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Old 25 April 2014, 20:43   #38
pandy71
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Join Date: Jun 2010
Location: PL
Posts: 1,528
Quote:
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.


https://support.google.com/youtube/a...1722171?hl=en\

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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