The following command works ok for me
gst-launch-1.0 -ev rtspsrc location=rtsp://127.0.0.1:8554/test ! application/x-rtp, media=video, encoding-name=H264 ! queue ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! ‘video/x-raw(memory:NVMM),width=640,height=480’ ! nvv4l2h264enc ! h264parse ! matroskamux ! filesink location=received_h264.mkv
It reads from an H264 encoded rtsp stream and saves to a file using the same format after downscaling to 640x480.
Is it possible to write the video using H265 instead of H264? If yes, then how should I modify the command?
It worked, thanks. But the video is of exactly the same size. I expected a smaller size compared to H264 format.
Hi,
The bitrate will meet the configured value and psnr is better in h265. Please run the commands and do comparison:
H264 vs H265 - #4 by DaneLLL
Thanks for the answers, they are really helpful.
Is there sth I could do to reduce the size? Lower the bitrate perhaps? But how can I do sth like this?
Hi,
It should work by setting bitrate to a smaller value. Default value is 4Mbps and can try 1Mbps for 480p30.
Thanks,
can you please also tell me how should I modify the gstreamer pipeline to achieve the new bitrate?
Hi,
Please try
gst-launch-1.0 -ev rtspsrc location=rtsp://127.0.0.1:8554/test ! application/x-rtp, media=video, encoding-name=H264 ! queue ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! ‘video/x-raw(memory:NVMM),width=640,height=480’ ! nvv4l2h265enc bitrate=1000000 ! h265parse ! matroskamux ! filesink location=received_h265.mkv
The command lists all encoder properties:
gst-inspect-1.0 nvv4l2h265enc
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