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  1. 18th Jan 2022 01:28 #1
    Aleksid1
    Aleksid1 is offline
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    Hi,

    How can I improve visual quality of Dissolve transitions between still images with libx264 in FFmpeg? It's not bad, but I can see artefacts of a compression.
    Also banding may appear on a gradient of a blue sky.

    I use the following options: -refs 4 -bf 3 -g 250 -crf 22
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  2. 18th Jan 2022 06:04 #2
    El Heggunte
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    So it is a slideshow?
    I recommend 0 b-frames and a short gop (maximum = 5 seconds). Also, 10-bits instead of 8-bits.
    There exist some custom builds of x264 which use the famous "fade compensation patch", you might want to give them a try.
    "Programmers are human-shaped machines that transform alcohol into bugs."
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  3. 18th Jan 2022 07:08 #3
    Aleksid1
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    Many thanks for your advices! I'll experiment with these settings and will try to find that patch for x264
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