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AppleTV can't handle mp4 movie

N

nicoska

macrumors member
Original poster
Jun 16, 2007
40
0
Hi all, i have a mp4 movie with AAC, Mono, 44,100 kHz H.264, 1280 x 544, at 3745.92 kbit/s and about 3.73 GB size.
Why it won't sync with my AppleTV (2.0.2) or stream it?
Thanks

Nico
 
The max bitrate Apple TV can decode is near abouts 5,000kbps. So your bitrate isn't the issue. Nor is the audio setting.

Give us more information about your setup.
 
Kilamite said:
The max bitrate Apple TV can decode is near abouts 5,000kbps. So your bitrate isn't the issue. Nor is the audio setting.

Give us more information about your setup.
Click to expand...

It is a bit rate issue. The maximum bit rate for mp4 is 3 Mbps. 5 Mbps is for h.264.
 
Oilbrnr said:
Can you play it in iTunes? What did you use to encode it?
Click to expand...

Yes, i can play in iTunes.
I use to open an mkv file in QuickTime, export to mp4 with video passtrough and audio conversion to AAC.

Thanks

Nico
 
nicoska said:
1280 x 544
Click to expand...
Depending on your framerate this is your problem.
From http://www.apple.com/appletv/specs.html

"H.264 and protected H.264 (from iTunes Store): Up to 5 Mbps, Progressive Main Profile (CAVLC) with AAC-LC audio up to 160 Kbps (maximum resolution: 1280 by 720 pixels at 24 fps, 960 by 540 pixels at 30 fps) in .m4v, .mp4, and .mov file formats"

So, if you are at ntsc 24 fps then thats not your problem. But if you ntsc video at 29.97 fps (like say a ripped dvd of a television show or whatever) then the atv will not take it as the max size it will accept at that frame rate is 960 x 540.
 
dynaflash said:
Depending on your framerate this is your problem.
From http://www.apple.com/appletv/specs.html

"H.264 and protected H.264 (from iTunes Store): Up to 5 Mbps, Progressive Main Profile (CAVLC) with AAC-LC audio up to 160 Kbps (maximum resolution: 1280 by 720 pixels at 24 fps, 960 by 540 pixels at 30 fps) in .m4v, .mp4, and .mov file formats"

So, if you are at ntsc 24 fps then thats not your problem. But if you ntsc video at 29.97 fps (like say a ripped dvd of a television show or whatever) then the atv will not take it as the max size it will accept at that frame rate is 960 x 540.
Click to expand...

It's 23,98 FPS
So, how can i check if is high profile or not ?
Thanks

Nico
 
Well, what did you use to encode it ? The encoder should have shown you the options is uses. Otherwise you'd have to use mp4 dump or some other tool to show you what h.264 options it uses. Not all are ATV compatible.
 
Your best using the likes of VisualHub. Costs a small bit, but well worth it.
 
nicoska said:
I use to open an mkv file in QuickTime, export to mp4 with video passtrough and audio conversion to AAC.
Click to expand...

nicoska said:
So, how can i check if is high profile or not?
Click to expand...

Most MKV's if not all are encoded with H.264 Codec and you passed the video through in QT Pro so it must of been H.264 or you wouldn't of been able to passthrough.

I think the reason it won't play correctly is because you passed through instad of doing a complete conversion. Copy the video (So you have 2 of it) and then do a full conversion not passthrough and see if it works then.
 
northy124 said:
Most MKV's if not all are encoded with H.264 Codec and you passed the video through in QT Pro so it must of been H.264 or you wouldn't of been able to passthrough.

I think the reason it won't play correctly is because you passed through instad of doing a complete conversion. Copy the video (So you have 2 of it) and then do a full conversion not passthrough and see if it works then.
Click to expand...

I'm pretty sure that if i'll do a complete conversion (no matter if QickTime oer VisualHub) it will work. But i'm on a Core Duo 2,16 Ghz iMac so...it will take me a long time.
thanks

nico
 
nicoska said:
I'm pretty sure that if i'll do a complete conversion (no matter if QickTime oer VisualHub) it will work. But i'm on a Core Duo 2,16 Ghz iMac so...it will take me a long time.
Click to expand...

Leave it over night then or leave the iMac alone whilst it is converting.
 
northy124 said:
Most MKV's if not all are encoded with H.264 Codec and you passed the video through in QT Pro so it must of been H.264 or you wouldn't of been able to passthrough.

I think the reason it won't play correctly is because you passed through instad of doing a complete conversion. Copy the video (So you have 2 of it) and then do a full conversion not passthrough and see if it works then.
Click to expand...
Almost every MKV I have ever looked at was encoded with an h.264 profile that is incompatible with the AppleTV. I guess the "scene" likes their high profile. :D
 
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