RobertTheSable

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  • in reply to: OSSC + Puteltal Capture Card issues on Linux #42120
    RobertTheSable
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      The card is obviously set to capture 1280×720. Either change that value, or use a program like OBS to scale the video signal to 1280×720 beforehand.

      I would except the card doesn’t present the option to select a higher resolution with 960p input.

      Here are the resolutions the card reports are available in 960p mode:

      $ v4l2-ctl --list-formats-ext
      ioctl: VIDIOC_ENUM_FMT
              Type: Video Capture
      
              [0]: 'MJPG' (Motion-JPEG, compressed)
                      Size: Discrete 1280x720
                              Interval: Discrete 0.017s (60.000 fps)
                              Interval: Discrete 0.033s (30.000 fps)
      

      Compare this to what’s reported with 1080p input:

      $ v4l2-ctl --list-formats-ext                                              
      ioctl: VIDIOC_ENUM_FMT
              Type: Video Capture
      
              [0]: 'MJPG' (Motion-JPEG, compressed)
                      Size: Discrete 1920x1080
                              Interval: Discrete 0.017s (60.000 fps)
                              Interval: Discrete 0.033s (30.000 fps)
                      Size: Discrete 1280x720
                              Interval: Discrete 0.017s (60.000 fps)
                              Interval: Discrete 0.033s (30.000 fps)
      

      And 480p:

      $ v4l2-ctl --list-formats-ext
      ioctl: VIDIOC_ENUM_FMT
              Type: Video Capture
      
              [0]: 'MJPG' (Motion-JPEG, compressed)
                      Size: Discrete 720x480
                              Interval: Discrete 0.017s (60.000 fps)
                              Interval: Discrete 0.033s (30.000 fps)
      

      These are the same options OBS shows.

      I tested a bit passing the card to a Windows VM and saw the same behavior, so I believe the issue is on the hardware level.

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