We have bought 8 Zed2i cameras and required range extenders etc. for an outdoor project. In order to record SVO data for later processing, we also bought a laptop with Intel i9 CPU and Nvidia RTX3080 GPU. Unfortunately, soon we realized that almost all Nvidia GPUs(except Jetson family) allow only 3 concurrent recording with hardware compression.
As a first solution proposal, we tried to record SVO files in lossless mode using only CPUs. The setup works pretty well, except that huge file size of recordings(apprx. 5gb/min/camera). Besides, we could not found a SVO converter which keeps metadata(timestamp etc.) and compress lossless SVO data to H264/H265 SVO data which could be used for further CUDA implementations in ZED SDK.
Is there a way to compress lossless SVO data to H264/H265 SVO data ? What would be your recommendations ?
Hi @Gorkem
yes, there is a method, you must use the ZED SVO Editor command line tool.
You can get more information by opening a terminal and launching it without parameters:
$ ZED_SVO_Editor
You must provide arguments to this tools, here the list of them :
-inf Print SVO infos
-cut Cut a SVO and save the svo part between <s> and <e> to another svo.
-s or -e parameters must be specified.
If s is not specified, first frame will be taken.
If e is not specified, last frame will be taken.
-merge Add/Merge two or more SVO files into a single one.
SVO files must have the same resolution and same ZED Serial Number.
-cpr Convert a SVO into another SVO compression format
-m parameter must be specified.
-m Compression format to use with the -cpr option. m can be 0, 1, 2, 3, 4 , 5 or 6 for respectively PNG (Lossless), ZSTD (Lossless), JPEG (Lossy), H264 Lossy, H265 Lossy, H264 LossLess and H265 LossLess based compressions.
-repair Repair a SVO file by recreating a new SVO <svofilename_repaired.svo> with a recovered index table.
Sample usage:
"ZED_SVO_Editor -inf svo1.svo"
"ZED_SVO_Editor -cut svo1.svo -s 100 -e 200 output.svo"
"ZED_SVO_Editor -merge svo1.svo svo2.svo output.svo"
"ZED_SVO_Editor -cpr input.svo -m 2 output.svo"
"ZED_SVO_Editor -repair input.svo"
The options -cpr combined with -m is what you are searching for