January 2023 - Cin - Cinelerra-GG Mailing Lists

executable stacks are bad...m-kay?
by Rob Prowel 02 Feb '23

02 Feb '23

Thought this went away in my Jan-2023 git pull, but apparently not. Looked in my dmesg output and saw this again. process 'sharebin/cingg2301/bin/cin' started with executable stack Why? A consequence of the plug-in system? a poorly designed 3rdparty library? an oversight? stack segments are generally marked as no-exec to protect against using them to execute rogue instructions by saving those instructions in auto-vars on the stack that could be executed by fudging the return address of a function. Just looking for an acknowledgement of this, and any relevant related history at this point.

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libtiff 4.4.0 fix?
by Andrew Randrianasulu 02 Feb '23

02 Feb '23

For some reason libtiff was erroring out for me on first build for both debian 11 and ubuntu 16.04 I think this patch to libtiff itself fixes it, but then it was working if I remove libwebp and rebuild it .... strange, strange.

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Rendering 57min of material takes over 12 hours
by Stefan de Konink 31 Jan '23

31 Jan '23

Hi, I am currently trying to render a feature which is 57min in duration. I noticed that cinelerra in this project has an enormous problem rendering two video's stacked on top of eachother. There is (as far as I am aware of) no compositing intended, no projector movement, top track should have priority over lower tracks. Even the compositing window is unable to achieve any smooth framerate on these pieces, unless I disable either ones of the track. The framerate achieved is less than 1 fps. Even when all plugins are disabled, it looks like there is some composition in running. When I manually mute all sections where there is a B-roll, performance is regained. Could someone try this with some D3200 content stacked on top of eachother? If it would help I am happy to create some projects 'as bugs' for QA-purposes. -- Stefan

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GLSL math library
by Andrew Randrianasulu 31 Jan '23

31 Jan '23

Was looking in my termux packages to see if I can enable vulkan filters in ffmpeg (not yet), but found this library https://github.com/g-truc/glm ==== OpenGL Mathematics <http://glm.g-truc.net/> (*GLM*) is a header only C++ mathematics library for graphics software based on the OpenGL Shading Language (GLSL) specifications <https://www.opengl.org/registry/doc/GLSLangSpec.4.50.diff.pdf>. *GLM* provides classes and functions designed and implemented with the same naming conventions and functionality than *GLSL* so that anyone who knows *GLSL*, can use *GLM* as well in C++. === might be useful for someone ... vulkan filters in ffmpeg need some glsl and shader-related packages not in termux yet https://bugs.gentoo.org/750260 Vulkan video (decode) seems to be existing in some unreleased branches https://themaister.net/blog/2023/01/05/vulkan-video-shenanigans-ffmpeg-radv…

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Git tag for release?
by Andrew Randrianasulu 31 Jan '23

31 Jan '23

I see version was bumped, so if it was our real real release we better to add git tag to it like it was done for quite some time. Phyllis, sorry for phenomenal distraction yesterday - I was looking for quickly check on how my build fixes actually build and found rabbit hole of Makefiles and slightly different behaviors!

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Problems with the forum
by Andrea paz 30 Jan '23

30 Jan '23

I can't reply to Jin's post on the forum. When loading the thread, the hourglass appears with a Spanish writing ("Trabajando"); then when I go into the thread page it seems that I am no longer logged in and so it does not allow me to respond. Returning to the home page I find myself still logged in. I think there is still the problem with the translations plugin. @Phyllis: I put my answer here for Jin if you want to post it for me. There is also a note to change some names in Preferences --> performance I too, like fary54, think that what you need is the Src Only (Slip) trim. (@Phyllis: Perhaps there is confusion with the wording "Button 1-2-3." Perhaps it is better to replace it with LMB; RMB and MMB which stands for Left-Right-Middle Mouse Button) @Jin: I am not familiar with Kdenlive, and in your video (gap.mp4) I cannot interpret the havana color clip. The canvas, and therefore the gap, is blue; the previous and subsequent clips are black; the havana space is what? When you do trim on the edges of the two new black clips resulting from the cut (scissor) the havana spaces at the edges shrink. I don't understand what they represent...

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Timecode prominent in compositor
by Stefan de Konink 30 Jan '23

30 Jan '23

Is there a reason why there is no timecode (with respect to the project) in the compositor of Cinelerra present? Especially while rendering this would bring some serious advantages while reviewing the content. I would place it in the right bottom corner. -- Stefan

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ltcvideosplit
by Andrew Randrianasulu 30 Jan '23

30 Jan '23

Not exactly as requested, but might be of some use? https://github.com/gisogrimm/ltcvideosplit

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Tool for timelinging and multitrack exports
by Stefan de Konink 29 Jan '23

29 Jan '23

Hi, I think this scenario has passed by on the mailinglist before, and I might because of how I work, be more attracted to these kinds of problems than others that mainly do non-linear work. After the recording, and after getting the main production idea, my projects are timewise mostly influenced by reconstruction of a multi track linear timeline. I am using multiple camera's that don't use any (world) timecodes, and have 2GB limitations. So the best thing they can do is giving me a relative timestamp by means the filename or creation_time metadata. What I would be interested in is the ability to: 0. having a forever scrolling canvas, canvas may do tricks like hiding places where no content is available 1. "automatically" construct such timeline each track(group) being from a single device, which typically atomically can only produce a single stream of content by means of metadata 2. having some tooling that can do macro alignment, independent of metadata (for example by audio fingerprinting) 3. having some tooling that can do micro alignment 4. export this in either some EDL format or multitrack format being NLE independent I wonder what other people are using for the above, other than pen and paper. >From my own experience within Cinerella (I know about mixers) I don't end up with the workflow that I want for non-continious recordings. A second email follows on a different workflow issue. -- Stefan

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two more patches
by Andrew Randrianasulu 28 Jan '23

28 Jan '23

One alter bsd.bld for telling configure to use clang (on freebsd), so build spew less warnings there. Second patch raises libvpx limit for internal ffmpeg, so you can test it on monster machine (do not forgot to alter vp9 profile a bit so it will try to use more threads)

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