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feat(linux): wave5: Add FFMPEG Encode commands #504

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Nov 10, 2025
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feat(linux): wave5: Add FFMPEG Encode commands #504

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31 changes: 31 additions & 0 deletions source/linux/Foundational_Components_Multimedia_wave5.rst
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Expand Up @@ -4,6 +4,8 @@
Multimedia Video Codec
######################

.. _multimedia-wave5-introduction:

************
Introduction
************
Expand Down Expand Up @@ -638,6 +640,35 @@ To pipe the output from ffmpeg to ffplay with hardware acceleration, the followi

ffmpeg -re -codec:v hevc_v4l2m2m -i input.h265 -fps_mode passthrough -f rawvideo - | ffplay -framerate 30 -video_size 1920x1080 -f rawvideo -autoexit -

FFMPEG also has support to use V4L2 HW accelerators for video encoding. The following command is an example for encoding a raw video by using the Wave5 IP:

.. code-block:: console

ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 352x288 -r 30 -i <input_video>.yuv -c:v h264_v4l2m2m <output_video>.h264 -y -nostdin

For H265 encoding, use the following command.

.. code-block:: console

ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 352x288 -r 30 -i <input_video>.yuv -c:v hevc_v4l2m2m <output_video>.h265 -y -nostdin

.. note::

352x288 is an example resolution. Update this value to properly reflect the resolution of the raw video.

FFMPEG can also capture video by using cameras attached to the device. See the following for an example.

.. code-block:: console

ffmpeg -f v4l2 -framerate 30 -video_size 1280x720 -i /dev/video3 -c:v h264_v4l2m2m <video_destination>

Remember that the Wave5 does have HW requirements for the raw video; see :ref:`multimedia-wave5-introduction` for these constraints. If the video is a
resolution not aligned to the HW requirements, FFMPEG can pad the video to make it compliant with HW. The following command accomplishes this.

.. code-block:: console

ffmpeg -f rawvideo -pix_fmt yuv420p -s 1920x1080 -r 30 -i <1080p_input_video>.yuv -vf "pad=width=1920:height=1088:x=0:y=0:color=black" -c:v h264_v4l2m2m <output_video>.h264

To print out the packet's data and payload data in hexadecimal from a given multimedia stream named :file:`foo.h265`, the following can be used:

.. code-block:: console
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