Xvids to Mp4s without transcoding?

Discussion in 'Apple TV and Home Theater' started by GeekOFComedy, Apr 26, 2011.

  1. macrumors 6502a

    Joined:
    Sep 29, 2008
    Location:
    Ireland
    #1
    Hi there, is it possible to get XVids to MP4 without transcoding the video, Transcoding the audio is fine as that's easy but Transcoding 720p video is a timely process. From what I understand Xvid is a variation of the mpeg4 codec. However When I do a passthrough in visual hub it wont open. I change it to m4v so it works however when I try to play it on my AppleTV or iPad or iPhone I just get the audio and no video.

    For a batch of my files here are the Xvid settings:
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    The iDevices need the H.264 codec and Divx or Xvid are not H.264, thus there is no way around transcoding unless you use some service, where you stream to your iDevice, like AirVideo.
     
  3. macrumors member

    Joined:
    Jan 11, 2010
    #3
    You could import in isubtitle and export to apple tv;
    For some reason, it takes ~ 10 mins only for a 700Mb file, but the file size gets doubled;
     
  4. AdrianK, Apr 26, 2011
    Last edited: May 6, 2011

    macrumors 68020

    Joined:
    Feb 19, 2011
    #4
    The MPEG4 standard is extremely broad, Apple does not provide decoders for every part of it. Xvid is H263 (which is part 2), which Apple does not provide support 4, you *will* have to re-encode in order to play the file through iTunes>ATV.

    EDIT: I'm a moron, it works just fine, as pointed out by peterjcat below.

     
  5. macrumors 6502

    Joined:
    Jun 14, 2010
    #5
    Apple TV does support MPEG-4 Part 2 Simple Profile, but the listed specs only go up to 640 x 480, so if you're using 720p sources they may not work for that reason (Apple's listed specs are often conservative but there are limits). The original Xvid settings may also have incompatible options selected and so on.

    All you can do is try a remux and be happy if it works, if not resign yourself to transcoding.
     
  6. macrumors 68020

    Joined:
    Feb 19, 2011
    #6
    Good catch. I wonder if ATV would support mp3 decoding inside mp4/m4v, probably not.
     
  7. thread starter macrumors 6502a

    Joined:
    Sep 29, 2008
    Location:
    Ireland
    #7
    Remux? How?
     
  8. macrumors 6502

    Joined:
    Jun 14, 2010
    #8
    Like you're doing with VisualHub, or alternatively with Avidemux or MKVTools -- put the video into an MP4/M4V container without altering it, transcode the audio if you need to, and see if it works.
     
  9. macrumors 6502

    Joined:
    Jun 14, 2010
    #9
    I did some testing today and MakeMKV did a good job converting Xvid to M4V -- transcoding the MP3 audio to AAC, leaving the video but maybe faking the headers somewhat? Watching on my ATV2 now.
     
  10. macrumors 6502a

    Joined:
    Aug 1, 2004
    #10
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A306 Safari/6531.22.7)

    I've found that 99% of new releases in AVI container with mpeg4 work just fine on AppleTV2 with pass thru for video.

    Of course search for releases in 264. Most groups post this info in the torrent name.

    My only problem is that ac3 5.1 is the most popular audio codec which sucks because I don't use my optical out.
     
  11. macrumors regular

    Joined:
    Sep 3, 2006
    #11
    The ATV 2 can play Mpeg-4 ASP too, so a remux should work.
     
  12. macrumors 6502

    Joined:
    Jun 14, 2010
  13. macrumors 6502a

    Joined:
    Aug 1, 2004
    #13
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    Nope. The ATV2 doesn't support mp3 in video formats. Which is lame because it plays music mp3's just fine.
     
  14. thread starter macrumors 6502a

    Joined:
    Sep 29, 2008
    Location:
    Ireland
    #14
    Update: it doesn't work so I ended having to transcode 24 episodes. Next one:

    How about Divx 4 codec? Anyway we can do passthroughs on them?
     
  15. macrumors newbie

    Joined:
    Nov 25, 2008
    #15
    Hey all,

    I am also wondering this same question. The divx and xvid mpeg4 video streams seem to stutter (on playback) when remuxing from avi into mp4. I wish this were not the case as it would be a lot easier to remux and just convert the audio from mp3 to aac and let the video passthru. But for some reason all my avi's with divx or xvid stuttter on playback after being remuxed.

    Whats the deal?
     
  16. macrumors 6502

    Joined:
    Jun 14, 2010
    #16
    What are you using to play the remuxed files? I find that they stutter when played on the Mac with iTunes/Quicktime X, but they're fine on the iPhone/iPad or on the Mac using VLC/Plex or even Quicktime 7 with Perian.
     

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