New posts

Reply to thread

Message: [QUOTE="AnonymousCookieMonster, post: 17274, member: 3229"] FFMpeg encoding using AV1. Unfortunately for anime i'm seeding most of what i download so i can't change it. BUT! that doesn't mean for storage reasons i won't re-encode. To be explicit here, i download and re-encode my porn. And a 2Gb 40min 1080p video becomes about 300-500Mb, and looks/sounds about the same. yeah i can't play it on my SmartTV because AV1 decoding is too slow ([I]for the moment[/I]). But space saved feels worth it. I think i was getting 200Mb-250Mb for an episode for anime though when i was testing ([I]as compared to 400Mb-1.2Gb[/I]). And SD content, i can probably get down to 50-80Mb. The bulk of the savings is in the keyframes being delayed from 2-3 seconds, to i put about 2000 frames (closer to 20-30 seconds), as that's like half the bandwidth of normally encoded videos. Typical calling, make a batch file and use this (for Linux/Bash replace [B]%1[/B] with [B]"$1"[/B] (yes include the quotes)) [code=bash]ffmpeg -i %1 -vcodec libsvtav1 -vf format=yuv420p10le -scodec copy -map 0:v -map 0:a -strict experimental -acodec aac -q:a 0.85 -preset 5 -crf 35 -svtav1-params lookahead=120:keyint=2000 %1.mp4[/code] If it's 1080 it will use 5Gb ram, so have some free memory set aside. It can also take several times the length of the video, so expect a 20min episode to take 1.5-2 hours. ([I]Note, 8 cores, 8 efficiency cores at 3.5Ghz on my machine... So it may take longer for you[/I]) Tweak the settings, crf 30-32 will be higher quality but be somewhat larger, and preset 5 is a nice middle-ground, if you need it fast make it 8-10 and it won't be as compact, if you don't care about time, change to a 3. Audio, 0.6-0.7 is fine for lectures speech and not so much music. changing the audio to copy may be preferred if you don't want to change that. Start the encoding, put ffmpeg as low priority and just let it eat the idle cycles in the background while you work, you probably won't notice much. You can even put your computer to sleep and have it resume and it should work as long as the file is local and not network, so you don't have to leave the computer on 24/7. Here's an example with pokemon intro. I hope spike doesn't mind i've split into 3 parts; Use VLC to play. [/QUOTE]

Verification

Online statistics

Members online: 157

Guests online: 219

Total visitors: 376

Totals may include hidden visitors.

Forum statistics

Threads: 9,835

Messages: 243,205

Members: 776,908

Latest member: Fidi

Reply to thread

Online statistics

Forum statistics

Advertisers