2016-09-27 23:30 GMT+08:00 付 秋平 <fu.qiup...@hotmail.com>:
> AAC 48khz has alreay been supported in flv_enc.c file, when the flv with
> audio format is aac
>
> it just set it into:
>
> if (enc->codec_id == AV_CODEC_ID_AAC) // specs force these parameters
> return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ |
> FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
>
> when i use ffmpeg in the live video stream project, some user publish the
> rtmp stream with (h264 and mp3 48khz)
> then i need to use ffmpeg to convert the "rtmp" live stream to "flv" live
> stream, ffmpeg can not support and make a warning.
> so i change this code to make it support this.
> ________________________________
> 发件人: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> 代表 Steven Liu <
> lingjiujia...@gmail.com>
> 发送时间: 2016年9月27日 15:15
> 收件人: FFmpeg development discussions and patches
> 主题: Re: [FFmpeg-devel] [PATCH] flv format support mp3 audio with 48khz
>
> 2016-09-27 23:01 GMT+08:00 <fu.qiup...@hotmail.com>:
>
> > From: frankos2 <frankqpfu@localhost.localdomain>
> >
> > ---
> > libavformat/flvenc.c | 8 ++++++++
> > 1 files changed, 8 insertions(+), 0 deletions(-)
> >
> > diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
> > index 99903f5..296426a 100644
> > --- a/libavformat/flvenc.c
> > +++ b/libavformat/flvenc.c
> > @@ -107,6 +107,13 @@ static int get_audio_flags(AVFormatContext *s,
> > AVCodecParameters *par)
> > return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ |
> > FLV_SAMPLESSIZE_16BIT;
> > } else {
> > switch (par->sample_rate) {
> > + case 48000:
> > + if (par->codec_id == AV_CODEC_ID_MP3) {
> > + flags |= FLV_SAMPLERATE_44100HZ;
> >
> and you can support aac too.
>
> > + break;
> > + } else {
> > + goto error;
> > + }
> > case 44100:
> > flags |= FLV_SAMPLERATE_44100HZ;
> > break;
> > @@ -124,6 +131,7 @@ static int get_audio_flags(AVFormatContext *s,
> > AVCodecParameters *par)
> > break;
> > }
> > default:
> > +error:
> > av_log(s, AV_LOG_ERROR,
> > "FLV does not support sample rate %d, "
> > "choose from (44100, 22050, 11025)\n",
> > par->sample_rate);
> > --
> > 1.7.1
> >
> > _______________________________________________
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> > ffmpeg-devel@ffmpeg.org
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> >
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>
Ok, LGTM, thanks!
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