transcode 命令

常用示例

说明

transcode is a Linux video stream processing tool for converting between video and audio formats. It uses a modular architecture with separate import and export modules for different codecs and containers. The tool supports filtering operations including resizing, cropping, deinterlacing, and volume adjustment. It can extract audio tracks separately and perform multi-pass encoding for better quality. Transcode has been largely superseded by FFmpeg, which offers broader format support and more active development.

参数

-i _FILE_

Input file (required). The only mandatory option.

-o _FILE_

Output file.

-x _MODULE_

Import module (e.g., vob, dvd, raw). Determines how input is decoded.

-y _MODULE_,_AMODULE_

Export module for video, optionally with a separate audio export module (e.g., xvid,lame).

-Z _WxH_,_MODE_

Resize video using zoom. Append "fast" for fast zoom mode (e.g., 640x480,fast).

-j _TOP_,_LEFT_,_BOTTOM_,_RIGHT_

Crop pixels from the image borders. Two values are expanded symmetrically.

-w _BITRATE_

Video encoder bitrate in kbps.

-b _BITRATE_

Audio encoder bitrate in kbps.

-m _FILE_

Write audio output to a separate file.

-p _FILE_

Read audio from an external file instead of the main input.

-c _RANGE_

Encode only the specified frame range (e.g., 0-5000 or 0:05:00-0:10:00).

-s _FACTOR_

Adjust audio volume by the given factor (e.g., 4.47 to increase).

-R _N_,_FILE_

Multi-pass encoding. Use -R 1 for first pass and -R 2 for second pass.

-T _TITLE_

Select a DVD title to process.

--multi_input

Enable batch processing of multiple input files.