Hi,
I am using the h264_v4l2m2m decoder with libavcodec on a Raspberry Pi Zero 2 running Bookworm OS. My codec has the AV_CODEC_CAP_DELAY capability set, which means "The decoder has a non-zero delay" (reference: https://ffmpeg.org/doxygen/6.0/group__l ... 95028855e6). I have observed that the decoder stores N encoded frames before outputting a decoded frame, and the value of N varies depending on the resolution, with higher resolution leading to a larger N. It means i have a delay in decoding about N*time_per_frame (e.g., at 25 fps, time_per_frame=40 milliseconds).
Is there a way to reduce this N value?
Thanks,
Alessandro
I am using the h264_v4l2m2m decoder with libavcodec on a Raspberry Pi Zero 2 running Bookworm OS. My codec has the AV_CODEC_CAP_DELAY capability set, which means "The decoder has a non-zero delay" (reference: https://ffmpeg.org/doxygen/6.0/group__l ... 95028855e6). I have observed that the decoder stores N encoded frames before outputting a decoded frame, and the value of N varies depending on the resolution, with higher resolution leading to a larger N. It means i have a delay in decoding about N*time_per_frame (e.g., at 25 fps, time_per_frame=40 milliseconds).
Is there a way to reduce this N value?
Thanks,
Alessandro
Statistics: Posted by longo92 — Mon May 06, 2024 8:54 am
