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

[Andrew Randrianasulu]

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 )....



> 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.
>> --
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>>
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