I hope I understand this correctly. You shoot 1080p. You upscale it to 4K. YouTube downscales it to 1080p and I get to watch it in 1080 again. And it might look better.
I don't really think you should do this but wouldn't shooting in actual 4k make more sense. Ersatz 4k seems an even greater waste of bandwidth and rendering effort.
rs20@cave:~/eevblab/1080$ youtube-dl -F q95mfnmMdwA
[youtube] q95mfnmMdwA: Downloading webpage
[youtube] q95mfnmMdwA: Downloading video info webpage
[youtube] q95mfnmMdwA: Extracting video information
[youtube] q95mfnmMdwA: Downloading DASH manifest
[youtube] q95mfnmMdwA: Downloading DASH manifest
[info] Available formats for q95mfnmMdwA:
format code extension resolution note
249 webm audio only DASH audio 51k , opus @ 50k, 1.82MiB
171 webm audio only DASH audio 111k , vorbis@128k (44100Hz), 3.88MiB
250 webm audio only DASH audio 121k , opus @ 70k, 2.58MiB
140 m4a audio only DASH audio 128k , m4a_dash container, aac @128k (44100Hz), 4.55MiB
251 webm audio only DASH audio 231k , opus @160k, 5.06MiB
160 mp4 256x144 DASH video 111k , avc1.42c00c, 15fps, video only, 3.90MiB
278 webm 256x144 DASH video 126k , webm container, vp9, 15fps, video only, 3.50MiB
133 mp4 426x240 DASH video 248k , avc1.4d4015, 30fps, video only, 8.75MiB
242 webm 426x240 DASH video 250k , vp9, 30fps, video only, 6.84MiB
243 webm 640x360 DASH video 434k , vp9, 30fps, video only, 12.68MiB
134 mp4 640x360 DASH video 610k , avc1.4d401e, 30fps, video only, 13.19MiB
244 webm 854x480 DASH video 747k , vp9, 30fps, video only, 22.53MiB
135 mp4 854x480 DASH video 1113k , avc1.4d401f, 30fps, video only, 26.15MiB
247 webm 1280x720 DASH video 1499k , vp9, 30fps, video only, 48.48MiB
136 mp4 1280x720 DASH video 2063k , avc1.4d401f, 30fps, video only, 50.84MiB
248 webm 1920x1080 DASH video 2616k , vp9, 30fps, video only, 87.20MiB
137 mp4 1920x1080 DASH video 4322k , avc1.640028, 30fps, video only, 115.83MiB
17 3gp 176x144 small , mp4a.40.2, mp4v.20.3
36 3gp 320x240 small , mp4a.40.2, mp4v.20.3
5 flv 400x240 small
43 webm 640x360 medium , vorbis, vp8.0
18 mp4 640x360 medium , mp4a.40.2, avc1.42001E
22 mp4 1280x720 hd720 , mp4a.40.2, avc1.64001F (best)
rs20@cave:~/eevblab/1080$ youtube-dl -F 4SqryR3-8uE
[youtube] 4SqryR3-8uE: Downloading webpage
[youtube] 4SqryR3-8uE: Downloading video info webpage
[youtube] 4SqryR3-8uE: Extracting video information
[youtube] 4SqryR3-8uE: Downloading DASH manifest
[youtube] 4SqryR3-8uE: Downloading DASH manifest
[info] Available formats for 4SqryR3-8uE:
format code extension resolution note
249 webm audio only DASH audio 51k , opus @ 50k, 1.82MiB
171 webm audio only DASH audio 111k , vorbis@128k (44100Hz), 3.88MiB
250 webm audio only DASH audio 123k , opus @ 70k, 2.58MiB
140 m4a audio only DASH audio 128k , m4a_dash container, aac @128k (44100Hz), 4.55MiB
251 webm audio only DASH audio 237k , opus @160k, 5.06MiB
160 mp4 256x144 DASH video 111k , avc1.42c00c, 15fps, video only, 3.90MiB
278 webm 256x144 DASH video 135k , webm container, vp9, 15fps, video only, 3.50MiB
133 mp4 426x240 DASH video 249k , avc1.4d4015, 30fps, video only, 8.75MiB
242 webm 426x240 DASH video 251k , vp9, 30fps, video only, 6.89MiB
243 webm 640x360 DASH video 439k , vp9, 30fps, video only, 12.75MiB
134 mp4 640x360 DASH video 610k , avc1.4d401e, 30fps, video only, 13.27MiB
244 webm 854x480 DASH video 738k , vp9, 30fps, video only, 22.37MiB
135 mp4 854x480 DASH video 1110k , avc1.4d401f, 30fps, video only, 26.18MiB
247 webm 1280x720 DASH video 1506k , vp9, 30fps, video only, 47.10MiB
136 mp4 1280x720 DASH video 2043k , avc1.4d401f, 30fps, video only, 49.84MiB
248 webm 1920x1080 DASH video 2533k , vp9, 30fps, video only, 86.41MiB
137 mp4 1920x1080 DASH video 4318k , avc1.640028, 30fps, video only, 103.23MiB
271 webm 2560x1440 DASH video 8050k , vp9, 30fps, video only, 224.87MiB
264 mp4 2560x1440 DASH video 8739k , avc1.640032, 30fps, video only, 239.34MiB
313 webm 3840x2160 DASH video 19787k , vp9, 30fps, video only, 660.01MiB
266 mp4 3840x2160 DASH video 22117k , h264, 30fps, video only, 695.09MiB
17 3gp 176x144 small , mp4a.40.2, mp4v.20.3
36 3gp 320x240 small , mp4a.40.2, mp4v.20.3
5 flv 400x240 small
43 webm 640x360 medium , vorbis, vp8.0
18 mp4 640x360 medium , mp4a.40.2, avc1.42001E
22 mp4 1280x720 hd720 , mp4a.40.2, avc1.64001F (best)
I hope I understand this correctly. You shoot 1080p. You upscale it to 4K. YouTube downscales it to 1080p and I get to watch it in 1080 again. And it might look better.
YouTube downscales it to 1080p and I get to watch it in 1080 again.
I haven't even looked at the videos, I don't trust experiments like this unless they're double blind! However, I used youtube-dl to list the video formats and actual video data sizes of the two videos, and you can see that the 1080p version of the 4K upload is actually a smaller file (86.4 MiB / 103.23 MiB*) than the straight 1080p upload (87.20 MiB / 115.83 MiB). So the idea that the 4K uploads get a special, higher bitrate seems false.
What. Perform two extra conversations on a lossy file format and expect better quality. Smells like a Batteriser...
So if I did the comparison right, IMHO the 4K upscaled version looks better.. but also a bit silly that youtube works this way.
In the end, the massive increase in transcoding time at my end meant that I really didn't consider it worthwhile doing longer term for now.
I did a couple of native 4k videos on Youtube a few months ago to see how it worked out.
In the end, the massive increase in transcoding time at my end meant that I really didn't consider it worthwhile doing longer term for now. In addition, I only have facilities for 25 fps at 4k, I don't know if Youtube can cope with 50 or 60 fps on 4k: 1080p at 50 or 60 fps seemed a reasonable enough compromise.
Is there a single low quality conversion in place that Dave is seeking to improve upon? Wouldn't Dave be better off just doing a single high quality conversion? If he is not doing that already.
The AVCHD compression is going to destroy any real difference. The colour depth and shadow detail is lacking, and the lighting doesn't help. Quite frankly it would be better to stop worrying about 4K when you're not able to fully exploit 1080P anyway.
I don't know what Coppice is talking about above. Both videos are 1080p via YouTube, so the idea only one needs manipulation is nonsense.
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Interesting... I don't get a 4K option on either video.
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