[FFmpeg-user] ffmpeg convert audio noise.how to improve the command?

张凯 zhangkai.gis at 163.com
Wed Aug 7 17:48:01 EEST 2019

Hi Carl,
    I will recompile ffmpeg,the input file is Linux named pipe file.so it is not a regular file. the content is the device's audio stream(codec is g722).Let me show how this work:many device report there stream to a public tcp address ( eg) then my software put those stream to different Linux named pipe. then I use ffmpeg to convert this stream to a stream media. hope I make it clear.

On 08/07/2019 17:49, Carl Eugen Hoyos wrote:

> Am 07.08.2019 um 10:36 schrieb 张凯 <zhangkai.gis at 163.com>:
>    I have a server to access the audio stream(fmt g722).When I use ffmpeg to convert the stream to aac( ffmpeg -thread_queue_size 128  -f g722 -i test/01334516771/1/alive -acodec aac -f flv rtmp:// I only get noise.

Please provide your input file.

> noibelowse.is the ffmpeg's output
> [go at tdsg vavms]$ ffmpeg -thread_queue_size 128  -f g722 -i test/01334516771/1/alive -acodec aac -f flv rtmp://
> ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers
>  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)

>  configuration: --disable-x86asm

Unrelated: You should never use this configure option.

Carl Eugen
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