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• Video encryption cannot be played, no key file is found [closed]

  15 août 2021, par rin ye

  This is a video clip downloaded from a software, but I don't know what encryption method is used for this video. Does anyone know what encryption method is used ?https://drive.google.com/file/d/15ZypIca-ljzF-Oh_9jBMXPFUuXbOr16P/view?usp=sharing

  


• How to use avcodec_send_packet to send AVPacket that is not from av_read_frame ?

  27 juillet 2020, par Lucas Zanella

  I'm trying to send the RTSP sream like this :

  


  AVPacket pkt;
av_init_packet(&pkt);

//...
pkt.data = encodedPacket->getFramePointer();
pkt.size = encodedPacket->getSize();
ret = avcodec_send_packet(decoder_ctx, &pkt);
if (ret < 0)
{
    std::cout << "avcodec_send_packet error " << ret << std::endl;
}


  


  I sometimes get avcodec_send_packet error -1094995529 but not always.

  


  I cannot use av_read_frame since my packets are coming from RTSP, not from a file that ffmpeg opens.

  


  I've used this technique of filling only pkt.data and pkt.size for software decoding and it works, but for hardware decoding it's not working. I don't know if this is the problem, but it could be, I had no errors in the entire setup of the decoder contexts and etc

  


• FFMPEG : How to mix different types of image sequence inputs when creating multiple streams

  9 août 2021, par chutlies

  I am using a piece of software that generates a .txt files with rendered images. The list within that txt files is printed with the word 'file' at the beginning of the file path.

  


  Ex : file 'file:C :/Users/User/Desktop/test/Test.0001.png'

  


  I am attempting to input another image sequence as an overlay. Everything works fine if I just overlay, scale, and render. So this works fine :

  


  ffmpeg -hide_banner -y -f concat -safe 0 -i C:/test/input.txt -i "C:/test/BALL.%04d.png" -filter_complex "overlay[4K_in];[4K_in]scale=1920:1080[hdOut]" -map [hdOut] hd.mp4


  


  But when I start to split the stream to create different outputs it will only render the overlayed stream [1:v] and not the composited image.

  


  ffmpeg -hide_banner -y -f concat -safe 0 -i C:/test/input.txt -i "C:/test/BALL.%04d.png" -filter_complex "overlay,split=3[mp4HD_in][mxf720_in][mov4K_in];[mp4HD_in]scale=1920:1080[mp4HD_out];[mxf720_in]scale=1280:720[mxf720_out];[mov4K_in]scale=3840:2160[mov4K_out]" -crf 16 -vcodec libx264 -map [mp4HD_out] C:/test/hdMP4.mp4 -vcodec prores -map [mov4K_out] C:/test/MOV4K.mov -vcodec dnxhd -pix_fmt yuv422p -b:v 75M -map [mxf720_out] C:test/MXF720.mxf


  


  If I remove 'file' from the frames file path in the .txt file it works.

  


  Ex : file 'C :/Users/User/Desktop/test/Test.0001.png'

  


  Unfortunately, I am unable to change this as it's being generated and run within a piece of software. Are there any flags or something that I need to add to get around this ? Any other possible techniques beyond starting another &&ffmpeg call to generate the streams over the overlay ?

  


  I do get this in the logs :&#xA;[concat @ 0000024a0eacf280] DTS -230584300921369 < 0 out of order&#xA;DTS -230584300921369, next:40000 st:0 invalid dropping&#xA;PTS -230584300921369, next:40000 invalid dropping st:0&#xA;DTS -230584300921369, next:40000 st:0 invalid dropping&#xA;PTS -230584300921369, next:40000 invalid dropping st:0&#xA;DTS -230584300921369, next:40000 st:0 invalid dropping&#xA;PTS -230584300921369, next:40000 invalid dropping st:0&#xA;DTS -230584300921369, next:40000 st:0 invalid dropping&#xA;PTS -230584300921369, next:40000 invalid dropping st:0&#xA;[image2 @ 0000024a0eadd140] Thread message queue blocking ; consider raising the thread_queue_size option (current value : 8)

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