"libvo_aacenc" creates longer sound
Im trying to figure why ffmpeg "libvo_aacenc" always creates longer sound. Have someone else noticed this?
The video when converting to mp4 is always spot on ( if i use "-x264opts b-pyramid=0" ). But the sound is always approximately 0.2-0-4 secs to long.
Longer sound, like the whole thing is stretched? Or longer, like it starts late?
Probably going to need the full ffmpeg console output, if not a link to a sample file too.
It makes the audio longer than the video. The Video exports as 20 seconds and the Audio as 20.38. Both should be 20. If I export with wav or mp3 sound the sound length is correct.
My ffmpeg 2pass command:
The Console output:
Does this also occur with the native FFmpeg AAC encoder? Also, libvo_aacenc is often considered the worst AAC encoder supported by FFmpeg, but you don't always have much choice unless you can compile.
Replace "-acodec libvo_aacenc" with "-acodec aac -strict experimental" Also, you can remove "-aprofile aac_low". I don't think either of these encoders can support anything else anyway but I may be incorrect.