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rated 0 times [  6] [ 0]  / answers: 1 / hits: 11882  / 2 Years ago, mon, october 3, 2022, 2:26:11

I'm a newbee to ubuntu and need your help: (32bit ubuntu 12.10) my command:



ffmpeg -i ../output_images/particles%04d.png -r 30 -b 30000k final_movie.avi


works for my 800x800 *.png pictures properly, but it doesn't with 512x512 *.png. There I get the following message:



[image2 @ 0x938a100] Could not find codec parameters (Video: png, 512x512)


On the campus-machines it works for both with the same code. I tried doing a resize-command:



for p in *.tga; do convert -resize 800x800 $p $p; done


With this added, it works, but I have and 800x800-movie in the end.






I've already installed the following packages:



Glut:



sudo apt-get install freeglut3-dev


ffmpeg:



sudo apt-get install ffmpeg


There was a "curl command not found" error. I fixed it with:



sudo apt-get install curl


There was another "convert: command not found" and I fixed it with:



sudo apt-get install imagemagick


Any idea what is missing?


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 Answers
3

A misleading situation



First of all, the so-called "ffmpeg" from the Ubuntu repository is not really ffmpeg from the FFmpeg project, but a fake version from a fork. It's a confusing situation. See:





Secondly, this fake "ffmpeg" (and avconv) are terribly buggy. FFmpeg development is very active, and using a recent version of real ffmpeg will most likely resolve this issue.



Getting the real ffmpeg



You have several options:





Each has their advantages and disadvantages as described above.



Using a static build



You just need to download the archive, extract it, and execute the binary. No compiling or installing is necessary:



wget http://ffmpeg.gusari.org/static/32bit/ffmpeg.static.32bit.2013-06-19.tar.gz
tar xzvf ffmpeg.static.32bit.2013-03-19.tar.gz


Now you can use it. You can either navigate to the directory containing ffmpeg, and run (notice the preceding ./):



./ffmpeg -i input ... output


...or provide the full path to it as in:



/home/andy/ffmpeg/ffmpeg -i input ... output


Choose your $PATH



If you want the real ffmpeg whenever you use the ffmpeg command without having to use ./ or having to provide a full path to the binary, then place the ffmpeg binary in the bin directory in your home:



mkdir ~/bin
mv ffmpeg ~/bin
hash -r


Now you can just run ffmpeg and you'll be ready to encode stuff. If you want to use a different directory other than ~/bin, then you will have to add the directory to your $PATH as shown in How to add a directory to my path?



Checking for spies



Now using the ffmpeg command should show something like (note the "FFmpeg developers" phrase):



$ ffmpeg 
ffmpeg version N-54152-g730e07f Copyright (c) 2000-2013 the FFmpeg developers


If it shows the following then you'll know that you are cursed and the fake version is still being used (note the "Libav developers" phrase):



$ ffmpeg
ffmpeg version 0.8.5-6:0.8.5-0ubuntu0.12.10.1, Copyright (c) 2000-2012 the Libav developers

[#32265] Wednesday, October 5, 2022, 2 Years  [reply] [flag answer]
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