[CinCV TNG] Setting up a Project

Phyllis Smith phylsmith2004 at yahoo.com
Sat Dec 31 18:08:12 CET 2016


Igor wrote:"Insertion strategy `Replace ..` in CGG does not work  in accordance with manual
If a user loads video (not XML), CGG changes project attributes (settings in SF) including output size (canvas size)
Your project settings in SF (project size means output size) (in SF window it is called as canvas size) will (automatically) get/have output size same as your input loaded file and your result file from cin will have size of the input file.

CGG's manual  does not describe this behavior..
It says only:
...The default asset is selected and causes the format frame rate and sample rate to match media.
 
 Is it a bug, a glitch ? A feature ?"
Response:
It is a feature which is why it was documented in case of confusion -- but not very well!  I havetried to fix that now and will be updating it on the CV website in a couple of days.  Hopefully, the following expansion in section 40.1 solves the confusion?
Future manual update:
For ffmpeg and mpeg files, when the Insertion strategy methodology in the File→Load files pulldown is chosen to be either “Replace current project” or “Replace current project and concatenate tracks”, the basic session format parameters are reinitialized to match new media. This selects the default asset and determines its width, height, and video length, frame rate, calculates the colormodel, and assumes square pixels to make an intelligent guess about aspect ratio for video. For audio, the sample rate, audio length, and channel count (mono, stereo, or 5.1) are also reinitialized. When using “replace” type insertion strategy, the new asset list is the only media in use. This update saves the user from immediately needing to change the session format to match the only possibility.      From: igor_ubuntu <sitelve at gmail.com>
 To: "cinelerra at lists.cinelerra-cv.org" <cinelerra at lists.cinelerra-cv.org> 
 Sent: Sunday, December 18, 2016 1:32 PM
 Subject: Re: [CinCV TNG] Setting up a Project
   
2016-12-18 2:03 GMT+02:00 Terje J. Hanssen <terje at nordland-teknikk.no>:


"Output size", where and for what?
The reason for this question is that I think it is somewhat confusing what the Project or Format settings really influence.
Loading a file (File > load) into Cinelerra I think of as the "import" or "Input file", and correspondingly rendering as the "export" or
"Output file".  Does Format settings influence one or both of these?


If we very simplify and generalize some things, we can say that оutput size, canvas size in Set Format, match project size in Resources   mean one the same thing => size of your output file.
+ Read  in manual  about track size (it is very important !) 8.2.6 Track and output sizes

+ Insertion strategy plays an important role.

 Cinelerra has a insertion strategy `Replace ..`
 Only this strategy type can change (automatically) project attributes including output size.
 But project attributes are only changed when loading XML. 
 If a user loads video file (not XML), project attributes are not changed. 
It is written in the main manual and all CV* branches and HV work in accordance with manual.

Manual says about the strategy type:
All tracks in the current project are deleted and a set of new tracks are created to match the source file. 
Project attributes are only changed when loading XML. 
If multiple files are selected for loading, Cinelerra adds a set of new tracks for each file. New resources are created in the Resources Window, replacing the current ones. 


Insertion strategy `Replace ..` in CGG does not work  in accordance with manual
If a user loads video (not XML), CGG changes project attributes (settings in SF) including output size (canvas size)
Your project settings in SF (project size means output size) (in SF window it is called as canvas size) will (automatically) get/have output size same as your input loaded file and your result file from cin will have size of the input file.

CGG's manual  does not describe this behavior..
It says only:
...The default asset is selected and causes the format frame rate and sample rate to match media.
 
 Is it a bug, a glitch ? A feature ?
 -------------------

If a user loads video (not XML) in CV*/HV, ones do not  change project attributes (settings in SF) including output size (canvas size)

If you load 1980x1080 input f.  with `Replace ..` for example on empty timeline, but  Project i.e. Format settings (in SF window) have f.examp. 720x576 (from previous project),  you will see in compositor 720* canvas size and your result file from cin will have  720x576 size. 

In the case, if you want to have canvas size = 1980x1080 in compositor and result file 1980x1080, you have to set output size in SF window as 1980x1080. 
You can do it  in SF or in Resources.
Right click on a video asset and selecting *Match project size* can be convenient if your file was loaded in Resources  with `Create new res.. only` and now you want to change canvas size accordingly to the asset before loading it in to timeline to new track.


Cin-CV seems to crash, but Cin-GG 5.1 loads my 1080i HDV.M2T files when
Format settings is near correct. 

I loaded HDV 1080i m2t file from http://mvd.homevideo.free.fr/films_HDV/20081103140154.m2t  in CVO.    http://mvd.homevideo.free.fr/Gallery/ppa0.htmCVO works well with it. http://i.imgur.com/P5rbtnP.png


Tried the Match project size which i.e adjusted the to 4:3 aspect ratio.
Tried both without and with checking the Auto Aspect ration button, but
in both cases the playback in the Compositor or Resource was displayed
with aspect 4:3 and not with 16:9. Should it?
 Did you set Track Size = as Output Size ?
 CGG works well for me. I can easily get both 4:3 and 16:9 with http://mvd.homevideo.free.fr/films_HDV/20081103140154.m2t
4:3 http://i.imgur.com/US0sArt.png
16:9  http://i.imgur.com/457LebR.png



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