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Again, T<span id="" title="" class=""><span id="" title="" class="">hanks</span> for your input -- never said the code was bug free or even not buggy -- but I do know the free of all the context listed are being called and other than avformat_free_context()
which has no way to check it worked (not sure way it was written like that) are validated.</span></div>
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<span title="" class="">code is here <a href="https://github.com/wkeeling63/racecam" id="LPlnk">https://github.com/wkeeling63/racecam</a></span></div>
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Please let me know if you have any ideas </div>
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Thanks</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Libav-user <libav-user-bounces@ffmpeg.org> on behalf of Paul B Mahol <onemda@gmail.com><br>
<b>Sent:</b> Wednesday, March 3, 2021 1:28 PM<br>
<b>To:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <libav-user@ffmpeg.org><br>
<b>Subject:</b> Re: [Libav-user] Reuse of format context after free and reallocate?</font>
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<div dir="ltr" class="x_gmail_attr">On Wed, Mar 3, 2021 at 8:26 PM william keeling <<a href="mailto:williamkeeling@hotmail.com">williamkeeling@hotmail.com</a>> wrote:<br>
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thanks for you input -- I am freeing all context and still get the errors as if FLVContext is not freed</div>
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<div>Than show actual code, It must be buggy.</div>
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<div id="x_gmail-m_-8794236861927058738divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Libav-user <<a href="mailto:libav-user-bounces@ffmpeg.org" target="_blank">libav-user-bounces@ffmpeg.org</a>>
on behalf of Paul B Mahol <<a href="mailto:onemda@gmail.com" target="_blank">onemda@gmail.com</a>><br>
<b>Sent:</b> Wednesday, March 3, 2021 11:21 AM<br>
<b>To:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <<a href="mailto:libav-user@ffmpeg.org" target="_blank">libav-user@ffmpeg.org</a>><br>
<b>Subject:</b> Re: [Libav-user] Reuse of format context after free and reallocate?</font>
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<div dir="ltr">On Wed, Mar 3, 2021 at 5:50 PM william keeling <<a href="mailto:williamkeeling@hotmail.com" target="_blank">williamkeeling@hotmail.com</a>> wrote:<br>
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I have not used "<span style="font-size:15px; background-color:rgb(255,255,255); display:inline">valgrind" I will need to look into that tool. any tips on how to use it?</span></div>
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<div>If you are on Linux, using it is very easy.</div>
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<span style="font-size:15px; background-color:rgb(255,255,255); display:inline">yes, I am free the all contexts before reallocation but I cannot find a way to for the FLVContext/Muxer to be freed/reinitialized thru the API.</span></div>
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<span style="font-size:15px; background-color:rgb(255,255,255); display:inline">I am doing the following:</span></div>
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avcodec_free_context() of all streams video and audio </p>
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<span style="font-family:Calibri,sans-serif; font-size:11pt">avformat_free_context() </span></p>
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avio_close() </p>
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<div>If you really do all this than that error would never happen.</div>
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<font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Libav-user <<a href="mailto:libav-user-bounces@ffmpeg.org" target="_blank">libav-user-bounces@ffmpeg.org</a>> on behalf of Paul B Mahol <<a href="mailto:onemda@gmail.com" target="_blank">onemda@gmail.com</a>><br>
<b>Sent:</b> Wednesday, March 3, 2021 5:54 AM<br>
<b>To:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <<a href="mailto:libav-user@ffmpeg.org" target="_blank">libav-user@ffmpeg.org</a>><br>
<b>Subject:</b> Re: [Libav-user] Reuse of format context after free and reallocate?</font>
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<div dir="ltr">On Wed, Mar 3, 2021 at 5:22 AM william keeling <<a href="mailto:williamkeeling@hotmail.com" target="_blank">williamkeeling@hotmail.com</a>> wrote:<br>
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I did some digging and found the error is coming from this code in flvenv.c line 921.
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<div> if (pkt->dts < -flv->delay) {</div>
<div> av_log(s, AV_LOG_WARNING,</div>
<div> "Packets are not in the proper order with respect to DTS\n");</div>
<div> return AVERROR(EINVAL);</div>
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<div>flv is a pointer to FLVContext from AVFormatContext->priv_data.<br>
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<div>Looks like the avformat_write_header()/avformat_init_output uses the state of the muxer at the last run even if the AVFormatContext has been freed and reallocated.</div>
So how do I get the FLVContext to be initlized as if a fresh run. Or how do I free the old FLVContext so when avformat_write_header() initlizes the priv_data it is fresh.<br>
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<font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Libav-user <<a href="mailto:libav-user-bounces@ffmpeg.org" target="_blank">libav-user-bounces@ffmpeg.org</a>> on behalf of william keeling <<a href="mailto:WilliamKeeling@hotmail.com" target="_blank">WilliamKeeling@hotmail.com</a>><br>
<b>Sent:</b> Monday, March 1, 2021 2:32 PM<br>
<b>To:</b> <a href="mailto:libav-user@ffmpeg.org" target="_blank">libav-user@ffmpeg.org</a> <<a href="mailto:libav-user@ffmpeg.org" target="_blank">libav-user@ffmpeg.org</a>><br>
<b>Subject:</b> [Libav-user] Reuse of format context after free and reallocate?</font>
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I have a program the creates flash format stream and is work the first time thru but when I process the second stream, I get DTS/PTS non monotonically errors. </p>
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After each stream I free and reallocate all contexts: </p>
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avcodec_free_context() of all streams video and audio </p>
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avformat_free_context() </p>
<p style="margin:0in 0in 8pt; line-height:107%; font-size:11pt; font-family:Calibri,sans-serif">
avio_close() </p>
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What am I missing so the format context can be reallocate and used? </p>
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<div>Looks like to be real bug to me.</div>
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Thanks William </p>
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