commands:

for f in *.avi
  do echo "Processing $f"
 ffmpeg -i "$f" ass="${f%.*}".ass -y -s 568x320 -c:v libx264 -b:v 300000 -preset ultrafast -acodec libfaac -b:a 35000 /home/${f%.*}-300-35-ufast-test.mp4


Outputlog:

ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jul 16 2013 01:11:41 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
  configuration: --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libvo-aacenc --enable-libxvid --disable-ffplay --enable-shared --enable-gpl --enable-postproc --enable-nonfree --enable-avfilter --enable-pthreads --extra-cflags=-fPIC
  libavutil      52. 38.100 / 52. 38.100
  libavcodec     55. 18.102 / 55. 18.102
  libavformat    55. 12.100 / 55. 12.100
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 79.101 /  3. 79.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
Input #0, avi, from 'Man.Called.God.E01.450p.HAN.dramayou.com.avi':
  Metadata:
    title           : ½ÅÀ̶ó ºÒ¸®¿î »ç³ªÀÌ.E01.100306.HDTV.X264.450p-HAN¢â
    comment         : aaaa
    encoder         : VirtualDubMod 1.5.10.2 (build 2540/release) VirtualDubMod build 2540/release
  Duration: 00:58:01.41, start: 0.000000, bitrate: 1718 kb/s
    Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 800x450 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 29.97 tbn, 59.94 tbc
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s
Output #0, ass, to 'ass=Man.Called.God.E01.450p.HAN.dramayou.com.ass':
  Metadata:
    title           : ½ÅÀ̶ó ºÒ¸®¿î »ç³ªÀÌ.E01.100306.HDTV.X264.450p-HAN¢â
    comment         : aaaa
    encoder         : VirtualDubMod 1.5.10.2 (build 2540/release) VirtualDubMod build 2540/release
Output file #0 does not contain any stream