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Correction, I meant av_frame_new_side_data but it looks like the "side data" is not meant for that. I couldn't find the right documentation that would explain what the purpose is for the "side data" ( the same for AVPacketSideData). I also tried the metadata
struct (AVDictionary) in the AVFrame struct but it did not work either. </div>
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I'm really stuck on this and have been reading/trying a lot but I guess I need some help of a pro. My goal is to add a uint32_t value to each frame or packet before encoding but if that is not possible I would like to add an array of uint32_t in the container
which I would be able to retrieve back after I decode it. </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 laddoe <xyfix@hotmail.com><br>
<b>Verzonden:</b> woensdag 16 februari 2022 00:28<br>
<b>Aan:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <libav-user@ffmpeg.org>; This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <libav-user@ffmpeg.org><br>
<b>Onderwerp:</b> Re: [Libav-user] Custom data in AVPacket or AVFrame</font>
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At first I thought it would be possible to do it per frame, so I tried AVFrameSideData and the av_frame_set_data. Then I thought to try it on a packet with AVPacketSideData. But none of this worked.</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>Van:</b> Libav-user <libav-user-bounces@ffmpeg.org> namens Brad Hards <bradh@frogmouth.net><br>
<b>Verzonden:</b> dinsdag 15 februari 2022 23:15<br>
<b>Aan:</b> This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. <libav-user@ffmpeg.org><br>
<b>Onderwerp:</b> Re: [Libav-user] Custom data in AVPacket or AVFrame</font>
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<div class="x_PlainText">On Wednesday, 16 February 2022 9:03:32 AM AEDT laddoe wrote:<br>
> const std::string encoderName( "libx264rgb");<br>
> <br>
> const AVCodecID decoderID( AV_CODEC_ID_H264 );<br>
> <br>
> does this make any difference to the answer that was given by Brad ?<br>
It might make a difference to what decoder gets chosen.<br>
<br>
What have you tried? If nothing, you probably should test next. You should be <br>
able to see your results in the bitstream file on encoding (e.g. by searching <br>
for your UUID in a hex editor), which allows you to check your development.<br>
<br>
Brad<br>
<br>
<br>
<br>
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