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Einar Rünkaru | 3 Feb 19:26
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Re: [CinCV] Getting involved in Cinelerra!

On Thu, Feb 2, 2012 at 9:24 PM, Aboubakr Seddik Ouahabi
<ouahabix@...> wrote:
> I checked the Video with the Hue issue, but I got better results than his
> Avidemux, I have an nVidia GTX 550 Ti 1GB, may be the GPU has something to
> do with that, and I'm going to attach a screenshot just so you will tell me,
> whether I should investigate the problem, or get on something else.
>
What video driver do you use? OpenGL?

All plugins have different execution path for different color models.
Also there are different execution paths for OpenGL and non-OpenGL.
The artifacts may depend on it.

If you look at upper right corner of the frame the picture from
cinelerra has visible rectangles, the picture from avidemux these
rectangles are almost invisible. This may be some more general problem
of color handling.

Another problem I remember, is Titler. This creates wrong pixel values
in float color models. Float color value range is 0..1,
titler seems to create 0..255.

Einar
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Aboubakr Seddik Ouahabi | 31 Jan 20:59
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[CinCV] Getting involved in Cinelerra!

Hello,

I want to get involved into the development of Cinelerra, although I haven't done some C coding for ages, because I was working as a web-developer, but I'm a Video Amateur :)

So instead of waiting for LightWorks to come, I think I want to get on the Cinelerra wagon for now; however, I found it hard and may be frustrating to get through all the source code and understand what's doing what, especially when it involves more mathematical algos for the image processing theories, so I'd like to know, if there are any few guidelines to smooth my transition to work on Cinelerra for now?

Also, can I replace the effects' icons with some more acceptable eye-candy ones, because I find the current ones way too ugly?

Thanks for any guides, or tips.

Best Regards,
Aboubakr
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Richard Pickett | 24 Jan 17:15
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[CinCV] Just getting started

Hello all,


I have been using pitivi for several years and I've finally reached my limit with the number of things that just won't work unless you hold your mouth just right.

I use linux and typically record my desktop with a command like this:

ffmpeg -y -f alsa -ac 2 -i pulse -f x11grab -r 25 -s 1354x768 -i :0.0 -vcodec libx264 -vpre lossless_ultrafast -crf 22 -acodec libmp3lame -ar 44100 -ab 126k -threads 3 output_file

I've found the resulting file imports into just about anything, that is until I met Cinelerra. It just won't import.

I tried recording the desktop with cinelerra, but it locks my computer up even though there's plenty of ram and the CPU isn't spiking. When I'm finally able to stop the recording it says it's several thousand frames behind, and that's with about 30 seconds of video.

I found this page that has an example of how to ffmpeg convert video for import into cinelerra:


Here's the ffmpeg command:

ffmpeg -i infile.avi -acodec libfaac -ab 384k -ar 44100 -vcodec libx264 -vpre ultrafast -crf 0.01 -f psp outfile.mp4

It does import the video and a big plus, the sound actually works.

But I've found that the video is not only color-shifted (looks like it's white-washed, except it's with grey), but it's also "slanted" as if it's putting fewer bits across the view screen than the viewscreen has, so it pulls a couple off the next line to fill in the end, all the way down the screen.

I modified the command to get rid of the ultrafast and it got rid of the slant, but I haven't been able to fix the colors:

ffmpeg -i infile.avi -acodec libfaac -ab 384k -ar 44100 -vcodec libx264 -vpre hq -crf 0.01 -f psp outfile.mp4

Suggestions? - Thanks!
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Randolph | 22 Jan 19:06
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[CinCV] As support stops for OSS 11.3

I am planning on upgrading to OSS 11.4. I have 2.1CV. Will this version 
still work or should I upgrade? Which version works in OSS 11.4?

Thanks in advance!
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Michal Fapso | 17 Jan 11:53
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[CinCV] Color correction artifacts

Hi everyone,

when I apply a "Hue saturation" effect in Cinelerra and increase the
saturation, it creates color artifacts. When I increase saturation in
Avidemux, it looks well.

Here is an example. Look at the sky near the sea level. There are blue
artifacts which are not present in the Avidemux case:

Cinelerra: http://www.fit.vutbr.cz/~ifapso/download/cinelerra_hue_artifacts.png
Avidemux: http://www.fit.vutbr.cz/~ifapso/download/avidemux_hue_ok.png

Here is the video (10MB): http://www.fit.vutbr.cz/~ifapso/download/MVI_2230.MOV

And this is the ffmpeg's info about the video stream:
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuv420p, 640x360, 23.98
tbr, 23.98 tbn, 23.98 tbc

It was down-scaled from the original 1920x1080p clip, but also the
original has the same color problems in Cinelerra.

Does anyone experience similar problems? I searched the archive of
this mailing list and didn't find anything related.

Thanks for any hints.
Michal
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Laurent ROCHE | 16 Jan 00:47
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[CinCV] Cinelerra in FR

Hi,

I've installed Cinelerra CV 2.2 on 2PCs with Ubuntu 11.10.
One had the HV 4.3 version that I un-installed and the other not.
I wanted to set up both with French Language (following manual 
instructions): it worked for the one with HV 4.3 and not with the other one.

Any clues how to get Cinelerra on the second one with French language ?

--

-- 
Cheers,
L <at> u
The Computing Froggy
http://computing.travellingfroggy.info
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Robert Lee | 15 Jan 14:27
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[CinCV] ffmpeg settings for smartphone?

hello,

i just recently got a smartphone for christmas and now i wanted to put
some of my videos on it. this tecnology is all new to me and i tried
around with transmageddon and iriveter but none of them does the job
right. now i thought it might be a good idea to try it with ffmpeg but
unfortunately i am not very familiar with it. so i wanted to ask you
guys for some advice in the settings, it's a samsung gio gt s5660.
thanks

LEE
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Michael Wisniewski | 14 Jan 22:21
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[CinCV] Help with Piping Render

Hi!

I'm trying to learn how to proxy edit and following the workflow listed here...

http://renomath.org/video/linux/avchd/

It says that to render, pipe it to his pipe-x264 script.  Whenever I
do this, it fails with a read/write error.  The script is located
here...

http://www.renomath.org/ejolson/video/hddvd/pipe-x264

Does anybody else use this script, and has anybody figured out how to
fix it?  Should I not be using it, and just use the internal mpeg or
ffmpeg ones?

Thanks!
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Laurent ROCHE | 10 Jan 19:17
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[CinCV] Cinelerra 2.2 vs 4.3

Hi,

I am new to Cinelerra.
I've read that the Community Version integrates the changes of the 
Heroine Virtual version.
However considering the version numbers are quite different between both 
version right now, does that still mean that CV 2.2. integrates all the 
changes of HV 4.3 ?
In other terms, are there any  benefits in using HV instead of CV, or 
can I stick to CV ?

--

-- 
Cheers,
L <at> u
The Computing Froggy
http://computing.travellingfroggy.info
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Laurent ROCHE | 10 Jan 03:48
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[CinCV] Cinelerra 2.2 vs 4.3

Hi,

I am new to Cinelerra.
I've read that the Community Version integrates the changes of the 
Heroine Virtual version.
However considering the version numbers are quite different between the 
two at the moment, does that still mean that CV 2.2. integrates all the 
changes of HV 4.3 ?
In other terms, there are no benefits in using HV despite the higher 
version number ?

--

-- 
Cheers,
L <at> u
The Computing Froggy
http://computing.travellingfroggy.info
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Eugene Hughes | 9 Jan 03:05
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[CinCV] Managing Longer Projects in Cinelerra - Workflow

Looking for some input from the intelligentsia on this one. Im looking to see if Cinelerra can manage longer projects like a feature or whatever. If one makes a long project, having all edits for the entire project  ( 60 min or so ) on the timeline would be too risky or bulky I guess. Im thinking that it would be easier putting only one scene at a time on the timeline, then render, then add them together and then render again to finish the project. I thinking doing no more than 2 renders will not hurt the final quality too much.

I have not figured out how to put multiple .xml fles on the same timeline....Am I not aware of how to do that or is it simply not a feature of Cinelerra ?  Is there a better way in Cinelerra to assemble long projects w/o harming quality by several render cycles ?

Thanxx
Eugene

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Gmane