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• How to Identify the Version of ffmpeg.dll in WebView2 Runtime Fixed Version

  19 février, par Po-Sen

  I am currently using the WebView2 runtime fixed version. After expanding the package, I found multiple DLL files, including ffmpeg.dll.

  


  In the file properties, the file version is displayed as 0.0.0.0, and the only version-related information I can see is the product version : git-2024-04-25-e3581fa2dd.

  


  

  


  This format is different from the numeric versioning scheme I see on the official FFmpeg website : https://ffmpeg.org/download.html#releases.

  


  

  


  I want to trace the exact FFmpeg version used in this WebView2 distribution.
Initially, I assumed e3581fa2dd was a Git commit SHA. However, after cloning the FFmpeg repository from https://git.ffmpeg.org/ffmpeg.git, I could not find this commit.

  


  Our product was recently scanned and found to contain FFmpeg version 3.4.2, which has known CVE security vulnerabilities. Therefore, we want to clarify the actual version of FFmpeg included in the WebView2 runtime.

  


  How can I determine the version of ffmpeg.dll included in WebView2 runtime fixed version ?

  


• Correct syntax for using ffmpeg CUDA to crop and scale videos [closed]

  9 septembre 2024, par Stuart

  My NVIDIA and FFMPEG configuration is as follows :

  


  Linux TestBox1 6.8.0-41-generic #41-Ubuntu SMP PREEMPT_DYNAMIC Fri Aug 2 20:41:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

  


  NVIDIA-Linux-x86_64-560.31.02

  


  ffmpeg version git-2024-08-19-507c2a577
encoders:
 V....D av1_nvenc            NVIDIA NVENC av1 encoder (codec av1)
 V....D h264_nvenc           NVIDIA NVENC H.264 encoder (codec h264)
 V....D hevc_nvenc           NVIDIA NVENC hevc encoder (codec hevc)
decoders:
 V..... av1_cuvid            Nvidia CUVID AV1 decoder (codec av1)
 V..... h264_cuvid           Nvidia CUVID H264 decoder (codec h264)
 V..... hevc_cuvid           Nvidia CUVID HEVC decoder (codec hevc)
 V..... mjpeg_cuvid          Nvidia CUVID MJPEG decoder (codec mjpeg)
 V..... mpeg1_cuvid          Nvidia CUVID MPEG1VIDEO decoder (codec mpeg1video)
 V..... mpeg2_cuvid          Nvidia CUVID MPEG2VIDEO decoder (codec mpeg2video)
 V..... mpeg4_cuvid          Nvidia CUVID MPEG4 decoder (codec mpeg4)
 V..... vc1_cuvid            Nvidia CUVID VC1 decoder (codec vc1)
 V..... vp8_cuvid            Nvidia CUVID VP8 decoder (codec vp8)
 V..... vp9_cuvid            Nvidia CUVID VP9 decoder (codec vp9)
filters:
 ... bilateral_cuda    V->V       GPU accelerated bilateral filter
 T.. bwdif_cuda        V->V       Deinterlace CUDA frames
 ... chromakey_cuda    V->V       GPU accelerated chromakey filter
 ... colorspace_cuda   V->V       CUDA accelerated video color converter
 ..C crop              V->V       Crop the input video.
 T.C cropdetect        V->V       Auto-detect crop size.
 ... hwupload_cuda     V->V       Upload a system memory frame to a CUDA device.
 ... overlay_cuda      VV->V      Overlay one video on top of another using CUDA
 ... scale_cuda        V->V       GPU accelerated video resizer
 ... scale_npp         V->V       NVIDIA Performance Primitives video scaling and format conversion
 ... scale2ref_npp     VV->VV     NVIDIA Performance Primitives video scaling and format conversion to the given reference.
 ... sharpen_npp       V->V       NVIDIA Performance Primitives video sharpening filter.
 ... thumbnail_cuda    V->V       Select the most representative frame in a given sequence of consecutive frames.
 ... transpose_npp     V->V       NVIDIA Performance Primitives video transpose
 T.. yadif_cuda        V->V       Deinterlace CUDA frames


  


  I would like to be able to use CUDA to crop and scale videos but I cannot find the correct syntax.
My efforts usually work in terms of the scale but not the crop, here is an example of the type of problems I have been having :

  


  The source file in this example is a short mpeg2 video (960x540 with black bars top and bottom). The command is currently run from a bash script.

  


  ffmpeg -y -hwaccel cuda -hwaccel_output_format cuda -c:v mpeg2_cuvid -crop 960x408x0x66 -i $1 -vf scale_npp=1280x544 -c:a copy -c:v h264_nvenc -b:v 2M -preset slow $2


  


  This is throwing the following error :

  


  [mpeg2_cuvid @ 0x5e6d9deb56c0] cuvid decode callback error
[vist#0:0/mpeg2video @ 0x5e6d9de85b40] [dec:mpeg2_cuvid @ 0x5e6d9de7b7c0] Decoding error:        Generic error in an external library


  


  Have I a problem with my ffmpeg build, should the list of filters include something like crop_cuda or crop_npp or have I just got the wrong syntax to perform everything on the GPU (is it even possible).

  


• avutil : remove deprecated FF_API_H274_FILM_GRAIN_VCS

  19 février, par James Almer

  avutil : remove deprecated FF_API_H274_FILM_GRAIN_VCS
  Deprecated since 2024-03-23.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/h2645_sei.c
  • [DH] libavutil/film_grain_params.h
  • [DH] libavutil/version.h