HDMI to USB grabber

[bohosh]

Hi,
is it possible to add this kind of device to nextpvr?

[sub]

It won't work with that specific device.

For HDMI->USB, it does work with the Hauppauge devices like the HDPVR2 or Rocket, or their PCIe Colossus2. You can also use various HDMI network encoders (like those on aliexpress)

[mvallevand]

I use one a similar device with linux and windows as an extra device with no real issue.  I have a post about it on the forum.  Ffmpeg typically allow USB video devices as input.  Audio on linux is a bit trickier

Martin

[bohosh]

Thanks Martin,
may you please point me to your post about this kind of devices....I really need to add this device to my nextpvr config. Personally I use windows.
BR

[Graham]

Thanks Martin,
may you please point me to your post about this kind of devices....I really need to add this device to my nextpvr config. Personally I use windows.
BR

Ere Tis ... https://forums.nextpvr.com/showthread.ph...#pid543752

[mvallevand]

Here's my post https://forums.nextpvr.com/showthread.ph...light=hdmi but it doesn't have the extra.

I don't have the Windows one around but what I use on linux (after the blaster is)

Code:

ffmpeg -v panic -threads 1 -re -vaapi_device /dev/dri/renderD128 -rtbufsize 100000k -f alsa -thread_queue_size 2048 -i plughw:CARD=Video -f v4l2 -thread_queue_size 2048 -input_format mjpeg -s 1280x720 -r 30 -i /dev/v4l/by-id/usb-MACROSILICON_USB_Video-video-index0 -vf 'format=nv12,hwupload'  -c:v h264_vaapi -acodec aac -b:a 192k -f mpegts  -vsync 1 -async 1 - &

On Windows because it is DirectShow you don't need to go through all these hoops to get h/w acceleration.

You should be able to find your devices on Windows with if you follow this https://www.rickmakes.com/using-a-cheap-...indows-10/ start with getting "C:\Program Files\NextPVR\Other\ffplay" working but add -vcodec h264 -acodec aac -f mpegts because that is what NextPVR wants

Assuming you get that let me know and I will help with the extra if you provide the ffplay command line.

Martin

[bohosh]

Hi,
many thanks for your help.
I found that Ffmpeg use 64bit windows. Unfortunately my pc is 32bit cpu, so I need to find first compatible hardware.
May you please give me an advice, which one of the cpu is good for that job?
I found some with "Intel® Celeron® N3160 Braswell SoC Processor"...
What is your option about it? Is it compatible?
I choose it because it cheep and fanless.
Also how many RAM I need for that job too?
BR

[mvallevand]

Doesn't the ffmpeg that comes with NextPVR work? I asked you to try "C:\Program Files\NextPVR\Other\ffplay" which should be 32 bit.

Sorry I don't know your use case or platform. My linux box lower can't do 1080p capture in real time even with GPU acceleration but that is Radeon embedded. I like QSV and your Braswell choice is probably going to be pretty good with NextPVR web but don't hold me to that. The device still has to read from USB and NextPVR has to write to disk so it is not all raw GPU.

Martin

[bohosh]

Hi, just made a test and its working with ffplay.
I can't figure it out the line to get nextpvr to find the device.
I just can watch to my pc...but not by the nextpvr.
I need to get it in 1080p/30

BR

[mvallevand]

Are your running ffplay with the transcoding I recommended? Simple playing won't be a good enough test since ffplay understands mjpeg video.

Also are you running v5? If so you will need to create an extra as I posted earler.

Martin