[Libav-user] avcodec_open2 returns -22
Kevin J. Brooks
kbrooks at r2c-ss.com
Thu Jun 18 00:53:54 CEST 2015
I changed the Audio codec to WMAV2, and left the rest of the AudioCodec
settings the same Now the program crashes at this line in the QtMel code:
int outSize = avcodec_encode_audio(m_audioStream->codec,
m_audioOutputBuffer, m_audioOutputBufferSize, (short *)samples.data());
In debug the error staates "Stopped in thread 2 by:Exception at
0x66364c62, cod:0xc0000005: write access violation at:0x1, flags=0x0
I suspect I don't have the audio settings set write, but I am not sure
how to set them for WMAV2.
On 6/17/2015 4:30 PM, Kevin J. Brooks wrote:
> I am setting the AudioCodec to MP3, I am using the pre-built
> libraries the code I have the causes the issue is from the code for
> the QtMEL library. What I am posting here is the Audio Codec setup
> for the QtMel object. I hope it helps.
> BTW I am using H264 for the Video Codec. If I record video only, it
> does work, it is only if I try to add sound that it fails.
> CR2CAudioFormat format;
> I really don't have a preference for the codec, I just need to know
> how to set it up properly. I am totally new at recording video and audio.
> On 6/17/2015 1:08 AM, Taha Ansari wrote:
>> On Wed, Jun 17, 2015 at 2:17 AM, Gonzalo Garramuno
>> <ggarra13 at gmail.com <mailto:ggarra13 at gmail.com>> wrote:
>> On 16/06/15 09:06, Kevin J. Brooks wrote:
>> Yes I am. For more information, I am developing on Windoze 7.
>> avcodec_open2 can fail if you lack the library for the codec you
>> want to decode or encode. For example, libx264. The libraries
>> in ffmpeg.zeranoe.com <http://ffmpeg.zeranoe.com> contain all
>> codecs, but they are GPL only. You should try them first and see
>> if the problem goes away. If it does, you know you have to
>> compile ffmpeg with different flags.
>> Since he mentions Windows 7, I assume he is using pre-built packages
>> from zeranoe site (as you mention). These builds contain proprietary
>> codec(s) like x264 (non GPL).
>> @Kevin: maybe you have some bare minimum code with you that can
>> produce this error, which people can have a look?
>> Libav-user mailing list
>> Libav-user at ffmpeg.org
> Libav-user mailing list
> Libav-user at ffmpeg.org
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