Libav is dead Last commit was on 2019-08-21. Use FFmpeg. Confusing messages The messages mentioned in the question are rather misleading and understandably a source of confusion. The fork was basically a non-amicable result of conflicting personalities and development styles within the FFmpeg community. The real ffmpeg vs the fake one For a while both … Read more
See the Create a video slideshow from images – FFmpeg If your video does not show the frames correctly If you encounter problems, such as the first image is skipped or only shows for one frame, then use the fps video filter instead of -r for the output framerate ffmpeg -r 1/5 -i img%03d.png -c:v … Read more
Since I’m assuming your inputs are going to be arbitrary I recommend using the concat filter instead of the concat demuxer because you’re going to need to perform filtering anyway to conform everything into a common set of parameters and you can do everything in one command. Make all videos 1280×720, 1:1 SAR, 30 fps, … Read more
Use the vstack (vertical), hstack (horizontal), or xstack (custom layout) filters. It is easier and faster than other methods. Combine/stack two videos or images Vertical Using the vstack filter. ffmpeg -i input0 -i input1 -filter_complex vstack=inputs=2 output Videos must have the same width. Horizontal Using the hstack filter. ffmpeg -i input0 -i input1 -filter_complex hstack=inputs=2 … Read more
Most YouTube video use adaptive bit rate (ABR) format streaming which means that there is not just a single bit rate. For ABR multiple bit rate versions of the video are created and each one is broken down into equal length (by time) chunks – e.g. 10 second chunks. The client player is then able … Read more
For Linux and macOS this can be done in one line, using parameter expansion to change the filename extension of the output file: for i in *.avi; do ffmpeg -i “$i” “${i%.*}.mp4”; done
Here are the steps I went through in getting ffmpeg to work on Android: Build static libraries of ffmpeg for Android. This was achieved by building olvaffe’s ffmpeg android port (libffmpeg) using the Android Build System. Simply place the sources under /external and make away. You’ll need to extract bionic(libc) and zlib(libz) from the Android … Read more
FFmpeg has three concatenation methods: 1. concat video filter Use this method if your inputs do not have the same parameters (width, height, etc), or are not the same formats/codecs, or if you want to perform any filtering. Note that this method performs a re-encode of all inputs. If you want to avoid the re-encode, … Read more