SceneCity needs your HQ demo captures! (And this will affect the demoscene)
category: general [glöplog]
SceneCity is in progress of adding VoD services to the system in a couple of weeks, too. So in addition of doing party live streams, there also will be demo captures, demoparty seminar & concerts recordings etc. in an upcoming YouTube-like environment. Just as with we have done with SceneCity livestreaming and chat, that SceneCity-Tube feature will be designed without using ANY external resources. No tracking, no ads, no CDC usage, no cloud, but very bare metal in a locked cabinet in a guarded datacenter.
Anyway:
For the SceneCity tube, we are looking for HIGH-QUALITY demo captures. This means captures that do not have any visual encoding artifacts. For "normal" FullHD demos the absolute minimum acceptable bitrate is 5mbit/s h.264. The end format stored on our servers will be h.265 (hevc) with 10 mbit/s and 160 kbit/s AAC audio. Should you be willing to do new recordings, you can directly capture into that format, which saves one transcoding step from our side. If you can only do h.264 then please encode with 20 Mbit/s, it will be converted by us to h.265 later. As containers we can accept mp4, webm and mkv.
For every capture we'll need a list consisting of the pouet production-id and the filenames. All other information will be fetched by our system from the pouet API.
If you are able and willing to help, please contact me at https://scenecity.chat - and/or drop me a line here. Upload space can be provided.
Together let's make sure your grand kids will be able to watch scene history without wondering about why in the first half of the century people found shitty encoding artifacts acceptable.
Anyway:
For the SceneCity tube, we are looking for HIGH-QUALITY demo captures. This means captures that do not have any visual encoding artifacts. For "normal" FullHD demos the absolute minimum acceptable bitrate is 5mbit/s h.264. The end format stored on our servers will be h.265 (hevc) with 10 mbit/s and 160 kbit/s AAC audio. Should you be willing to do new recordings, you can directly capture into that format, which saves one transcoding step from our side. If you can only do h.264 then please encode with 20 Mbit/s, it will be converted by us to h.265 later. As containers we can accept mp4, webm and mkv.
For every capture we'll need a list consisting of the pouet production-id and the filenames. All other information will be fetched by our system from the pouet API.
If you are able and willing to help, please contact me at https://scenecity.chat - and/or drop me a line here. Upload space can be provided.
Together let's make sure your grand kids will be able to watch scene history without wondering about why in the first half of the century people found shitty encoding artifacts acceptable.
At this point we have about 25 hours worth in an acceptable quality. That's a start.
For re-captures, I am especially interested in "codec killer demos", so staff that flashes a lot, or has layers of noise/grain/nosfe that when watching stuff today on YouTube makes you want to swallow your own eyes.
More captures from oldschool platforms, ideally done on real hardware, would also be most welcome.
For re-captures, I am especially interested in "codec killer demos", so staff that flashes a lot, or has layers of noise/grain/nosfe that when watching stuff today on YouTube makes you want to swallow your own eyes.
More captures from oldschool platforms, ideally done on real hardware, would also be most welcome.
If you are going to provide us with captures, please create a text file with the following format:
PouetId DemoZooID Filename
if PouetId or DemoZooId does not exist, set the field to 0. The filename may contain space characters without any futher escaping.
Example file:
You can find the ids in the URL:
https://www.pouet.net/prod.php?which=93797
https://demozoo.org/productions/317029/
PouetId DemoZooID Filename
if PouetId or DemoZooId does not exist, set the field to 0. The filename may contain space characters without any futher escaping.
Example file:
Code:
93797 317029 Inside A Laser.mp4
12345 0 Inside A Hater.mp4
...
You can find the ids in the URL:
https://www.pouet.net/prod.php?which=93797
https://demozoo.org/productions/317029/
Ah, please have the text file UTF-8 encoded.
Quote:
The end format stored on our servers will be h.265 (hevc) with 10 mbit/s and 160 kbit/s AAC audio
These 10mbit/s are a maximum, average or constant bitrate?
Can your playback handle non-1:1 pixel aspect ratios for captures with uncommon resolutions (like 320x200 VGA)?
If you are encoding a new capture ideally you can provide us with the final file which we then do not need to re-encode.
In this case the following should be used:
- Upscaled to 1920x1080 (select a fitting upscaler depending on your platform if you want sharp pixels)
- 50 or 60 fps
- h.265 hevc
- "main" profile
- 10MBit/s CBR
- AAC
- mp4 or mkv container
Here is an example assuming nvenc:
Alternatively you can send us stuff with h.264 or h.265 in different formats, including VBR. When using h.264 please use 20mbit/s average bitrate. However, in this case we'll need to re-encode stuff on our side.
In this case the following should be used:
- Upscaled to 1920x1080 (select a fitting upscaler depending on your platform if you want sharp pixels)
- 50 or 60 fps
- h.265 hevc
- "main" profile
- 10MBit/s CBR
- AAC
- mp4 or mkv container
Here is an example assuming nvenc:
Code:
ffmpeg.exe -y -hide_banner -stats_period 30 -progress pipe:1 -re -hwaccel auto -fflags +genpts -i "demo.whatever" -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" -vcodec hevc_nvenc -preset slow -profile:v main -b:v 10000k -r 60 -maxrate 10000k -bufsize 10000k -ac 2 -ar 48000 -g 48 -c:a aac -b:a 160k -f mkv "demo.mkv"Alternatively you can send us stuff with h.264 or h.265 in different formats, including VBR. When using h.264 please use 20mbit/s average bitrate. However, in this case we'll need to re-encode stuff on our side.
Quote:
layers of noise/grain/nosfe
nice touch :-)
Quote:
For re-captures, I am especially interested in "codec killer demos", so staff that flashes a lot, or has layers of noise/grain/nosfe that when watching stuff today on YouTube makes you want to swallow your own eyes.
<3 <3 <3
Congratulations for "nosfe effect" invented.
So, before Easter a couple of ppl announced they would be providing captures. Here is a reminder on this :)
This would be great for archiving twitch streams.
Field-FX have been running Monday Byte Jams for several months and the vods quite often get copyright striked for the music after the fact so can't be published.
Field-FX have been running Monday Byte Jams for several months and the vods quite often get copyright striked for the music after the fact so can't be published.
Well, did you do local captures of them?
If you have, ping me on SceneCity, and I will provide you an upload FTP link.
This makes me want to sit down and code nosfe-filter.cpp/h :)
