AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Ffmpeg nvenc11/11/2023 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.
0 Comments
Read More
Leave a Reply. |