Opened 14 years ago
#1758 new defect
XVid codec is too restrictive on Profile Levels
| Reported by: | Owned by: | reimar | |
|---|---|---|---|
| Priority: | normal | Component: | ve |
| Version: | unspecified | Severity: | normal |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Reproduced by developer: | no | Analyzed by developer: | no |
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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