Important! Is there a way to get GPU-accelerated video decoding through FFMPEG? This is important so that we can have GPU acceleration for video scaling in our 3D scanning algorithms. Indeed, there is. There are plugins “codecs” for FFMPEG that do exactly that. So, good news to get this going on the Raspberry Pi quickly and efficiently. Unfortunately, there are reports of lower quality from using these algorithms for video encoding.
VDPAU, XVMC, VA API
20180217/DuckDuckGo ffmpeg gpu video scaling
20180217/https://stackoverflow.com/questions/5554933/ffmpeg-hardware-acceleration-gpu-directshow
20180217/https://stackoverflow.com/questions/18286334/convert-video-with-ffmpeg-using-gpu
20180217/https://en.wikipedia.org/wiki/VDPAU
Don’t bother, NVIDIA-only.
20180217/https://en.wikipedia.org/wiki/Nvidia_NVDEC
20180217/https://en.wikipedia.org/wiki/X-Video_Motion_Compensation
20180217/https://en.wikipedia.org/wiki/Video_Acceleration_API
Okay, let’s be particular to the Raspberry Pi. Looks like it is possible through FFMPEG.
20180217/DuckDuckGo raspberry pi ffmpeg hardware accelerated decoding
20180217/https://stackoverflow.com/questions/40175644/ffmpeg-hardware-acceleration-on-raspberry-pi
20180217/https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=182960
Okay, so apparently this tutorial enlightens you, and you may need to custom-compile packages to get adequate hardware video acceleration.
20180217/DuckDuckGo raspberry pi play video hardware acceleration
20180217/https://stackoverflow.com/questions/34851897/hardware-acceleration-for-video-playing-and-streaming-on-raspberry-pi-2
20180217/https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=59814&start=150
omxplayer is the way to go if you want to see an example of hardware
accelerated video decoding on the Raspberry Pi.
20180217/https://learn.adafruit.com/raspberry-pi-video-looper/overview
Take note. For FFMPEG, x86 MMX/SSE decoding is not available in the LGPL licensed version, only GPL. Yes, you’ll notice a slowdown if you use a less richly licensed version.
20180217/DuckDuckGo No accelerated colorspace conversion found.
20180217/http://www.ffmpeg-archive.org/No-accelerated-colorspace-conversion-found-td942709.html
Also, take note! The new version 2 of SDL is not backwards compatible with SDL 1.2.
20180217/https://en.wikipedia.org/wiki/Simple_DirectMedia_Layer