rtc Codec not found by name(13,libopus)，depends.sh's bug？' Translation: The rtc Codec was not found by name (13, libopus). Is this a bug in depends.sh?

[chenminnj]

When using the SRS compiled from the 4.0 release branch source code and running "./objs/srs -c conf/rtc.conf" to receive an RTMP stream from ffmpeg, SRS throws an error:

"[2021-06-23 04:19:24.303][Error][1][2pr3fp6k][11] serve error code=5011 : service cycle : rtmp: stream service : bridger init : init codec : enc init codec:13, channels:2, samplerate:48000, bitrate:48000 : Codec not found by name(13,libopus)",

which causes the ffmpeg stream to fail:

"Error writing trailer of rtmp://xxx:1935/live/1: Broken pipe".

1. SRS version: 4.0release
2. Operating environment: Ubuntu 20.04.2 LTS

In the srs/trunk/auto/depends.sh script, when building ffmpeg, the parameters after $FFMPEG_CONFIGURE and before "--disable-everything" are causing the options in ${FFMPEG_OPTIONS} such as "--enable-decoder=libopus --enable-encoder=libopus --enable-libopus" to not take effect. As a result, the avcodec_find_encoder_by_name function cannot find libopus.

By moving ${FFMPEG_OPTIONS} after "--disable-everything", recompiling srs, the streaming works fine.

PS. Docker version: ossrs/srs:v4.0.123. The RTC receiving RTMP streams works fine. I wonder how this Docker image of SRS was compiled.

TRANS_BY_GPT3

[duiniuluantanqin]

Indeed, let's have a PR (pull request), leave your name.

TRANS_BY_GPT3

[winlinvip]

The Docker version is the one before the modification. It has already been fixed, thanks to @chenminnj.

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