec spec levels
    NOT to visual level on the display
    to make the change you are asking means RE-coding the file using a level one codec
    it also usually means a bigger file size for the same visual quality

    somebody else will post a better explanation
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  3. Member
    Join Date
    Aug 2013
    Location
    Central Germany
    Search PM
    The Profile@Level information depends on the speed and feature limits of a decoder used in a playback device. Powerful decoder chips in home cinema players will support a higher profile and level than power saving decoder chips with low integration (transistor count) in mobile devices.

    To create a video stream compatible to a specific maximum Profile@Level, you may have to reduce the bitrate and the complexity of other encoder options, maybe even the resolution and framerate of the source video, to "make the video stream easy to decode" to avoid excessive demands of the decoder chip, which may cause video stuttering or even a decoder crash.

    There are tools which can patch the Profile@Level flag in an AVC video stream so that decoders will not refuse a video outside the limits a priori; but still, if the limits are exceeded, the decoder may fail. So the safer way to produce compatible material is to prepare the video attributes and the encoder options accordingly before encoding. This requires to know the limits of your target playback device.

    You can find numbers e.g. in the Wikipedia article about AVC (H.264); but they may not be very intuitive. Values in dimensions like "decoded blocks per second" require further calculations to know the relation between frame rate, frame resolution, and more details.
    Last edited by LigH.de; 12th Jan 2016 at 02:19.
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  4. Originally Posted by Aashik Alam View Post
    How To Change High@4.1 to Baseline / simple @ 1.1 or any
    See this: http://coolsoft.altervista.org/en/h264leveleditor
    Download: http://coolsoft.altervista.org/en/h264leveleditor#download
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