jthaa.blogg.se - Ffmpeg png to mp4 high quality

-vcodec libx264 - tells ffmpeg to output to a H.264 compliant file.If your file names are, for example, img0001.jpg, then this would be expressed as img%04d.jpg Change the 9 in %09d.jpg to how many zeroes the names of your image sequence has. -i %09d.jpg - tells ffmpeg to use the images 000000000.jpg to 999999999.jpg as the input.-r 30 - tells ffmpeg to encode at 30 frames (or images) per second (change this to your desired framerate).-f image2 - tells ffmpeg to select a group of images.This will output a lossless H.264 video where frames will use information from other framesįfmpeg -f image2 -r 30 -i %09d.jpg -vcodec libx264 -profile:v high444 -refs 16 -crf 0 -preset ultrafast a.mp4 FFmpeg Wiki: How do I encode single pictures into movies?.

FFmpeg image file demuxer documentation.

In the above examples each associated frame for the input and output share the same hash ensuring that the frames are identical and that the output is lossless. $ ffmpeg -i output.mkv -map 0:v -f framehash.

The framehash muxer can be used to compare the unique hash of each frame to ensure that the result is truly lossless: $ ffmpeg -i input%03d.jpg -f framehash. You can use jpegtran to perform lossless optimization on each frame which may provide significant file size savings: mkdir outputdirįor f in *.jpg do jpegtran -optimize -copy none -perfect -v "$f" > "outputdir/$f" done Note that if you omit -framerate then a default of -framerate 25 will be applied to the input. You can simply mux the JPG images to make a video: ffmpeg -framerate 30 -i input%03d.jpg -codec copy output.mkv