I'm trying to make some video files for the psp in the 480x272 resolution and 23.976fps but 3gp converter just won't let me.Here's the lines i add in the ini for the settings.

[Item18]
Title=480x272/23.976fps/768kbps ƒXƒeƒŒƒI/128kbps
TitleE=480x272/23.976fps/768kbps Stereo/128kbps
Command0=""<%AppPath%>\cores\ffmpeg" -y -i "<%InputFile%>" -title "<%Title%>" -timestamp "<%TimeStamp%>" -bitexact -vcodec xvid -s 480x272 -r 23.976 -b 768 -acodec aac -ac 2 -ar 24000 -ab 64 -f psp "<%OutputPath%>M4V<%RandomNumber5%>.MP4""
Command1=""<%AppPath%>\cores\ffmpeg" -y -i "<%InputFile%>" -f image2 -ss 5 -vframes 1 -s 160x120 -an "<%OutputPath%>M4V<%RandomNumber5%>.THM""

But the resulted .mp4 has 0k size.