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Hi Gonzalo, all, </div>
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thanks for pointing out what I did wrong. I now get files that are of reasonable sizes 20 MB, something that one would expect. I have added the .h and .cpp file that I have modified according to your feedback and I have also added the .h file for the image
class. But the generated videofiles that I get can not be read by VLC or any other application. </div>
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When I run "ffmpeg.exe -v error -i c:\tmp\myVideo.mp4 -f null - >error.log 2>&1 " , I get the following error lines multiple times :</div>
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[h264 @ 05c0c780] No start code is found.</div>
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[h264 @ 05c0c780] Error splitting the input into NAL units.</div>
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Error while decoding stream #0:0: Invalid data found when processing input<br>
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I have also attached a debug output file that is created by my C++/Qt application in which you'll see which images are send to the encoder. What I don't understand is that the first 26 frames are send to the encoder but not written to the file, I know that
the H264 needs some frames before it starts encoding but I would like those frames to be written to the videofile as well. </div>
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Your help is greatly appreciated. </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Van:</b> Libav-user <libav-user-bounces@ffmpeg.org> namens Gonzalo Garramuño <ggarra13@gmail.com><br>
<b>Verzonden:</b> maandag 22 februari 2021 17:55<br>
<b>Aan:</b> libav-user@ffmpeg.org <libav-user@ffmpeg.org><br>
<b>Onderwerp:</b> Re: [Libav-user] help needed on "Encoding .png images with h264 to a file on disk"</font>
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<div class="x_moz-cite-prefix">El 22/2/21 a las 05:25, laddoe escribió:<br>
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can anybody please help me with my post of 2 days ago, I'm really stuck but not able to understand what is wrong. I have also tried several different code examples but it all ends up the same as mentioned in the post. Am I not understanding this ? Are my expectations
of the results incorrect? I'm new to this so please bear with me. </div>
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<p>One thing that is wrong in your code is that you never call av_write_trailer(), which should be called before avio_close().</p>
<p>Also, there's no need for m_file in your code. avformat handles the file for you.</p>
<p>Other things are hard to say, as you don't provide the code to the Image or cv::Mat classes. You should provide a self-compilable example for us to help you.<br>
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