Bug 374739 - Video shrunk and not rendering
Summary: Video shrunk and not rendering
Status: RESOLVED FIXED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Display & Export (show other bugs)
Version: 16.12.0
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-01-08 09:57 UTC by Edward
Modified: 2017-01-13 17:57 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
This is what I see when I load this project. (432.19 KB, image/png)
2017-01-08 09:57 UTC, Edward
Details

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Description Edward 2017-01-08 09:57:58 UTC
Created attachment 103282 [details]
This is what I see when I load this project.

Ok, this is a very strange thing that has happened... Yesterday I was working on a video and all looked ok, but when trying to render it it would immediately say "Rendering finished in 00:00:00" and never produce a file. I tried all manner of formats, even a series of PNG exports, but nothing.

It was anyways late so I decided on shutting it down and maybe starting it fresh tomorrow would solve things. But things seem to only get worse... Now the wide-screen video has gotten an aspect of 4:3 and ended up in the middle of the screen as if I had a 800x600 video in a 720p project. Also, the rendering still refuses to work.

The video clip is from a JVC HD camera that calls the file .MTS and I've had no problems with it in the past.

/Edward
Kdenlive: 16.12.0
MLT: 6.5.0
Comment 1 Edward 2017-01-10 13:56:49 UTC
apt-get shows that kdenlive and melt was upgraded.

Kdenlive: 16.12.1
MLT: 6.5.0

The aspect ratio in the video is back to normal, which is nice, but it still doesn't render. I'm guessing it might be melt. Is kdenlive not finding melt, or is melt refusing to do its job without telling kdenlive what the error is, or could this problem be deeper? (ffmpeg, avconv, avformat, etc)
Comment 2 Jean-Baptiste Mardelle 2017-01-10 14:07:49 UTC
Can you try the render to script feature ? In the render dialog, instead of "Render to file", you have an option to "render to script". This will create a script file, usually in $HOME/Documents/scripts/script001.sh (it will ask you for a path). Then, open a terminal and go in the folder of the file ($HOME/Documents/scripts in that case) and type:
./script001.sh (or any name that you gave in the render dialog).

That might print some more informations about the rendering problem
Comment 3 Edward 2017-01-10 14:41:56 UTC
edward@gigafirm:~/Documents/scripts$ ./00001_001.sh 
//STARTING RENDERING:  false , false , "/usr/bin/melt" , "dv_pal_wide" , "avformat" , "-" , "consumer:" , "/home/edward/kdenlive/qna/00001.mpg" , () , ("qscale=3", "aq=3", "subq=3", "cmp=1", "subcmp=1", "trellis=1", "bf=2", "threads=1", "real_time=-1") , 0 , 1408
edward@gigafirm:~/Documents/scripts$

I hope that is the information you are looking for. To me, it doesn't look verbose enough.
Comment 4 Jean-Baptiste Mardelle 2017-01-10 18:06:53 UTC
Git commit dd17aad744b87cfe6cb22bee7c3e3d86ec72c054 by Jean-Baptiste Mardelle.
Committed on 10/01/2017 at 18:06.
Pushed by mardelle into branch 'Applications/16.12'.

Fix rendering when forcing resize or fps change

M  +7    -2    renderer/kdenlive_render.cpp

https://commits.kde.org/kdenlive/dd17aad744b87cfe6cb22bee7c3e3d86ec72c054
Comment 5 Edward 2017-01-10 21:53:13 UTC
Thanks. Works now. Except that the HD profile MPEG-2 only produces sound, but using VOB works just as well.
Comment 6 Jean-Baptiste Mardelle 2017-01-10 22:51:51 UTC
Thanks a lot for your report & quick feedback. That was really last minute but I managed to get the patch in for the 16.12.1 release due in 2 days, thanks to the release coordinator.