Gmerlin transcoder

This is a transcoder for all multimedia formats, for which input plugins exist. It has a track queue, which lets you configure the options for each track. If you start transcoding, all tracks of the list will be transcoded in a batch process.

Below you see some screenshots. Click the images to enlarge them

The main window	General track configuration	Metadata configuration
Libquicktime encoder configuration	Audio settings	Video settings
Configuration of the deinterlacing filter	Options for rendering text subtitles	Configuration of the H.264/AVC encoder
Configuration for audio CD creation

General features

Encoder options can be configured for each Audio/Video stream individually
Default settings, which will be used for newly added tracks, are configured globally.
You can load/save profiles: Once you found your favourite settings for a particular transcoding task, save it as a profile. Then, whenever you loaded the profile, you can simply drag tracks into the tasklist and transcode them.
Task lists including all settings can be saved for later use.
Audio downmixing and resampling support
Simple framerate converter (works by droppping/repeating pictures).
Support for nonconstant framerates and nonsquare pixels.
You can drag files, URLs or tracks from the gmerlin player, filenamagers or webbrowsers into the task list.
All streams of the source go either into one file or into separate files. Unneeded streams can be disabled.
Text subtitles can be exported in various formats or converted to graphic subtitles.
Graphic subtitles can be blended onto video streams or exported separately.
Encoded files can further be postprocessed.
Support for 2-Pass transcoding
Support audio volume normalization.
Automatic channel reordering when transcoding multichannel audio streams.
Support for audio- and video filters.

Output formats

Output formats cover a wide range from highly compressed consumer formats to uncompressed formats for later editing. Since it reads and writes fairly compatible Quicktime files, it can be used in conjunction with video editors like cinelerra or openmovieeditor.

For a full list of supported output formats, see the sections about Audio encoders, Video encoders, text- and overlay subtitle encoders and Audio/Video encoders.