![]() In addition to this, the most important setting you'll need to pay attention to is the first (but not the second!) 64-bit checkbox, 64 bits chunk offset, upon saving. ![]() comment on HERE), this default setting (always force AAC transcoding) still hasn't made its way to Subler.) While some users have recommended (see e.g. (If you forget to force the app to convert AC3 to AAC audio, it'll leave AC3 track(s) in the target M4V file, rendering the given track (or the entire video) unplayable. (Of course, then, I still needed to add the subtitle track(s) manually – a completely unnecessary step with a conversion entirely done by Subler.)įirst, you will need to check the " Convert AC-3 audio to AAC" box in Preferences > Audio if you want (originally) AC3 soundtracks to be played by, among other things, iTunes on the desktop: I had no such problems with avidemux at all: it happily opened the file and converted it to M4V, also converting the originally AC3 5.1 audio track to AAC. In my tests, Subler refused to open some (not many), huge (slightly over 20 Gbytes) 1080p MKV videos (23.976 fps/16 Mbps/ 1920x1078/x264/2pass/L4.1). No need to open / save each MKV manually! An example: you let it remux an entire directory of MKV files in the morning, and, some hours later, it's finished. it even has a command-line interface, making it possible to do batch conversations. It's not only able to do this during the MKV > M4V remuxing, but with already-existing M4V files as well! it lets for changing the H.264 level of the videos to a value already accepted by iTunes, should you want to play it back in the stock Videos app delivered on your iDevice, as opposed to a third-party player. just like avidemux, it does convert both AC3 and DTS soundtracks (both 5.1 ones) to the both iTunes- (which doesn't play AC3 tracks) and iOS-friendly (stereo) AAC format, and unlike several even commercial tools like the MKV remuxer in Playback or the desktop converter of Sub Video Player. However, in a full MKV -> M4V roundup, it should be discussed too.įirst, it's also a first-class MKV -> M4V converter if you know its limitations and how it compares to the other remuxer tools. In them, for the compatibility problems I'll soon describe, I've only discussed its excellent subtitle addition capabilities. ![]() I've discussed the (Mac OS X-only) Subler in several of my articles (the first one is HERE). Let's start with the easiest, free approach that can handle most of the input videos. Fortunately, it's way easier and faster than many would think. There's (still) no jailbreak for the iPad 3 (or in case you won't want to use it it's released), so, we're stuck with, currently, the only viable way of playing back MKV's: converting (from now on, I use the official term “ remuxing” to denote it's basically only the container that is changed, but in no way the video stream itself) them to M4V's first. ![]() Using third-party players on non-jailbroken devices, currently, is not really the way to go: even, for MKV playback, the most properly optimized player, EC Player, exhibits really nasty artefacts (video freezes for about 0.5 second every about 11 sec). This is why, as has been explained in my previous article on MKV handling and playback, you either convert the container to the already iOS-compatible MP4 / M4V / MOV (these are interchangeable from now, I refer to them as “ m4v” for simplicity) or jailbreak and use players (currently, XBMC or RushPlayer+ (quick review of the latter HERE)) that, not being constrained by Apple's very strict (and, in this case (too), absolutely unnecessary) restrictions, can utilize the hardware decoder to correctly decode the video. Software-only decoding in third-party video players is useless over 720p resolutions (for example, at 1080p), no matter what some people say. Unfortunately, as has already pointed out in several of my articles, it can't be played back on iDevices natively that is, with hardware-assisted decoding. MKV, because of its being both open and very flexible, is a highly popular video container format today this is why iOS forums are full of discussions of using, playing it (see for example THIS, new thread).
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