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H264 extract SEI using FFMPEG
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// It's actually quite simple to extract unregistered sei data using ffmpeg, but I couln't find any documentation about how it's done | |
AVFrameSideData *sd; | |
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_SEI_UNREGISTERED); | |
if (sd) { | |
// First 15 bytes is the uuid, unregistered payload start at index 16 and the | |
// total size is given by sd->size | |
printf("side-data size %ld first-byte %u\n", sd->size, sd->data[16]); | |
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