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• Problem error : [out#0/image2 @ 000001b2582c3b00] Output file does not contain any stream [closed]

  17 juillet 2024, par Đào Thanh Tùng

  i'm not any kind of developer or s.t, just a person want to download some anime video from some site to watch offline. I'm having some issue when using ffmpeg to download it.
Here's the code that i use :

  


  D:\File App\ffmpeg-2024-07-15-git-350146a1ea-full_build\ffmpeg-2024-07-15-git-350146a1ea-full_build\bin> .\ffmpeg -protocol_whitelist https,file,tls,tcp,cryptio -i phim18.m3u8 -c copy phim18.png



  


  And i get some issue with the output one, here's the output :

  


  ffmpeg version 2024-07-15-git-350146a1ea-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 13.2.0 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      59. 28.100 / 59. 28.100
  libavcodec     61. 10.100 / 61. 10.100
  libavformat    61.  5.101 / 61.  5.101
  libavdevice    61.  2.100 / 61.  2.100
  libavfilter    10.  2.102 / 10.  2.102
  libswscale      8.  2.100 /  8.  2.100
  libswresample   5.  2.100 /  5.  2.100
  libpostproc    58.  2.100 / 58.  2.100
[hls @ 000001efc1eb22c0] Skip ('#EXT-X-VERSION:4')
[hls @ 000001efc1eb22c0] Opening 'https://cloud.googleapiscdn.com/chunks/64ee0ea147f53204b550e609/1080/vJ9JdUdqRe7VNsVGJArCFA==:eLpGwsE9JqQv62clmyOTL_8ncGLJchKwkL2hF9qQSlXPV1DRR7xz5K2XsHpsCLL2/video0.html' for reading
[hls @ 000001efc1eb22c0] Opening 'https://cloud.googleapiscdn.com/chunks/64ee0ea147f53204b550e609/1080/s3HMZ3_g_lLMBdyeXTcFOA==:erBlcSN21rFVm7HbWRrApUjjIX8e8sAUY2fzuqUSUq5qWxkrbZaV_bffq5ucvHHz/video1.html' for reading
[hls @ 000001efc1eb22c0] Could not find codec parameters for stream 0 (Video: png, none): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, hls, from 'phim18.m3u8':
  Duration: 01:56:48.00, bitrate: 0 kb/s
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #0:0: Video: png, none, 25 tbr, 25 tbn
      Metadata:
        variant_bitrate : 0
Output #0, image2, to 'phim18.png':
[out#0/image2 @ 000001efc2773180] Output file does not contain any stream
Error opening output file phim18.png.
Error opening output files: Invalid argument


  


  I tried change the output but still get the same result. Hope someone can help me on this, thank you !

  


• RTSP stream escape 1 or 2 seconds in output video file

  20 février 2017, par A Sahra

  I am trying to capture RTSP video from network path (rtsp ://10.29.23.1/video) using ffmpeg framework

  When i capture the video the output video file generated with ffmpeg is very low in quality and also it escape 1 or 2 seconds after each 5 seconds of the source video

  The command that i am running is :

  >#ffmpeg -i rtsp://10.20.2.2/aerovid -vcodec libx264 -framerate 5 -f mp4 public/out.mp4
  
  Log:after running above command:
  
  [h264 @ 0x2b75640] P sub_mb_type 32 out of range at 16 1464 bitrate=226.8kbits/s dup=30 drop=0 speed=3.27x 
  
  [h264 @ 0x2b75640] error while decoding MB 16 14 
  
  [h264 @ 0x2b75640] concealing 402 DC, 402 AC, 402 MV errors in P frame 
  
  [h264 @ 0x2b75640] mb_type 52 in P slice too large at 0 379 bitrate=239.0kbits/s dup=48 drop=0 speed=1.65x 
  
  [h264 @ 0x2b75640] error while decoding MB 0 3 
  
  [h264 @ 0x2b75640] concealing 869 DC, 869 AC, 869 MV errors in P frame 
  
  [h264 @ 0x2b75640] out of range intra chroma pred mode 
  
  [h264 @ 0x2b75640] error while decoding MB 34 1 
  
  [h264 @ 0x2b75640] concealing 917 DC, 917 AC, 917 MV errors in P frame 
  
  [h264 @ 0x2b75640] P sub_mb_type 9 out of range at 9 5 
  
  [h264 @ 0x2b75640] error while decoding MB 9 5 
  
  [h264 @ 0x2b75640] concealing 778 DC, 778 AC, 778 MV errors in P frame 
  
  [h264 @ 0x2b75640] negative number of zero coeffs at 9 1507 bitrate= 288.7kbits/s dup=50 drop=0 speed=1.37x 
  
  [h264 @ 0x2b75640] error while decoding MB 9 15 
  
  [h264 @ 0x2b75640] concealing 368 DC, 368 AC, 368 MV errors in P frame 
  
  [h264 @ 0x2b75640] out of range intra chroma pred mode 
  
  [h264 @ 0x2b75640] error while decoding MB 12 3 
  
  [h264 @ 0x2b75640] concealing 857 DC, 857 AC, 857 MV errors in P frame 
  
  [h264 @ 0x2b75640] mb_type 53 in P slice too large at 38 6 
  
  [h264 @ 0x2b75640] error while decoding MB 38 6 
  
  [h264 @ 0x2b75640] concealing 708 DC, 708 AC, 708 MV errors in P frame    
  
  Invalid UE golomb code 
  
  [h264 @ 0x2b75640] cbp too large (3199971767) at 28 12 
  
  [h264 @ 0x2b75640] error while decoding MB 28 12 
  
  [h264 @ 0x2b75640] concealing 472 DC, 472 AC, 472 MV errors in P frame

  What is the reason and how to solve it please ?

• Gallery of VP8 Encoding Naivete

  15 octobre 2010, par Multimedia Mike — VP8

  I’ve been toiling away as a multimedia technology generalist for so long that it’s easy for me to forget that not everyone is as versed in the minutiae of the domain as I am. But I recently experienced what it’s like to be such an outsider when I posted about my toy VP8 encoder, expressing that it’s one of the hardest things I have ever tried to do. I heard of from number of people who do have extensive experience in video encoding, particularly with the H.264 and VP8 codecs. Their reactions were predictable : What’s so hard ? Look, you might be a little too immersed in the area to really understand a relative beginner’s perspective.

  And to all the people who suggested that I should get the encoder into FFmpeg ASAP : Are you crazy ?! Did you see what the first pass of the encoder produced ? Do you have lower standards than even I do ?

  
  
  

  Not Giving Up
  I worked a little more on the toy encoder. Remember that the above image is what I’m hoping to encode somewhat faithfully for this experiment. In my first pass, I attempted vertical prediction for all planes. For my next pass, I forced the chroma planes to mid-level (which results in a greyscale image) and played with the 16×16 luma prediction modes. When implementing an extremely naive algorithm to decide which 16×16 prediction mode would be the best for a particular block, this is what the program produced :

  
  
  

  For fun, here is what the image encodes to when forcing various prediction modes :
  

  I think the DC-only prediction mode actually looks a little better than the image that the naive algorithm produced :

  
  
  

  Vertical 16×16 prediction, similar to the image from the last post (just in black and white) :
  

  
  
  

  Horizontal 16×16 prediction :
  

  
  
  

  This is the 16×16 prediction mode unique to VP8, the TrueMotion mode (based on On2/Duck’s very first video codec) :
  

  
  
  

  Wow, these encodings really bring down the cheerful tone of the original image.

  Next Steps
  I have little reason to believe that I am encoding and subsequently reconstructing the image correctly (i.e., error is likely propagating through the entire encoding). If I have time, the next step is to validate my reconstruction against the encoder. Then I need to get the entropy considerations correct so that I actually get some compression out of this format.