save_to_ply / export_to ply not giving always the same output

[pelluchon]

Hi,

I am saving an output of a bag video into ply using the code below. If i am running several times the script, I do not have the same export every time.

`pipe = rs.pipeline()
cfg = rs.config()
cfg.enable_device_from_file(input_rs)
profile = pipe.start(cfg)
pc = rs.pointcloud()
colorizer = rs.colorizer()

while True:
frameset = pipe.wait_for_frames()
align = rs.align(rs.stream.color)
frameset = align.process(frameset)
colorized = colorizer.process(frameset)
color_frame = frameset.get_color_frame()
depth_frame = frameset.get_depth_frame()
pc.map_to(color_frame)
ply = rs.save_to_ply(inter_output)
ply.set_option(rs.save_to_ply.option_ply_binary, False)
ply.set_option(rs.save_to_ply.option_ply_normals, False)
ply.set_option(rs.save_to_ply.option_ignore_color, False)
ply.set_option(rs.save_to_ply.option_ply_threshold, True)
ply.process(frameset)`

I have tried with save_to_ply and export_to ply using the code below for export_to_ply.

points = pc.calculate(aligned_depth_frame) points.export_to_ply(inter_output, color_frame)

Does anyone had the same issue and if so how to solve it ?

Many thanks

|---------------------------------|------------------------------------------- |
| Camera Model | D435i |
| Firmware Version | 2.41.02657 |
| Operating System & Version | Win 10 |
| Platform | PC |
| Language | python |

[MartyG-RealSense]

Hi @pelluchon As a first step, I would recommend adding the term repeat_playback=false to the brackets of the cfg.enable_device_from_file instruction. This will prevent the bag file from looping around to the start when it reaches the final frame during playback.

#7067 (comment)

The cfg.enable_device_from_file line of your script would therefore look like this after the addition:

cfg.enable_device_from_file(input_rs, repeat_playback=false)

[pelluchon]

Hi @MartyG-RealSense, Thank you for the quick answer.

I did try and it slighly better. If before, I had one different over 3, now it is more one over 5. That with save_to_ply, with export_to_ply it does not change the issue.

Any other ways ?

Many Thanks

[MartyG-RealSense]

Is there any further improvement if you add two lines below your pipe start instruction to configure set_real_time for playback as false.

profile = pipe.start(cfg)
playback = profile.get_device().as_playback()
playback.set_real_time(False)

[pelluchon]

yes, it has solved the issue. Many Thanks

[MartyG-RealSense]

You are very welcome - that's great news. Thanks for the update!

[MartyG-RealSense]

Case closed due to solution achieved and no further comments received.