- #FFMPEG ANDROID DECODER BENCHMARK TEST ANDROID#
- #FFMPEG ANDROID DECODER BENCHMARK TEST SOFTWARE#
- #FFMPEG ANDROID DECODER BENCHMARK TEST CODE#
#FFMPEG ANDROID DECODER BENCHMARK TEST SOFTWARE#
When you say "graphical performance", I assume you mean video decode performance, and not 3D rendering performance, in which case yes MFC will be much faster and more power efficient than decoding on the CPU, using FFMPEG software codec, OpenCL accelerated, or similar. The odroid forums have some talk of XBMC using MFC so it's worth taking a look there.
#FFMPEG ANDROID DECODER BENCHMARK TEST ANDROID#
From what I understand, the Android framework, gstreamer, and XBMC (possibly through gstreamer) make use of MFC to perform video decode. Yes MFC is ultimately what you should be using to perform the video decode. Will this MFC with gstreamer have better graphical performance compared to GPU accelerated(by OpenCL) FFMPEG software codec and gstreamer framework layer added? And if I assume that I add gstreamer framework layer that linked to MFC hardware codec, Best case it uses OpenCL to perform the video decode, but this almost certainly will be less performant than performing the video decode on MFC.
#FFMPEG ANDROID DECODER BENCHMARK TEST CODE#
I can't say I know what this refers to, but I'd take a look at the code and see what it hooks up to. It can bewrong, so I'd better find some more information though. They are NOT decoding the video stream itself using OpenCL, this is still being done with some other API.Īnd there is 'Use GPU accelerated decoding' check box in VLC player too. They are not using OpenCL to perform the decoding of the video, they use OpenCL to accelerate some image filtering/processing (denoise, deshake, scaling) on the decoded video frames, and they observe a 10x speedup compared to doing this processing on the CPU. OpenCL Software Development Services GPGPU Acceleration This article below says VLC player's decode performance can be reached up to 10x speeds when it use hardware acceleration. OpenMAX is an API which grants access to hardware blocks designed specifically for decoding video, so if your SoC has such hardware there should be a userland library, possibly OpenMAX, providing access to it, but this is treading into territory I'm not so familiar with.Īnd I guess I may need OpenCL package to accelerate video decoding of VLC player. I'm not familiar with exactly how VLC works, but my money would be on it using ffmpeg, or OpenMAX (or ffmpeg uses OpenMAX) or something along those lines to decode the video. In the case of VLC, I don't believe OpenGL ES or OpenCL are necessary at all for video decode. Both use the GPU to accelerate workloads, but only for applications which target the API (VLC probably does not, but ffmpeg can optionally be built with OpenCL support for some filters ) OpenGL ES is a 3D graphics API, and OpenCL is a compute API. Write NEON in either assembly or intrinsics, or use a vectorizing compiler, and it will run on any processor with NEON. NEON has no dependency on any APIs, and works the same as SSE on Intel, for example. This will return all options and parameters when encoding with this encode method.NEON is a co-processor and the only requirement is that you have compiler support to be able to compile code which uses it. To view more details on an encoder ffmpeg -h encoder=libx264 Libx264 encoder only supports video (V) also provided is the codec. isHardwareAccelerated () Returns true if a codec is accelerated by hardware. Software codecs make no guarantees about rendering performance. D = Supports direct rendering method 1 V. Beginning with Android 10 (API level 29) and higher, there are methods in MediaCodecInfo that reveal more information about a codec: isSoftwareOnly () Returns true if the codec runs in software only. You can also see the encoders and decoders for each codec. Looking at two popular codecs returned, h264 has DEV.LS whilst h265 has DEV.L meaning h265 is missing Lossless compression ability (In this version). hevc H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_cuvid ) (encoders: libx265 nvenc_hevc hevc_amf hevc_nvenc hevc_qsv ) S = Lossless compression DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv h264_cuvid ) (encoders: libx264 libx264rgb h264_amf h264_nvenc h264_qsv nvenc nvenc_h264 )ĭEV.L.
To list all codecs in FFmpeg simply do ffmpeg -codecs Think putting many frames and audio together and playing them back or when you skip ahead providing the right data. A codec is the logic to encoding or decoding a media stream, there are many different types with popular ones being H.264, HEVC ( H.265) and MPEG-4.Ĭodecs are different to containers like MP4, MKV and MOV because a codec manages the bitrate, resolution and frames whilst the container organizes and returns the data as sequence.
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