#MOVFLAGS="-movflags +frag_keyframe+empty_moov+default_base_moof+faststart"
MOVFLAGS="-movflags +faststart"

VIDEO_H263="-vcodec h263"
VIDEO_H263_PLUS="-vcodec h263p"

AUDIO_AAC="-acodec aac -ac 1 -ar 44100 -ab 112k"

ffmpeg -i polyphon.ogv -vf "drawtext=text='h263-aac-288p@1M.3gp':fontsize=72:fontcolor=brown, scale=352:288" $VIDEO_H263 -vb 1024k $AUDIO_AAC $MOVFLAGS -y polyphon-h263-aac-1m.3gp || exit 1
ffmpeg -i polyphon.ogv -vf "drawtext=text='h263-aac-288p@2M.3gp':fontsize=72:fontcolor=yellow, scale=352:288" $VIDEO_H263 -vb 2048k $AUDIO_AAC $MOVFLAGS -y polyphon-h263-aac-2m.3gp || exit 1
ffmpeg -i polyphon.ogv -vf "drawtext=text='h263-aac-288p@4M.3gp':fontsize=72:fontcolor=red, scale=352:288" $VIDEO_H263 -vb 4096k $AUDIO_AAC $MOVFLAGS -y polyphon-h263-aac-4m.3gp || exit 1
ffmpeg -i polyphon.ogv -vf "drawtext=text='h263-aac-288p@8M.3gp':fontsize=72:fontcolor=violet, scale=352:288" $VIDEO_H263 -vb 8192k $AUDIO_AAC $MOVFLAGS -y polyphon-h263-aac-8m.3gp || exit 1