[MPlayer-users] frames skipped when grabbing DVD

[Alexander Roalter]

On 07.06.2010 19:16, Matus UHLAR - fantomas wrote:
> Hello,
> 
> I am trying to grab DVD to a local file and have issues.
> 
> mencoder -ovc copy -oac copy -frames 1000 -o dvd-1000.avi dvd://1
> 
> - I get many "Skipping frame!" errors:
> 
> Pos:  19.6s    983f ( 0%) 226.71fps Trem:  25min 2617mb  A-V:0.058 [2950:191]
> Skipping frame!
> Pos:  19.7s    985f ( 0%) 227.17fps Trem:  25min 2619mb  A-V:0.058 [2945:191]
> Skipping frame!
> Pos:  19.7s    987f ( 0%) 227.63fps Trem:  25min 2620mb  A-V:0.057 [2941:191]
> Skipping frame!
> Pos:  19.8s    989f ( 0%) 228.09fps Trem:  25min 2621mb  A-V:0.057 [2937:191]
> Skipping frame!
> Pos:  19.8s    991f ( 0%) 228.50fps Trem:  25min 2622mb  A-V:0.057 [2932:191]
> Skipping frame!
> Pos:  19.8s    993f ( 0%) 228.96fps Trem:  25min 2624mb  A-V:0.057 [2928:191]
> Skipping frame!
> Pos:  19.9s    995f ( 0%) 229.42fps Trem:  25min 2625mb  A-V:0.057 [2923:191]
> Skipping frame!
> Pos:  19.9s    997f ( 0%) 229.88fps Trem:  25min 2626mb  A-V:0.057 [2919:191]
> Skipping frame!
> Pos:  20.0s    999f ( 0%) 230.34fps Trem:  25min 2627mb  A-V:0.056 [2915:191]
> Skipping frame!
> Writing index...00f ( 0%) 230.57fps Trem:  25min 2627mb  A-V:0.056 [2915:191]
> 
> 
> When I add the "-noskip" option, first few frames are OK but later I get
> this error:
> 
> Writing header...
> ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
> Writing header...
> ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
> Pos:   0.9s     22f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.084 [0:192]
> Skipping frame!
> Pos:  38.5s    964f ( 0%) 235.93fps Trem:  15min 3512mb  A-V:0.058 [3183:192]]
> Too many video packets in the buffer: (4096 in 8249187 bytes).
> Maybe you are playing a non-interleaved stream/file or the codec failed?
> For AVI files, try to force non-interleaved mode with the -ni option.
> Pos:  38.7s    969f ( 0%) 234.62fps Trem:  15min 3496mb  A-V:0.066 [3172:191]
> Too many video packets in the buffer: (4096 in 8249187 bytes).
> Maybe you are playing a non-interleaved stream/file or the codec failed?
> For AVI files, try to force non-interleaved mode with the -ni option.
> Pos:  38.8s    971f ( 0%) 235.11fps Trem:  15min 3494mb  A-V:0.064 [3167:192]
>  
> 
> In both cases I can't watch the movie, the first is distorted, the second
> plays too slow. 
> 
> Has anyone an idea where could be the problem or how should I continue?
> Recoding to mpeg-4 format works but I'd like to try something more without
> repeatedly reading the disc...

I'd suggest using the -dumpstream option on mplayer (not mencoder), this
delivers you the file stream.dump that holds the entire movie, as does
your example, but without the avi container.

-- 
cheers,
Alex