Hi everyone, I’m using Jetpack 4.5.1 on an Xavier AGX and I would like to enable GDR for H265 encoding. I’m testing the 01_video_encode sample with the following configuration: ./video_encode input.yuv 1920 1080 H265 output.h265 --egdr -gdrf gdr_params.txt --input-metadata where gdr_params.txt ha…

Hi, Please check the explanation from our team: We do GDR intra refresh for complete CTB row at a time. If any client specifies GDR num frames, then we update it internally based on HW restrictions as it does intra refresh for full CTB row. Our encoder is using CTB size of 32x32. In case of 1280x…

Hi @DaneLLL thanks for your reply. However, I already tested it in JP 4.6 and still it does not work as expected. It configures the Correct gdr_num_frames but it just works the first gdr_num_frames after the start_frame, then it does not repeat again. Please reread my question, there are the detai…

Hi, It looks to be a new issue. So on Jetpack 4.6, you only see first I frame is split into multiple P frames. The rest I frames are encoded only inside the frame. Is this correct?

Yes, you can see on the video I posted that on the right side which is with JP 4.6 the blue bar represents the piece of I frame in every P frame, it looks well until the frame 5 where it shows the I part on the end and after that it does not repeat anymore the cycle (which it does on the left side w…

Hi, Please help try this: Apply the if condition to 01_video_encode: //if (ctx.input_frames_queued_count == ctx.gdr_start_frame_number) if ((ctx.input_frames_queued_count % ctx.gdr_start_frame_number) == 0 && ctx.input_frames_queued_count > 0) Run 01_video_encode$ cat gdr_params.txt 15 6 01_…

Hi, I applied your changes and your example behaves as expected. At every 15 frames it starts distributing the I frame into the following 6 frames. Here’s a video: However, if I set the gdr_params.txt to “15 14” after every 15 frames it only distributes the I frame onto the next 12 fram…

Thanks @DaneLLL , your answer really helped me to understand what was going on.

Hi, an little bit off-topic question: The GDR capability, splits the IDR frames as well as it splits I frames? or one should send IDR frames once in a while (in order for the decoder to start playing)? thanks

GDR in H265 encoding not working as expected

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

DaneLLL November 24, 2021, 2:18am 3

Hi,
Please check
Jetson Nano multimedia API example 01_encoder with gdr - #16 by DaneLLL

The issue is fixed in Jetpack 4.6. Could you upgrade and try?

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GDR in H265 encoding not working as expected

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