ffmpeg python to create frames from video

-crf is the quality, lower means better quality, 15-25 is usually good.If no padding is needed use something similar to pic%d.png or %d.png.

Where the %04d means that zeros will be padded until the length of the string is 4 i.e 0001… 0020… 0030… 2000 and so on. etc) use the following command: ffmpeg -r 60 -f image2 -s 1920x1080 -i pic%04d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p test.mp4 To take a list of images that are padded with zeros ( pic0001.png, pic0002.png…. I have noticed that different versions of ffmpeg will produce different output file sizes, so your mileage may vary. When using ffmpeg to compress a video, I recommend using the libx264 codec, from experience it has given me excellent quality for small video sizes. Original, Updated : cleanup and information about overlaying images. Note – you must specify the -framerate as the first argument of the FFmpeg command or it will not work.Using ffmpeg to convert a set of images into a video Typically for slideshows, you will want a slow framerate of maybe 0.1fps.įfmpeg -framerate 0.1 -i %d.jpg output.mp4 You can reduce or increase this value using the -framerate flag. This is because the default framerate for FFmpeg is 25fps. You will notice that the image sequence in your output video moves super fast. Replace 720 with the height in pixels that the video should be.

If you get an error saying height not divisible by 2, scale the output like this to fix the problem: You can tell FFmpeg to start counting at a number other than 0 using the -start_number flag like this:įfmpeg -start_number 3 -i %d.jpg output.mp4 The default behaviour of FFmpeg is to start at 0 and continue counting up until no more files are found when it is given a placeholder number. In the FFmpeg command, specify the input file as %d.jpg followed by the name of the output file. Now move to the image-sequence directory in the terminal:

Ffmpeg python to create frames from video