0000258: Loading 90+ GoPro images in separate tracks takes very long, yet CPU load low.

ID	Project	Category	View Status	Date Submitted	Last Update

0000258	Cinelerra-GG	[All Projects] Bug	public	2019-07-01 20:22	2019-07-02 15:57

Reporter	MatN	Assigned To	PhyllisSmith
Priority	normal	Severity	major	Reproducibility	always
Status	acknowledged	Resolution	open
Platform	X86_64	OS	Mint	OS Version	19.1
Product Version
Target Version		Fixed in Version

Summary	0000258: Loading 90+ GoPro images in separate tracks takes very long, yet CPU load low.
Description	Release 2019-06. On a freshly started cin-gg, load 93 GoPro mjpeg files as ¨append in new tracks¨. This takes very long, 7 minutes or more. Each image (track) becomes 3 seconds long (see issue 255). The weird thing is that CPU load is 23% or so, so in theory it could be 4 times faster if it was CPU limited. The project format is equal to the image format, 2648x1504 pixels. Before loading the images, I have a single empty video track. Test variations: ulimit 1024, 2048 or 4096 made no difference; running as root and ulimit 4096 made no difference. All files together are about 150M, well below the cache size of 256M set in the Settings. System memory is 32G, after all tracks are done about 3.5G is used. ¨Use HW Device¨ is set to ¨none¨ . While cin is filling the video tracks, the program reacts normally but very slow.
Steps To Reproduce	See description
Tags	No tags attached.

Date Modified	Username	Field	Change
2019-07-01 20:22	MatN	New Issue
2019-07-02 15:57	PhyllisSmith	Note Added: 0001845
2019-07-02 15:57	PhyllisSmith	Assigned To	=> PhyllisSmith
2019-07-02 15:57	PhyllisSmith	Status	new => acknowledged

PhyllisSmith 2019-07-02 15:57 manager ~0001845	Refer to this section in CinelerraGG_manual.pdf: 5.2.2 Timelapse Sequence of Images, and Animation This is what gg always uses when there are more than about 50 images. Also, refer to response to issue 255.