ffmpeg 4.2 disables ffnvcodec, cuvid, nvdec and nvenc on aarch64. While Jetson platforms don't support cuvid, they do support the cuda and npp filters, which depend on ffnvcodec and were thus unnecessarily disabled. Later versions of ffmpeg don't disable any of it on aarch64, so this simply backports the later behavior.
ffmpeg 4.2 disables ffnvcodec, cuvid, nvdec and nvenc on aarch64. While Jetson platforms don't support cuvid, they do support the cuda and npp filters, which depend on ffnvcodec and were thus unnecessarily disabled. Later versions of ffmpeg don't disable any of it on aarch64, so this simply backports the later behavior.