![]() Adapter lets you easily trim the duration of any audio or video files and easily export it to the format of your choosing. ffmpeg -i my-sample.mkv -r 10 out.gif With -r 10, my sample video file got 20 smaller. In such a case, its better to use -r option to specify frame rate. Well, the file size of out.gif is sometimes a bit too big. # To convert a video to compatible HTML5 video format (mp4): ()įfmpeg -i infile.ext -acodec aac -strict experimental -ac 2 -ab 128k -vcodec libx264 -preset slow -f mp4 -crf 22 outfile.mp4įor f in *.m4a do ffmpeg -i " $f " -acodec libmp3lame -ab 320k " $. Easily compress groups of WAV files to MP3 or transcode your movie collection to work on your iPhone, Android or other device. FFmpeg provides simple usage to convert video such as. Usually we do this conversion in the server using ffmpeg or wrapper over ffmpeg. To overcome this we usually convert GIF to MP4 and play them in loop. # To join/concatenate two mp4 videos (use double-quotes in Windows):įfmpeg -i one.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts one.tsįfmpeg -i two.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts two.tsįfmpeg -i "concat:one.ts|two.ts " -c copy -bsf:a aac_adtstoasc combined.mp4 But the issue with GIFs are they are usually much larger in size compared to their video counterparts. mp4 -codec:video libvpx-vp9 -crf -b:video 0 -codec:audio libopus -vbr on -threads. For the best quality, use a CRF value (recommended range 15-35) and -b:video MUST be 0:įfmpeg -i. # To remux MKV video to MP4 without re-encoding audio or video streams: avi -codec:audio aac -b:audio 128k -codec:video libx264 -crf 23. AAC Audio 128kbit, h264 Video CRF 23:įfmpeg -i. # To trim a video from a given start time mm:ss to an end time mm2:ss2 (omit the -to flag to trim till the end): I'm converting a video to GIF file with ffmpeg: ffmpeg \ -i input.flv \ -ss 00:00:00.000 \ -pixfmt rgb24 \ -r 10 \ -s 320x240 \ -t 00:00:10.000 \ output.gif It works great, but output gif file has a very low quality. # To quickly extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image: ![]() # To combine numbered images (frame_1.jpg, frame_2.jpg, etc) into a video or GIF: Share Improve this answer Follow answered at 18:15 Gyan 33. # To convert frames from a video or GIF into individual numbered images: The standard way to use ffmpeg for GIFs is Generate a palette from the video ffmpeg -y -i file.mp4 -vf palettegen palette.png Then, ffmpeg -y -i file.mp4 -i palette.png -filtercomplex paletteuse -r 10 -s 320x480 file.gif More options documented here. # To extract the sound from a video and save it as MP3:
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