[Dvdauthor-users] mplex error: "Too many frame drops"

[Christopher A. <qui...@ga...>]

>QuEnc 0.63 using the following parameters:
>
>  
>
First check your using the latest version of Quenc....some older version 
have builtin problems coming from ffmpeg.

>"QuEnc -i "D:\FILMES\teste\avisynth_script.avs" -o
>"D:\FILMES\teste\Encoded_video.m2v" -b 9152 -maxbitrate 9152 -mpeg2
>-maxbframes 2 -vbr -dc 10 -gopsize 18 -priority 5 -hq -notrell -2
>-aspectratio 4:3 -auto -close"
>
>  
>
The above comand line looks fine, although gopsize maybe should be 15

>When i mux it with an audio file using mplex, it returns the following
>error:
>
>   INFO: [???] mplex version 2.2.2 ($Date: 2003/05/13 20:27:15 $)
>   INFO: [???] File D:\FILMES\teste\Video_pulled.mpv looks like an MPEG
>Video stream.
>   INFO: [???] File D:\FILMES\teste\Fixed_audio.ac3 looks like an AC3 Audio
>stream.
>   INFO: [???] Video stream 0: profile 8 selected - ignoring non-standard
>options!
>   INFO: [???] Found 1 audio streams and 1 video streams
>   INFO: [???] Selecting dvdauthor DVD output profile
>   INFO: [???] Multiplexing video program stream!
>   INFO: [???] Scanning for header info: Video stream e0
>(D:\FILMES\teste\Video_pulled.mpv) 
>   INFO: [???] VIDEO STREAM: e0
>   INFO: [???] Frame width     : 720
>   INFO: [???] Frame height    : 480
>   INFO: [???] Aspect ratio    : 16:9 display
>  
>
16:9? doesn't your command line show 4:3 for the aspect ratio?

>: [???] Stream e0: data will arrive too late sent(SCR)=2576091
>required(DTS)=0
>++ WARN: [???] Video e0: buf= 194314 frame=000683 sector=00005254
>++ WARN: [???] Audio bd: buf=  14819 frame=000889 sector=00000791
>++ WARN: [???] Stream e0: data will arrive too late sent(SCR)=2619977
>  
>
These errors are buffer underruns. You need to lower the bitrate in 
Quenc, or two pass your encode, as on the first pass, ffmpeg (the 
builtin encoder) does not obey the maxrate restrictions (it may now, I'm 
not sure, having problems in the past). Quenc did have some problems 
with this, try 8000 for your bitrate, upgrade Quenc (if necessary) and 
try two pass encoding.

Also this message appears to be off-topic. Try the mjpeg-tools list.


Christopher Armstrong