[FFmpeg-user] FPS drop when transcode 3 Full HD channel to SD
alex.molon at vision247.com
Tue Jun 13 16:13:13 EEST 2017
How many CPUs / cores are you using?
Transcoding FullHD in SD, without using any hardware accelleration for more than two channels seems a quite huge load.
It can be simply your CPU cannot go fast enough
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Hendrik Karsimin
Sent: 13 June 2017 14:03
To: ffmpeg-user at ffmpeg.org
Subject: [FFmpeg-user] FPS drop when transcode 3 Full HD channel to SD
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I've been trying to transcode the Full HD Channel (1920x1080) to SD (720x576).
When I transcode 1 channel, the resulting video is no problem. So are when transcode 2 channel.
But when the 3rd channel I tried to transcode start. the FPS start to drop on all the channel I transcoding.
I'm not sure if it's a computer hardware limitation or the software limitation.
But I have tried to change some parameter of ffmpeg, and settle on the last ffmpeg configuration I use now.
Attached is the information I collect on the PC I use to transcode.
The Ubuntu Version I use is Ubuntu 14.04.5
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Linux Compaq 3.13.0-119-generic #166-Ubuntu SMP Wed May 3 12:18:55 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
Need advice to resolve this problem.
*Thanks & regards,*
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