检查有哪些CODEC
show codecs freeswitch@telecom> show codecs type,name,ikey codec,ADPCM (IMA),mod_spandsp codec,AMR / Bandwidth Efficient,mod_amr codec,AMR / Octet Aligned,mod_amr codec,B64 (STANDARD),mod_b64 codec,G.711 alaw,CORE_PCM_MODULE codec,G.711 ulaw,CORE_PCM_MODULE codec,G.722,mod_spandsp codec,G.723.1 6.3k,mod_g723_1 codec,G.726 16k,mod_spandsp codec,G.726 16k (AAL2),mod_spandsp codec,G.726 24k,mod_spandsp codec,G.726 24k (AAL2),mod_spandsp codec,G.726 32k,mod_spandsp codec,G.726 32k (AAL2),mod_spandsp codec,G.726 40k,mod_spandsp codec,G.726 40k (AAL2),mod_spandsp codec,G.729,mod_g729 codec,GSM,mod_spandsp codec,LPC-10,mod_spandsp codec,PROXY PASS-THROUGH,CORE_PCM_MODULE codec,PROXY VIDEO PASS-THROUGH,CORE_PCM_MODULE codec,RAW Signed Linear (16 bit),CORE_PCM_MODULE codec,Speex,CORE_SPEEX_MODULE codec,VP8 Video,CORE_VPX_MODULE codec,VP9 Video,CORE_VPX_MODULE
没有看到H264。为什么呢？
freeswitch@telecom> load mod_av 2020-07-04 18:22:42.470632 [INFO] switch_stun.c:897 External ip address detected using STUN: 180.112.27.205 2020-07-04 18:22:42.730632 [INFO] switch_stun.c:897 External ip address detected using STUN: 180.112.27.205 2020-07-04 18:22:42.870636 [INFO] mod_enum.c:884 ENUM Reloaded 2020-07-04 18:22:42.870636 [INFO] switch_time.c:1430 Timezone reloaded 1750 definitions +OK Reloading XML -ERR [module load file routine returned an error] 2020-07-04 18:22:42.870636 [CRIT] switch_loadable_module.c:1785 Error Loading module /usr/local/freeswitch/mod/mod_av.so **/usr/local/freeswitch/mod/mod_av.so: undefined symbol: avfilter_link**
加载失败。编译链接时没有加上相应的库。解决这个错误即可。
