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mipops / dvrescue

Archivist-made software that supports data migration from DV tapes into digital files suitable for long-term preservation. Snapshot daily builds are at https://mediaarea.net/download/snapshots/binary/dvrescue/.
BSD 3-Clause "New" or "Revised" License
93 stars 20 forks source link

dvrescue vs sony9pin deckcontrol speed #771

Open dericed opened 10 months ago

dericed commented 10 months ago

with sony9pin, the deck control is nearly instantaneous:

$ sony9pin 2 p
$ sony9pin 2 s

but with dvrescue the deck control has a 5 second lag between sending the command and seeing the same result:

$  /usr/local/bin/dvrescue -y device://84:160a010c:00000000 --control "/dev/tty.RS422 Deck Control" -cmd play
$  /usr/local/bin/dvrescue -y device://84:160a010c:00000000 --control "/dev/tty.RS422 Deck Control" -cmd stop
g-maxime commented 3 months ago

Unable to reproduce 

time ./dvrescue --control "/dev/tty.RS422 Deck Control" --cmd play && sleep 5 && time ./dvrescue --control "/dev/tty.RS422 Deck Control" --cmd stop

real    0m0.204s
user    0m0.084s
sys 0m0.027s

real    0m0.200s
user    0m0.085s
sys 0m0.025s
dericed commented 3 months ago

testing 

$ dvrescue --version
DVRescue v.22.12.20240619 (MediaInfoLib v.24.05) by MIPoPS.

$ time dvrescue --control "/dev/tty.usbserial-A10KXF88" --cmd play && sleep 5 && time dvrescue --control "/dev/tty.usbserial-A10KXF88" --cmd stop
2024-06-19 15:09:48.507 dvrescue[11169:150589] WARNING: AVCaptureDeviceTypeExternal is deprecated for Continuity Cameras. Please use AVCaptureDeviceTypeContinuityCamera and add NSCameraUseContinuityCameraDeviceType to your Info.plist.

real    0m0.405s
user    0m0.077s
sys 0m0.087s
2024-06-19 15:09:53.879 dvrescue[11176:150744] WARNING: AVCaptureDeviceTypeExternal is deprecated for Continuity Cameras. Please use AVCaptureDeviceTypeContinuityCamera and add NSCameraUseContinuityCameraDeviceType to your Info.plist.

real    0m0.357s
user    0m0.074s
sys 0m0.079s

$ time dvrescue --control "/dev/tty.RS422 Deck Control" --cmd play && sleep 5 && time dvrescue --control "/dev/tty.RS422 Deck Control" --cmd stop
2024-06-19 15:10:14.877 dvrescue[11206:151192] WARNING: AVCaptureDeviceTypeExternal is deprecated for Continuity Cameras. Please use AVCaptureDeviceTypeContinuityCamera and add NSCameraUseContinuityCameraDeviceType to your Info.plist.

real    0m0.375s
user    0m0.072s
sys 0m0.084s
2024-06-19 15:10:21.271 dvrescue[11211:151272] WARNING: AVCaptureDeviceTypeExternal is deprecated for Continuity Cameras. Please use AVCaptureDeviceTypeContinuityCamera and add NSCameraUseContinuityCameraDeviceType to your Info.plist.

real    0m1.383s
user    0m0.083s
sys 0m0.084s

and again with sony9pin

$ time sony9pin 8 p && sleep 5 && time sony9pin 8 s

real    0m0.113s
user    0m0.027s
sys 0m0.024s

real    0m0.115s
user    0m0.029s
sys 0m0.024s

maybe close enough?