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 <[email protected]> ha scritto: > > > вт, 29 апр. 2025 г., 00:54 Phyllis Smith <[email protected]>: > >> 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 < >> [email protected]> wrote: >> >>> >>> >>> сб, 26 апр. 2025 г., 01:04 Phyllis Smith <[email protected]>: >>> >>>> 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 < >>>> [email protected]> 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 < >>>>> [email protected]>: >>>>> >>>>>> 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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