$ /Applications/Video/mp4box_EvalVid/MP4Box -h import
Importing Options
File importing syntax:
"#video" "#audio": base import for most AV files
"#trackID=ID": track import for IsoMedia and other files
"#pid=ID": stream import from MPEG-2 TS
":dur=D": imports only the first D seconds
":lang=LAN": sets imported media language code
":delay=delay_ms": sets imported media initial delay in ms
":par=PAR": sets visual pixel aspect ratio (PAR=Num:Den)
":name=NAME": sets track handler name
":fps=VAL": same as -fps option
":agg=VAL": same as -agg option
":par=VAL": same as -par option
":dref": same as -dref option
":nodrop": same as -nodrop option
":packed": same as -packed option
":sbr": same as -sbr option
":sbrx": same as -sbrx option
":mpeg4": same as -mpeg4 option
-add file: add file tracks to (new) output file
-cat file: concatenates file samples to (new) output file
* Note: creates tracks if needed
-keep-sys: keeps all MPEG-4 Systems info when using '-add' / 'cat'
-keep-all: keeps all existing tracks when using '-add'
* Note: only used when adding IsoMedia files
All the following options can be specified as default or for each track.
When specified by track the syntax is ":opt" or ":opt=val".
-dref: keeps media data in original file
-no-drop: forces constant FPS when importing AVI video
-packed: * forces packed bitstream when importing raw ASP
-sbr: backward compatible signaling of AAC-SBR
-sbrx: non-backward compatible signaling of AAC-SBR
* Note: SBR AAC cannot be detected at import time
-fps FPS: forces frame rate for video and SUB subtitles import
* For raw H263 import, default FPS is 15
* For all other imports, default FPS is 25
-- THIS IS IGNORED FOR IsoMedia IMPORT --
-mpeg4: forces MPEG-4 sample descriptions when possible (3GPP2)
-agg N: aggregates N audio frames in 1 sample (3GP media only)
* Note: Maximum value is 15 - Disabled by default
