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): # 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: # To convert frames from a video or GIF into individual numbered images: # To extract the sound from a video and save it as MP3:
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