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last edited 18 years ago by holzi
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Documentation of the various IO APIs:

GStreamer

GStreamer uses a plugin system and is divided into 5 plugin modules:

Some worth reading resources:

FFmpeg

Supported formats

See: http://ffmpeg.mplayerhq.hu/ffmpeg-doc.html#SEC22

Access

Reading: Good documentation at: http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html

Quicktime4Linux

Supported Formats

see: http://heroinewarrior.com/quicktime/codecs.html

Access

Reading:

-quicktime_check_sig("path");

Checks if it is a Quicktime-movie

-file = quicktime_open("test.mov", 1, 0));

Opens the file; 2nd argumet for read acces, 3rd for write access

-int quicktime_supported_video(quicktime_t *file, int track);

Checks if the data of the track can be decoded

-void quicktime_set_cmodel(quicktime_t *file, int colormodel);

Sets colormodel before decoding (default is BC_RGB888)

-long quicktime_decode_video(quicktime_t file, unsigned char *row_pointers, int track);

Decodes the video frame into a buffer (**row_pointers) and advances the current position.

-int quicktime_set_video_position(quicktime_t *file, long frame, int track);

Sets the position of the video track

-int quicktime_seek_end(quicktime_t *file);

Seeks all track to their end

-int quicktime_seek_start(quicktime_t *file);

Seeks all track to their start

-quicktime_close(quicktime_t *file);

Closes the file

Writing:

-quicktime_set_video(quicktime_t file, int tracks, int frame_w, int frame_h, float frame_rate, char compressor);

Sets up tracks to write to at an opened file; for the librarys build-in compressor you can specify a compressor #define from quicktime.h as this argument.

-int quicktime_supported_video(quicktime_t *file, int track);

After setting up tracks you should check if the codec of the track is in the library

-int quicktime_writes_cmodel(quicktime_t *file, int colormodel, int track);

Checks if it the colormodel requires downsampling

-quicktime_set_cmodel(quicktime_t *file, int colormodel);

If the colormodel doesn't require downsampling you can call this to set the colormodel of the framebuffer ???

-int quicktime_encode_video(quicktime_t file, unsigned char *row_pointers, int track);

Encodes the frame pointed to by **row_pointers, writes it down at the current position of the track and advances the current position; returns 0 for failure and 1 for success

libAVIfile

Supported formats

see: http://avifile.sourceforge.net/formats.htm

QuickTime

Supported formats

see: http://developer.apple.com/documentation/QuickTime/RM/MovieBasics/MTOpenPlayMovies/index.html#//apple_ref/doc/uid/TP40000919

DirectShow

Supported formats

see: http://msdn2.microsoft.com/en-us/library/ms787745.aspx

Access

playing see: http://msdn2.microsoft.com/en-us/library/ms783787.aspx

Video 4 Linux 2
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