October 2022 - Cin - Cinelerra-GG Mailing Lists

Cinelerra HV 8 is out!
by Andrew Randrianasulu 29 Oct '22

29 Oct '22

http://heroinewarrior.com/cinelerra.php "*10/23/22 - Cinelerra 8* GPU accelerated rendering. Faster GPU accelerated playback. Write output to command line ffmpeg." for some reason in small font. Explanation vids https://m.youtube.com/watch?v=IZdJqrObnik&feature=youtu.be

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Layers! (1990 demo)
by Andrew Randrianasulu 29 Oct '22

29 Oct '22

I often vondered how those multiple live videos in moving wall videos were made ... I thought they were done on VERY fast specialized machine. Well, apparently machines were fast and soecialized, but not THAT fast. http://positivelyatlantaga.com/1990/01/07/video-stratigraphy-working-with-m… If I read this piece correctly engineers just ran video between two disks adding layer at a time. So, a lot more labor but still working effect in the end! I looked at compubench 1.5 benchmark (win64, sorry for me) and while some modern cards can composite at 300 fps not so new cards easily can drop down 10x https://compubench.com/result.jsp?benchmark=compu15d&test=588&text-filter=&… and sadly OpenCL in free drivers not advanced enough (I monitor progress there, sadly driver writers not very interested in writing application code too?), and writing FAST OpenCL code is not trivial ... I also noticed interesting difference between how TV was made 'unser time pressure' back in XX century, as opposed to 'graphics art' that was more about conceptualizing and less about painting itself. https://www.provideocoalition.com/growing-pains-the-desktop-video-identity-… Cinelerra was born more as TV tool, and I guess this explains 'weird' one hit hotkeys.

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fileexr/fileppm direct copy support
by Andrew Randrianasulu 29 Oct '22

29 Oct '22

So, I was working on restoring direct copy support for cinelerra-cv and realized I can xcheck Cin-GG too. I think attached two patches make it possible to skip de/encoding for unchaged portions of timeline when working with image lists of exr and ppm types (in addition to png/tiff/tga/jpeg support already there) Please test?

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oops apparently 'subtract' mode is broken!
by Andrew Randrianasulu 28 Oct '22

28 Oct '22

I was trying to repeat tuto at https://linuxvideoediting.blogspot.com/2022/01/transparent-text-effect-in-C… so I loaded video, created empty new vid track, applied 'titles', 'blur' and 'invert video' to _empty track_, then set track's mode to subtract .... result was color inversion of original video on second vid track (

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Cinelerra CV direct copy feature demo
by Andrew Randrianasulu 28 Oct '22

28 Oct '22

Recorded with Cin-GG :-) https://youtu.be/7pXG5cnjckQ 5min or so ....

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random ffmpeg patches on github for jellyfin
by Andrew Randrianasulu 26 Oct '22

26 Oct '22

https://github.com/jellyfin/jellyfin-ffmpeg/tree/jellyfin/debian/patches I guess opencl tonemapping / scaling might be of some interest ....

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random console ffmpeg prog
by Andrew Randrianasulu 24 Oct '22

24 Oct '22

I was looking for this mess of hw encoders on ARM singleborad computers and randomly hit this blog: https://www.willusher.io/general/2020/11/15/hw-accel-encoding-rpi4 so apparently default 'OS' on Pi4 uses v4ĺ2 encoder, should be easy to create profile for (just copy vaapi one and edit ) and as bonus you can find python + ffmpeg encoding manager .... another random project is wayland capture program, might not work on intel due to fb modifiers (?) https://trac.ffmpeg.org/ticket/8542 https://github.com/cyanreg/txproto and all this because adventurious user 'goat' reported he had better luck with cin-gg on arm single-board computer under Wayland/Xwayland - namely timeline scrolling performance.

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IceWM 3.1
by Andrew Randrianasulu 24 Oct '22

24 Oct '22

from phoronix https://www.phoronix.com/news/IceWM-3.1-Released ++++ IceWM 3.1 introduces a new window option "frame" to automatically group application windows with the same "frame" value as tabs within a single frame. ++++ this behavior *may* workaround 'too many windows' complain from cin users.

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cve 2022-2566
by Andrew Randrianasulu 16 Oct '22

16 Oct '22

https://github.com/google/security-research/security/advisories/GHSA-vhxg-9… so I downloaded https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/6f53f0d09ea4c9c7f7354f018a8… and turned it into ffmpeg-5.1.patch6 (attached) from description it sounds quite bad, so if this patch does not regress normal files we better to apply it or may be update whole ffmpeg to 5.1.2 ?

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Test alpha channel and reroute plugin (from Igor Vladimirsky's blog)
by Andrea paz 10 Oct '22

10 Oct '22

I open a new post to better recall the subject; the discussion in the post "CinGG's Youtube channel" is off topic. I tried to repeat Igor Valdimirsky's tutorial; maybe I did something wrong but my result is not good. Already with the default overlay (Normal) the result is not exactly the same as in the tutorial. For example, the outline of the letters is all white while in the tutorial there are plays of light and shadows that make it three-dimensional. But the worst comes when I set the center track to "Multiply": a completely wrong color comes out! See video: https://streamable.com/a7viox One difference is that I used a video source (h264, mov) and not a still image as in the tutorial, but I don't think it makes any difference.

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