Please dont sue us.

I am aware there are video capture cards with 5.1 audio capture that go on the PCI slots, but most are for PCIx16 and my desktop is PCIx8 (I believe).

But for now the USB capture cards seem to be my only option.

Even the DeckLink 4K Extreme 12G that captures 4K60 is 8-lane Gen 2.

Do you know offhand the bitrate and quality of the AAC audio coding the Hauppauge uses.

Since audio quality matters more than video (5.1 PCM sounds tasty), I can settle for even 720p (as the TV I have is 720p only, thats what I have all my equipment outputting to) if the video quality is good or better than the AGPTek box I have.

However, since the Hauppauge has a easier setup, can do 1080p, and capture 5.1 even through HDMI (from what Im hearing), but through DD streams only, this may be a tough call.

Im not an audio guy so I cant offer any opinion, but you can grab a sample to listen for yourself here.

It sends uncompressed 4:2:2 video over the PCIe bus, so your computer is tasked with doing the encoding unlike the HD PVR2 or your AGPTek box.

If you use a speedy enough storage hard drive (not your Windows drive) or a large SSD you could capture lossless and then compress to H.264 or anything else at your leisure, with better quality for a given bitrate than is possible with any realtime solution.

This is critical to deciding on the most appropriate solution, because if youre capturing from something like a cable box then 5.1 PCM does you no good.

Most cable boxes will output only stereo if the HDMI handshake tells them that DD 5.1 isnt supported.

None of that helps a cable recording, where the box cant be forced to do anything.

Quote Report Author Supermartyoh Time 20-Jul-2015 6:18 PM (Edited) Post link.

Sorry I didnt mention this in my first post (wanted to get the main questions out of the way first), but my video sources are mainly MP4s and m2ts (H264 codec), as Windows Media Player can play any MP4 file (even 60fps) fine, while VLC is choppy with MP4s but can handle m2ts videos flawlessly.

AAC for the Hauppauge is pretty good, better than 111kbs on the AgpTek box I currently have.

Ill be listening to that sample to determine if the Hauppauge has good enough quality for my needs, as I spruce up the sound anyway and increase the bass and such (of course, I also upsample the audio to 5.1 as a WAV).

Quote Report Author Supermartyoh Time 26-Aug-2015 9:05 PM (Edited) Post link Heard the audio on some of the captures posted on the site you linked.

While AAC and a stereo downmix, it doesnt have that heavy metallic ringing present in the AGPtek, because it seems the HP has a much higher bitrate with its AAC encoding.

I may stick to the Hauppauge because it seems easier to use, and I dont feel like spending any more money on internal upgrades for my Pavilion, when Ill likely be getting a Win 10 unit down the road (hopefully with much better specs, ala Intel I5 and 16GBs of ram).

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