# Unable find avdec\_h264 after intsalled gstreamer plug-ins into Jetson AGX Orin **URL:** \ **Category:** Jetson AGX Orin\ **Tags:** gstreamer\ **Created:** [August 31, 2022, 4:44am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575 "2022-08-31T04:44:15Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![boon.hai.ng](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@boon.hai.ng](https://forums.developer.nvidia.com/u/boon.hai.ng)\ **Post date:** [August 31, 2022, 4:44am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/1 "2022-08-31T04:44:15Z")
Found avdec\_h264 (H264 decoder) not install on Jetson AGX Orin. is it not supported? Here is my Jerson AGX Orin system info generated from command line “jetson\_release” $ jetson\_release - NVIDIA Jetson UNKNOWN - Jetpack UNKNOWN [L4T 35.1.0] - NV Power Mode: MAXN - Type: 0 - jetson\_stats.service: active - Libraries: - CUDA: NOT\_INSTALLED - cuDNN: 8.4.1.50 - TensorRT: 8.4.1.5 - Visionworks: NOT\_INSTALLED - OpenCV: 4.5.4 compiled CUDA: NO - VPI: ii libnvvpi2 2.1.6 arm64 NVIDIA Vision Programming Interface library - Vulkan: 1.3.203 Below here is use gst inspector to check the decoder feature on Jetson AGX Orin: $ gst-inspect-1.0 | grep avdec $ gst-inspect-1.0 | grep h264 uvch264: uvch264src: UVC H264 Source uvch264: uvch264mjpgdemux: UVC H264 MJPG Demuxer videoparsersbad: h264parse: H.264 parser rtp: rtph264pay: RTP H264 payloader rtp: rtph264depay: RTP H264 depayloader typefindfunctions: video/x-h264: h264, x264, 264 nvvideo4linux2: nvv4l2h264enc: V4L2 H.264 Encoder $ gst-inspect-1.0 | grep 264 uvch264: uvch264src: UVC H264 Source uvch264: uvch264mjpgdemux: UVC H264 MJPG Demuxer videoparsersbad: h264parse: H.264 parser rtp: rtph264pay: RTP H264 payloader rtp: rtph264depay: RTP H264 depayloader typefindfunctions: video/x-h264: h264, x264, 264 x264: x264enc: x264enc nvvideo4linux2: nvv4l2h264enc: V4L2 H.264 Encoder ---
**Author:** ![DaneLLL](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/danelll/32/14043_2.png) [@DaneLLL](https://forums.developer.nvidia.com/u/DaneLLL)\ **Post date:** [August 31, 2022, 5:16am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/3 "2022-08-31T05:16:07Z")
Hi, We can see the plugin on Jetpack 5.0.2: ```auto nvidia@ubuntu:~$ gst-inspect-1.0 avdec_h264 Factory Details: Rank primary (256) Long-name libav H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 decod er Klass Codec/Decoder/Video Description libav h264 decoder Author Wim Taymans , Ronald Bultje , Edward Hervey Plugin Details: Name libav Description All libav codecs and formats (system install) Filename /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstlibav. so Version 1.16.2 License LGPL Source module gst-libav Binary package GStreamer libav Plugins (Ubuntu) Origin URL https://launchpad.net/distros/ubuntu/+source/gst-liba v1.0 GObject +----GInitiallyUnowned : ``` If you cannot see it, you may clean the cache and try again: > $ rm .cache/gstreamer-1.0/registry.aarch64.bin The _avdec\_h264_ plugin is software decoder. For better performance, suggest use hardware decoder _nvv4l2decoder_ plugin. ---
**Author:** ![Honey\_Patouceul](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/honey_patouceul/32/389777_2.png) [@Honey\_Patouceul](https://forums.developer.nvidia.com/u/Honey_Patouceul)\ **Post date:** [August 31, 2022, 7:43am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/4 "2022-08-31T07:43:48Z")
You may try installing ffmpeg, that would install the missing library `libgstlibav.so` ```auto sudo apt install ffmpeg ``` ---
**Author:** ![boon.hai.ng](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@boon.hai.ng](https://forums.developer.nvidia.com/u/boon.hai.ng)\ **Post date:** [August 31, 2022, 3:33pm UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/5 "2022-08-31T15:33:06Z")
still cannot find after clean, even re-install all the gstreamer plugins and ffmpeg, still unable to see avdec\_264 element detected. Also clean the .cache which advised by Danell, thank you. $ sudo apt install ffmpeg Reading package lists… Done Building dependency tree Reading state information… Done The following packages were automatically installed and are no longer required: apg cheese-common evince-common gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-totemplparser-1.0 gnome-control-center-faces gnome-online-accounts grilo-plugins-0.3-base libcolord-gtk1 libdjvulibre-text libdjvulibre21 libdmapsharing-3.0-2 libevdocument3-4 libgoa-backend-1.0-1 libgom-1.0-0 libgpod-common libgpod4 libgrilo-0.3-0 libgsound0 libgupnp-av-1.0-2 libgupnp-dlna-2.0-3 libkpathsea6 liblua5.3-0 libmediaart-2.0-0 librhythmbox-core10 librygel-core-2.6-2 librygel-db-2.6-2 librygel-renderer-2.6-2 librygel-server-2.6-2 libsgutils2-2 libspectre1 libsynctex2 libsysmetrics1 libtotem0 media-player-info mobile-broadband-provider-info network-manager-gnome python3-brlapi python3-louis python3-macaroonbakery python3-mako python3-markupsafe python3-protobuf python3-pyatspi python3-pymacaroons python3-rfc3339 python3-speechd rhythmbox-data rygel totem-common xbrlapi Use ‘sudo apt autoremove’ to remove them. Suggested packages: ffmpeg-doc The following NEW packages will be installed: ffmpeg 0 upgraded, 1 newly installed, 0 to remove and 117 not upgraded. Need to get 1,440 kB of archives. After this operation, 2,021 kB of additional disk space will be used. Get:1 [Index of /ubuntu-ports](http://ports.ubuntu.com/ubuntu-ports) focal-updates/universe arm64 ffmpeg arm64 7:4.2.7-0ubuntu0.1 [1,440 kB] Fetched 1,440 kB in 2s (898 kB/s) debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package ffmpeg. (Reading database … 163266 files and directories currently installed.) Preparing to unpack …/ffmpeg\_7%3a4.2.7-0ubuntu0.1\_arm64.deb … Unpacking ffmpeg (7:4.2.7-0ubuntu0.1) … Setting up ffmpeg (7:4.2.7-0ubuntu0.1) … Processing triggers for man-db (2.9.1-1) … $ rm .cache/gstreamer-1.0/registry.aarch64.bin $ gst-inspect-1.0 | grep h264 uvch264: uvch264src: UVC H264 Source uvch264: uvch264mjpgdemux: UVC H264 MJPG Demuxer nvvideo4linux2: nvv4l2h264enc: V4L2 H.264 Encoder videoparsersbad: h264parse: H.264 parser rtp: rtph264pay: RTP H264 payloader rtp: rtph264depay: RTP H264 depayloader typefindfunctions: video/x-h264: h264, x264, 264 cpmusr@pglunvd07:~$ gst-inspect-1.0 avdec\_h264 No such element or plugin ‘avdec\_h264’ cpmusr@pglunvd07:~$ uname -a Linux pglunvd07 5.10.104-tegra #1 SMP PREEMPT Wed Aug 10 20:17:07 PDT 2022 aarch64 aarch64 aarch64 GNU/Linux cpmusr@pglunvd07:~$ lsb\_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.4 LTS Release: 20.04 Codename: focal cpmusr@pglunvd07:~$ dpkg -l ffmpeg Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description ++±==============-==================-============-================================================================ ii ffmpeg 7:4.2.7-0ubuntu0.1 arm64 Tools for transcoding, streaming and playing of multimedia files ---
**Author:** ![Honey\_Patouceul](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/honey_patouceul/32/389777_2.png) [@Honey\_Patouceul](https://forums.developer.nvidia.com/u/Honey_Patouceul)\ **Post date:** [August 31, 2022, 4:00pm UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/6 "2022-08-31T16:00:33Z")
You may try: ```auto rm ~/.cache/gstreamer-1.0/registry.aarch64.bin LD_PRELOAD=/usr/lib/aarch64-linux-gnu/libgomp.so.1 gst-inspect-1.0 gst-inspect-1.0 | grep h264 ``` ---
**Author:** ![DaneLLL](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/danelll/32/14043_2.png) [@DaneLLL](https://forums.developer.nvidia.com/u/DaneLLL)\ **Post date:** [September 1, 2022, 2:36am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/7 "2022-09-01T02:36:24Z")
Hi, Is it possible to re-install Jetpack 5.0.2 through SDKManager and try again? ---
**Author:** ![boon.hai.ng](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@boon.hai.ng](https://forums.developer.nvidia.com/u/boon.hai.ng)\ **Post date:** [September 1, 2022, 3:16am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/8 "2022-09-01T03:16:17Z")
Hi Pat, it is working after have environment variable given on system. Would like to understand what is the problem on this? ---
**Author:** ![Honey\_Patouceul](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/honey_patouceul/32/389777_2.png) [@Honey\_Patouceul](https://forums.developer.nvidia.com/u/Honey_Patouceul)\ **Post date:** [September 1, 2022, 8:52am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/9 "2022-09-01T08:52:34Z")
From what I’ve understood, the GNU TLS2 model which aarch64 uses unfortunately eats from the same TLS preallocated pool as libraries that require static TLS like libgomp, where it is performance critical to have it as static TLS. So, preloading libgomp is a workaround. Note that it may depend on some packages installed in your system. I faced the same on a XavierNX but don’t need that with my Orin (both JP-5.0.2) ---
**Author:** ![boon.hai.ng](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@boon.hai.ng](https://forums.developer.nvidia.com/u/boon.hai.ng)\ **Post date:** [September 1, 2022, 9:39am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/10 "2022-09-01T09:39:53Z")
Thanks your solution and it’s resolve me issues, thank yo. ---
**Author:** ![fei.xu](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@fei.xu](https://forums.developer.nvidia.com/u/fei.xu)\ **Post date:** [September 19, 2022, 10:49pm UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/12 "2022-09-19T22:49:49Z")
I can’t find the avdec\_h264/h265 either. and I tried the following: ```auto gst-inspect-1.0 --print-blacklist ``` and I got ```auto (gst-plugin-scanner:12344): GStreamer-WARNING **: 06:39:06.843: Failed to load plugin '/usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstlibav.so': /lib/aarch64-linux-gnu/libavcodec.so.58: undefined symbol: v4l2_open (gst-plugin-scanner:12344): GStreamer-WARNING **: 06:39:07.055: Failed to load plugin '/usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstchromaprint.so': /lib/aarch64-linux-gnu/libavcodec.so.58: undefined symbol: v4l2_open Blacklisted files: libgstchromaprint.so libgstlibav.so ``` both errors point to `undefined symbol: v4l2_open`. ---
**Author:** ![Honey\_Patouceul](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/honey_patouceul/32/389777_2.png) [@Honey\_Patouceul](https://forums.developer.nvidia.com/u/Honey_Patouceul)\ **Post date:** [September 20, 2022, 8:14am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/13 "2022-09-20T08:14:10Z")
This is a different issue. Please create a new topic for your case. ---
**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\ **Post date:** [October 4, 2022, 8:15am UTC](https://forums.developer.nvidia.com/t/unable-find-avdec-h264-after-intsalled-gstreamer-plug-ins-into-jetson-agx-orin/226575/14 "2022-10-04T08:15:09Z")
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