Hi Guys,
Just bought an ATV3 so i could airplay my macbook air to my TV screen to watch blu ray rips .. all seems great except for movies seem to be a bit laggy when playing in full screen?
Anybody know why?
Thanks!
Sorry ... its plugged into a router via wifi and my internet connection is good .. 30+MBPS.
They are straight blu ray rips? Yes MKVs.
Do they need converting to an itunes format?
downloaded handbrake and qued up a few files to convert to ATV3 format .. hope this works!
Once its done it what do i do? import said movies into itunes?
MKVs retain maximums for everything (like bitrate). TV3 can't play BD maximums (like bitrate).
My understanding is that the aTV will play bitrates higher than it's spec just fine. However, the people that have success doing this are using ethernet as wifi will not reliably carry that amount of data. I have tried using uncompressed BR files over wifi and I do not get smooth playback.Are you sure? I've tested the ATV3 with high-bitrate videos like the 40 Mbps (!!) one at http://www.auby.no/files/video_tests/h264_1080p_hp_4.1_40mbps_birds.mkv (after remuxing it with Subler). Absolutely no problems during playback. BTW, not even the A4 CPU (one-generation less than the one in the ATV3) in the iPad 1 / iPhone 4 stutters while playing back the same video.
It's only the iPhone 3GS that does have problems with this video - but even it's watchable to some degree. (Even earlier (1st and 2nd gen) small-screened iOS devices can't play back the footage at all.)
I haven't encountered stutters or dropped frames with regular, uncompressed BD rips I've made either; for example, an Iron Sky rip at 22 Mbps (24 fps) - that's at least twice the bitrate most people use for 24 fps 16:9 1080p.
My understanding is that the aTV will play bitrates higher than it's spec just fine. However, the people that have success doing this are using ethernet as wifi will not reliably carry that amount of data. I have tried using uncompressed BR files over wifi and I do not get smooth playback.
Are you sure? I've tested the ATV3 with high-bitrate videos like the 40 Mbps (!!) one at http://www.auby.no/files/video_tests/h264_1080p_hp_4.1_40mbps_birds.mkv (after remuxing it with Subler). Absolutely no problems during playback. BTW, not even the A4 CPU (one-generation less than the one in the ATV3) in the iPad 1 / iPhone 4 stutters while playing back the same video.
It's only the iPhone 3GS that does have problems with this video - but even it's watchable to some degree. (Even earlier (1st and 2nd gen) small-screened iOS devices can't play back the footage at all.)
I haven't encountered stutters or dropped frames with regular, uncompressed BD rips I've made either; for example, an Iron Sky rip at 22 Mbps (24 fps) - that's at least twice the bitrate most people use for 24 fps 16:9 1080p.
Update: I downloaded that birds file and see that there is some slow pan to the left with a slow reverse zoom showing more and more birds in the frame. If that clip is 40Mbps, I have no idea why it's able to play on TV3. I would expect it to drop frames or stutter. Maybe when you convert it for TV3, your method is compressing it a bit more and/or reducing the bit rate to a lower level? I tried it with Subler and it yielded a 40Mbps file. I'll test it on my TV3 a little later.
Update to post #13: I tried the birds video converted to .m4v with Subler (still showing about 40Mbps). What I noticed is that when I tried to play it on TV3 (wired ethernet), it had a prolonged delay and wouldn't start even when about half of the progress bar was full (showing about half of the file streamed over).
My suspicions: TV3 recognized that it could not play it and was internally downconverting it to something it could play (probably re-doing it at around 25Mbps or less). It was probably using most of it's horsepower to do the conversion leading to the slow transfer of the stream.
Update: I downloaded that birds file and see that there is some slow pan to the left with a slow reverse zoom showing more and more birds in the frame. If that clip is 40Mbps, I have no idea why it's able to play on TV3. I would expect it to drop frames or stutter. Maybe when you convert it for TV3, your method is compressing it a bit more and/or reducing the bit rate to a lower level? Maybe the lack of audio frees up some extra horses?
Unfortunately, that clip is a re-encode. BBC's Planet Earth utilizes the VC-1 codec which is not playable on the TV.
My understanding is that the aTV will play bitrates higher than it's spec just fine. However, the people that have success doing this are using ethernet as wifi will not reliably carry that amount of data. I have tried using uncompressed BR files over wifi and I do not get smooth playback.
Is there any fundamental difference between the BD H.264 and that of HB (if HB was used for reencoding)?
No on-the-fly transcoding is occurring, the TV can play high bitrate content. Like I said earlier, the problem lies with the system being slow at buffering the movie, basically the system is slow at writing to it's internal memory.
If "3" can handle 40Mbps, just about all BDs could be simply repackaged by Subler (no Handbrake required). So again, are you sure about what you wrote up there or by "high bitrate" did you mean around 25Mbps and less... not 40Mbps? An awful lot of people are using Handbrake for BD conversions.
How sure are you of this? I've seen an awful lot of people griping about Mbps much above 25. Technically one could call that "high bitrate" but we're talking about 40Mbps, which, as I understand it, is beyond what TV can do. See for example, post #2 here: https://forums.macrumors.com/threads/1351739/ or read this: http://appleinsider.com/articles/12...n_1080p_apple_tv_and_software_update_5/page/7
My system is wired and I never have problems with speed of the stream. In this test, I tried the birds video and it behaved differently than other videos. To rule out a coincidental system issue, I immediately tried one of my other movies and it shot over as usual (without the odd happenings I described).
If "3" can handle 40Mbps, just about all BDs could be simply repackaged by Subler (no Handbrake required). So again, are you sure about what you wrote up there or by "high bitrate" did you mean around 25Mbps and less... not 40Mbps? An awful lot of people are using Handbrake for BD conversions.
BTW, the Norwegian test page states the Birds video is "Direct bluray (or hddvd) remux" - that is, it might not have been reencoded.
MediaInfo clearly shows the codec being x264.
I've both made it much longer (by joining the same file to itself several times) and added two audio tracks (AC3 + AAC) to it. I've started uploading it to https://dl.dropbox.com/u/81986513/0...4.1_40mbps_birds copy 7.mp4.joined.2audio.m4v (it'll take a while for it to be transferred - at least 5-6 hours from now (see the timestamp of this post). That is, the link, for the moment, is still useless.)
My guess about the lack of sound seems irrelevant with Jlassoon's response to me in post #20. He says he's not even using Handbrake- just subler- which means he's simply putting an TV3 wrapper around the original BD rip. I assume he wouldn't do that without sound. Since some of those rips are huge (and very likely above 25Mbps) and since he says they play flawlessly, apparently the collective and well-published concept of TV3 spec cap at 25Mbps is wrong.
And, if it can handle any Mbps rate BD can handle, then the only significant specs advantage BD has over TV3 will be the sound licenses (better than Dolby Digital).
And, if it can handle any Mbps rate BD can handle, then the only significant specs advantage BD has over TV3 will be the sound licenses (better than Dolby Digital).