[MEncoder-users] Converting H.264-AVC 1920 X 1080 to mpeg-2

[James Hastings-Trew]

L Lee wrote:
> On 2/9/09 12:03 AM, I <llee040 at sbcglobal.net> wrote:
>
>   
>> I have some h.264 mp4 source files that I would like to convert to mpeg-2 to
>> create standard DVDs.
>>     
> I now realize I can't get past "writing header" until I include encoding of
> audio with something like "-oac lavc".
>
> But my output is all gray with patches of splotchy video. Is there any way
> for me to fix the problem that results in messages like these?
>
> ----
> [h264 @ 0x181e800]reference picture missing during reorder:0.037 [4105:192]
> [h264 @ 0x181e800]Missing reference picture
> [h264 @ 0x181e800]illegal short term buffer state detected
> ----
>   
What version of mencoder are you using? I used to have errors like these 
using mencoder to encode files from certain blu-ray titles (one in 
particular was Sunshine). Using the latest builds, the problem has gone 
away.

Another thing to try is to actually play the file you want to encode 
with mplayer. In my case, the problem files would "smear" at certain 
points where mencoder would show those errors. The errors were quite 
visible. Again, the problem went away when I switched up to a current 
rev. of mplayer and mencoder.