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Can a GPU accelerated H264 encoder work with ffmpeg?
See the difference on the arm in motion. With ffmpeg and a decent GPU (like a Quadro P4000) the h265/HEVC encoder finaly gets a good speedboost with up to 90fps when encoding HD movies with the below parameter values and 200fps when using the GPU accelerated h264 encoder.
How are Nvidia GPUs used for FFmpeg acceleration?
NVENC and NVDEC can be effectively used with FFmpeg to significantly speed up video decoding, encoding, and end-to-end transcoding. This document explains ways to accelerate video encoding, decoding and end-to-end transcoding on NVIDIA GPUs through FFmpeg which uses APIs exposed in the NVIDIA Video Codec SDK.
How to use ffmpeg as a video decoder?
The FFmpeg video decoder is straightforward to use. To decode an input bitstream frominput.mp4, use the following command. ffmpeg -y -vsync 0 -c:v h264_cuvid -i input.mp4 output.yuv This generates the output file in NV12 format (output.yuv).
Do you need CUDA toolkit to run FFmpeg?
FFmpeg requires separate git repository nvcodec-headers for NV-accelerated ffmpeg build. To compile FFmpeg, the CUDA toolkit must be installed on the system, though the CUDA toolkit is not needed to run the FFmpeg compiled binary. Before using FFmpeg, it is recommended to refer to the FFmpeg documentation, note the
NVENC and NVDEC can be effectively used with FFmpeg to significantly speed up video decoding, encoding, and end-to-end transcoding. This document explains ways to accelerate video encoding, decoding and end-to-end transcoding on NVIDIA GPUs through FFmpeg which uses APIs exposed in the NVIDIA Video Codec SDK.
What kind of output can I get from FFmpeg?
Output: 480p 240p (from input1.mp4), 720p. 480p (from input2.mp4) (audio same as input) Once basic FFmpeg setup is confirmed to be working properly, other options provided on the FFmpeg command line can be used to test encoding, decoding, and transcoding.
Can You globally disable HEVC _ NVENC in FFmpeg?
With these triggering a lot of crashes recently, an option to globally disable all of them is added as a tool to work around those crashes in case the SEI data is not needed by the user. Also re-enables s12m for hevc_nvenc, since the issue is not specifically with that, but it affects all SEI data.
How can I use CRF encoding with NVENC in FFmpeg?
With the current NVENC encoder wrapper implementation in FFmpeg, note that valid presets can now be overriden with a tunable, depending on the target workload. See this answer on how this is implemented, as shown in the example given above. With FFmpeg, you can always refer to an encoder’s settings for customization by:
Can a HEVC encoder be used with a GPU?
With ffmpeg and a decent GPU (like a Quadro P4000) the h265/HEVC encoder finaly gets a good speedboost with up to 90fps when encoding HD movies with the below parameter values and 200fps when using the GPU accelerated h264 encoder. This speed is achieved with a Quadro P4000 from NVidia when encoding 1920×1080 movies with -preset slow.
Do you need a GPU to use FFmpeg?
FFmpeg provides a subsystem for hardware acceleration, which includes NVIDIA: https://trac.ffmpeg.org/wiki/HWAccelIntro In order to enable support for GPU-assisted encoding with an NVIDIA GPU, you need: