Why is copying mkvs on ipad sooo slow?

Discussion in 'iPad' started by chfilm, Jan 14, 2016.

  1. chfilm macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #1
    Hey,

    I was wondering why it takes FOREVER to copy some let's say 1,8 gb mkv file to vlc on the ipad pro, while copying a same sized m4v to the native videos app goes at least twice as fast?
    Am I doing something wrong? Is this apple trying to force us to convert every video file first to their native format?

    Last Night I seriously ended up re-encoding a full 50 minute episode of a tv show to m4v and copy it to the native video app and it was still faster than copying the mkv!

    Stupid enough they still dont support usb 3 on the lightning port, but this is almost unusable..
     
  2. tjwilliams25 macrumors 6502

    Joined:
    Aug 10, 2014
    Location:
    Montana
    #2
    It could be because it isn't a native container format. I'm not 100% sure. I can say, though, if that is the case you don't have to completely re-encode all of your videos to MP4. You just have to change the container. Most MKVs have video streams encoded in H.264, which is native MP4. All you have to do is remux the MKV to an MP4 which is a pretty quick process compared to completely re-encoding the video stream. I use iFlicks 2 on the Mac, but there are several free options out there as well.
     
  3. chfilm thread starter macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #3
    Hmm, it's not that.. I tried to copy an mp4 to the Vlc app, and it was similarly slow. Seems to have something to do with the way iTunes handles 3rd party apps file system or so..
     
  4. bluermlou macrumors member

    Joined:
    Feb 5, 2008
    #4
    Have you tried any other third party video apps to compare? I am currently using nPlayer, and upload times from my computer aren't that bad.
     
  5. chfilm thread starter macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #5
    Yes, I've had the same slow speed both in AVPlayerHD and VLC.
     
  6. Badrottie Suspended

    Badrottie

    Joined:
    May 8, 2011
    Location:
    Los Angeles
    #6
    If you if you are tired of slow transfer then I would suggest you buy wireless mobile hard drive such as Seagate Wireless Plus you will be able to stream video (any formats) from Seagate app wirelessly.
     
  7. dyt1983 macrumors 65816

    Joined:
    May 6, 2014
    Location:
    USA USA USA
    #7
    No answer or solution, but two suggestions:

    1) I copy my MKV files to VLC on the iPad wirelessly by connecting to the iPad's VLC from my Mac's browser, then just drag and drop the videos. Wireless SHOULDN'T be faster than a wired connection, but from what you describe it might still be faster, assuming you have all ac wireless hardware.

    2) Since VLC doesn't support AC3, I've started using Subler on my Mac to re-encapsulate my videos from MKV to MP4, and adding an AAC track when necessary. The conversion from AC3 to AAC only takes a few seconds and since the video is usually already H.264 it gets passed through without reencoding. So it's only a few seconds for each file in the queue, and then if you're doing a lot of videos at once, you can use iTunes to copy them over the cable since you don't seem to have a speed issue with MP4 files.

    I almost never fire up Handbrake anymore (and when I want to, it's just to rip a disc, and unfortunately none of my primary machines have optical drives).
     
  8. chfilm thread starter macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #8
    thanks for the great advice with subler!
    Is there any trick though to make it super fast? It still takes like a minute or so for me to repack one episode or a tv show for example..
     
  9. JackieInCo macrumors 601

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #9
    I prefer iFlicks over Subler. My 2015 MBP processes a typical 4-8GB movie in less than a minute and it gets all the proper tags and artwork automatically. It then adds them to iTunes where I can view them on my ATV or sync to my devices.
     
  10. Osty macrumors 6502a

    Joined:
    Jul 15, 2008
    Location:
    Melbourne, AU
    #10
    You don't need to re-encode from scratch - in fact you'll lose quality if you do - just change the contain format assuming your streams are in iPad compatible formats (H.264 and AAC). Use Subler as dyt1983 suggests or if you are comfortable on the command line, use FFMPEG: it's a one-line command and it is screaming fast. Most GUI utilities use FFMPEG, so you're just cutting out the middle man :)
     
  11. dyt1983 macrumors 65816

    Joined:
    May 6, 2014
    Location:
    USA USA USA
    #11
    If you're going to use iTunes and the Video app on your iPad, turn off the AAC conversion... I only use the AAC since I'm a VLC user (and VLC current versions won't play AC3). That should make it just copy the data to a new file. Even mkvtools/mp4tools can do this too, it's just that Subler made it easier (for most) to also add the AAC for VLC so I could upload them to VLC's built-in server. Oh, it also made it simple to fix some aspect ratio issues I had without reencoding (4:3 shows displaying as 16:9).

    Agreed, I use ffmpeg to do a batch because it's simple to make a script.
     
  12. chfilm thread starter macrumors 65816

    chfilm

    Joined:
    Nov 15, 2012
    Location:
    Germany
    #12
    wow, iflicks is the solution I've been looking for since ages!! Thank you so much!
     
  13. Osty macrumors 6502a

    Joined:
    Jul 15, 2008
    Location:
    Melbourne, AU
    #13
    Great minds think alike :)
     

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