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add more examples to ffmpeg based on examples in ffmpeg site docs

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Henry Vindin 2017-10-24 08:24:54 +11:00 committed by Henry Vindin
parent a7c936e3ec
commit 999df15f7c
1 changed files with 14 additions and 5 deletions
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pages/common/ffmpeg.md
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@ -4,7 +4,7 @@
- Extract the sound from a video and save it as MP3:
`ffmpeg -i {{video.mp4}} {{sound}}.mp3`
`ffmpeg -i {{video.mp4}} -vn -codec:audio {{sound}}.mp3`
- Convert frames from a video or GIF into individual numbered images:
@ -14,10 +14,19 @@
`ffmpeg -i {{frame_%d.jpg}} -f image2 {{video.mpg|video.gif}}`
- Extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image:
- Quickly extract a single frame from a video at time mm:ss and save it as a 128x128 resolution image:
`ffmpeg -i {{video.mp4}} -ss {{mm:ss}} -frames 1 -s {{128x128}} -f image2 {{image.png}}`
`ffmpeg -ss {{mm:ss}} -i {{video.mp4}} -frames 1 -s {{128x128}} -f image2 {{image.png}}`
- Convert AVI video to MP4. AAC Audio @ 128kbit, Video @ 1250Kbit:
- Convert AVI video to MP4. AAC Audio @ 128kbit, h264 Video @ 1250kbit (Gives a predictable file size at lower quality):
`ffmpeg -i {{input_video}}.avi -codec:audio aac -b:audio 128k -codec:video libx264 -b:video 1250K {{output_video}}.mp4`
- Convert AVI video to MP4. AAC Audio @ 128kbit, h264 Video @ CRF 23, Preset of very slow (Good trade off with file size/speed/quality), also allow faststart by moving the MOOV atom to the start of the file after processing:
`ffmpeg -i {{input_video}}.avi -codec:audio aac -b:audio 128k -codec:video libx264 -crf 23 --preset veryslow --movflags +faststart {{output_video}}.mp4`
- Remux MKV video to MP4. No re-encoding of video or audio streams, convert subtitles stream to MP4 compatible codec:
`ffmpeg -i {{inpupt_video}}.mkv -codec:audio copy -codec:video copy -codec:s mov_text --movflags +faststart {{output_video}}.mp4`
`ffmpeg -i {{input_video}}.avi -acodec libfaac -ab 128k -vcodec mpeg4 -b 1250K {{output_video}}.mp4`