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  • How do I set up and use FFmpeg in Windows?
    To update FFmpeg, just revisit the download page in step 1 above and download the zip file Unpack the files and copy them over the old files in the folder you created in step 2 Using FFmpeg Using FFmpeg requires that you open a command prompt window, then type FFmpeg specific commands Here is a typical FFmpeg command:
  • video - Where can I learn ffmpeg? - Stack Overflow
    #ffmpeg IRC channel on Freenode; ffmpeg-user mailing list for help using the command-line tools (ffmpeg, ffprobe, ffplay) libav-user mailing list for help using the libraries (libavcodec, libavformat, etc) Development See FFmpeg Developer Documentation, hang out in the #ffmpeg-devel IRC channel, and subscribe to the ffmpeg-devel mailing list
  • Vertically or horizontally stack (mosaic) several videos using ffmpeg . . .
    ffmpeg -i input0 -i input1 -filter_complex vstack=inputs=2 output Videos must have the same width Horizontal Using the hstack filter ffmpeg -i input0 -i input1 -filter_complex hstack=inputs=2 output Videos must have the same height With a border Using the pad filter This examples creates a 5px black border between the two sides
  • How to stream with ffmpeg via http protocol - Stack Overflow
    To have FFmpeg act as an HTTP server, you need to pass the -listen 1 option Additionally, -f mp4 will result in a non-fragmented MP4, which is not suitable for streaming You can get a fragmented MP4 with -movflags frag_keyframe+empty_moov
  • FFmpeg: high quality animated GIF? - Stack Overflow
    ffmpeg -i video mp4 -f yuv4mpegpipe - | gifski -o clip gif - It generates good per-frame palettes, but also combines palettes across frames, achieving even thousands of colors per frame If you want to reduce the video dimensions, add a scaling filter (or --width in gifski):
  • Fastest way to extract frames using ffmpeg? - Stack Overflow
    time ffmpeg -i input mp4 -filter:v fps=fps=1 60 ffmpeg_%0d bmp 1m36 029s This takes long because ffmpeg parses the entire video file to get the desired frames
  • How can I extract audio from video with ffmpeg? - Stack Overflow
    ffmpeg -i sample avi -q:a 0 -map a sample mp3 If you want to extract a portion of audio from a video use the -ss option to specify the starting timestamp, and the -t option to specify the encoding duration, eg from 3 minutes and 5 seconds in for 45 seconds: ffmpeg -i sample avi -ss 00:03:05 -t 00:00:45 0 -q:a 0 -map a sample mp3
  • Convert a video to MP4 (H. 264 AAC) with ffmpeg - Stack Overflow
    First install ffmpeg - I used brew install ffmpeg Obviously you need brew installed first, google that bit Next I wrote a simple command line script with the following content - you can substitute the $1 for an input output file or just create a shell script file vi convert sh Paste
  • FFmpeg - Change resolution of the video with aspect ratio
    If I will run ffmpeg with -s 100x200, then second video will have bad aspect ratio How can I limit output video by width, with auto aspect ratio by height? For example, I want specify for the output video only width 100px and ffmpeg must automatically calculate height with right aspect ratio
  • Cutting multimedia files based on start and end time using ffmpeg
    ffmpeg -i movie mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut mp4 When re-encoding you may also wish to include additional quality-related options or a particular AAC encoder For details, see ffmpeg's x264 Encoding Guide for video and AAC Encoding Guide for audio Also, the -t option specifies a duration, not an end time The above command will





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