使用 avconv 或 ffmpeg 从 png 制作电影时出错

Question

带星号的文本需要顺序数字指示符 %d 来代替，我认为：

avconv -i 'pics/%d.png'  out.mp4
ffmpeg -r 1/1 -start_number 1 -i 'pics/%d.png' -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4

引用 avconv 手册页：

   The pattern may contain the string "%d" or "%0Nd", which specifies the position of the characters representing a
   sequential number in each filename matched by the pattern. If the form "%d0Nd" is used, the string representing
   the number in each filename is 0-padded and N is the total number of 0-padded digits representing the number.
   The literal character '%' can be specified in the pattern with the string "%%".

   If the pattern contains "%d" or "%0Nd", the first filename of the file list specified by the pattern must
   contain a number inclusively contained between 0 and 4, all the following numbers must be sequential. This
   limitation may be hopefully fixed.

   The pattern may contain a suffix which is used to automatically determine the format of the images contained in
   the files.

   For example the pattern "img-%03d.bmp" will match a sequence of filenames of the form img-001.bmp, img-002.bmp,
   ..., img-010.bmp, etc.; the pattern "i%%m%%g-%d.jpg" will match a sequence of filenames of the form i%m%g-1.jpg,
   i%m%g-2.jpg, ..., i%m%g-10.jpg, etc.

   The size, the pixel format, and the format of each image must be the same for all the files in the sequence.

   The following example shows how to use avconv for creating a video from the images in the file sequence
   img-001.jpeg, img-002.jpeg, ..., assuming an input framerate of 10 frames per second:

           avconv -i 'img-%03d.jpeg' -r 10 out.mkv

Answer 1

带星号的文本需要顺序数字指示符 %d 来代替，我认为：

avconv -i 'pics/%d.png'  out.mp4
ffmpeg -r 1/1 -start_number 1 -i 'pics/%d.png' -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4

引用 avconv 手册页：

   The pattern may contain the string "%d" or "%0Nd", which specifies the position of the characters representing a
   sequential number in each filename matched by the pattern. If the form "%d0Nd" is used, the string representing
   the number in each filename is 0-padded and N is the total number of 0-padded digits representing the number.
   The literal character '%' can be specified in the pattern with the string "%%".

   If the pattern contains "%d" or "%0Nd", the first filename of the file list specified by the pattern must
   contain a number inclusively contained between 0 and 4, all the following numbers must be sequential. This
   limitation may be hopefully fixed.

   The pattern may contain a suffix which is used to automatically determine the format of the images contained in
   the files.

   For example the pattern "img-%03d.bmp" will match a sequence of filenames of the form img-001.bmp, img-002.bmp,
   ..., img-010.bmp, etc.; the pattern "i%%m%%g-%d.jpg" will match a sequence of filenames of the form i%m%g-1.jpg,
   i%m%g-2.jpg, ..., i%m%g-10.jpg, etc.

   The size, the pixel format, and the format of each image must be the same for all the files in the sequence.

   The following example shows how to use avconv for creating a video from the images in the file sequence
   img-001.jpeg, img-002.jpeg, ..., assuming an input framerate of 10 frames per second:

           avconv -i 'img-%03d.jpeg' -r 10 out.mkv

使用 avconv 或 ffmpeg 从 png 制作电影时出错

答案1

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