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History of Tcdemux|
load. Examples are |
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load. Examples are "mpeg2" for MPEG video or "ac3" for audio packets. -t magic Specify the input file type magic. Useful for using tcdemux in pipelines. This is normally autodetected. -a ach[,vch] Process only packets containing given audio track ach and video track vch. Most program stream fea- ture multiple audio tracks but only a single video stream. Default is "-a 0,0". -s 0xnn Select specific multimedia track using the standard identifier 0xnn. This useful to extract subtitle packets. -f fps Specify the frame rate fps for subtitle meta infor- mation used by external applications. -S unit[,s1-s2] Select a program unit unit and a selected GOP range s1-s2 for processing. A unit is usually a set of GOPs that need to be synchronized at the very beginning. This option can be used to eleminate junk units at the beginning of the main presenta- tion or to select certain episodes of a TV series from a DVD. A GOP is a logical unit to be properly decoded, i.e., decoding can only start at the beginning of a GOP. -O Do not skip initial sequence. Used internally by transcode. -A n[,m[,...]] Select packets using an identifier for extracting only selected streams without processing. This is useful for size reduction of your multimedia stream. Example: tcdemux -i big_dvd.vob -A 0xe0,0x81,0x20 > small_dvd.vob extracts all packets for the video stream, AC3 audio track (1) and the first subtitle stream (0). -M mode Select synchronization strategy mode. This is how transcode selects the beginning of a video and audio stream to assure both streams are sychronized for further processing: 0 no synchronization. Packets are printed directly to stdout. 1 synchronization based on PTS information found in the packet header. Audio packets are delayed until a suitable starting point is found. Default for PAL videos. 2 NTSC adapted synchronization mode. Detailed information for each GOP contained in the video stream are piped to a stdout to be processed by the certain import modules. This enables adjusting the frame rate or inverse telecine, if necessary. 3 more advanced synchronization mode 1 with msec granular adjustment. Details delegated to transcode. 4 more advanced synchronization mode 2 with msec granular adjustment for NTSC materail. Details delegated to transcode. 5-7 undocumented debugging modes for internal use. -P file Write GOP meta information to file instead of tdout. -W Print a navigation log file for a given video stream to stdout. This is used for transcode's "psu mode" and "cluster mode". -d level With this option you can specify a bitmask to enable different levels of verbosity (if sup- ported). You can combine several levels by adding the corresponding values: QUIET 0 INFO 1 DEBUG 2 STATS 4 WATCH 8 FLIST 16 VIDCORE 32 SYNC 64 COUNTER 128 PRIVATE 256 -v Print version information and exit. NOTES tcdemux is a front end for de-multiplexing program streams and is used in transcode's import modules. EXAMPLES The command tcprobe -i movie.vob -x mpeg2 extracts only MPEG video packets. Further processing, i.e., extracting the elementary video stream is done by tcextract. AUTHORS tcdemux was written by Thomas Ostreich <ostreich@theorie.physik.uni-goettingen.de> with contribu- tions from many others. See AUTHORS for details. SEE ALSO avifix(1), avimerge(1), avisplit(1), tcdecode(1), tcde- mux(1), tcextract(1), tccat(1), tcscan(1), transcode(1) |