Hello,
Now, I have already called the avcodec_open2 function successfully by
calling av_dict_set(&opts, "strict", "experimental", 0) firstly. But now I run
into an other problem again: when I call the avcodec_encode_audio2(c, &pkt,
frame, &got_output) firstly, it returned 0 and the got_output is 0 too, and
when I call the avcodec_encode_audio2(c, &pkt, frame, &got_output) secondly,
it'll incur an address accessing error: read 0xFFFFFFFF. I don't know what I
have made mistake, and I have no any way now. I'll very appreciate anyone who
can help me, thanks very much.
the program is attached as following, here the srcdata is a pointer array,
srcdata[1] = srcdata[0] + 4096, and they all have been filled original audio
data befor the while loop. I have try to replace the
avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt, (const
uint8_t*)pCurSource, m_SrcBuffLen, 0); with frame->data[0] = srcdata[0];
frame->data[1] = srcdata[1]; but the problem still exists.
note: I used the ffmpeg native AAC encoder, and I have found and opened the
encoder successfully.
=============program==============
got_output = 0;
offset = 0;
while(i<10)
{
i++;
av_init_packet(&pkt);
pkt.data = NULL; // packet data will be allocated by the encoder
pkt.size = 0;
pCurSource = srcdata[0];
ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
(const uint8_t*)pCurSource, m_SrcBuffLen, 0);
/* encode the samples */
ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
if (ret >= 0 && pDest != NULL && got_output && pkt.data != NULL &&
pkt.size > 0)
{
memcpy(pDest + destLen, pkt.data, pkt.size);
destLen = destLen + pkt.size;
av_free_packet(&pkt);
}
}
------------------
Justin
------------------ Original ------------------
From: "Justin"<[email protected]>;
Date: Tue, Apr 9, 2013 05:54 PM
To: "This list is about using libavcodec, libavformat, libavutil,libavdevice
and libavfilter."<[email protected]>;
Subject: Re: [Libav-user] AAC encoding error
I have done as your way, and pleasantly found that it really worked sucessfully.
I very appreciate you, thank you very much again.
------------------
Best Regards,
Justin
------------------ Original ------------------
From: "Andrey Utkin"<[email protected]>;
Date: Tue, Apr 9, 2013 07:42 AM
To: "This list is about using libavcodec, libavformat, libavutil,libavdevice
and libavfilter."<[email protected]>;
Subject: Re: [Libav-user] AAC encoding error
2013/4/8 Justin <[email protected]>:
> But, how can I set the additional flag? thank you very much.
This way:
AVDictionary *opts = NULL;
av_dict_set(&opts, "strict", "experimental", 0);
int ret = avcodec_open2(encoder_context, codec, &opts);
av_dict_free(&opts);
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