[Asterisk-video] app_transcoder.so: undefined symbol: avcodec_init

[laurent schweizer]

Hello,

I try to start asterisk 1.4.6 with the app_transcoder module but I have this
error.

Thanks

codec_alaw.so => (A-law Coder/Decoder)
  == Registered custom function MATH
func_math.so => (Mathematical dialplan function)
  == Registered application 'PrivacyManager'
app_privacy.so => (Require phone number to be entered, if no CallerID sent)
  == Registered application 'DumpChan'
app_dumpchan.so => (Dump Info About The Calling Channel)
  == Registered application 'rtsp'
app_rtsp.so => (RTSP applications)
  == Registered application 'Milliwatt'
app_milliwatt.so => (Digital Milliwatt (mu-law) Test Application)
asterisk: symbol lookup error: /usr/lib/asterisk/modules/app_transcoder.so:
undefined symbol: avcodec_init
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