Transcode

Transcode is an open source and free command-line software that contains a collection of tools for transcoding audio and video files, as well as to convert between various container formats. It can import DVD-Video discs or record the signal captured from any Video4Linux-compatible device.

This tool uses modules to transcode audio and video files. Currently, it integrates several modules that allow you to import MPEG video streams, YUV4MPEG streams, MPEG elementary (ES) streams, VOB files (program streams), NuppelVideo video files, as well as compressed (pass-through) or RAW video streams.

Also based on modules, the export capabilities of the software will allow you to output files in the MPEG-1/2, XviD, DV (Digital Video), uncompressed AVI files with PCM, AC3 (pass-through) or MPEG audio, DivX 4.02, DivX 5.xx or DivX;-) file formats.

Features at a glance

The program has been engineered in such a way that it can encode and decode as many audio and video streams as possible, including MPEG-1/2, MPEG-4, DivX, XviD, Quicktime, MPEG-PS, MP3 and AC3. It supports threads and shared libraries.

In addition, the software includes numerous video and audio pre- and post-processing filters, including video de-interlacing, audio resampling, framerate conversion, smoothing, and cutting. Supports basic audio and video frame transformations, and lets you to quickly resize video frames or load external filters.

Command-line options

Being a command-line utility, Transcode comes with various options that can be viewed at a glance by running the ‘transcode --help’ command on a terminal emulator. For your convenience, the command-line options are organized in categories.

These allow you to easily interact with input, output and control files, with input stream selection, with input stream format, with output stream format, with video processing, with audio processing, with multimedia codecs, with other processing functions, as well as with cluster, chapters and PSU modes.

What is new in this release:

• Minor bugfixes

What is new in version 1.1.3:

• Support for CubicKeys4 and Sinc8 zoom algorithms.
• Support for input selection/channel tuning into import_v4l2 (backport from the 1.2.x branch)
• Fixed spurious write warnings when using -y *,tcaud (regression from 1.0).
• Fixed bugs: #15302, #15306, #15351, #15502, #15825, #15615.
• Key:
• Feature added.
• Bugfix of an existing feature.
• Changement/improvement (not bugfix) of an existing feature.
• Feature dropped.

What is new in version 1.1.2:

• Make the -W option work again like 1.0.x branch.
• Proper handling of the alpha data in filter_logoaway (avoid segfault).
• Fixed bugs: #15007, #15441.
• Allow to build x264 experimental encoder with last libx264 snapshots.
• Allow to build transcode without FFmpeg.
• Removed outdated libav* information from the FAQ.

What is new in version 1.1.1:

• The import_imlist module is deprecated.
• Use --multi_input -x im instead.
• The dectectclipping filter is now allowed to use a log file.
• A big YAIT update was done.
• The "frame" option was added to filter_text.
• tcmodinfo linking and loading problems were resolved.

What is new in version 1.0.7:

• The code was updated to be in sync with lastest FFmpeg API changes.
• The FFmpeg requirements were bumped. transcode now needs a recent snapshot of FFmpeg to work. (Snapshots between r13582 and r15261 are known to work; later versions are untested.)
• An avilib x86_64 portability problem which caused avifix problems was fixed.
• Static linking of libavcodec is now definitively unsupported.