Opened 15 years ago
Last modified 13 years ago
#1520 new defect
Start position specified to mencoder with -ss interpreted incorrectly
| Reported by: | Owned by: | reimar | |
|---|---|---|---|
| Priority: | normal | Component: | vd |
| Version: | HEAD | Severity: | normal |
| Keywords: | Cc: | reimar | |
| Blocked By: | Blocking: | ||
| Reproduced by developer: | no | Analyzed by developer: | no |
Description
I have this file:
ID_AUDIO_ID=1
ID_VIDEO_ID=2
ID_FILENAME=old.wmv
ID_DEMUXER=asf
ID_VIDEO_FORMAT=WMV3
ID_VIDEO_BITRATE=521712
ID_VIDEO_WIDTH=1152
ID_VIDEO_HEIGHT=864
ID_VIDEO_FPS=1000.000
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=353
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_LENGTH=1970.00
ID_SEEKABLE=1
ID_CHAPTERS=0
ID_VIDEO_CODEC=wmv9dmo
ID_AUDIO_BITRATE=48024
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=1
ID_AUDIO_CODEC=ffwmav2
ID_EXIT=EOF
I want to encode it without the first 58 seconds. So I do:
mencoder -ss 58 -oac lavc -ovc lavc -lavcopts vcodec=ffv1 -o new.avi old.wmv
But instead of skipping 59 seconds, it skips to about the middle of the file.
I've tried to figure out exactly how the argument to -ss is being interpreted, and I just can't figure it out.
Change History (3)
comment:1 by , 15 years ago
comment:2 by , 15 years ago
| Cc: | added |
|---|
Also try -demuxer lavf, it should at least be different, sometimes more accurate.
comment:3 by , 13 years ago
| Owner: | changed from to |
|---|
(In reply to comment #0)
It's difficult to help without your input file to test against. Upload a sample.