This gist will help you to compile ffmpeg with NVENC, QSV, VAAPI, VDPAU, and OpenCL support.
nVidia
nvresizepatch is outdated and not more compatible to the latest version of FFmpeg, so it's not included in this documentation.
(even if I've passed a lot of time at trying to make it compile... without any success)
Please don't rely on this page: https://developer.nvidia.com/ffmpeg, the implementation is a hack and was never been added to the main FFmpeg tree.
Quickly check for supported NVENC and NPP hardware acceleration capabilities in FFmpeg on your platform:
Depending on how you built ffmpeg, you may want to check the supported NVENC-based hardware acceleration capabilities in ffmpeg by running:
$ for i in encoders decoders filters; do
echo $i:; ffmpeg -hide_banner -${i} | egrep -i "npp|cuvid|nvenc|cuda|nvdec"
done
Sample output (as on my testbed):
GNU Parallel is a multipurpose program for running shell commands in parallel, which can often be used to replace shell script loops,find -exec, and find | xargs. It provides the --sshlogin and --sshloginfile options to farm out jobs to multiple hosts, as well as options for sending and retrieving static resources and and per-job input and output files.
For any particular task, however, keeping track of which files need to pushed to and retrieved from the remote hosts is somewhat of a hassle. Furthermore, cancelled or failed runs can leave garbage on the remote hosts, and if input and output files are large, sending them to local disk on the remote hosts is somewhat inefficient.
In a traditional cluster, this problem would be solved by giving all nodes access to a shared filesystem, usually with NFS or something more exotic. However, NFS doesn't wo
Spawning multiple ffmpeg processes with xargs:
On standard NVIDIA GPUs (Not the Quadros and Tesla lines), NVENC encodes are limited to two simultaneous sessions. The sample below illustrates how to pass a list of AVI files to ffmpeg and encode them to HEVC on two encode sessions:
$ find Videos/ -type f -name \*.avi -print | sed 's/.avi$//' |\
xargs -n 1 -I@ -P 2 ffmpeg -i "@.avi" -c:a aac -c:v hevc_nvenc "@.mp4"
This will find all files with the ending .avi in the directory Videos/ and transcode them into HEVC/H265+AAC files with the ending .mp4. The noteworthy part here is the -P 2 to xargs, which starts up to two processes in parallel.
Hello guys,
Continuing from this guide to building ffmpeg and libav with NVENC and VAAPI enabled, this snippet will cover advanced options that you can use with ffmpeg and libav on both NVENC and VAAPI hardware-based encoders.
For ffmpeg:
This is a quick-and-dirty guide to setting up a Raspberry Pi as a "router on a stick" to PrivateInternetAccess VPN.
Install Raspbian Jessie (2016-05-27-raspbian-jessie.img) to your Pi's sdcard.
Use the Raspberry Pi Configuration tool or sudo raspi-config to:
| # vim: set ft=python: | |
| # see the README at https://gist.github.com/phiresky/4bfcfbbd05b3c2ed8645 | |
| # source: https://github.com/mpv-player/mpv/issues/2149 | |
| # source: https://github.com/mpv-player/mpv/issues/566 | |
| # source: https://github.com/haasn/gentoo-conf/blob/nanodesu/home/nand/.mpv/filters/mvtools.vpy | |
| import vapoursynth | |
| core = vapoursynth.get_core() |
| \n | |
| ============= HOST: ==========\n | |
| \n | |
| local_ip: %{local_ip}\n | |
| local_port: %{local_port}\n | |
| remote_ip: %{remote_ip}\n | |
| remote_port: %{remote_port}\n | |
| \n | |
| ======= CONNECTION: ==========\n | |
| \n |
