[Ffmpeg-devel] Audio Decoding and Encoding Using FFmpeg: program crashing at avcodec_encode_audio
Tue Mar 7 14:40:59 CET 2006
Renjith Nair said:
> Hi All,
> I have a problem while trying to encode audio using ffmpeg. Whenever the
> function avcodec_encode_audio is called teh system crashes. When that line
> is commented out then the program works without any problem. Can anybody
> have a clue, what is wrong with this code. Thanks in Advance.
> P.S: I am developing an audio encoding/decoding api using ffmpeg and
> planning to publish the code and the documentation on the web for free. Very
> few ffmpeg documentations (for programmers) are currently available on the
> web. So i plan to create a programmer's documentation with sample programs
> to assist the further development of ffmpeg. All are welcome to co-operate.
> The code with the problem is the following:
> outBuf = (int16_t*)malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE);
> output = (uint8_t*)malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE);
Don't cast the return value of malloc() (unless you are using C++ (which you
> while(av_read_frame(pFormatCtx, &packet)>=0)
> // Is this a packet from the audio stream?
> // Decoding the frame
> len = avcodec_decode_audio(pCodecCtx,outBuf, &outBufSize,packet.data,
> // Encoding the frame
> outPacket.size = avcodec_encode_audio(pCodecCtx,output, outputSize,
> (short*)outBuf);//<-- This line causes the crash
You can't use the same AVCodecContext for both encoding and decoding.
mru at inprovide.com
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