Wayne:
I had downloaded the package you mention. I have located at least one problem. There appears to be two sets of code and binaries as JetPack 3.1 ships. One set exists in ~/nvidia/tegra_multimedia_api (what appears like it should work with the README data) and another in ~/tegra_multimedia_api
The ~/tegra_multimedia_api set comes with compiled binaries (and permissions set to execute). The ~/nvidia/tegra_multimedia_api set must be compiled in order to execute, but I haven’t worked through the settings necessary to get a clean compile yet. (Film at 11).
So, I might be on the trail of getting things going, but there is definitely a problem at nVidia with two sets of directories that are incompatible.
Here is the command line suggested from README in the L4T package (~/nvidia/tegra_multimedia_api):
$ cd backend
$ make
$ ./backend 1 …/…/data/video/sample_outdoor_car_1080p_10fps.h264 H264
–gie-deployfile …/…/data/model/GoogleNet-modified.prototxt
–gie-modelfile …/…/data/model/GoogleNet-modified-online_iter_30000.caffemodel
–gie-forcefp32 0 --gie-proc-interval 1 -fps 10
Here is the result of “./backend --help” from the ~/tegra_multimedia_api/samples/backend directory:
backend … [options]
Channel-num:
1-4, Number of file arguments should exactly match the number of channels specified
Supported formats:
H264
H265
OPTIONS:
-h,–help Prints this text
-fps Display rate in frames per second [Default = 30]
--s Give a statistic of each channel
--input-nalu Input to the decoder will be nal units[Default]
--input-chunks Input to the decoder will be a chunk of bytes
--trt-deployfile set deploy file name
--trt-modelfile set model file name
--trt-proc-interval set process interval, 1 frame will be process every trt-proc-interval
--trt-forcefp32 0 to use fp16 (if supported), 1 to use fp32
--trt-dumpresult 1 to dump result, 0[default] otherwise
--trt-enable-perf 1[default] to enable perf measurement, 0 otherwise
directory structure on shipping code in ~/tegra_multimedia_api:
~/tegra_multimedia_api/data/Model
~/tegra_multimedia_api/data/Video
From ~/nvidia/tegra_multimedia_api directory:
~/nvidia/tegra_multimedia_api/data/model
~/nvidia/tegra_multimedia_api/data/video