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Can someone point me to a reference where I can learn how to set up
the codec parameters? Even if it is only setting up for WMAV2, but
I do need to record both audio and video.<br>
<br>
On 6/17/2015 5:53 PM, Kevin J. Brooks wrote:<br>
<blockquote cite="mid:5581FA82.3080709@r2c-ss.com" type="cite">
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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:<br>
<br>
int outSize = avcodec_encode_audio(<span style=" font-weight:600;">m_audioStream</span>-><span
style=" font-weight:600;">codec</span>, <span style="
font-weight:600;">m_audioOutputBuffer</span>, <span style="
font-weight:600;">m_audioOutputBufferSize</span>, (short
*)samples.data<span style=" color:#ffff00;"><font color="#000000">())</font>;</span><br>
<br>
In debug the error staates "Stopped in thread 2 by:Exception at
0x66364c62, cod:0xc0000005: write access violation at:0x1,
flags=0x0 (first chance).<br>
<br>
I suspect I don't have the audio settings set write, but I am not
sure how to set them for WMAV2.<br>
<br>
<br>
<br>
On 6/17/2015 4:30 PM, Kevin J. Brooks wrote:<br>
<blockquote cite="mid:5581E6F9.8050408@r2c-ss.com" type="cite">
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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.<br>
<br>
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.<br>
<span style=" color:#646482;"> </span><span style="
color:#aaff00;"><br>
<font color="#000000">CR2CAudioFormat</font></span> format;
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"> format.setChannelCount(2);</pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"> format.setSampleRate(44100);</pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"> format.setFormat(CR2CAudioFormat::SignedInt16);</pre>
<br>
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.<br>
<br>
<div class="moz-cite-prefix">
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On 6/17/2015 1:08 AM, Taha Ansari wrote:<br>
</div>
<blockquote
cite="mid:CAK2cdgBVRZMzPmPP_H8A6BXpmDRRqQ5qxRWxFqMr=pAC2gDRHA@mail.gmail.com"
type="cite">
<div dir="ltr">On Wed, Jun 17, 2015 at 2:17 AM, Gonzalo
Garramuno <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ggarra13@gmail.com" target="_blank">ggarra13@gmail.com</a>></span>
wrote:<br>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">On 16/06/15 09:06, Kevin J. Brooks wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Yes I am. For more information, I am developing
on Windoze 7.<br>
</blockquote>
</span> avcodec_open2 can fail if you lack the library
for the codec you want to decode or encode. For
example, libx264. The libraries in <a
moz-do-not-send="true"
href="http://ffmpeg.zeranoe.com" rel="noreferrer"
target="_blank">ffmpeg.zeranoe.com</a> 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.<span class="HOEnZb"></span><br>
</blockquote>
</div>
<br>
</div>
<div class="gmail_extra">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).<br>
<br>
</div>
<div class="gmail_extra">@Kevin: maybe you have some bare
minimum code with you that can produce this error, which
people can have a look? <br>
</div>
</div>
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