Hi,

When I setup a baresip (0.5.4) to use a H264 mp4 file or rstp H264 stream as a video source via avformat, the H264 gets decoded and encoded back to H264. The video stream is smooth however this behaviour leads to high cpu utilization that is pointless. Is it possible to bypass the decoding/encoding and send H264 frames directly over the network?

Thanks,
Tomek.

Config <<

baresip configuration

#------------------------------------------------------------------------------

Core

poll_method epoll # poll, select, epoll ..

SIP

sip_trans_bsize 128
sip_listen 192.168.1.10:5060
#sip_certificate cert.pem

Call

call_local_timeout 120
call_max_calls 4

Audio

#audio_path /usr/share/baresip
audio_player alsa,default
audio_source alsa,default
audio_alert alsa,default
audio_srate 8000-48000
audio_channels 1-2
#ausrc_srate 48000
#auplay_srate 48000
#ausrc_channels 0
#auplay_channels 0

Video

video_source avformat,/home/tomek/mov.mp4
#video_display x11,nil
#video_size 352x288
video_bitrate 500000
video_fps 25

AVT - Audio/Video Transport

rtp_tos 184
#rtp_ports 10000-20000
#rtp_bandwidth 512-1024 # [kbit/s]
rtcp_enable yes
rtcp_mux no
jitter_buffer_delay 5-10 # frames
rtp_stats no
#rtp_timeout 60

Network

#dns_server 10.0.0.1:53
#net_interface enp0s3

BFCP

#bfcp_proto udp

#------------------------------------------------------------------------------

Modules

module_path /home/tomek/baresip

UI Modules

module stdio.so
#module cons.so
#module evdev.so
#module httpd.so

Audio codec Modules (in order)

#module opus.so
#module silk.so
#module amr.so
#module g7221.so
#module g722.so
#module g726.so
module g711.so
#module gsm.so
#module l16.so
#module speex.so
#module bv32.so
#module mpa.so
#module codec2.so
#module ilbc.so
#module isac.so

Audio filter Modules (in encoding order)

module vumeter.so
#module sndfile.so
#module speex_aec.so
#module speex_pp.so
#module plc.so

Audio driver Modules

module alsa.so
#module pulse.so
#module jack.so
#module portaudio.so
#module aubridge.so
#module aufile.so

Video codec Modules (in order)

module avcodec.so
#module vp8.so
#module vp9.so
#module h265.so

Video filter Modules (in encoding order)

#module selfview.so
#module snapshot.so
#module swscale.so
#module vidinfo.so

Video source modules

#module v4l.so
#module v4l2.so
#module v4l2_codec.so
module avformat.so
#module x11grab.so
#module cairo.so
#module vidbridge.so

Video display modules

#module directfb.so
#module x11.so
#module sdl2.so
#module fakevideo.so

Audio/Video source modules

#module rst.so
#module gst1.so
#module gst_video1.so

Media NAT modules

module stun.so
module turn.so
module ice.so
#module natpmp.so

Media encryption modules

#module srtp.so
#module dtls_srtp.so
#module zrtp.so

#------------------------------------------------------------------------------

Temporary Modules (loaded then unloaded)

module_tmp uuid.so
module_tmp account.so

#------------------------------------------------------------------------------

Application Modules

module_app auloop.so
module_app contact.so
module_app debug_cmd.so
module_app dtmfio.so
#module_app echo.so
#module_app gtk.so
module_app menu.so
#module_app mwi.so
#module_app natbd.so
#module_app presence.so
#module_app syslog.so
module_app vidloop.so

#------------------------------------------------------------------------------

Module parameters

cons_listen 0.0.0.0:5555

http_listen 0.0.0.0:8000

evdev_device /dev/input/event0

Speex codec parameters

speex_quality 7 # 0-10
speex_complexity 7 # 0-10
speex_enhancement 0 # 0-1
speex_mode_nb 3 # 1-6
speex_mode_wb 6 # 1-6
speex_vbr 0 # Variable Bit Rate 0-1
speex_vad 0 # Voice Activity Detection 0-1
speex_agc_level 8000

Opus codec parameters

opus_bitrate 28000 # 6000-510000

Selfview

video_selfview window # {window,pip}
#selfview_size 64x64

ICE

ice_turn no
ice_debug no
ice_nomination regular # {regular,aggressive}
ice_mode full # {full,lite}

Menu

#redial_attempts 3 # Num or
#redial_delay 5 # Delay in seconds

Config <<