[Cin] xavc-intra class 480

[Andrea paz]

I tester the presets top. All' OK.
In my opinion Is best to rename the presets in AVC_Intra.mp4

Il mar 29 apr 2025, 00:00 Andrew Randrianasulu <randrianasulu at gmail.com> ha
scritto:

>
>
> вт, 29 апр. 2025 г., 00:54 Phyllis Smith <phylsmith2017 at gmail.com>:
>
>> Checked into GIT a modified AVC_Intra_100.mp4 with a comment added at the
>> beginning:
>>
>>>   # Modify the 100 in avcintra-class=100 to 200, 300 or 480 as needed.
>>>
>> and removed "level=4.1" since in my testing that was the default for
>> avcintra-class=100. So users will not have to modify the level number when
>> modifying the class number (200 is level 5 by default).
>>
>> That is the beauty of the render formats --users can easily change
>> values.  BTW - it creates a huge file when you get to level 200 so I did
>> not test 300 or 480.
>>
>
> yeah ... thanks for testing!
>
>
>
>
>
>> P.S. I forgot to test/checkin AVC_Intra_100.mov but will not forget to do
>> so later.
>>
>> On Fri, Apr 25, 2025 at 4:16 PM Andrew Randrianasulu <
>> randrianasulu at gmail.com> wrote:
>>
>>>
>>>
>>> сб, 26 апр. 2025 г., 01:04 Phyllis Smith <phylsmith2017 at gmail.com>:
>>>
>>>> Andrew, should these be checked into GIT source as is?  I was waiting
>>>> to see if any followup on your 2 question commentaries.
>>>>
>>>
>>> Honestly I am mot sure, difference is small, may be we can collapse all
>>> 200/300/480 lines as comments in already existing avcintra100 profile?
>>>
>>>>
>>>> On Mon, Apr 21, 2025 at 4:33 PM Andrew Randrianasulu <
>>>> randrianasulu at gmail.com> wrote:
>>>>
>>>>> I tried to add other xavc classes as mp4 profiles (see attached patch,
>>>>> do not forgot to make install after patching), but without altering bt709
>>>>> x264 params line - may be we should comment it so it can be overridden by
>>>>> bt2020 colorimetry?
>>>>>
>>>>> also, those does not set flavor sony, may be they should?
>>>>>
>>>>> I also try to develop xavc mxf profiles on desktop (those are from
>>>>> Termux, 3 fps encode at FHD ;)
>>>>>
>>>>> вт, 22 апр. 2025 г., 00:54 Andrew Randrianasulu <
>>>>> randrianasulu at gmail.com>:
>>>>>
>>>>>> In attempt at speeding up hdr10 4k HEVC video playback I tried to
>>>>>> re-encode it into AVC-intra using this guide:
>>>>>>
>>>>>>
>>>>>> https://www.voukoder.org/forum/thread/1163-replicate-sony-s-xavc-i-s-format/
>>>>>>
>>>>>> basically either
>>>>>>
>>>>>> ffmpeg -i input -c:v libx264 -avcintra-class 480 -pix_fmt yuv422p10le
>>>>>> -preset ultrafast -x264opts avcintra-flavor=sony -c:a pcm_s24le -ar
>>>>>> 48k output.mxf
>>>>>>
>>>>>> or for half size
>>>>>>
>>>>>>  ffmpeg -i
>>>>>> ~/K38_sdcard1/Documents/iPhone11_4K-recorder_59.940HDR10.mov
>>>>>> -s 1920x1080 -c:v libx264 -avcintra-class 200 -pix_fmt yuv422p10le
>>>>>> -preset ultrafast -x264opts avcintra-flavor=sony -c:a pcm_s24le -ar
>>>>>> 48k output-half.mxf
>>>>>>
>>>>>> Note, line errors out when I tried class 480 for 1920x1080 frame size
>>>>>>
>>>>>> Both files load into cingg
>>>>>>
>>>>>> Original file (4k hdr hevc, 59.94 fps) plays at around 22 fps at
>>>>>> output x11, project rgba-float. But seeking is sad. Not to mention
>>>>>> lack of tonemapping.
>>>>>>
>>>>>> First 4k avc-intra 4k reencode plays at around 33 fps and seeks much
>>>>>> better (no artefacts)
>>>>>>
>>>>>> 1920x1080 proxy plays at 60 fps, and if I check play every frame and
>>>>>> try 2x speed forward - at 83 Fps.
>>>>>>
>>>>>> But trying two FullHD tracks referencing same "proxy" file set to
>>>>>> different fade leves with project set to RGBA-float kills fps back to
>>>>>> 2-3 :)
>>>>>>
>>>>>> Encoding at ultrafast preset was 4.5 fps for 4k version and 12 fps for
>>>>>> FullHD version.
>>>>>>
>>>>>> Filesizes:
>>>>>>
>>>>>> du -h *.mxf
>>>>>> 1.0G    output-half.mxf
>>>>>> 2.2G    output.mxf
>>>>>>
>>>>>> this is just for
>>>>>> frame= 1149
>>>>>> time=00:00:19.15
>>>>>>
>>>>>> Well, I guess without some serious GPU upgrade  this machine not gonna
>>>>>> play HDR 4k :)
>>>>>>
>>>>>> Regular 8 bit/SDR 4k somewhat plays in firefox (if file just av1, 24
>>>>>> fps), at least on Linux where I can set GPU frequency a bit higher
>>>>>> than default on nouveau/libre drivers.
>>>>>>
>>>>>
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