To Whom it may concern,
I'm trying to implement this cli command into c that calls the libav API, however I am stuck as this is my first time using the libav libraries. I can't get it to write the 'covr' tag like the cli command does and I don't really know where I'm going wrong. It seems to write the jpeg data but not in a compliant format and therefore, only VLC can recognize the attached_pic. >From what I understand here is what roughly needs to happen: 1. open the jpeg file using avformat_open_input 2. call avformat_find_stream_info with AVFormatContext param from step 1 3. create a new stream on the output AVFormatContext using avformat_new_stream 4. call avcodec_parameters_copy with the jpeg context as the source and the output as the destination 5. OR the created output stream's 'disposition' member with AV_DISPOSITION_ATTACHED_PIC (from what I understand the library fills 'attached_pic' automatically?) 6. call avformat_write_header with the output AVFormatContext As I said previously, it's my first time using the lib and I am unsure if I missed a step or made an error executing the steps such as being out of order and/or misinterpreting what needed to occur. Any help is greatly appreciated. ffmpeg -i file_audio.m4a -i file.jpg -map 0 -map 1 -c copy -disposition:v:0 attached_pic file_audio_with_pic.m4a
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