BLIND-FROM-VIDEO(1)

NAME
blind-from-video - Converts a regular, cooked video to a blind video

SYNOPSIS
blind-from-video [-r frame-rate] [-w width -h height] [-dL] input-file output-file

DESCRIPTION
blind-from-video converts the video, in the file input-file, to a format usable by the blind tools, and prints the new video to the file output-file. input-file and, unless -L is used, output-file must be regular files. input-file must be a normal video file with a container (i.e. not raw video) that is supported by ffmpeg(1). It is unspecified what happens if input-file does not have exactly one video stream. All non-video streams, such as audio and subtitles are discarded.

OPTIONS

-d  Perform coarse colour-model conversion. This will increase the performance of the conversion, but modifications to the colours will not produce the expected colours. This is useful for drafting or if you will not modify the colours. If you use this flag, you should also use it in blind-to-video(1), otherwise the colours will be modified.

-h height
    Change the height of the video to height.

-L  Write to stdout that the number of frames in the video is 0. This allows you to use a non-regular file, including a pipe, as output-file. If you specify '-' as the output-file, the video is printed to stdout. This option is useful if you want to split a video, into multiple videos, as it allows to to split the video without having to store the entire raw video to disc. If you use this option, you can use blind-split(1) to write the actual number of frames to the head, if this is needed.

-r frame-rate
    Change the frame rate of the video to frame-rate. This value can be a rational.

-w width
    Change the width of the video to width.

SEE ALSO
blind(7), blind-to-video(1), blind-split(1), blind-rewrite-head(1)

AUTHORS
Mattias Andrée <maandree@kth.se>