[Cin] Analog S-Video or HDV capture via HDMI-USB to FFV1.mkv in realtime
Andrew Randrianasulu
randrianasulu at gmail.com
Wed Feb 8 22:47:18 CET 2023
чт, 9 февр. 2023 г., 00:38 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>
> Den 08.02.2023 19:15, skrev Andrew Randrianasulu:
>
>
>
> ср, 8 февр. 2023 г., 20:53 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>>
>>
>> Den 08.02.2023 16:45, skrev Terje J. Hanssen:
>>
>>
>>
>> Den 08.02.2023 15:34, skrev Andrew Randrianasulu:
>>
>>
>>
>> ср, 8 февр. 2023 г., 17:16 Terje J. Hanssen <terjejhanssen at gmail.com>:
>>
>>>
>>>
>>> Den 08.02.2023 14:21, skrev Andrew Randrianasulu:
>>>
>>>
>>>
>>> ср, 8 февр. 2023 г., 14:47 Terje J. Hanssen <terjejhanssen at gmail.com>:
>>>
>>>>
>>>>
>>>> Den 08.02.2023 02:38, skrev Andrew Randrianasulu:
>>>>
>>>>
>>>>
>>>> ср, 8 февр. 2023 г., 04:08 Terje J. Hanssen <terjejhanssen at gmail.com>:
>>>>
>>>>>
>>>>>
>>>>> Den 08.02.2023 00:52, skrev Andrew Randrianasulu:
>>>>>
>>>>>
>>>>>
>>>>> ср, 8 февр. 2023 г., 01:35 Terje J. Hanssen via Cin <
>>>>> cin at lists.cinelerra-gg.org>:
>>>>>
>>>>>>
>>>>>>
>>>>>> Den 02.02.2023 01:46, skrev Terje J. Hanssen:
>>>>>>
>>>>>> .......
>>>>>>
>>>>>>
>>>>>> but I prepare myself to test and use one method left with regards to
>>>>>> "Personal Video Archiving".
>>>>>>
>>>>>> Therefore I have ordered two selected, inexpensive devices (the urls
>>>>>> here are just for English language):
>>>>>>
>>>>>> 1) Capture Card USB HDMI 4K to 1080P USB-C adapter (Speedy USB
>>>>>> 3.2/3.1/3.0, 60 Hz and 1080p FHD.)
>>>>>>
>>>>>> https://www.turascandinavia.com/en/products/computer/microphone-webcam/webcams/74257
>>>>>>
>>>>>> - Fluid video recordings without delays or distortions during
>>>>>> live streaming
>>>>>> - Linux not mentioned, but assumed this is a standard supported
>>>>>> UVC. OBS and VLC is mentioned.
>>>>>>
>>>>>>
>>>>>> Then the first item, Hama Video Recording Stick, HDMI 4k - USB3.x is
>>>>>> received. It promises:
>>>>>> "Fluid video recordings without delays or distortions during live
>>>>>> streaming, thanks to a picture frequency of 60 Hz and 1080p with Full HD.
>>>>>> Transform high-quality video cameras into a high-resolution USB web camera".
>>>>>>
>>>>>> I have done a quick, first test using my Sony HDR-FX7E camera. This
>>>>>> is a HDV 1080i camcorder with MPEG-2 video compression at 25 mbps on tape
>>>>>> 1440x1080, 50i25fps, 4:2:0 and MP2 stereo audio. Currently it's cassette
>>>>>> deck is broken and needs repair service.
>>>>>>
>>>>>> But according to Steve Mullen's V1 and FX7 handbook (not mentioned in
>>>>>> the manual):
>>>>>>
>>>>>> 1. When the camera is operating, the EIP (Enhanced Image Processor)
>>>>>> generates uncompressed 1440x1080i with a 4:2:2 color space. Digital
>>>>>> 4:2:2 data are output via the HDMI port while 4:2:2 analog is output via
>>>>>> component-out. Therefore, you can record 4:2:2 live HD video from the
>>>>>> camera without MPEG-2 compression. V1 and FX7 provide an HDMI output port
>>>>>> that carries uncompressed 4:2:2, 8-bit, digital video plus dual-channel,
>>>>>> PCM, 16-bit, 48kHz audio When the camera is running.
>>>>>>
>>>>>> 2. If you are playing a 1080i50 or 1080i60 HDV tape. The 4:2:0 MPEG-2
>>>>>> is decoded and chroma up-scaled to a 4:2:2. The HDMI
>>>>>> chip downscales 1440 to 1280 while it up-scales 540 to 720. The
>>>>>> result is 720p50 or 720p60, which is output via HDMI.
>>>>>>
>>>>>> That is, I have tested section 1 now, but see now that I didn't test
>>>>>> 1440x1080 resolution. The only resolution I got to work at 25 fps was
>>>>>> 720x576 (SD), while HD 1280x720 and FHD 1920x1080 were set down to 10 fps
>>>>>> and 5 fps respectively by the driver and caused jumpy playback.
>>>>>>
>>>>>
>>>>> Did you tried to force specific format (uncompressed) before -i
>>>>> parameter for ffmpeg?
>>>>>
>>>>>
>>>>> Just "-framerate 25 -video_size 1920x1080" before -i as repeated in
>>>>> the code as follows, where I tested to encode to uncompressed v210 instead
>>>>> of ffv1, but with no change with regards to low 5 fps:
>>>>>
>>>>> ffmpeg -hide_banner -f v4l2 -framerate 25 -video_size 1920x1080 -i
>>>>> /dev/video0 -codec:v v210 -codec:a pcm_s16le -f matroska 1920x1080_v210.mkv
>>>>> [video4linux2,v4l2 @ 0x55944900e0c0] The driver changed the time per
>>>>> frame from 1/25 to 1/5
>>>>>
>>>>> I also read a related issue and reply to this post at Superuser, where
>>>>> 1920x1080 was not supported on the webcam.
>>>>>
>>>>> https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080
>>>>>
>>>>> Also look out for usb2 vs usb3 ports? Shouldn't capture device hang on
>>>>> bus 002 (usb 3.0) root hub, instead of bus 001 (usb 2.0 root hub), from
>>>>> lsusb below?
>>>>>
>>>>>
>>>>> This may well work better. I have to admit that I have never studied
>>>>> the difference between shared usb buses. My thought was to try to change
>>>>> the connected usb devices, but tested first the only free usb3 port (blue)
>>>>> on the add-on frontpanel of the workstation. The other two usb3 ports are
>>>>> on the backpanel and are used for the Asus blu-ray burner and 8TB Seagate
>>>>> expansion video disc.
>>>>>
>>>>> The other usb ports on both panels are usb2 ports, whereof two for the
>>>>> wireless keyboard and mouse on the fronpanel. What I possibly already have
>>>>> mentioned before, is that sometimes if I connect a usb(2) device or memory
>>>>> to the usb3 port on the frontpanel, this cause hang on the keyboard or
>>>>> mouse. But this didn't happend this time with the USB3 capture stick.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Someone here that have suggestion to possibly modified syntax or can
>>>>>> verify that the driver doesn't manage this?
>>>>>>
>>>>>> Another (setup) problem, there was no audio recorded or heard during
>>>>>> playback!?
>>>>>>
>>>>>> In the following I list the test command syntax I've collectedf and
>>>>>> tried with shortened output (yet long):
>>>>>> To explain, I have also another USB 2.0 Webcam connected, beside the
>>>>>> new HDMI-USB3 Videstick.
>>>>>>
>>>>>> Verify the devices, drivers and formats:
>>>>>> ---------------------------------------
>>>>>> dmesg | tail
>>>>>> [22706.060759] perf: interrupt took too long (2521 > 2500), lowering
>>>>>> kernel.perf_event_max_sample_rate to 79250
>>>>>> [32105.561575] perf: interrupt took too long (3158 > 3151), lowering
>>>>>> kernel.perf_event_max_sample_rate to 63250
>>>>>> [40586.477420] usb 1-5: USB disconnect, device number 2
>>>>>> [40599.099612] usb 1-5: new high-speed USB device number 5 using
>>>>>> xhci_hcd
>>>>>> [40599.250960] usb 1-5: New USB device found, idVendor=534d,
>>>>>> idProduct=2109, bcdDevice=21.00
>>>>>> [40599.250972] usb 1-5: New USB device strings: Mfr=1, Product=2,
>>>>>> SerialNumber=0
>>>>>> [40599.250978] usb 1-5: Product: USB Video
>>>>>> [40599.250984] usb 1-5: Manufacturer: MACROSILICON
>>>>>> [40599.252310] usb 1-5: Found UVC 1.00 device USB Video (534d:2109)
>>>>>> [40599.256234] hid-generic 0003:534D:2109.0006: hiddev96,hidraw0: USB
>>>>>> HID v1.10 Device [MACROSILICON USB Video] on usb-0000:00:14.0-5/input4
>>>>>> -----------------------------
>>>>>>
>>>>>> lsusb
>>>>>> Bus 002 Device 003: ID 05e3:0732 Genesys Logic, Inc. All-in-One
>>>>>> Cardreader
>>>>>> Bus 002 Device 002: ID 0bc2:2038 Seagate RSS LLC Expansion HDD
>>>>>> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>>>>>> Bus 001 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver
>>>>>> Bus 001 Device 005: ID 534d:2109 MacroSilicon USB Video
>>>>>> Bus 001 Device 004: ID 0c45:6340 Microdia Camera
>>>>>> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>>>>>>
>>>>>>
>>>>>> udevadm info /dev/video* | egrep 'DEVNAME|ID_V4L_PRODUCT'
>>>>>> E: DEVNAME=/dev/video0
>>>>>> E: ID_V4L_PRODUCT=USB Video: USB Video
>>>>>> E: DEVNAME=/dev/video1
>>>>>> E: ID_V4L_PRODUCT=USB Video: USB Video
>>>>>> E: DEVNAME=/dev/video2
>>>>>> E: ID_V4L_PRODUCT=USB 2.0 Camera: HD 720P Webcam
>>>>>> E: DEVNAME=/dev/video3
>>>>>> E: ID_V4L_PRODUCT=USB 2.0 Camera: HD 720P Webcam
>>>>>>
>>>>>> lsusb | egrep 'Video|Camera'
>>>>>> Bus 001 Device 005: ID 534d:2109 MacroSilicon USB Video
>>>>>> Bus 001 Device 004: ID 0c45:6340 Microdia Camera
>>>>>>
>>>>>> --------------------
>>>>>>
>>>>>> ll /dev/video*
>>>>>> crw-rw----+ 1 root video 81, 0 feb. 7 20:22 /dev/video0
>>>>>> crw-rw----+ 1 root video 81, 1 feb. 7 20:22 /dev/video1
>>>>>> crw-rw----+ 1 root video 81, 2 feb. 7 09:05 /dev/video2
>>>>>> crw-rw----+ 1 root video 81, 3 feb. 7 09:05 /dev/video3
>>>>>>
>>>>>> -----------------------
>>>>>>
>>>>>> v4l2-ctl --list-devices
>>>>>> USB 2.0 Camera: HD 720P Webcam (usb-0000:00:14.0-11):
>>>>>> /dev/video2
>>>>>> /dev/video3
>>>>>>
>>>>>> USB Video: USB Video (usb-0000:00:14.0-5):
>>>>>> /dev/video0
>>>>>> /dev/video1
>>>>>>
>>>>>> -------------------------
>>>>>>
>>>>>> ffmpeg -f v4l2 -list_formats all -i /dev/video0
>>>>>> ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video0
>>>>>> [video4linux2,v4l2 @ 0x556cf63570c0] Compressed: mjpeg
>>>>>> : Motion-JPEG : 1920x1080 1600x1200 1360x768 1280x1024 1280x960
>>>>>> 1280x720 1024x768 800x600 720x576 720x480 640x480
>>>>>> [video4linux2,v4l2 @ 0x556cf63570c0] Raw : yuyv422
>>>>>> : YUYV 4:2:2 : 1920x1080 1600x1200 1360x768 1280x1024 1280x960
>>>>>> 1280x720 1024x768 800x600 720x576 720x480 640x480
>>>>>> /dev/video0: Immediate exit requested
>>>>>>
>>>>>> ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video1
>>>>>> [video4linux2,v4l2 @ 0x5560c0bc70c0] ioctl(VIDIOC_G_INPUT):
>>>>>> Inappropriate ioctl for device
>>>>>> /dev/video1: Inappropriate ioctl for device
>>>>>> ----------------
>>>>>>
>>>>>> v4l2-ctl --all
>>>>>> Driver Info (not using libv4l2):
>>>>>> Driver name : uvcvideo
>>>>>> Card type : USB Video: USB Video
>>>>>> Bus info : usb-0000:00:14.0-5
>>>>>> Driver version: 5.14.21
>>>>>> Capabilities : 0x84A00001
>>>>>> Video Capture
>>>>>> Metadata Capture
>>>>>> Streaming
>>>>>> Extended Pix Format
>>>>>> Device Capabilities
>>>>>> Device Caps : 0x04200001
>>>>>> Video Capture
>>>>>> Streaming
>>>>>> Extended Pix Format
>>>>>> Priority: 2
>>>>>> Video input : 0 (Camera 1: ok)
>>>>>> Format Video Capture:
>>>>>> Width/Height : 1920/1080
>>>>>> Pixel Format : 'MJPG'
>>>>>> Field : None
>>>>>> Bytes per Line : 0
>>>>>> Size Image : 4147200
>>>>>> Colorspace : sRGB
>>>>>> Transfer Function : Rec. 709
>>>>>> YCbCr/HSV Encoding: ITU-R 601
>>>>>> Quantization : Default (maps to Full Range)
>>>>>> Flags :
>>>>>> Crop Capability Video Capture:
>>>>>> Bounds : Left 0, Top 0, Width 1920, Height 1080
>>>>>> Default : Left 0, Top 0, Width 1920, Height 1080
>>>>>> Pixel Aspect: 1/1
>>>>>> Selection: crop_default, Left 0, Top 0, Width 1920, Height 1080
>>>>>> Selection: crop_bounds, Left 0, Top 0, Width 1920, Height 1080
>>>>>> Streaming Parameters Video Capture:
>>>>>> Capabilities : timeperframe
>>>>>> Frames per second: 30.000 (30/1)
>>>>>> Read buffers : 0
>>>>>> brightness 0x00980900 (int) : min=-128
>>>>>> max=127 step=1 default=-11 value=-11
>>>>>> contrast 0x00980901 (int) : min=0 max=255
>>>>>> step=1 default=148 value=148
>>>>>> saturation 0x00980902 (int) : min=0 max=255
>>>>>> step=1 default=180 value=180
>>>>>> hue 0x00980903 (int) : min=-128
>>>>>> max=127 step=1 default=0 value=0
>>>>>>
>>>>>> -----------------
>>>>>>
>>>>>> v4l2-ctl --list-formats-ext
>>>>>> ioctl: VIDIOC_ENUM_FMT
>>>>>> Index : 0
>>>>>> Type : Video Capture
>>>>>> Pixel Format: 'MJPG' (compressed)
>>>>>> Name : Motion-JPEG
>>>>>> Size: Discrete 1920x1080
>>>>>> Interval: Discrete 0.017s (60.000 fps)
>>>>>> Interval: Discrete 0.033s (30.000 fps)
>>>>>> Interval: Discrete 0.040s (25.000 fps)
>>>>>> Interval: Discrete 0.050s (20.000 fps)
>>>>>> Interval: Discrete 0.100s (10.000 fps)
>>>>>> .........
>>>>>> Size: Discrete 1280x720
>>>>>> Interval: Discrete 0.017s (60.000 fps)
>>>>>> Interval: Discrete 0.020s (50.000 fps)
>>>>>> Interval: Discrete 0.033s (30.000 fps)
>>>>>> Interval: Discrete 0.050s (20.000 fps)
>>>>>> Interval: Discrete 0.100s (10.000 fps)
>>>>>> ......
>>>>>> Size: Discrete 720x576
>>>>>> Interval: Discrete 0.017s (60.000 fps)
>>>>>> Interval: Discrete 0.020s (50.000 fps)
>>>>>> Interval: Discrete 0.033s (30.000 fps)
>>>>>> Interval: Discrete 0.050s (20.000 fps)
>>>>>> Interval: Discrete 0.100s (10.000 fps)
>>>>>>
>>>>>
>>>>
>>>> well, it seems we know by now why this device was ...unexpensive.
>>>>
>>>>
>>>> Yes, I have a "90-days open order" and will start to search for
>>>> another, better UVC video capture device.
>>>> The problem is the lack of definitive specifications, compared with my
>>>> proprietary BMD devices.
>>>>
>>>>
>>>> it really seems to report only 5-10 fps at fullHD uncompresed, anything
>>>> bigger is mjpeg ...
>>>>
>>>>
>>>> Type : Video Capture
>>>> Pixel Format: 'YUYV'
>>>> Name : YUYV 4:2:2
>>>> Size: Discrete 1920x1080
>>>> Interval: Discrete 0.200s (5.000 fps)
>>>>
>>>> This can absolutely not be what they promote as:
>>>> "Fluid video recordings without delays or distortions during live
>>>> streaming, thanks to a picture frequency of 60 Hz and 1080p with Full HD".
>>>>
>>>>
>>>>
>>>> https://superuser.com/questions/1449252/ffmpeg-captures-from-uvc-dev-video0-in-any-resolution-except-for-1920x1080
>>>>
>>>>
>>>> I also tried that link's suggested syntax
>>>>
>>>> ffmpeg -y -t 15 -f video4linux2 -video_size 1920x1080 -input_format nv12 -timestamps abs -use_libv4l2 1 -i /dev/video0 out.mov
>>>>
>>>> but it didn't work for me, just quitted ffmpeg with
>>>>
>>>> Unrecognized option 'timestamps'.
>>>> Error splitting the argument list: Option not found
>>>>
>>>> Looking at ffmpeg man pages at https://manpages.org/ffmpeg/1 there
>>>> also is a similar video4linux2 syntax example
>>>>
>>>> Grab and record the input of a video4linux2 device, leave the frame
>>>> rate and size as previously set:
>>>> ffmpeg -f video4linux2 -input_format mjpeg -i /dev/video0 out.mpeg
>>>>
>>>>
>>>> - video_size
>>>> - Set the video frame size. The argument must be a string in
>>>> the form WIDTHxHEIGHT or a valid size abbreviation.
>>>> - pixel_format
>>>> - Select the pixel format (only valid for raw video input).
>>>> - input_format
>>>> - Set the preferred pixel format (for raw video) or a codec
>>>> name. This option allows one to select the input format, when several are
>>>> available.
>>>>
>>>> But what should be set as input_format in this case?
>>>>
>>>>
>>> YUYV ? (lowercase)
>>>
>>>
>>> ffmpeg -hide_banner -f video4linux2 -input_format yuyv -i /dev/video0
>>> out.mkv
>>> [video4linux2,v4l2 @ 0x55b25017e0c0] No such input format: yuyv.
>>> /dev/video0: Invalid argument
>>>
>>
>> :(
>>
>>
>> Yes, 'yuyv422' at least not returned any errors, but just verified 5 fps
>> from the encoded file
>>
>> ffmpeg -hide_banner -f video4linux2 -input_format yuyv422 -i /dev/video0
>> out.mkv
>>
>> ffprobe -hide_banner out.mkv
>> Input #0, matroska,webm, from 'out.mkv':
>> Metadata:
>> ENCODER : Lavf58.76.100
>> Duration: 00:00:12.40, start: 0.000000, bitrate: 2 kb/s
>> Stream #0:0: Video: vp9 (Profile 1), yuv422p(tv, progressive),
>> 1920x1080, 5 fps, 5 tbr, 1k tbn, 1k tbc (default)
>> Metadata:
>> ENCODER : Lavc58.134.100 libvpx-vp9
>> DURATION : 00:00:12.400000000
>>
>> Any idea why the audio:0kB from '-codec:a pcm_s16le' disappeared in the
>> encoded files?
>>
>> inxi -GA
>> Graphics: Device-1: NVIDIA GK208B [GeForce GT 730] driver: nouveau v:
>> kernel
>> Device-2: Microdia Camera type: USB driver:
>> snd-usb-audio,uvcvideo
>> Device-3: MacroSilicon USB Video type: USB driver:
>> hid-generic,snd-usb-audio,usbhid,uvcvideo
>> Display: server: SUSE LINUX 1.20.3 driver: loaded: nouveau
>> unloaded: fbdev,modesetting,vesa
>> resolution: 2560x1440~60Hz
>> OpenGL: renderer: llvmpipe (LLVM 11.0.1 256 bits) v: 4.5 Mesa
>> 21.2.4
>> Audio: Device-1: Intel 100 Series/C230 Series Family HD Audio driver:
>> snd_hda_intel
>> Device-2: NVIDIA GK208 HDMI/DP Audio driver: snd_hda_intel
>> Device-3: Microdia Camera type: USB driver:
>> snd-usb-audio,uvcvideo
>> Device-4: MacroSilicon USB Video type: USB driver:
>> hid-generic,snd-usb-audio,usbhid,uvcvideo
>> Sound Server-1: ALSA v: k5.14.21-150400.24.41-default running:
>> yes
>> Sound Server-2: PulseAudio v: 15.0 running: yes
>> Sound Server-3: PipeWire v: 0.3.49 running: yes
>>
>
>
> I think for audio you need few more alsa switches:
>
>
> https://askubuntu.com/questions/1451630/hdmi-capture-card-macrosilicon-ms2109-missing-audio-device-on-ubuntu-22-04
>
>
> something like this but find/use your own alsa device :)
>
>
> What I feel unused to is the need to set ffmpeg code both Audio and Video
> input format and input device respectively.
> A couple of syntax examples for audio found:
>
> ffmpeg \
>
> -f alsa -ac 2 -i hw:CARD=HDMI,DEV=0
> https://trac.ffmpeg.org/wiki/Capture/V4L2_ALSA
>
> -f pulse -ac 2 -i default
>
> https://dev.to/ethand91/how-to-record-webcam-video-and-audio-using-ffmpeg-419c
>
> Suggestions here what to use from the listing below?
>
try -f pulse -i default, (or sysdefault) because your system already set it
up as first rec. device?
for -f alsa try -i hw:CARD=MS2109,DEV=0
default audio should be 2 ch/48khz pcm
see
https://patchwork.kernel.org/project/alsa-devel/patch/20200702071433.237843-1-marcan@marcan.st/#23469437
Also, ms2109 confirmed .. :(
> cat /proc/asound/cards
> 0 [MS2109 ]: USB-Audio - MS2109
> MacroSilicon MS2109 at usb-0000:00:14.0-5, high speed
> 1 [Camera ]: USB-Audio - USB 2.0 Camera
> Sonix Technology Co., Ltd. USB 2.0 Camera at
> usb-0000:00:14.0-11, high speed
> 2 [PCH ]: HDA-Intel - HDA Intel PCH
> HDA Intel PCH at 0xdf420000 irq 139
> 3 [NVidia ]: HDA-Intel - HDA NVidia
> HDA NVidia at 0xdf080000 irq 17
>
> arecord -L
> null
> Discard all samples (playback) or generate zero samples (capture)
> sysdefault
> Default Audio Device
> speexrate
> Rate Converter Plugin Using Speex Resampler
> pulse
> PulseAudio Sound Server
> upmix
> Plugin for channel upmix (4,6,8)
> default
> Default ALSA Output (currently PulseAudio Sound Server)
> sysdefault:CARD=MS2109
> MS2109, USB Audio
> Default Audio Device
> front:CARD=MS2109,DEV=0
> MS2109, USB Audio
> Front output / input
> sysdefault:CARD=Camera
> USB 2.0 Camera, USB Audio
> Default Audio Device
> front:CARD=Camera,DEV=0
> USB 2.0 Camera, USB Audio
> Front output / input
> sysdefault:CARD=PCH
> HDA Intel PCH, ALC892 Analog
> Default Audio Device
> front:CARD=PCH,DEV=0
> HDA Intel PCH, ALC892 Analog
> Front output / input
>
>
>
>
>
>
> for laughs you can try cingg's internal v4l2 capture
>
>
>
>
>>
>>
>>
>> sorry, may be ask on ffmpeg support channel then?
>>
>>
>> p.s. fake 1080 at 60 usb dongles def. exist, made me sad
>>
>> https://www.naut.ca/blog/2020/07/09/cheap-hdmi-capture-card-review/
>>
>> p.p.s may be try to contact this person so you can confirm/deny exact
>> chip (set) in this device, or at very minimum confirm it based on
>> something else?
>>
>> https://github.com/BertoldVdb/ms-tools
>>
>> "Program, library and reference designs to develop for MacroSilicon
>> MS2106/MS2109/MS2130 chips."
>>
>>
>> Interesting stuff. Mat in a previous thread referred to a couple of other
>> links (article test)
>> https://lists.cinelerra-gg.org/pipermail/cin/2021-October/003960.html
>>
>>
>>
>>
>>
>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>> Index : 1
>>>>>> Type : Video Capture
>>>>>> Pixel Format: 'YUYV'
>>>>>> Name : YUYV 4:2:2
>>>>>> Size: Discrete 1920x1080
>>>>>> Interval: Discrete 0.200s (5.000 fps)
>>>>>> ......
>>>>>> Size: Discrete 1280x720
>>>>>> Interval: Discrete 0.100s (10.000 fps)
>>>>>> .......
>>>>>> Size: Discrete 720x576
>>>>>> Interval: Discrete 0.040s (25.000 fps)
>>>>>> Interval: Discrete 0.050s (20.000 fps)
>>>>>> Interval: Discrete 0.100s (10.000 fps)
>>>>>> Interval: Discrete 0.200s (5.000 fps)
>>>>>> .........
>>>>>>
>>>>>> Encoding:
>>>>>> --------
>>>>>> ffmpeg -hide_banner -f v4l2 -framerate 25 -video_size 720x576 -i
>>>>>> /dev/video0 -codec:v ffv1 -codec:a pcm_s16le -f matroska 720x576_ffv1.mkv
>>>>>>
>>>>>> ffmpeg -hide_banner -f v4l2 -framerate 25 -video_size 1280x720 -i
>>>>>> /dev/video0 -codec:v ffv1 -codec:a pcm_s16le -f matroska 1280x720_ffv1.mkv
>>>>>> [video4linux2,v4l2 @ 0x559d031190c0] The driver changed the time per
>>>>>> frame from 1/25 to 1/10
>>>>>>
>>>>>> ffmpeg -hide_banner -f v4l2 -framerate 25 -video_size 1920x1080 -i
>>>>>> /dev/video0 -codec:v ffv1 -codec:a pcm_s16le -f matroska 1920x1080_ffv1.mkv
>>>>>> [video4linux2,v4l2 @ 0x55ce18d060c0] The driver changed the time per
>>>>>> frame from 1/25 to 1/5
>>>>>>
>>>>>> ffmpeg -hide_banner -f v4l2 -framerate 25 -video_size 1920x1080 -i
>>>>>> /dev/video0 -codec:v v210 -codec:a pcm_s16le -f matroska 1920x1080_v210.mkv
>>>>>> [video4linux2,v4l2 @ 0x55944900e0c0] The driver changed the time per
>>>>>> frame from 1/25 to 1/5
>>>>>>
>>>>>>
>>>>>> Recorded test video files and probing formats:
>>>>>> ---------------------------------------------
>>>>>>
>>>>>> du -sh *
>>>>>> 258M 1280x720_ffv1.mkv
>>>>>> 292M 1920x1080_ffv1.mkv
>>>>>> 1,1G 1920x1080_v210.mkv
>>>>>> 61M 720x576_ffv1.mkv
>>>>>> -----------------------------
>>>>>>
>>>>>>
>>>>>> ffprobe -hide_banner 720x576_ffv1.mkv
>>>>>> Input #0, matroska,webm, from '720x576_ffv1.mkv':
>>>>>> Metadata:
>>>>>> ENCODER : Lavf58.76.100
>>>>>> Duration: 00:00:09.20, start: 0.000000, bitrate: 55385 kb/s
>>>>>> Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv422p(tv,
>>>>>> progressive), 720x576, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
>>>>>> Metadata:
>>>>>> ENCODER : Lavc58.134.100 ffv1
>>>>>> DURATION : 00:00:09.200000000
>>>>>> -----------
>>>>>>
>>>>>> ffprobe -hide_banner 1280x720_ffv1.mkv
>>>>>> Input #0, matroska,webm, from '1280x720_ffv1.mkv':
>>>>>> Metadata:
>>>>>> ENCODER : Lavf58.76.100
>>>>>> Duration: 00:00:38.90, start: 0.000000, bitrate: 55512 kb/s
>>>>>> Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv422p(tv,
>>>>>> progressive), 1280x720, 10 fps, 10 tbr, 1k tbn, 1k tbc (default)
>>>>>> Metadata:
>>>>>> ENCODER : Lavc58.134.100 ffv1
>>>>>> DURATION : 00:00:38.900000000
>>>>>> --------------
>>>>>>
>>>>>> ffprobe -hide_banner 1920x1080_ffv1.mkv
>>>>>> Input #0, matroska,webm, from '1920x1080_ffv1.mkv':
>>>>>> Metadata:
>>>>>> ENCODER : Lavf58.76.100
>>>>>> Duration: 00:00:53.40, start: 0.000000, bitrate: 45747 kb/s
>>>>>> Stream #0:0: Video: ffv1 (FFV1 /
>>>>>>
>>>>>
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