如何使用 ffmpeg 从视频文件中删除 .png 图像？

Question

尝试将 .mkv 文件转换为 .mp4，但容器中的 .png 导致错误。我该如何删除该流并只转换视频和音频？以下是错误输出

  Stream #0:0 -> #0:0 (hevc (native) -> h264 (h264_nvenc))
  Stream #0:8 -> #0:1 (png (native) -> h264 (h264_nvenc))
  Stream #0:1 -> #0:2 (dts (dca) -> aac (native))
  Stream #0:2 -> #0:3 (ac3 (native) -> aac (native))
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[h264_nvenc @ 0x555781cb73c0] Cannot load libcuda.so.1
Error initializing output stream 0:1 -- Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!