Re: [FFmpeg-user] Reg: CPU Usage Issue
On Wed, Jul 23, 2014 at 8:45 AM, subeesh.babu subeesh.b...@industeqsite.com wrote: Any one suggest how to reduce the CPU usage . I thought I'd collate all the advice you have been given so far in to one list, so that when you re-post asking the same thing again without having tried any of them, people can see the whole list of things that you've ignored. 1) Use an up to date ffmpeg, it might fix things, and it is the only version supported on this list 2) Show your complete command line and uncut output 3) Don't encode the content on the slow CPU, simply copy it with -c copy 4) Use a different encoder, eg MPEG-2 or libx264 5) Tune your encoder, eg libx264 can produce the same quality with a low bitrate and a high bitrate, producing it with a low bitrate is slower since it needs to do more work. Control it with -preset. Cheers Tom ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Reg: CPU Usage Issue
Hi , 1 . I am using DM8148 Davinci Processor and in that Arm7 core is using with a speed of 600MHz. 2 . ffmpeg-1.1.4 is using . 3. Command used for streaming the video shall be given below . It streams the data but is slow and takes 99% of CPU usage. ffmpeg -re -i video.mp4 -f mpegts udp:10.5.4.69:1234 4. The above command is what i am using for streaming an MP4 video file . Can any one suggest how to reduce the CPU usage . Regards, Subeesh babu Mob: +91-8939229627 - Original Message - From: Moritz Barsnick barsn...@gmx.net To: FFmpeg user discussions ffmpeg-user@ffmpeg.org Sent: Saturday, July 05, 2014 4:40 PM Subject: Re: [FFmpeg-user] Reg: CPU Usage Issue On Fri, Jul 04, 2014 at 11:39:19 +0530, subeesh.babu wrote: ffmpeg -re -i video.mp4 -f mpegts udp:10.5.4.69:1234 a.. It takes 99% of CPU usage . Any one suggest how to reduce my CPU usage . If video.mp4 already contains the correct codecs with the correct parameters for your streamed mpegts, you could avoid recoding totally by adding: -c copy (or -c:v copy, if it shall only apply to video). That avoids very much of the CPU usage. Apart from that, we usually expect your full ffmpeg command line and the complete, uncut output on this list, to better understand your scenario. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Reg: CPU Usage Issue
On Fri, Jul 18, 2014 at 11:31:36 +0200, Moritz Barsnick wrote: On Fri, Jul 18, 2014 at 14:56:22 +0530, subeesh.babu wrote: Can any one suggest how to reduce the CPU usage . Did you even read my reply? (You quoted it.) Have you tried the suggestion? Did it help? Furthermore, if you do wish/need to recode, and if your ffmpeg uses libx264 as the default encoder (as you don't state an encoder explicitly on your command line, you can use one of the presets to get a better encoding framerate, at the cost of a higher bandwidth (roughly speaking). E.g. -preset veryfast. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
