ClipReady
ClipReady vs Subler
Subler is free, well made, and has been the answer to “how do I get this into an MP4 on a Mac” for well over a decade. If you are building a library for Apple TV or the Music app, tagging it properly with artwork and metadata, Subler is the right tool and this comparison will not change your mind.
People end up comparing the two because Subler and ClipReady share one mechanism, since both remux without re-encoding the picture, and then diverge completely on what happens next.
The shared half
Both take an MKV, lift the encoded video out, and write it into an Apple container without decoding a frame. Same picture, no generation loss, fast. That part is genuinely the same idea.
Where they diverge
| Subler | ClipReady | |
|---|---|---|
| Built for | Library and metadata tagging | Editorial handoff |
| Output | MP4 only | MOV or MP4 |
| Metadata and artwork | Extensive, its main strength | Not its job |
| Frame timing | Passed through as found | Repaired onto an exact grid |
| Surround layout | Not verified | Named and checked against Apple’s decoder |
| Lossless surround audio | Limited | Decoded to 24-bit PCM |
| SMPTE timecode track | No | Written at the output rate |
| Per-track plan before running | No | Yes, with the reason for each verdict |
| Price | Free | $9.99, once |
MP4 only matters more than it sounds. Final Cut Pro and Compressor prefer MOV, and if your source video is MPEG-2, as most film DVDs are, MOV is the safer container by some distance.
The timing is the real gap. Subler carries MKV’s millisecond timestamps into the new file, because that is what a faithful remux does. Final Cut then reads the average of a jittering 41/42 ms cadence and reports about 23.81 fps. The file is not damaged; the clock inside it simply cannot express 23.976, and nothing in a plain remux changes that.
Audio Apple cannot decode stays undecodable. A DTS-HD Master Audio track remuxed into an MP4 is still a silent track in QuickTime. It has to be converted to reach Apple’s stack, and converting it correctly means writing a named channel layout too.
A note on the “pixelated in Final Cut” reports
You will find forum threads where a Subler-produced file looks soft or wrong in Final Cut. It is worth being precise about this, because the obvious conclusion is the wrong one: a remux cannot change your pixels. What it can do is hand Final Cut a file whose frame rate, field order, or color tagging is described in a way Final Cut interprets differently from your player, and the result is a picture that looks different without any pixel having changed.
That is a description problem, not a quality problem, and it is exactly the class of thing a preparation tool exists to get right.
The honest summary
If you are tagging a media library, use Subler. It does something ClipReady does not do at all, and it does it for free.
If the file is going into a timeline, remuxing is necessary but not sufficient. The container is one of four things standing between a disc- sourced MKV and a clean edit, and Subler fixes one of them.
Related
- ClipReady — the app this page describes
- ClipReady vs HandBrake
- Remux MKV to MP4 or MOV on a Mac