Posted under General
If anyone uses ffmpeg for encoding i wanna know what you all use
i have one made for gifs, using mp4 to make a palette and using both to make a gif, tho it's not recommended for directors
ffmpeg -i input.mp4 -filter_complex "[0:v] palettegen" -y palette.png ffmpeg -i input.mp4 -i palette.png -filter_complex "[0:v][1:v] paletteuse" -y converted.gif
(use "code" with [])
Updated
Whenever i have to convert mp4 to webm, i just use this (seems to work good enough for me without any visible loss of quality)
ffmpeg -i input.mp4 -b:v 0 -crf 30 -pass 1 -an -f webm -y NUL
ffmpeg -i input.mp4 -b:v 0 -crf 30 -pass 2 output.webm
technical-grid said:
Whenever i have to convert mp4 to webm, i just use this (seems to work good enough for me without any visible loss of quality)
for ffmpeg to do webm encoding i use this
ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 16 -b:v 0 -row-mt 1 -pass 1 -an -y -f null NUL ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 16 -b:v 0 -row-mt 1 -pass 2 -b:a 128k -c:a libopus Output.webm
and this one if it has no audio
ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 16 -b:v 0 -row-mt 1 -pass 1 -an -y -f null NUL ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 16 -b:v 0 -row-mt 1 -pass 2 -an Output-no-audio.webm
flowersylveon said:
for ffmpeg to do webm encoding i use this
CRF 16 is very overkill for VP9. It's supposed to allow for higher CRF values compared to H264 without much quality loss, and for H264 somewhere around 18-22 CRF is the norm. So for VP9 you really want to go 24+, especially with multi-pass encoding.
Also try using a proper "preset"
-deadline
- https://trac.ffmpeg.org/wiki/Encode/VP9#DeadlineQuality
Protip, use lossless or professional codecs for all your intermediate files: ProRes, FFV1 and lossless H264 will do. Otherwise you'll lose quality on every re-encode you do before the final one.
ayokeito said:
CRF 16 is very overkill for VP9. It's supposed to allow for higher CRF values compared to H264 without much quality loss, and for H264 somewhere around 18-22 CRF is the norm. So for VP9 you really want to go 24+, especially with multi-pass encoding.Also try using a proper "preset"
-deadline- https://trac.ffmpeg.org/wiki/Encode/VP9#DeadlineQuality
Protip, use lossless or professional codecs for all your intermediate files: ProRes, FFV1 and lossless H264 will do. Otherwise you'll lose quality on every re-encode you do before the final one.
i used to be a uploader for e621 which this is what i used for when uploading video by other artists, it's a decent preset for most cases and never had a problem with it
i wanna point out keyword artists, which sometimes and usually just a few flat colors or even just black and white, so it's not that bad
i only change it if i needed to, or if Mairo were banging at my door for some sort of stupidity either for me going to cause or did cause, i dont think we got along and i was a bit stupid at the time and for me he was just saying magic words
I mean, no harm in uploading files larger than they could be, it's just that CRF16 is not that far from lossless for VP9.
