#34 2-pass AAC encoding

closed
nobody
None
5
2009-02-03
2008-01-24
LRN
No

"--pass <1|2>"
enables 2-pass rate control
1 - first pass (creates stat-file)
2 - second pass (uses stat-file to adjust bitrate)

"--stats <path>"
filename of stat-file to readfrom/writeto (depends on "--pass")

Goal: improve bitrate distribution (improves quality) AND improve output file size precision: output file size should not exceed <bitrate>*<length(seconds)>/8 bytes (where <bitrate> is from "-b" option). AAC header(s) and mp4 container size should be taken in account.

Discussion

  • menno
    menno
    2009-02-03

    • status: open --> closed