It’s not very lossy. I’m a little more sensitive about it because I’ve experimented heavily with bitrates and compression and it sticks out to me. It still looks fantastic, you can just see compression artifacts like softness of text against a moving background, stuff like that. I think there may be some sort of color space issue too that makes everything seem just a little bit off.
I think the high bitrate is actually 56 Mb/s. I haven’t played with the lower stuff yet, I’m going to test out medium tonight, which is around 23. If it’s not a very noticible dip in quality, I’ll probably use that, and then just upload those directly to youtube rather than compressing further.
As far as the SSD, yeah, I moved the buffer file off my SSD as per post #13, as I advise anyone else to do. I was just wondering if I should shut it off during games I have no intention of ever recording to save some HD wear, or just turn it on and forget about it.
1080p60 video has a raw data rate of 3 Gb/s. So, 40 Mb/s is still 75:1 compression. It’s astonishing that it looks as good as it does! Also, h.264 is optimized for film and video, not games. Games tend to be a bit sharper, brightly colored, etc. and are more prone to displaying artifacts.
Alright, so how do you edit these videos? Virtualdub doesn’t want to read H264 even though I installed an H264 VFW codec. AVIDemux does it, but it’s kind of clunky, but it’s adequate for just cropping out the parts you don’t want. But even though it does direct stream copy of the video, when you take 2 chunks of videos and then string them together in avidemux, there’s a significant quality loss. Which makes no sense, because it isn’t re-encoding the clips, just stacking them together, so I don’t understand it.
I just need basic editing - cutting out parts of clips mostly. It’d be good to be able to transcode to a lower bitrate and lower frame rate with the final product to cut down on upload times, but for the most part I basically want to be able to take clips from videos and later string them together without any quality loss. What software do I want?
h.264 cna introduce hue changes, but yeah, sometimes it seems more like a color shift. Hopefully this is something that can be fixed or fine tuned in the future and not something that’s part of the way the hardware encoder works.
It’s also possible that it has something to do with the way the encoder is fed a frame. It’s actually copied direct from the GPU buffer, but maybe it happens before certain post processing effects are rendered?
As for editing I’ve used Premier Pro, Premier elements and TMPG Video mastering works and they all work fine.
That’s really weird. I use avidemux to do just that, since that’s pretty much the freeware standard. I haven’t noticed any loss of quality, but I’m not doing 50 Mbit bitrates either. When you save the file that you’ve appended the second video segment to, does it take a long time to save like it’s transcoding the video or does it take one second?
I don’t see why you couldn’t just use avidemux to crunch the bitrate down again if you wanted to. It’s certainly capable of it. Just append all of your scenes together and set the bitrate you want for upload to the video output instead of copying the data directly.
The patch last week added microphone recording and a few other things, but the videos I’ve recorded… even though I sound fine on mumble, on the recordings they clip really hard and sound pretty awful. Anyone else experience that?
Does it record the audio separately, or on the video? I know for most LP purposes commentators prefer to have separate audio/commentary tracks for editing and sound balancing.
It records it on the video. Recording separately is fine for making “let’s play” type videos, because you’ll end up with 30 minutes of video and 30 minutes of audio. But with shadowplay, retroactively recording stuff - you would have to record all of the audio, figure out where the video starts, edit the audio to sync it up, etc. Impractical. I’m trying a different mic tonight to see if it helps.
Most computer sound cards are made for playback and are very poor at recording. Assuming you don’t have something like anM-Audio Audiophile 192 in your computer, your easiest solution is probably a USB microphone.
Two I am familiar with: theBlue Snowball, popular with podcasters, it does a decent job for voice recording. For a little more money, the Audio-Technica AT2020 USB is a “real” microphone that does a fine job even with difficult tasks like recording acoustic guitar.
USB mics have their own sound card (designed to record, not to playback) built in.
I’m using a 3.5mm microphone with my soundblaster Z now, which fixed my clipping problems and sounds good.
AVIDemux is being weird. I figured out that if I use an mp4 container rather than AVI, it’ll play in all video players, and not just VLC. It also seems to be able to stitch videos correctly… sometimes. I just stitched 2 clips together, A and B… using copy for audio and video, and mp4 container… and the first time I tried saving it… it played the video A to B, but it played the audio B to A. Which doesn’t make any sense. Re-saving it, doing the exact same thing, made a correctly working video.
Does anyone have a good workflow for editing shadowplay videos? If you use avidemux, how exactly are you doing it? If you’re using some other software, what? I’m running into the dumbest problems.
I’m using the Windows 8 video editor (Movie Maker I think it’s called). Seems to work fine with the files that Shadowplay creates. It has very simple editing tools but enough for what I want:
Big GeForce experience patch adding pretty much all the requested features I can think of:
There was a patch about 6 weeks ago that added twitch streaming that works really well. You can see what the twitch stream looks like for example on high quality and on medium
Cool deal, I can record at 2560x1440 (I hope, it says 2500 but that’s probably what it meant) so it doesn’t distort things when it downsamples to 1080. The Push To Talk function was needed for a while too - I think the programmers misunderstood what they were doing because the original patch that added muting made it sound like they thought they were adding a push to talk button.
I wonder if the desktop capture mode means you can record stuff in windowed mode, without necesarily gettng the whole desktop.
Also, has anyone been using the twitch streaming function lately? The first time they released it, it worked flawlessly for me - the streaming was really good. But after they patched it, I couldn’t get it to work right - it would appear to get stuck a lot, then suddenly advance the video a lot at high speed, then get stuck again. I’ll test it out and see if it’s working I suppose.
Still not a terribly huge fan of AVIDEMUX but I’m not sure what else to use. What are you guys using?
