[Cin] 4k test videos from Ultravideo (very huge!)

[Andrew Randrianasulu]

On Wednesday, June 16, 2021, mnieuw--- via Cin <cin at lists.cinelerra-gg.org>
wrote:

> I have downloaded this CityAlley file, 3.5GB 7z file.
> Unzipped it is a 15G file with the name
> CityAlley_3840x2160_50fps_10bit.yuv .
>
> Trying to load it in CinGG 2021-05 AppImage does not work, it just
> seems to do nothing. Not even accepted as resource only. If I set the
> format to 368x2160p50 RGBA float, and select the file, load strategy
> "concatenate to existing tracks", then click "apply", a window comes
> saying "... format couldn't be determined, assume raw PCM , and shows
> audio format choices. Which obviously is not correct.
>
> No errors when started in a terminal.
> The "file" command does not seem to know what kind of file it is
> either, it just says "data".
>
> I assume that because it is raw, CinGG (or the "file" cmd) cannot
> determine what file it is. I have not looked into the file header.


yeah, I think autodetection of raw yuv video is one feature of y4m format..

YUV4MPEG2 W352 H144 F25:1 Ip A0:0 C444p16 XYSCSS=444P16 XCOLORRANGE=FULL
FRAME

from y4m header of file I did with my patched cingg/ffmpeg....

try to manually streamconvert this yuv file with ffmpeg?

like ffmpeg - i file.yuv -c:v copy -s 3680x2160 - r 50 -
pix_fmt=yuv444p10le -f yuv4mpegpipe file.y4m

(from memory)



> If the frame format would be known, e.g. is there in spite of raw some
> indication of when a new frame starts, then I presume this could be
> added to CinGG. Otherwise how do you know now many bytes/pixel?
>
> MatN
>
>
>
> On Tue, 15 Jun 2021 10:00:59 -0600
> Phyllis Smith via Cin <cin at lists.cinelerra-gg.org> wrote:
>
> > >
> > > if you have ssd/nvme disk and/or 4 gb of free ram to play this -
> > > you can test)
> > >
> > Oh, man -- I really want to test this !! I have the ram and nvme disk
> > -- I just do not have the time!
> >
> > On Tue, Jun 15, 2021 at 5:24 AM Andrew Randrianasulu via Cin <
> > cin at lists.cinelerra-gg.org> wrote:
> >
> > > i was looking at y4m piping at high bit depth (inspired by latest
> > > x264 patches), and found two interesting links..
> > >
> > >
> > > https://forum.videohelp.com/threads/399289-Need-help-
> converting-RAW-YUV-to-Y4M
> > >
> > > there is claim none of Linux video editors were able to open raw
> > > teststreams.
> > >
> > > link provided in message doesn't work for me, but this one worked
> > >
> > > http://ultravideo.fi/#testsequences
> > >
> > > if you have ssd/nvme disk and/or 4 gb of free ram to play this -
> > > you can test)
> > >
> > > another link is about ffmpeg itself, it has bug in this area in
> > > early 2017, but hopefully it was fixed?
> > >
> > > https://forum.doom9.org/archive/index.php/t-174314.html
> > >
> > > until very lately I was under impression you only can pipe 8-bit
> > > (per channel) video.. but i was wrong? (not tested with cingg yet)
> > >
> > >
> > > --
> > > Cin mailing list
> > > Cin at lists.cinelerra-gg.org
> > > https://lists.cinelerra-gg.org/mailman/listinfo/cin
> > >
>
> --
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>
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