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thethrillness.blogspot.com
I was wondering if anyone with extensive Amarec knowledge has ever considered doing this (or currently does it). I guess some users do it for streaming: https://forum.speeddemosarchive.com/post/60_fps_streaming_with_sd_content_older_consoles240p.html

The way SDA submission with retro consoles has been to capture interlaced and then deinterlace with anri or Yua.

However, Amarec and its deinterlacing methods (action, role play, retro) have brought up a question. Should we actually be capturing retro consoles using this deinterlacing filter? This way we can simply just say yes to progressive scan in Yua. This might lead to reduced encoding times?

Here's an example of Amarec's deinterlacing feature which outputs 720x480 at 59.94 using a SNES with S-Video and the latest card from Micomsoft.

Thread title:  
deinterlacing d4 content takes basically no time. it should be less than 1% of the encoding time. however if telling people to use correct deinterlacing filters in amarec reduces the number of people who fuck up interlaced capture then it is definitely worthwhile. the whole interlaced video (two fields in one frame) thing is a disaster waiting to happen and it makes absolutely no sense for old consoles which are really producing 240p video rather than 480i. the only reason you see 480i video from 240p consoles is that's what the capture device driver poops out.
Not a walrus
Amarec's deinterlacer chews a LOT of cpu time (the problem in general does) but it should in theory be suitable for older games. It's definitely inferior for true 480i material.
Edit history:
nate: 2013-06-16 05:17:50 pm
is it seriously doing something other than a field split and resize when it's on the right mode?

edit: right mode meaning retro or whatever ... i understood this thread as talking about only d4 content.
thethrillness.blogspot.com
I was specifically asking about 240p video. If it takes too much CPU time then probably not worth it (the Amarec pages did say it had low spec requirements for the retro game deinterlacer).
Not a walrus
When I used the retro deinterlacer it was chewing an entire extra core.
Edit history:
Omnigamer: 2013-06-16 08:36:14 pm
All the things
I've never seen it use that much. Any time I use it as a passthrough for streaming it uses at most 10% of a single core.

Oh and with regard to the topic, there's really no reason to capture the filtered/deinterlaced footage. You can get to much more appropriate filters during the postprocessing when you aren't restricted to real-time resources or otherwise.
Edit history:
TheThrillness: 2013-06-16 09:04:49 pm
TheThrillness: 2013-06-16 09:04:35 pm
TheThrillness: 2013-06-16 09:04:10 pm
thethrillness.blogspot.com
Quote from Omnigamer:
You can get to much more appropriate filters during the postprocessing when you aren't restricted to real-time resources or otherwise.


I'm guessing you mean this if you are not streaming simultaneously? Would there be a way to give my viewers the deinterlaced video while capturing interlaced? Maybe just check the deinterlace option in XSplit/OBS (if it has one yet)?
Edit history:
Omnigamer: 2013-06-16 09:16:58 pm
All the things
That is exactly what I'm saying, and in most cases AmaRec should do that by default. Under the recording tab, you should see an option for use filters yes/no. If you select no, no filters will be applied to the recording but you'll still be piping the deinterlaced content to the main window/Live.

Also, XSplit deinterlacing is not field deinterlacing, so you'll instead just end up with blended frames at 30 fps. OBS as far as I know does not have a deinterlacing option yet, but I imagine it would be the same since field deinterlacing is far more uncommon or application-specific.
thethrillness.blogspot.com
Thanks. I forgot about the filter on/off feature. All set then! Smiley