[Cin] I tried to add AVC-Intra 100 output profiles

[Andrew Randrianasulu]

вт, 6 мая 2025 г., 23:15 Andrew Randrianasulu <randrianasulu at gmail.com>:

>
>
> вт, 6 мая 2025 г., 23:10 Phyllis Smith via Cin <cin at lists.cinelerra-gg.org
> >:
>
>> Although the attached render file AVC_Intra_100.mp4 was checked in awhile
>> ago, I have NOT been able to get AVC_Intra_100.mov to work on Fedora 32.
>> Error I get is:
>>
>>> [libx264 @ 0x7f9b9c0b1040]  8-bit AVC-Intra is not widely compatible
>>> [libx264 @ 0x7f9b9c0b1040] 10-bit x264 is required to encode AVC-Intra
>>> FFMPEG::open_encoder  err: Generic error in an external library
>>> int FFMPEG::open_encoder(const char*, const char*):
>>> open failed libx264:/tmp/hdrnmm.mov
>>>
>> If I delete the input line of "avcintra-class=100" which is perfectly
>> legal per "view" it works, but then there is no point!
>>
>
> I think our ffmpeg accidently get headers from system's x264, probably
> compiled without 10bit support?  (this is strange, but Fedora! they cut
> codec support due to *patent* reasons because they operate in USA)
>
> try to remove x264-devel from system and recompile cingg?
>
> Or just check that Pixels set to yuv422p10le .... (may he i missed _that_
> back in time )....
>


oh, I tried it on Termux and it was failing to set Pixels, so I discovered
it had Windows line ends (^M in midnight commander's mcedit).

I deleted those and now profile works!

Attaching anew ..




>
>
>> On Fri, Mar 20, 2020 at 3:11 PM Andrew Randrianasulu <
>> randrianasulu at gmail.com> wrote:
>>
>>> But not sure if I did this correctly.
>>>
>>> https://en.wikipedia.org/wiki/AVC-Intra
>>> says for AVC-Intra 100:
>>>
>>> AVC-Intra 100:
>>> nominally 100 Mbit/s, size of each frame is fixed
>>> CAVLC entropy coding only.
>>> All formats are High 4:2:2 Intra Profile, Level 4.1
>>> 4:2:2 chrominance sampling
>>> frames are not scaled
>>>
>>> and yeah, this French-language pdf actually says the same:
>>>
>>> https://web.archive.org/web/20110720215759/http://www.ficam.fr/upload/documents/AVCIntra.pdf
>>>
>>>                         50M                           100M
>>> Standard                     MPEG-4 part10 AVC/H.264
>>> Profile             High 10 Intra                 High 4:2:2 Intra
>>> Level               Level 3.2/4.0                    Level 4.1
>>> Resolution       1440x1080 / 960x720           1920x1080 / 1280x720
>>> Sampling                4:2:0                          4:2:2
>>> Bit rate               54Mbps                        111Mbps
>>> Block size                         Y: 8x8, C: 4x4
>>> Intra Prediction                Y: 9mode, C: 4mode
>>> MBAFF                                   Yes
>>> De-block filter                         No
>>> Slice/frame                             10
>>> Entropy coding        CABAC                          CAVLC
>>>
>>> so, I looked up ffmpeg cmd line
>>> https://trac.ffmpeg.org/ticket/3597
>>>
>>> ffmpeg -v info -i /mnt-data/backup4/vol0/export/CUHK\ 2014-1/V017b.mov
>>> -vcodec libx264 -intra -pix_fmt yuv422p10le -vb 100M -x264opts
>>> avcintra-class=100
>>> -x264opts colorprim=bt709 -x264opts transfer=bt709 -x264opts
>>> colormatrix=bt709
>>> -threads 4 -acodec copy V017b-ffmpeg-git-avcintra100.mov
>>>
>>> Huh, said I and entered those params in opts file, actually in two files
>>> (mp4 and mov containers)
>>>
>>> mov libx264
>>> cin_pix_fmt=yuv422p10le
>>> flags -global_header
>>> keyint_min=0
>>> x264-params=keyint=0:colorprim=bt709:transfer=bt709:colormatrix=bt709
>>> avcintra-class=100
>>> bufsize=100000000
>>> level=4.1
>>>
>>> mp4 libx264
>>> cin_pix_fmt=yuv422p10le
>>> flags -global_header
>>> keyint_min=0
>>> x264-params=keyint=0:colorprim=bt709:transfer=bt709:colormatrix=bt709
>>> avcintra-class=100
>>> bufsize=100000000
>>> level=4.1
>>>
>>> both for progressive content, for interlace you must add some more flags:
>>> https://lists.ffmpeg.org/pipermail/ffmpeg-user/2017-January/035049.html
>>>
>>> -flags +ildct+ilme
>>> -x264opts interlaced=1
>>>
>>> Also, there is still lack of (GUI) user notification if file writing
>>> failed due to
>>> NO SPACE on device :}
>>>
>>> FFStream::write_packet: write packet failed.
>>> file:/dev/shm/avci_new.mp4
>>>   err: На устройстве не осталось свободного места
>>> FFStream::encode_frame: encode failed.
>>> file: /dev/shm/avci_new.mp4
>>>   err: На устройстве не осталось свободного места
>>> FFStream::flush failed
>>> :file:/dev/shm/avci_new.mp4
>>>   err: Операция не позволена
>>> Render::render_single: Session finished.
>>> ** rendered 273 frames in 85.585 secs, 3.190 fps
>>> Render::render_single: Session finished.
>>> ** rendered 273 frames in 85.485 secs, 3.194 fps
>>> Render::render_single: Session finished.
>>> ** rendered 273 frames in 82.176 secs, 3.322 fps
>>>
>>> Profile sort of assumes you set project to some supported resolution,
>>> framerate, etc,
>>> otherwise libx264 will fail with console error message.....
>>>
>>> I found some talk about AVC-Ultra, there even was patch for x264, but it
>>> was not merged:
>>>
>>> https://mailman.videolan.org/pipermail/x264-devel/2015-September/011412.html
>>>
>>>
>>> Also, I think sound must be uncompressed, but I'm not sure.
>>> --
>>> Cin mailing list
>>> Cin at lists.cinelerra-gg.org
>>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>>>
>> --
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>> Cin at lists.cinelerra-gg.org
>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
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>
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