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Rendering to AV1

  • PlasmPlayer
  • July 21, 2022 at 3:28 PM
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  • PlasmPlayer
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    • July 21, 2022 at 3:28 PM
    • #1

    I've been using HEVC with Voukoder for a while now, but After the updates to the AV1 after finally updating, rendering does not take a long as it used to with the SVT support. For 1440p game recordings i have it set for 2,000 kbit with a max bitrate of 10,000 kbit, ultra fast preset, and main tier. The quality of the videos look really good in my opinion. a 20 minute 1440P video ended up being 340 MB in size. Very good file size to quality compared to h.264 and h.265(HEVC)

    I dont see too much information for AV1 out in the wild. I am wondering who else is using the AV1 codec and what settings they are using. I haven't played mych with the constrained variable bitrate, or the constant quantizer yet.

  • Vouk July 21, 2022 at 4:33 PM

    Approved the thread.
  • Oliver M.D
    Beginner
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    • July 24, 2022 at 4:38 PM
    • #2

    Personally I much prefer CRF over a set bitrate, and going with a value of 20-30 is usually a pretty safe bet. Just go by the default values that Intel set for SVT-AV1, then adapt them to your needs. For v1.0 that would be Preset 10 with CRF 35, for example. But note that, if I remember correctly, Voukoder is still stuck on v0.9, while the most recent version is 1.1x.

    Most of these options aren't relevant to Voukoder, but I'm posting them for context: SVT-AV1 Github

  • Vouk
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    • July 24, 2022 at 6:24 PM
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    • #3

    Strange, I was always building from master which should be most recent. But I have set it to 1.1.0 now.

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  • Oliver M.D
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    • July 25, 2022 at 6:17 PM
    • #4
    Quote from Vouk

    Strange, I was always building from master which should be most recent. But I have set it to 1.1.0 now.

    Very happy to read that, now we just need a download.

  • iAvoe
    x264/x265 Expert
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    • August 2, 2022 at 2:44 AM
    • #5

    AV1 is still under dev, and does not provide a stable image output, and you might not able to view render results on mobile phones unless you have a good media player app. Generally not recommeded for reliability dependant workloads

  • iAvoe
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    • August 2, 2022 at 2:48 AM
    • #6

    And, unless new compression methods show up, AV1 is more of a cranked up x265 with depreciated features due to slowness added back, but I could be wrong since I have not been following updates

  • PlasmPlayer
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    • August 2, 2022 at 7:34 PM
    • #7

    I guess my email notifications are not working, I just decided to check out my post here.

    Would the constant quantizer be the same as the CRF?

  • Oliver M.D
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    • August 3, 2022 at 3:27 PM
    • #8

    They're similar-ish, but function differently. Preferably use CRF if possible, it will result in smaller file-sizes, or more "optimized" if you wanna think of it that way.

  • PlasmPlayer
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    • August 3, 2022 at 4:48 PM
    • #9

    ok, i thought they were the same because i did not see the option for CRF in the options. I also do not see the option for the preset number.

  • Oliver M.D
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    • August 3, 2022 at 6:04 PM
    • #10

    Sorry for the confusion mate. I mostly use (SVT-)AV1 through FFMPEG, where it does support CRF, so I didn't notice Voukoder only having CQ as an option.

    You can see the preset number in the lil box below all the other options

    Preset 8 = Ultra Fast

    Preset 10 = Warp 9.975

  • Vouk
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    • August 3, 2022 at 6:22 PM
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    • #11

    Didn't know CRF is available for svt-av1. Adding it now ...

    Edit: Need to migrate to FFmpeg 5.1 first.

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  • PlasmPlayer
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    • August 11, 2022 at 3:21 PM
    • #12
    Quote from Vouk

    Didn't know CRF is available for svt-av1. Adding it now ...

    Edit: Need to migrate to FFmpeg 5.1 first.

    When can we expect a version with FFmpeg 5.1?

  • Vouk
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    • August 11, 2022 at 3:30 PM
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    • #13

    The next version will be based on FFmpeg 5.1. I don't have any release date yet.

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  • PlasmPlayer
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    • August 11, 2022 at 3:35 PM
    • #14
    Quote from Vouk

    The next version will be based on FFmpeg 5.1. I don't have any release date yet.

    Great news! Just joined your patreon.

  • Oliver M.D
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    • August 13, 2022 at 5:55 AM
    • #15
    Quote from Vouk

    The next version will be based on FFmpeg 5.1. I don't have any release date yet.

    First you give us the newer NVENC presets, and now even 5.1? Talking about a lot of gifts!

  • Howard Vigorita
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    • September 9, 2022 at 7:33 AM
    • #16

    Just tried Voukoder 11.1-IntelARC with an Intel Arc a380 board and was able to do hardware renders for AV1(Intel QSV) in both Vegas 20 and Resolve18 Studio. But not with 11.3.2. Curious what ffmpeg is used for 11.1... I cannot find an ffmpeg with "av1_qsv" as an encoder... only as a decoder in 5.1-full.

  • Vouk
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    • September 9, 2022 at 7:52 AM
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    • #17

    The changes required for av1_qsv are not part of the latest stable FFmpeg 5.1 release yet. It is currently custom built from an unstable version where issues have been experienced already. Once FFmpeg supports it in a stable release (maybe 5.2?) it will be fully supported in the normal voukoder release.

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  • Howard Vigorita
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    • September 9, 2022 at 6:01 PM
    • #18

    Thanks. Also, for some reason not seeing h264_qsv or hevc_qsv encoders on my systems with uhd630 or uhd750 igpus if I install 11.3.2. But they do show up if I install 11.1. Can also encode with them in Win releases of ffmpeg 5.1 from gyan and btbn.

  • Vouk
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    • September 9, 2022 at 6:42 PM
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    • #19

    I don't know about this. The IntelArc release (and also all future later versions of Voukoder) is using Intels new OneVPL framework instead of MFX. I'm not sure if the supported chipsets change with this switch.

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  • Howard Vigorita
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    • September 9, 2022 at 7:41 PM
    • #20

    Here's the Voukoder dialog/codecs I get on a 9900k/uhd630/Radeon7 system with Voukoder 11.1 running Vegas 20:

    The Intel Qsv stuff goes away if I update to 11.3.2. Same deal on my 11900k/Arc380/6900xt system except I see more qsv with 11.1... adds qsv av1 and qsv vp9. But only if I point windows to Intel in display/graphics entries for the host app... set either to power saving (win10) or specific gpu (latest win11). When I run ffmpeg 5.1 itself, it is only influenced by the windows setting for decoding, not encoding. It just doesn't have av1_qsv and vp9_qsv but it's got the other 2 encoders no matter what the windows setting is.

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  • YouTube
  • AV1
  • Sony Vegas pro 18

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