VideoHelp Forum




+ Reply to Thread
Results 1 to 7 of 7
  1. 16th Oct 2022 07:58 #1
    elektro
    elektro is offline
    Member
    Join Date
    May 2011
    Location
    Sweden
    Search PM
    I'm converting a MPEG2 with PCM audio to MP4 AVC with AAC audio. I can't decide between using 224 kbps or 384 kbps for audio: 384 is obviously better but will be some compatibility issues (players that can't play it)? Is 384 overkill? Space is not an issue in this case.
    Quote Quote  
  2. 16th Oct 2022 08:19 #2
    ProWo
    ProWo is offline
    Member ProWo's Avatar
    Join Date
    Dec 2019
    Search PM
    2 channels or 6 channels?
    For aac a good choice is 64k x channel.
    Last edited by ProWo; 16th Oct 2022 at 08:27.
    Quote Quote  
  3. 16th Oct 2022 08:33 #3
    elektro
    elektro is offline
    Member
    Join Date
    May 2011
    Location
    Sweden
    Search PM
    Originally Posted by ProWo View Post
    2 channels or 6 channels?
    For aac a good choice is 64k x channel.
    2 channels (stereo), 48 kHz
    Quote Quote  
  4. 16th Oct 2022 08:45 #4
    Skiller
    Skiller is offline
    Member Skiller's Avatar
    Join Date
    Oct 2013
    Location
    Germany
    Search PM
    384 KBit/s is way overkill for stereo AAC. Even 224 is more than enough to sound transparent even with good headphones and ears.
    Quote Quote  
  5. 16th Oct 2022 08:45 #5
    JAX75
    JAX75 is offline
    Member
    Join Date
    Jul 2013
    Search PM
    Originally Posted by elektro View Post
    I'm converting a MPEG2 with PCM audio to MP4 AVC with AAC audio. I can't decide between using 224 kbps or 384 kbps for audio: 384 is obviously better but will be some compatibility issues (players that can't play it)? Is 384 overkill? Space is not an issue in this case.
    EAC3 224kbps and an excellent choice especially if you have no problem for the weight of the audio EAC3 see AC3 will give you better results than AAC
    Quote Quote  
  6. 16th Oct 2022 08:54 #6
    elektro
    elektro is offline
    Member
    Join Date
    May 2011
    Location
    Sweden
    Search PM
    Originally Posted by Skiller View Post
    384 KBit/s is way overkill for stereo AAC. Even 224 is more than enough to sound transparent even with good headphones and ears.
    Thanks. This video I'm converting is a concert. That's why I'm trying to keep the audio bitrate relatively high.
    Quote Quote  
  7. 17th Oct 2022 02:59 #7
    hello_hello
    hello_hello is offline
    Member
    Join Date
    Mar 2012
    Search PM
    Originally Posted by elektro View Post
    I'm converting a MPEG2 with PCM audio to MP4 AVC with AAC audio. I can't decide between using 224 kbps or 384 kbps for audio: 384 is obviously better but will be some compatibility issues (players that can't play it)? Is 384 overkill? Space is not an issue in this case.
    What about using quality based encoding, as you possibly do when encoding video, and let the bitrate be whatever it needs to be?

    I generally use QAAC with it's default quality setting. The 6 channel soundtrack I just finished encoding came in at 457 kb/s.
    The only stereo soundtracks I've converted lately have been Fawlty Towers episodes. The AAC versions were around 180 kb/s.

    I think all the command line AAC encoders have a quality encoding mode these days.
    https://wiki.hydrogenaud.io/index.php?title=Apple_AAC
    https://wiki.hydrogenaud.io/index.php?title=Nero_AAC
    https://wiki.hydrogenaud.io/index.php?title=Fraunhofer_FDK_AAC
    Avisynth functions Resize8 Mod - Audio Speed/Meter/Wave - FixBlend.zip - Position.zip
    Avisynth/VapourSynth functions CropResize - FrostyBorders - CPreview (Cropping Preview)
    Quote Quote  



Similar Threads

« Previous Thread | Next Thread »
Visit our sponsor! Try DVDFab and backup Blu-rays!