Processing : clean_temp_pre clean_processing multistream.mp4 stills clean_temp Preprocessing : clean_preprocessing project.kdenlive # Für Leute, die ‚make all‘ oder ‚make‘ eingeben #ffmpeg_options_camera_lowq=-vf scale=-1:480 $ ffmpeg -i INPUT.mts -filter:v 'setpts=(1/250)*PTS' -s 1280x720 -c:v libvpx -crf 5 -b:v 8M -an OUTPUT.webm $ ffmpeg -i INPUTFILE.mkv -filter:v 'setpts=(1/250)*PTS' OUTPUTFILE.mkv Or a more practical example using fraction – if original framerate is 25 frames per second I only need evert 250th one: This is the crucial piece of code that needs to be passed to ffmpeg: This adjusts frames’ metadata related to how long each is displayed-exactly what you want. So, supposedly, the right way to change video speed using ffmpeg is by adjusting the “presentation time stamp” (PTS).

Gathering knowledge online with help of two pages: Ffmpeg to the rescue! To do some frame manipulation a video filter “setpts” is what one needs.

So it happened that I forgot to turn on the the function (needs to be turned on everytime you start recording) which usually records one frame every 10 seconds, so I ended up with a “normal” recording and wanted to convert that to what camera usually does. These days I’m recording my work in the studio using a timelapse function in my Panasonic TM700 HD camera.

'įfmpeg -loglevel 16 -i $DIR/tmp/frame%5d.jpg.png $DIR/$SID.$1 $FFMPEG -loglevel 16 -i $i -pred 80 -c:v jpegls $i.jpgls.jpgįfmpeg -loglevel 16 -i $i.jpgls.jpg -c:v png $i.pngĮcho '+++ putting frames back into a movie.

Please define a video'įFMPEG=/home/random/src/ffmpeg/ffmpeg-2.0.7/ffmpegĮcho '+++ extracting all frames as images.'Įcho '-'įfmpeg -loglevel 16 -i $1 $DIR/tmp/frame%5d.jpg # number of input arguments the script was passed.Įcho 'Error.

Ffmpeg extract audio mts