How to convert video programmatically using ffmpeg

Question

Most applications of ffmpeg both in terminal and code seem to be passing ffmpeg commands to the ffmpeg library with specific parameters. For example, you might run the following command to get an overlayed gif out of a video input and a png input:

-i i.mp4 -i me.png -filter_complex 'overlay' -pix_fmt yuv420p -c:a copy output.gif

Is it possible to work with the library without using commands and only programmatically? For example, by creating an FFmpeg object, passing it relevant parameters and then reading the output file from a specific directory, preferrably using C++ or Java.

Here is a minimal runnable resize example: https://stackoverflow.com/questions/12831761/how-to-resize-a-picture-using-ffmpegs-sws-scale/36487785#36487785 — Ciro Santilli OurBigBook.com, Jan 02 '19 at 19:07

tyb · Accepted Answer · 2018-04-11T11:53:28.600

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It is possible to use underlying libraries of FFmpeg programmatically (C/C++).

Check following links:

Using libav* - FFmpeg

FFmpeg coding examples

edited Apr 11 '18 at 11:53

answered Mar 05 '18 at 20:08

tyb

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If possible please post the relevant information from the links as links by themselves will be useless if they die. Cheers – d219 Aug 01 '18 at 12:51

score 0 · Answer 2 · answered Mar 07 '18 at 07:34

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Yes, definitely, addition to above answer, also study these on libav (FFmpeg):
AVFrame structure, AVPixelFormat, and libswscale library and it's sws_getContext and sws_scale API calls.

Hope that helps.

answered Mar 07 '18 at 07:34

the kamilz

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How to convert video programmatically using ffmpeg

2 Answers2