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Changes between Version 57 and Version 58 of Encodings


Ignore:
Timestamp:
01/12/17 11:51:52 (5 years ago)
Author:
Antoine Martin
Comment:

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Legend:

Unmodified
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  • Encodings

    v57 v58  
    11[[Image(http://xpra.org/icons/encoding.png)]]
    22= Picture Encodings =
    3 
    4 This page is strongly related to [/wiki/WindowRefresh WindowRefresh], the [/wiki/Network Network] and [/wiki/ClientRendering client rendering] are also relevant.[[BR]]
    5 For video encodings ([/wiki/Encodings/vpx vpx] and h264), [/wiki/CSC colorspace conversion] is also required reading.
    63
    74[[BR]]
     
    2825}}}
    2926
     27
    3028{{{#!div class="box"
    3129== Choosing an Encoding ==
     
    4947
    5048{{{#!div class="box"
    51 == [/wiki/CSC Colourspace conversion step - CSC] ==
     49== Related Links ==
    5250
    53 Before sending the pixels to the video encoder, xpra may need to first call a colourspace conversion step, (some newer versions of x264 support {{{BGRA}}} pixels as input directly) it is also required when downscaling the video.
     51This page is related to [/wiki/WindowRefresh WindowRefresh], the [/wiki/Network Network] and [/wiki/ClientRendering client rendering] are also relevant for understanding the end to end pixel transmission process.[[BR]]
    5452
    55 See: [/wiki/CSC Colourspace conversion step - CSC]
     53For video encodings, see [/wiki/Encodings/vpx vpx] and h264.
     54
     55Before sending the pixels to the video encoder, xpra may need to first call a colourspace conversion step, (some newer versions of x264 support {{{BGRA}}} pixels as input directly) it is also required when downscaling the video. See: [/wiki/CSC Colourspace conversion step - CSC]
    5656}}}
    5757
     
    6060== Tuning ==
    6161The best way to choose the right option is through [/wiki/Testing].
     62
    6263Though you may find some [http://alax.info/blog/1394 good illustrations] online to give you an idea of the trade offs.
    6364(ie: [http://blog.malayter.com/2010/12/presets-versus-quality-in-x264-encoding.html fps vs noise], [http://blogs.motokado.com/yoshi/2011/06/25/comparison-of-x264-presets/ fps vs size])
    6465Be aware that the lossless auto-refresh will trigger a lossless frame encoded using png or rgb. If the delay is too low, it may negate the benefits of using efficient compression.
     66We have collected some [/wiki/Encodings/Statistics encoding statistics] with an older version.
    6567
    6668=== Notes ===