[Solved]USB capture device stuck on 10 fps

[sum_guy]

My source is a ROKU 3 on wifi capture software is OBS.
Here is the one I bought, currently unavailable on Amazon though.

https://www.amazon.com/gp/product/B08YRWB7VD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

[jagabo]

Regarding my realtime IVTC cap in post #20, I tracked the A/V sync problem down to the "decimate=5". Without that the audio and video stay in sync. Decimation doesn't normally cause an A/V sync problem (if I capture as MJPEG first, then decimate that file with ffmpeg the output doesn't have a sync error) but I guess doing it in realtime is causing something to mess up. Switching to faster encoder settings (or a faster codec) didn't help. Changing the order of the filters (crop first, decimate second should be a little faster) didn't help either. It's unfortunate since most of what I would want to capture is film based.

I also figured out how to get the levels correct without adjusting the capture device's proc amp. Here's the IVTC script with that modification:

ffmpeg -y -color_range tv -f dshow -rtbufsize 1G -rtbufsize 1G -show_video_device_dialog true -show_video_crossbar_connection_dialog true -video_size 1920x1080 -framerate 30.00 -i video="USB Video":audio="Digital Audio Interface (USB Digital Audio)" ^
-pix_fmt p010le -vf crop=1920:800:0:140,decimate=5,scale=in_color_matrix=bt709:in_range=limited:out_color_matrix=bt709:out_range=limited ^
-c:v hevc_qsv -preset:v veryfast -global_quality 18 -profile:v main10 -colorspace bt709 -color_range tv -c:a pcm_s16le output24p.mkv

I think the scale filter as used here doesn't actually do anything to the video, it just prevents the automatic full-range to limited-range conversion before sending it to the encoder.

[jagabo]

My source is a ROKU 3 on wifi capture software is OBS.

Looks good. Is that HDCP protected content? I haven't tried to capture any HDCP protected HDMI sources yet.

[sum_guy]

Is that HDCP protected content

I'm not certain but I believe it's HDCP 1.3

[jagabo]

Is that HDCP protected content

I'm not certain but I believe it's HDCP 1.3

Thanks. I checked for myself today too (had to remove the Blu-ray player from the A/V rack to test). I was able to capture from DVDs, BDs, and Netflix.

[sum_guy]

I was able to capture from DVDs, BDs, and Netflix.

I didn't even think about my DVD's and BD's, I'm going to need a lot more storage now!

[sebus]

Capture? Why not just copy the original?

[sum_guy]

My capture machine doesn't have an optical drive.

[jagabo]

Capture? Why not just copy the original?

In my case I was just checking to see if the device would capture HDCP protected HDMI sources.

[usually_quiet]

One of the many available cheap USB HDMI capture
USB\VID_534D&PID_2109&REV_2100&MI_02

VD2 is stuck on 10fps with no option to change it anywhere

Device can supply 1080p @ 60fps (I can set it easily in ie VLC or OBS)

Any ideas?

Thanks

sebus

edit:
I NEVER intended to capture 1080p@60
I have no reason to
I would never expect £15 gear to be able to do it reliable
(The fact that it works at all is already amazing)

I was only testing and it was well answered below:

VirutalDub2's Video -> Set Custom Format to MJPEG and Custom Size to 1280x720, and Video -> Capture Pin -> Frame Rate to 60, ColorSpace to MJPG, and OutputSize to 1280x720.

Seriously? You wrote "Device can supply 1080p @ 60fps (I can set it easily in ie VLC or OBS)." How was anyone to guess from your first post (as originally written) that 1080p @ 60fps is not a resolution and framerate you believed this device would be capable of delivering in its captures?

[sebus]

No idea what you mean, but I do not care for this device, or it’s capture abilities
I use it mainly as a “monitor” for RPi

It was fun to give it a go, but I have nothing to capture anyway any more (last tapes I done years ago)
But it can capture just fine (or acceptable or whatever opinion one might have)

If one wants something better this could be an option (10x + the cost)

http://www.tystvideo.com/en/product_detail/172/411.html

Honestly I had simply no idea where to set the options in VD2 (last time I used VD was a decade ago)

Hence the thread is solved

[sebus]

My capture machine doesn't have an optical drive.

For a usb2 that is few $ £ € on fleebay
Way quicker than real-time copy…

[sebus]

Capture? Why not just copy the original?

In my case I was just checking to see if the device would capture HDCP protected HDMI sources.

None of there cheapos respect HDCP