- JPEG 2000 decoder
- new asetpts filter (same as setpts, but for audio)
- new trim and atrim filters
-- avconv -t option is now sample-accurate when transcoding audio
+- avconv -t and -ss (output-only) options are now sample-accurate when
+ transcoding audio
+- Matroska muxer can now put the index at the beginning of the file.
+- avconv -deinterlace option removed, the yadif filter should be used instead
version 9: