Fail to play svo file with zedsrc

[douo]

gst-launch-1.0 -v zedsrc svo-file-path=/tmp/7y_2.2_HD720_SN21958301_16-13-33.svo ! autovideoconvert ! queue ! fpsdisplaysink video-sink=nveglglessink

Output:

Setting pipeline to PAUSED ...

Using winsys: x11
Setting depth_mode to ULTRA
Failed to query video capabilities: Inappropriate ioctl for device
[NvV4l2Elements] failed to open
Caught SIGSEGV
Error in VIDIOC_REQBUFS at output planeError in VIDIOC_REQBUFS at output plane#0  0x0000007fa40e9d5c in __waitpid (pid=<optimized out>, stat_loc=0x7fc5fe56b4, options=<optimized out>) at ../sysdeps/unix/sysv/linux/waitpid.c:30
#1  0x0000007fa41252a0 in g_on_error_stack_trace ()
#2  0x0000005593f39c3c in  ()
#3  0x0000007fc5fe6ab0 in  ()
Spinning.  Please run 'gdb gst-launch-1.0 5773' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.

gdb:

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Reading symbols from gst-launch-1.0...(no debugging symbols found)...done.
Attaching to program: /usr/bin/gst-launch-1.0, process 5773
[New LWP 5777]
[New LWP 5778]
[New LWP 5779]
[New LWP 5780]
[New LWP 5781]
[New LWP 5782]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
0x0000007fa40e95fc in __GI___nanosleep (requested_time=0x7fc5fe56c8, remaining=0x7fc5fe56d8) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
28  ../sysdeps/unix/sysv/linux/nanosleep.c: No such file or directory.
(gdb)

[Myzhar]

Hi @douo Can you provide us with more information? Operating System Device type GPU ZED SDK version Does your SVO play correctly using ZED_Explorer or ZED_Depth_Viewer?

[douo]

Hi @Myzhar Open with ZED_Explorer & ZED_Depth_Viewer seem report same error:

[NvV4l2Elements] failed to open
[1]    3289 segmentation fault (core dumped)  ZED_Explorer

ZED_Diagnostic report everything is ok.

I using ZED2 on jetson:

NVIDIA Jetson AGX Xavier [16GB] - Jetpack 4.4.1 [L4T 32.4.4]

 - Up Time:        2 days 7:27:6                                                                                                                                             Version: 3.0.2
 - Jetpack:        4.4.1 [L4T 32.4.4]                                                                                                                                         Author: Raffaello Bonghi
 - Board:                                                                                                                                                                     e-mail: raffaello@rnext.it
   * Type:           AGX Xavier [16GB]
   * SOC Family:     tegra194     ID: 25
   * Module:         P2888-0001   Board: P2822-0000
   * Code Name:      galen
   * Cuda ARCH:      7.2
   * Serial Number:  1**********
 - Libraries:                                                                                                                                                            - Hostname:    tx-desktop
   * CUDA:         10.2.89                                                                                                                                               - Interfaces:
   * OpenCV:       4.5.1  compiled CUDA: YES                                                                                                                               * eth0:      192.168.50.228
   * TensorRT:     7.1.3.0
   * VPI:          0.4.4
   * VisionWorks:  1.6.0.501
   * Vulkan:       1.2.70
   * cuDNN:        8.0.0.180

gstreamer version: GStreamer 1.14.5

ZED SDK Version: Stereolabs ZED SDK Version : 3.3.3

[Myzhar]

So the problem is with the SVO file. How long is it? Have you tried it on other machines?

[douo]

This is not a problem with SVO, it can be played well on other devices. I used ZED_SVO_Editor to repair, but it still doesn't work. It seems to be an environmental issue.

[douo]

After many attempts, the problem became clearer:

• ZED cannot encode or decode stream using h264/h265 encoding. Always report: [NvV4l2Elements] cannot be opened
• ZED can record or play lossless svo file.
• gstreamer can do encode with nvv4l2*enc

[douo]

Hi @Myzhar , Can you provide any working example for svo playback

[Myzhar]

SVO playback is natively supported, the pipeline that you submitted should work: gst-launch-1.0 -v zedsrc svo-file-path=/tmp/7y_2.2_HD720_SN21958301_16-13-33.svo ! autovideoconvert ! queue ! fpsdisplaysink have you tried removing the video-sink=nveglglessink part. You can also try using ximagesink instead of fpsdisplaysink

[douo]

After re-flash and re-setup the environment again and again. I finally figure out this issue cause by the package libv4l-dev:arm64 (1.14.2-1)

sudo apt  install libv4l-dev

ZED_Explorer xxx.svo throw this exception:

[NvV4l2Elements] failed to open

I remove libv4l-dev and run ZED_Explorer again:

FAILURE : Didn't manage to open svo file -- UNSUPPORTED
FAILURE : Didn't manage to open svo file -- UNSUPPORTED

Then I re-run the script ZED_SDK_Tegra_JP44_v3.3.3.run to reinstall sdk, Problem gone!!

Seem ZED SDK is incompatible with libv4l-dev?

[Myzhar]

@obraun-sl do you know something more about this problem with the Jetson Xavier AGX?

[aemarkov]

Faced with same issue with TX, JetPack 4.4.1. Several days ago I tested, and it worked. I didn't change zed software or jetpack. Strange.

[obraun-sl]

The hardware encoder/decoder on jetson is controlled by v4l2 as a ioctl device (when H264/5 SVO is recorded or played). The v4l2 library has been modified by NVIDIA to add more control access to the encoding/decoding parameters. Maybe installing libv4l-dev is overwritting the existing libv4l2 installed during jetpack flash, but that would be surprising. I tried to reproduce on my AGX JP4.4.1 by installing libv4l-dev, but ZED Explorer was still playing H264 files correctly. Maybe the issue was somewhere else than the libv4l-dev package

[aemarkov]

I reinstalled JetPack 4.4.1 on TX2 and ZED was working. I didn't run apt upgrade to prevent libraries update. However, one time ZED svo playing was broken again.

I've installed ros-melodic-base-ros and several other packages and ZED was still working.

After last known state when ZED worked and before I realized that it broken, I installed several packages: libatlas-base-dev, libsuitesparse-dev, libyaml-cpp-dev, libgoogle-glog-dev, libgflags-dev, autogen, autoconf, libtool, libprotobuf-dev, protobuf-compiler, ros-melodic-vision-opencv, libopencv-dev=3.2.0+dfsg-4ubuntu0.1, ros-melodic-camera-info-mamanger, ros-melodic-perception.

When I realized that zed was broken, i tried to uninstall ros-melodic-perception, ros-melodic-vision-opencv, cv_bridge, opencv 3.2 and install back opencv 4.x. But it didn't help.

Then I tried a very dirty hack: just copy /bin, /sbin, /usr, /lib from the rootfs from the NVidia SDK Manager JetPack installation to the Jetson. I used rsync, so existing files should be replaced with original ones, but files which I installed later, should be kept. Strange, but this didn't help too.

P.S. I also tried to copy only v4l .so libraries before I reflash jetson first time, but didn't help.

[XuErShuo]

After re-flash and re-setup the environment again and again. I finally figure out this issue cause by the package libv4l-dev:arm64 (1.14.2-1)

sudo apt  install libv4l-dev

ZED_Explorer xxx.svo throw this exception:

[NvV4l2Elements] failed to open

I remove libv4l-dev and run ZED_Explorer again:

FAILURE : Didn't manage to open svo file -- UNSUPPORTED
FAILURE : Didn't manage to open svo file -- UNSUPPORTED

Then I re-run the script ZED_SDK_Tegra_JP44_v3.3.3.run to reinstall sdk, Problem gone!!

Seem ZED SDK is incompatible with libv4l-dev?

Thanks for helping me solve the problem

[Myzhar]

It's a known problem. When you install a new version of the ZED SDK a warning message is indeed displayed