[Cin] CinGG Analog S-Video to Digital HDMI converter + ms2130 UHD HDMI-USB3 Capture card
Andrew Randrianasulu
randrianasulu at gmail.com
Sun May 4 05:49:44 CEST 2025
вс, 4 мая 2025 г., 01:37 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
> Den 03.05.2025 13:00, skrev Terje J. Hanssen:
>
>
> Den 02.05.2025 21:42, skrev Andrew Randrianasulu:
>
>
>
> пт, 2 мая 2025 г., 22:37 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>> https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg05748.html
>>
>> I contine this new thread with an short extract from the long growing
>> [Cin] ms2130 HDMI-USB3 UHD capture card - not quite as expected?
>>
>> But shouldn't a 422 and not a 420 output format be created?
>>
>> >> it seems in some cases ffmpeg not geared towards preserving most
>> information, just picks up most commonly defined/first pixel format.
>> >> Try mpeg2video as output codec, and/or specify pixel format (pix_fmt)
>> more explicitly before output's filename?
>>
>> >>> Could you possibly examplify the latter?
>>
>> >>>> I think I just theorized ffmpeg may try to get some info from alsa
>> device file directly, as it tries with /dev/video. But I never >>>> tried
>> this way, so I can be totally wrong!
>>
>> -------------------------------
>>
>> Instead of 50i (pal interlaced fields), I try 50 fps (progressive) that
>> at least is a pal frequence.
>>
>> And yes, it seems from the output that ffmpeg uses mpeg1video as default
>> output codec.
>>
>> Furter I try to combine the current line
>>
>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576
>> -framerate 25 -t 20 -i /dev/video2 out-720x576_ms2130.mpeg
>>
>>
>> with and utilize the syntax developed 2021 for "Blu-ray compliant MPEG-2
>> SD video with LPCM audio"
>>
>> ffmpeg -i dv28.dv -c:v mpeg2video -refs 1 -bf 2 -b:v 25M -maxrate 25M
>> -minrate 25M -bufsize 45M -muxrate 45M -dc 10 -c:a pcm_s16be -f vob
>> dv28.mpg
>>
>> and for the current ongoing "DVD compliant MPEG-2 Video and PCM Audio"
>>
>> ffmpeg -hide_banner -i dv01.dv -c:v mpeg2video -refs 1 -bf 2 -b:v 8M
>> -maxrate 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f
>> vob -flags +ilme+ildct dv01.mpg
>>
>> to first
>>
>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576
>> -framerate 50 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate 8M -minrate 8M
>> -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20 -i /dev/video2
>> 720x576_50p_ms2130.mpg
>> Option b:v (video bitrate (please use -b:v)) cannot be applied to input
>> url /dev/video2 -- you are trying to apply an input option to an output
>> file or vice versa. Move this option before the file it belongs to.
>> Error parsing options for input file /dev/video2.
>> Error opening input files: Invalid argument
>>
>>
>> and next revised with no output. That is I need help to debug the syntax
>> error:
>>
>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576
>> -framerate 50 -i /dev/video2 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate
>> 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20
>> 720x576_50p_ms2130.mpg
>> [video4linux2,v4l2 @ 0x55db770ef9c0] Dequeued v4l2 buffer contains
>> corrupted data (0 bytes).
>> Input #0, video4linux2,v4l2, from '/dev/video2':
>> Duration: N/A, start: 0.000000, bitrate: 331776 kb/s
>> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
>> 331776 kb/s, 50 fps, 50 tbr, 1000k tbn
>> Stream mapping:
>> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
>> Press [q] to stop, [?] for help
>> [video4linux2,v4l2 @ 0x55db770ef9c0] Dequeued v4l2 buffer contains
>> corrupted data (0 bytes).
>> Last message repeated 30 times
>> [mpeg2video @ 0x55db77114f00] Warning vbv_delay will be set to 0xFFFF
>> (=VBR) as the specified vbv buffer is too large for the given bitrate!
>> Output #0, vob, to '720x576_50p_ms2130.mpg':
>> Metadata:
>> encoder : Lavf59.27.100
>> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive),
>> 720x576, q=2-31, 8000 kb/s, 50 fps, 90k tbn
>> Metadata:
>> encoder : Lavc59.37.100 mpeg2video
>> Side data:
>> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size:
>> 20000000 vbv_delay: N/A
>> frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A
>> speed= 0x
>> video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
>> muxing overhead: unknown
>> Output file is empty, nothing was encoded (check -ss / -t / -frames
>> parameters if used)
>>
>>
> well, I think framerate still 25 for 50i stream ....
>
> can you re-check last line with framerate parameter removed or changed
> back to 25?
>
>
> Ok, as this old post by my mistake already has been forwarded to the list
> and replied, I will follow it up later today, but need to rig rig up my
> camcorder and devices
>
>
> Finally ready, I had to recall a lot since 2023.
>
> ls /dev/video*
> /dev/video0 /dev/video1 /dev/video2 /dev/video3
>
>
> for i in /dev/video*; do echo "$i"; udevadm info --query=all
> --attribute-walk --name=$i | grep -E "name"; done
> /dev/video0
> ATTR{name}=="USB3.0 UHD: USB3.0 UHD"
> /dev/video1
> ATTR{name}=="USB3.0 UHD: USB3.0 UHD"
> /dev/video2
> ATTR{name}=="USB 2.0 Camera: HD 720P Webcam"
> /dev/video3
> ATTR{name}=="USB 2.0 Camera: HD 720P Webcam"
>
>
> v4l2-ctl --list-devices
> USB 2.0 Camera: HD 720P Webcam (usb-0000:00:14.0-11.2):
> /dev/video2
> /dev/video3
> /dev/media1
>
> USB3.0 UHD: USB3.0 UHD (usb-0000:00:14.0-3):
> /dev/video0
> /dev/video1
> /dev/media0
>
> As seen the HDMI-USB3 capture card + the S-Video/HDMI converter (with the
> analog S-video camcorder) is now on /dev/video0
> while the USB2 webcam is on /dev/video2
>
but what is on video1 ?
it seems that whole thing fail at
Dequeued v4l2 buffer contains corrupted data (0 bytes).
Does anything else (guvcview, vlc ..) process video stream this usb3 UHD
device?
mplayer tv:// -demuxer tv ?
> ffplay can playback the S-video camcorder's imaging stream
>
> Default without framerate specified:
>
> ffplay -hide_banner -f video4linux2 /dev/video0
> [video4linux2,v4l2 @ 0x7fe3c0000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Input #0, video4linux2,v4l2, from '/dev/video0':
> Duration: N/A, start: 0.000000, bitrate: 398131 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
> 398131 kb/s, 60 fps, 60 tbr, 1000k tbn
> [video4linux2,v4l2 @ 0x7fe3c0000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Last message repeated 30 times
> ^Cterje at localhost:~> d= 2 aq= 0KB vq= 0KB sq= 0B
>
> With 25 fps specified:
>
> ffplay -hide_banner -f video4linux2 -framerate 25 /dev/video0
> [video4linux2,v4l2 @ 0x7f7fa8000c80] The driver changed the time per frame
> from 1/25 to 1/30
> [video4linux2,v4l2 @ 0x7f7fa8000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Input #0, video4linux2,v4l2, from '/dev/video0':
> Duration: N/A, start: 0.000000, bitrate: 199065 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
> 199065 kb/s, 30 fps, 30 tbr, 1000k tbn
> [video4linux2,v4l2 @ 0x7f7fa8000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Last message repeated 30 times
> ^Cterje at localhost:~> d= 0 aq= 0KB vq= 0KB sq= 0B
>
> With 30 fps specified:
>
> ffplay -hide_banner -f video4linux2 -framerate 30 /dev/video0
> [video4linux2,v4l2 @ 0x7f3878000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Input #0, video4linux2,v4l2, from '/dev/video0':
> Duration: N/A, start: 0.000000, bitrate: 199065 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
> 199065 kb/s, 30 fps, 30 tbr, 1000k tbn
> [video4linux2,v4l2 @ 0x7f3878000c80] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Last message repeated 30 times
>
> -----------------
>
> But empty output file with ffmpeg:
>
> With 25 fps specified
>
> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576
> -framerate 25 -i /dev/video0 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate
> 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20
> 720x576_25fps_ms2130.mpg
> [video4linux2,v4l2 @ 0x560fe5926740] The driver changed the time per frame
> from 1/25 to 1/30
> [video4linux2,v4l2 @ 0x560fe5926740] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Input #0, video4linux2,v4l2, from '/dev/video0':
> Duration: N/A, start: 0.000000, bitrate: 199065 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
> 199065 kb/s, 30 fps, 30 tbr, 1000k tbn
> Stream mapping:
> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
> Press [q] to stop, [?] for help
> [video4linux2,v4l2 @ 0x560fe5926740] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Last message repeated 30 times
> [mpeg2video @ 0x560fe5927140] Warning vbv_delay will be set to 0xFFFF
> (=VBR) as the specified vbv buffer is too large for the given bitrate!
> Output #0, vob, to '720x576_25fps_ms2130.mpg':
> Metadata:
> encoder : Lavf61.7.100
> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive),
> 720x576, q=2-31, 8000 kb/s, 30 fps, 90k tbn
> Metadata:
> encoder : Lavc61.19.101 mpeg2video
> Side data:
> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size:
> 20000000 vbv_delay: N/A
> [out#0/vob @ 0x560fe5928d00] video:0KiB audio:0KiB subtitle:0KiB other
> streams:0KiB global headers:0KiB muxing overhead: unknown
> [out#0/vob @ 0x560fe5928d00] Output file is empty, nothing was
> encoded(check -ss / -t / -frames parameters if used)
> frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A
> speed=N/A
>
>
> Without framerate specified:
>
> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 -i
> /dev/video0 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate 8M -minrate 8M
> -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20
> 720x576_ms2130.mpg
> [video4linux2,v4l2 @ 0x55e707fd8740] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Input #0, video4linux2,v4l2, from '/dev/video0':
> Duration: N/A, start: 0.000000, bitrate: 398131 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576,
> 398131 kb/s, 60 fps, 60 tbr, 1000k tbn
> Stream mapping:
> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
> Press [q] to stop, [?] for help
> [video4linux2,v4l2 @ 0x55e707fd8740] Dequeued v4l2 buffer contains
> corrupted data (0 bytes).
> Last message repeated 30 times
> [mpeg2video @ 0x55e707fd9140] Warning vbv_delay will be set to 0xFFFF
> (=VBR) as the specified vbv buffer is too large for the given bitrate!
> Output #0, vob, to '720x576_ms2130.mpg':
> Metadata:
> encoder : Lavf61.7.100
> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive),
> 720x576, q=2-31, 8000 kb/s, 60 fps, 90k tbn
> Metadata:
> encoder : Lavc61.19.101 mpeg2video
> Side data:
> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size:
> 20000000 vbv_delay: N/A
> [out#0/vob @ 0x55e707fdacc0] video:0KiB audio:0KiB subtitle:0KiB other
> streams:0KiB global headers:0KiB muxing overhead: unknown
> [out#0/vob @ 0x55e707fdacc0] Output file is empty, nothing was
> encoded(check -ss / -t / -frames parameters if used)
> frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A
> speed=N/A
>
> --------------
>
> On the other hand, capturing with the USB webcam creates output file
>
> Here with 50 fps specified
>
> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576
> -framerate 50 -i /dev/video2 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate
> 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20
> 720x576_50p_ms2130.mpg
> [video4linux2,v4l2 @ 0x56418fd52740] The V4L2 driver changed the video
> from 720x576 to 800x600
> [video4linux2,v4l2 @ 0x56418fd52740] The driver changed the time per frame
> from 1/50 to 1/20
> Input #0, video4linux2,v4l2, from '/dev/video2':
> Duration: N/A, start: 1969.283514, bitrate: 153600 kb/s
> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 800x600,
> 153600 kb/s, 20 fps, 20 tbr, 1000k tbn
> Stream mapping:
> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
> Press [q] to stop, [?] for help
> [mpeg2video @ 0x56418fd53200] Warning vbv_delay will be set to 0xFFFF
> (=VBR) as the specified vbv buffer is too large for the given bitrate!
> Output #0, vob, to '720x576_50p_ms2130.mpg':
> Metadata:
> encoder : Lavf61.7.100
> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive),
> 800x600, q=2-31, 8000 kb/s, 20 fps, 90k tbn
> Metadata:
> encoder : Lavc61.19.101 mpeg2video
> Side data:
> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size:
> 20000000 vbv_delay: N/A
> [out#0/vob @ 0x56418fd54e00] video:13281KiB audio:0KiB subtitle:0KiB other
> streams:0KiB global headers:0KiB muxing overhead: 1.230734%
> frame= 284 fps= 22 q=2.0 Lsize= 13444KiB time=00:00:14.15
> bitrate=7783.3kbits/s dup=97 drop=0 speed=1.08x
> Exiting normally, received signal 2.
>
> ffprobe -hide_banner 720x576_50p_ms2130.mpg
> Input #0, mpeg, from '720x576_50p_ms2130.mpg':
> Duration: 00:00:14.20, start: 0.550000, bitrate: 7755 kb/s
> Stream #0:0[0x1e0]: Video: mpeg2video (4:2:2), yuv422p(tv, progressive),
> 800x600 [SAR 1:1 DAR 4:3], 20 fps, 20 tbr, 90k tbn
> Side data:
> cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 20004864
> vbv_delay: N/A
>
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