This will convert to h.264 in an MPG container in the same directory. Stream #0:1: Audio: eac3 ( / 0x0006), 48000 Hz, 5.Open a terminal and direct it to the directory containing the H.265 encoded files, assuming you have ffmpeg and the appropriate libraries installed and assuming they are in MKV format copy and paste the following into the terminal window. Error parsing NAL unit #2.ĭuration: N/A, start: 21829.677256, bitrate: N/A
Log: ffmpeg -timeout 10000000 -reconnect 1 -reconnect_at_eof 1 -reconnect_streamed 1 -reconnect_delay_max 2 -hwaccel_device 0 -hwaccel cuvid -vcodec hevc_cuvid -resize 1920x1080 -i ':' -max_muxing_queue_size 1024 -map 0:0 -map 0:2 -acodec libfdk_aac -b:a 96k -c:v h264_nvenc -gpu 0 -preset llhq -vprofile high -rc:v vbr -qmin:v 26 -qmax:v 35 -b:v 4M -maxrate 4M -bufsize 8M -threads 0 -r 25 -g 100 -f mpegts 'udp://127.0.0.1:6472'įfmpeg version N-95090-g646799b Copyright (c) 2000-2019 the FFmpeg developersīuilt with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.4)Ĭonfiguration: -prefix=/root/ffmpeg_build -pkg-config-flags=-static -extra-cflags=-I/root/ffmpeg_build/include -extra-ldflags=-L/root/ffmpeg_build/lib -bindir=/root/bin -enable-cuda-nvcc -enable-cuvid -enable-libnpp -extra-cflags=-I/usr/local/cuda/include/ -extra-ldflags=-L/usr/local/cuda/lib64/ -enable-gpl -enable-libass -enable-libfdk-aac -enable-libx264 -enable-libx265 -enable-pic -extra-libs='-lpthread -lm -lz -ldl' -enable-nvenc -enable-nonfree Is it not possible to convert HEVC back to H264? Provided device doesn't support required NVENC featuresĮrror initializing output stream 0:0 - Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height Now I am wondering is it not possible to fully hw transcode HEVC to H264?Ĭode used: ffmpeg -timeout 10000000 -reconnect 1 -reconnect_at_eof 1 -reconnect_streamed 1 -reconnect_delay_max 2 -hwaccel_device 0 -hwaccel cuvid -vcodec hevc_cuvid -resize 1920x1080 -i ' -max_muxing_queue_size 1024 -map 0:0 -map 0:2 -acodec libfdk_aac -b:a 96k -c:v h264_nvenc -gpu 0 -preset llhq -profile high -rc:v vbr -qmin:v 26 -qmax:v 32 -b:v 4M -maxrate 4M -bufsize 8M -threads 0 -r 25 -g 100 -f mpegts 'udp://127.0.0.1:6472' HEVC 4K to HEVC 1080p works but when I try hevc to h264 i get "No NVENC capable devices found"
I try to transcode a HEVC 4k broadcast down to 1080p H264.
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