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Old 25 April 2014, 21:43   #38
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Join Date: Jun 2010
Location: PL
Posts: 1,619
Originally Posted by s2325 View Post
My files after uploading to youtube have lower resolution and quality. I'm not using some exotic codec, it's Xvid.
Encode uploads as HD (1080) - or at least 720p - YT anyway recode files thus your upload can be encoded as H.264 with fast or very fast preset (x264) to save encode time.\

as a principle, all vides need to be deinterlaced (progressive as google deosn't do deinterlace and recode everything as interlace - this with resize create nasty pattern on video ) - Amiga can produce both types of video thus only one safe capture mode is 50/60fps full resolution (such as 736x568 for PAL, twice H res for SHires) - a bit overkill but... unavoidable as Amiga screen can have multiple resolution and different framerates and frame update speed.
btw you can cosnsider to upsacle video from Amiga even to 2160p: 3840x2160 or 1440p: 2560x1440 - sounds weird but this only way to obey google limitations (increase resolution by modulo 2 - remain area pad to fill resolution).
There is no need to loose time on encode quality.

ffmpeg -i input -c:v libx264 -preset ultrafast -crf 18 -strict experimental -c:a aac -b:a 384k -ac 2 -shortest -movflags faststart -pix_fmt yuv420p output.mp4
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