jpg images to video

[xinyiman]

Hi guys, I was wondering if anyone has an example of how to make a video from a series of jpg images. For example I have 100 jpg images and I want them to become a video (assuming that those images were taken with a frequency of 100 milliseconds.
A cross platform procedure would be necessary.
Thanks for your help

[correa.elias]

You can call ffmpeg using TProcess from your pascal program.

[metis]

@xinyiman

You can call ffmpeg using TProcess...

If You need it a bit more detailed, see FFGrab4Laz
-> GoTo: 'RunFFmpeg'.

For how to build the FFmpeg-CommandLine, see the FFmpeg Documentation
-> GoTo: "You can extract images from a video, or create a video from many images"
                 -> "For extracting images from a video" and "For creating a video from many images".

E.g. to extract Images from a Video, and then recreate that Video from those Images,
copy the following CommandLines into the first Line of 'RunFFmpeg' and click [Grab].

Video -> Images:
-i "tmp/Video2Image.avi" -f image2 tmp/frame%03d.jpg

Images -> Video:
-f image2 -framerate 12 -i tmp/frame%03d.jpg "tmp/Image2Video.avi"

'FFmpeg' is cross platform; the SourceCode of 'RunFFmpeg' is currently Windows, but You may extend it with Linux and Mac - it's OpenSource.

[BubikolRamios]

Not to open new topic ....

Code: Pascal  [Select][+][-]

1.      AProcess:= TProcess.Create(nil);
2.      Aprocess.Executable:= AppPath + 'ffmpeg.exe';
3.      Aprocess.Parameters.Add('-i Images1/inputImage%d.bmp');
4.      Aprocess.Parameters.Add('-framerate 1');
5.      Aprocess.Parameters.Add('-c:v libx264');
6.      Aprocess.Parameters.Add('-r 30 output.mp4');
7.      Aprocess.Parameters.Add('-y'); //overwrite output files
8.      AProcess.Execute;
9.      AProcess.Free;    
10.  

Not sure where 'output.mp4' should be, there or somewhere else ?

[TRon]

Not sure where 'output.mp4' should be, there or somewhere else ?

Each option requires its own (individual) addition to the parameter-list of TProcess.

[Zvoni]

Not sure where 'output.mp4' should be, there or somewhere else ?

Each option requires its own (individual) addition to the parameter-list of TProcess.

Yes, and he has the "output.mp4" in his Line 6.

That said: I looked at the ffmpeg-docs, and contrary to the "-i"-Switch, which defines the "Input-URL", there is (seems to be) no "-o"-Switch defining an explicit outputfile (or i haven't found it), so at a guess, ffmpeg treats any (additional?) "filename", that is NOT behind a "-i"-switch as an output-file

[cdbc]

Hi

so at a guess, ffmpeg treats any (additional?) "filename", that is NOT behind a "-i"-switch as an output-file

Yes it does ...and bases it's output format on the extension provided e.g.:
 ffmpeg -i "Lynyrd Skynyrd - Simple Man - Live At The Florida Theatre ⧸ 2015 (Official Video) [Mqfwbf3X8SA].webm" lynyrd-skynyrd.wav

Produces the soundtrack from that music-video...
Regards Benny