!$final_v2e_command gives error

[yazidoudou18]

v2e -i /content/v2e_tutorial_video.avi -o /content/v2e-output --overwrite --unique_output_folder false --dvs_h5 events.h5 --dvs_aedat2 None --dvs_text None --no_preview --dvs_exposure duration .033 --input_frame_rate 30 --input_slowmotion_factor 1 --disable_slomo --auto_timestamp_resolution false --pos_thres 0.2 --neg_thres 0.2 --sigma_thres 0.03 --cutoff_hz 30 --leak_rate_hz 0.1 --shot_noise_rate_hz 5 --dvs346

ERROR:v2ecore.emulator:Output file exception "Unable to create file (unable to lock file, errno = 11, error message = 'Resource temporarily unavailable')" (maybe you need to specify a supported DVS camera type?) Traceback (most recent call last): File "/usr/local/bin/v2e", line 8, in sys.exit(main()) File "/usr/local/bin/v2e.py", line 530, in main emulator = EventEmulator( File "/usr/local/lib/python3.8/dist-packages/v2ecore/emulator.py", line 301, in init raise e File "/usr/local/lib/python3.8/dist-packages/v2ecore/emulator.py", line 274, in init self.dvs_h5 = h5py.File(path, "w") File "/usr/local/lib/python3.8/dist-packages/h5py/_hl/files.py", line 424, in init fid = make_fid(name, mode, userblock_size, File "/usr/local/lib/python3.8/dist-packages/h5py/_hl/files.py", line 196, in make_fid fid = h5f.create(name, h5f.ACC_TRUNC, fapl=fapl, fcpl=fcpl) File "h5py/_objects.pyx", line 54, in h5py._objects.with_phil.wrapper File "h5py/_objects.pyx", line 55, in h5py._objects.with_phil.wrapper File "h5py/h5f.pyx", line 116, in h5py.h5f.create OSError: Unable to create file (unable to lock file, errno = 11, error message = 'Resource temporarily unavailable')

[tobidelbruck]

I haven't seen that error but do not ever use h5 output. Does it work with aedat output format?

[yazidoudou18]

Thanks for responding. I just tried the following v2e command and still gives error.

The Final v2e command: v2e -i /content/v2e_tutorial_video.avi -o /content/v2e-output --overwrite --unique_output_folder false --dvs_h5 events.aedat --dvs_aedat2 None --dvs_text None --no_preview --dvs_exposure duration .033 --input_frame_rate 30 --input_slowmotion_factor 1 --disable_slomo --auto_timestamp_resolution false --pos_thres 0.2 --neg_thres 0.2 --sigma_thres 0.03 --cutoff_hz 30 --leak_rate_hz 0.1 --shot_noise_rate_hz 5 --dvs346

ERROR:v2ecore.emulator:Output file exception "Unable to create file (unable to lock file, errno = 11, error message = 'Resource temporarily unavailable')" (maybe you need to specify a supported DVS camera type?) Traceback (most recent call last): File "/usr/local/bin/v2e", line 8, in sys.exit(main()) File "/usr/local/bin/v2e.py", line 530, in main emulator = EventEmulator( File "/usr/local/lib/python3.8/dist-packages/v2ecore/emulator.py", line 301, in init raise e File "/usr/local/lib/python3.8/dist-packages/v2ecore/emulator.py", line 274, in init self.dvs_h5 = h5py.File(path, "w") File "/usr/local/lib/python3.8/dist-packages/h5py/_hl/files.py", line 424, in init fid = make_fid(name, mode, userblock_size, File "/usr/local/lib/python3.8/dist-packages/h5py/_hl/files.py", line 196, in make_fid fid = h5f.create(name, h5f.ACC_TRUNC, fapl=fapl, fcpl=fcpl) File "h5py/_objects.pyx", line 54, in h5py._objects.with_phil.wrapper File "h5py/_objects.pyx", line 55, in h5py._objects.with_phil.wrapper File "h5py/h5f.pyx", line 116, in h5py.h5f.create OSError: Unable to create file (unable to lock file, errno = 11, error message = 'Resource temporarily unavailable')

[duguyue100]

@yazidoudou18 feels like the HDF5 is trying to create a file but it couldn't.

Can you try a dummy example something like

import h5py

file = h5py.File("my_new_file", "w")

and see if this triggers any errors. Also, the path of the result folder, does it allow you to write files?

[yazidoudou18]

@duguyue100 The example was able to produce a file without triggering any errors. However, the 'final_v2e_command' was not able to output any files and caused the same errors.

[tobidelbruck]

I can try to reproduce it this weekend, but I don't have v2e env setup right now. We are fighting paper deadline here.

Does the aedat and text output work correctly for you? Just turn off h5 output to check and turn on aedat and text outputs. Also you should probably not specify --no_preview (or whatever disables video preview) to check the output visually.

[yazidoudou18]

Thank you, Tobi. I have not yet set up the v2e environment. All the errors I have encountered so far are based on using v2e in Google Colab.

[tobidelbruck]

You're welcome. I didn't have a chance to try anything with v2e yet. I hope to find some time this weekend. I think putting a breakpoint there would probably show the problem in 5 minutes, but I think colab is not good for this kind of debugging? I bet it is just some restriction in colab about creating files?

Does aedat2 and text output work in colab? The paths are probably derived by the same chunk of code.

[tobidelbruck]

I just tried the below command and it run to completion with the significant warning that the IIR lowpass filter is definitely not accurate for default cutoff of 300 Hz

v2e -i input/tennis.mov -o output/tennis --overwrite --unique_output_folder false --dvs_h5 events.h5 --dvs_aedat2 None --dvs_text None --no_preview --dvs_exposure duration .033 --input_frame_rate 30 --input_slowmotion_factor 1 --disable_slomo --auto_timestamp_resolution false --pos_thres 0.2 --neg_thres 0.2 --sigma_thres 0.03 --cutoff_hz 30 --leak_rate_hz 0.1 --shot_noise_rate_hz 5 --dvs346

[tobidelbruck]

Note that this was in the cloned local v2e env, not the colab workspace.