чт, 9 февр. 2023 г., 00:38 Terje J. Hanssen <[email protected]>:
> > > Den 08.02.2023 19:15, skrev Andrew Randrianasulu: > > > > ср, 8 февр. 2023 г., 20:53 Terje J. Hanssen <[email protected]>: > >> >> >> 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 <[email protected]>: >> >>> >>> >>> Den 08.02.2023 14:21, skrev Andrew Randrianasulu: >>> >>> >>> >>> ср, 8 февр. 2023 г., 14:47 Terje J. Hanssen <[email protected]>: >>> >>>> >>>> >>>> Den 08.02.2023 02:38, skrev Andrew Randrianasulu: >>>> >>>> >>>> >>>> ср, 8 февр. 2023 г., 04:08 Terje J. Hanssen <[email protected]>: >>>> >>>>> >>>>> >>>>> Den 08.02.2023 00:52, skrev Andrew Randrianasulu: >>>>> >>>>> >>>>> >>>>> ср, 8 февр. 2023 г., 01:35 Terje J. Hanssen via Cin < >>>>> [email protected]>: >>>>> >>>>>> >>>>>> >>>>>> 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/[email protected]/#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@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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