[FFmpeg-user] ffmpeg HIGH CPU, http streaming with libmp3lame
lou at lrcd.com
Tue Feb 5 02:18:46 EET 2019
On Mon, Feb 4, 2019, at 11:31 AM, Zoltan Kerenyi Nagy wrote:
> Hi All,
> For some reason the CPU is insanely high, hitting almost all the time 100%,
> I run ffmpeg on an ARM7 4 core embedded device.
> This is the setup, how I do it:
> ffserver -d -f /etc/ffserver.conf
> ffmpeg -f alsa -i hw:0,0 http://localhost:4444/audio.ffm
You can see if libshine gives you better performance likely at the cost of quality per bit but it may not matter. You'll need to compile with "--enable-libshine" and encode with "-c:a libshine" unless it is the only MP3 encoder.
> ffmpeg -f alsa -i hw:0,0-ar 8000 http://localhost:4444/audio.ffm
Use the "-sample_rate" ALSA private option (before the input) if you want to change the sample rate, otherwise ffmpeg will use the default ALSA value of 48000 and resample to 8000.
More information about the ffmpeg-user