EUMETSAT maji peknou animaci pocasi ve 4K,
kterou zverejnili na YT.
https://www.youtube.com/watch?v=DAW-GpnJIgEUvedene video jsem si stahl ve kodeku 625 a 140
yt-dlp -f 625+140 DAW-GpnJIgE
(625 ma nejvyssi video bitrate)
140 m4a audio only 2 │ 4.71MiB 129k https │ audio only mp4a.40.2 129k 44k medium, m4a_dash
625 mp4 3840x1920 30 │ ~556.09MiB 15294k m3u8 │ vp09.00.50.08 15294k video only
a chtel bych to video dostat z VP9 do HEVC,
jelikos ten VP9 kodek nefunguje na starsich zarizenich,
ale pri konverzi na HEVC je ta ztrata kvality videt .. na 4K monitoru
z 493.5M je vysledne video v HEVC 92.1M
(Original VP9 video ma
Bit rate : 13.4 Mb/s
a vysledne HEVC video
Bit rate : 2 371 kb/s)
Napada nekoho jak to z toho VP9 dostat do HEVC
aniz by FFMpeg snizil bitrate toho videa?
ffmpeg -hide_banner \
-y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda \
-i Global.weather.2024-April-June.f625+140.[DAW-GpnJIgE].mp4 \
-strict experimental \
-map 0:0 -map 0:1 -map 0:2 \
-c:V:0 hevc_nvenc \
-c:v:1 copy \
-c:a copy \
-c:s copy \
-c:d copy \
-map_metadata 0 \
-f mp4 -movflags +faststart \
-ignore_unknown -copy_unknown \
Global.weather.2024-April-June.HEVC+140.[DAW-GpnJIgE].mp4 -v verbose