[FFmpeg-devel] Convert for Iphone and another profiles

[Dang Son]

Dear All

I use ffmpeg library to develop a tool that support to convert video to
iphone video and nokia, blackberry ....

ffmpeg -i video.mp4 -f mpegts -acodec libmp3lame -ar 48000 -ab 64k -s
320?240 -vcodec libx264 -b 800k -flags +loop -cmp +chroma -partitions
+parti4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16
-keyint_min 25 -sc_threshold 40  -i_qfactor 0.71 -bt 200k -maxrate 800k
-bufsize 800k -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51
-qdiff 4 -level 30 -aspect 320:240 -g 30 -async 2 sample_800k_pre.ts -f mp4
-vcodec mpeg4 -b 400k -r 24 -s 320x240 -aspect 4:3 -acodec libfaac -ar 22050
-ac 2 -ab 48kb video_blackberry.mp4  -acodec libmp3lame -ab 128kb -ar 44100
-vcodec mpeg2video -s 320x240 -b 600kb -strict -1 video.mpg
--> cannot convert

I try to convert to multi profile concurrency to save time. But it is not
successful. When I remove convert to iphone video it's successful.

ffmpeg -i video.mp4 -vcodec mpeg4 -b 400k -r 24 -s 320x240 -aspect 4:3
-acodec libfaac -ar 22050 -ac 2 -ab 48kb video_blackberry.mp4  -acodec
libmp3lame -ab 128kb -ar 44100 -vcodec mpeg2video -s 320x240 -b 600kb
-strict -1 video.mpg
--> successfully

So can you explain to me???

Best regard

thanks