By the way, cpu usage seems lower when rendering 1080p than when rendering 4k, however 4k goes faster.
On Mon, Dec 9, 2019 at 1:09 PM Daniel Kinzelman <[email protected]> wrote: > Thank you all for your help! I've tried your suggestions and things have > improved somewhat (although unfortunately, I don't know exactly what action > made the biggest difference). I have successfully updated to the current > version of Cinelerra in the repositories. > > I've done some additional testing and found strange results. All of my > testing was performed with the FFMPEG>Youtube>hd_h264.youtube preset. > > As a baseline, timeline playback with both 4k and 1080p runs at full > framerate, or nearly full framerate (as long as no effects are enabled). > > Rendering a 4k video from a friend's camera with no effects takes about > double real time. Bitrate on this video is 95MB/s > > Rendering a 1080p video from my own camera, transcoded with ffmpeg to > reduce bitrate to 10MB/s (native bitrate for this camera is unnecessarily > extremely high) takes about triple real time. This makes no sense to me > since the source data rate for the 1080p files is so much lower, but > perhaps my method of transcoding on file ingestion is faulty, and is > creating problems for Cinelerra? > > Here is the command line I'm using to transcode when ingesting from my > camera: -vcodec libx264 -preset fast -b:v 8000k -acodec copy > > Regarding HW acceleration, anything other than 'none' produces no output > in the compositor and no video output in rendered files (although they sure > render quickly!). > > Here's my video hardware: > > 05:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108GL > [Quadro 600] [10de:0df8] (rev a1) (prog-if 00 [VGA controller]) > Subsystem: Hewlett-Packard Company GF108GL [Quadro 600] [103c:0835] > Physical Slot: 2 > Flags: bus master, fast devsel, latency 0, IRQ 42, NUMA node 0 > Memory at ee000000 (32-bit, non-prefetchable) [size=16M] > Memory at e0000000 (64-bit, prefetchable) [size=128M] > Memory at e8000000 (64-bit, prefetchable) [size=32M] > I/O ports at c000 [size=128] > Expansion ROM at 000c0000 [disabled] [size=128K] > Capabilities: [60] Power Management version 3 > Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [78] Express Endpoint, MSI 00 > Capabilities: [b4] Vendor Specific Information: Len=14 <?> > > As a side note, I've tried the 'Transcode' option and it broke my > projects, gradually replacing videos on the timeline with videos which > produced only a black screen. I couldn't figure out how to backtrack and > had to delete all configuration files and reinstall Cinelerra to fix this. > Any advice? > > On Mon, Dec 9, 2019 at 6:03 AM Phyllis Smith < > > wrote: > >> Preview: As you can see from the responses already, there are a lot of >> --> SPAM? CLICK to BLOCK >> <> >> >> This email is Masked using Blur - it was sent from lists.cinelerra-gg.org >> to [email protected] (your reply stays Masked). To protect >> your privacy <https://www.abine.com/faq.html#caniaddcc>, do not forward >> this message, or add new recipients like CCs or BCCs. >> >> Thanks for being a Blur customer! If you haven't yet, [ Try DeleteMe at >> a discount. >> <https://joindeleteme.com/?utm_campaign=blur-offer&utm_source=masked-email-header> >> ] >> >> As you can see from the responses already, there are a lot of factors >> that can affect render times! But I do not see this in a 720x576 video that >> I rendered with file format ffmpeg/mp4. It was a 4 minute video and took >> only 32 seconds to render. You can see in the attached file with another >> window running "top" that shows %CPU = 1149 (so while rendering it is using >> 11 1/2 cpus out of 16). You can see on the timeline that the video is >> about 4 minutes long and you can see in the lower left hand bottom corner, >> that Rendering took...0.32 seconds. >> >> In Settings->Preferences, Performance tab I have Cache set to 4096 and >> SMP cpu count set to 16. I have not looked at your screenshot in detail >> yet, but will try to do so tomorrow. In the Render menu, using the Video >> wrench, I chose h264.mp4. I will also try on a 1080p video. >> >>> >>> I am getting what I consider to be very slow render times and wanted to >>> know if something is set up wrong. >>> >>> As a test, I imported a 1080p video from my camera, looped it several >>> times and rendered it with no effects or compositing. For a 4 minute video >>> it took about 12 minutes to render as an .mp4. >>> >>> CPU usage never went above 23% and memory usage never went above 19%. >>> >>> >> >> >> -- >> Cin mailing list >> [email protected] >> https://lists.cinelerra-gg.org/mailman/listinfo/cin >> >
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