![]() ![]() To create a poster image at a specific time instead of at the beginning of the video, add -ss parameter with value in seconds ffmpeg -ss 1.4 -i video.mp4 -frames:v 1 video-poster. Here is an example and let us call the list fileList.txt. Then, you need to supply this list to FFmpeg as a commandline parameter. First, you need to create a txt file with the names and paths of all the individual files that you want to concatenate. ffmpeg will also handle image conversion. There are two steps to using this command. The last parameter is the output file name video-poster.png.:v is a Stream specifier to tell ffmpeg that we are working with a video file. -frames:v 1 stops working after the 1st frame (because we need only 1 frame). ![]() This will create a PNG image that has the same width and height of the video file. ffmpeg -i video.mp4 -frames:v 1 video-poster.png Create an MP4 movie from JPEG files with filenames 001.jpg, 002.jpg, etc. It is slower than the stream copy method below, but potentially will output a smaller file size. When the video file finishes loading and starts playing, there will be a smooth transition from the poster image to the video.Ĭreating a poster image from an mp4 file can be done with ffmpeg command line tool. This method uses libx264 to encode H.264 video. I will use the first frame of the video file as a poster image. This gives a hint to the user that there’s some content there. ![]() The poster image will display while the video file is loading. ![]() If you want all of the frames as is then omit the fps filter. If your input has less than 20 fps, then ffmpeg will duplicate frames to convert to 20 fps. I wanted a quick way to create a poster image from a video file (mp4) to use with poster attribute of the element. ffmpeg -i 240video.mp4 -vf 'fps20,scale1920:1080' 240scaled/outd.png If your input has more than 20 fps, then ffmpeg will drop frames to convert to 20 fps. I’m working on a website that has a few short animations in elements on the page. ![]()
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