Opened 9 years ago

#1758 new defect

XVid codec is too restrictive on Profile Levels

Reported by: ccodere@… Owned by: reimar
Priority: normal Component: ve
Version: unspecified Severity: normal
Keywords: Cc:
Blocked By: Blocking:
Reproduced by developer: Analyzed by developer:

Description

Normally, according to ISO 14496-2:2001 (SP@L2) MPEG-4 Part 2 should support the following :

  • Simple Profile Level 2: 352x288@15fps OR 176x144@30fps (From the standard: 5940 MBs/s corresponds to CIF at 15 Hz and also twice QCIF at 30 Hz) but when I try to encode at that level using the Xvid codec, I get the following error:

Error:
xvid: par=0/0 (vga11), displayed=176x144, sampled=176x144
xvid:[ERROR] frame rate must be <= 15 for the chosen profile

(There might be the simple problem with ASP@L2 also)...

The script used:
REM MPEG-4 Simple Profile L2
del foreman_MPEG4_SP@…
mencoder ..\..\uncompressed\foreman_qcif@… -o foreman_MPEG4_SP@… -of rawvideo -ovc xvid -xvidencopts pass=1
mencoder ..\..\uncompressed\foreman_qcif@… -o foreman_MPEG4_SP@… -of rawvideo -ovc xvid -xvidencopts bitrate=128:pass=2:profile=sp2
..\mp4box\MP4Box -fps 30 -add foreman_MPEG4_SP@… foreman_MPEG4_SP@…

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