[ATV2] Deinterlacing 1080i streams

Speshuled · 2011-02-21 18:53

Hmm, perhaps they're not x264 mkv files like I thought they were. Now that I'm on my computer and looking at the file I see its not...

This was the file I was trying to play:
Conan 2011-01-31...1080i HDTV DD5.1 MPEG2-TrollHD.ts

All of the other files that couldn't play were also .ts files. I did a little more investigating a few minutes ago. ATV2 doesn't play nice with .wmv files either.

How would I go about checking the onscreen/codecinformation?

Razor_109 · 2011-02-21 23:11

Ah ok, its MPEG2 so there is no Hardware acceleration for that. Try my stream which i uploaded, should be MPEG4 (H264) which should be hw-accelerated i guess.

http://rapidshare.com/files/447068171/10...stream.mkv

For onscreen/codecinfo on linux it's the "o" button, i wouldn't know how to enable this in the iOS build Confused

Razor_109 · 2011-05-12 15:07

Anyone can tell me the current state of the ATV2 branch? Is it deinterlaceing by GPU already? Or wont this ever be possible to play 1080i MPE4/H264 files?

Maybe a dev could shed a light on this deinterlacing matter and what to expect of the ATV and other iOS devices.

Thanks!

**davilla** · 2011-05-12 18:33

Razor_109 Wrote:@toitle
Can any of the iOS developers maybe shed a light on this, and the possible expectations for the furture? will this improve or will 1080i never be possible on the ATV2? When it would it would someday make a hell of a client for PVR!

We are at the mercy of Apple when it comes to HD mpeg2. So as much as I shake the crystal ball, damm thing won't fess up.

Razor_109 · 2011-05-14 18:49

davilla Wrote:We are at the mercy of Apple when it comes to HD mpeg2. So as much as I shake the crystal ball, damm thing won't fess up.

Understood, but what about 1080i MPEG4? That's being accelerated i guess? The big question is what about hardware deinterlacing? Anything in the magic ball about that? Wink

ATV would be the perfect little DVB-Client for my home if it only could handle 1080i streams! (MPEG-4)

**davilla** · 2011-05-15 02:35

Razor_109 Wrote:Understood, but what about 1080i MPEG4? That's being accelerated i guess? The big question is what about hardware deinterlacing? Anything in the magic ball about that?

ATV would be the perfect little DVB-Client for my home if it only could handle 1080i streams! (MPEG-4)

Which mpeg4 ? part 2 or part 10 ?

Razor_109 · 2011-05-15 11:39

davilla Wrote:Which mpeg4 ? part 2 or part 10 ?

I guess Part-10 MPEG-4 based on this Media-info output:

Code:

Video

ID                               : 1

Format                           : AVC

Format/Info                      : Advanced Video Codec

Format settings, CABAC           : No

Muxing mode                      : Container profile=Unknown@10.3

Codec ID                         : V_MPEG4/ISO/AVC

Duration                         : 49mn 57s

Bit rate                         : 10.3 Mbps

Width                            : 1 920 pixels

Original width                   : 16 pixels

Height                           : 1 088 pixels

Original height                  : 32 pixels

Display aspect ratio             : 16:9

Original display aspect ratio    : 0.500

Frame rate                       : 25.000 fps

Color space                      : YUV

Chroma subsampling               : 4:2:0

Bit depth                        : 8 bits

Scan type                        : Progressive

Bits/(Pixel*Frame)               : 0.198

Stream size                      : 3.60 GiB (92%)

Language                         : English

Scan type shows progressive but its an interlaced file! Any other way to find out, our would you accept a muxdump to test it your self?

Razor_109 · 2011-10-07 15:59

Sorry for giving this a bump. Has there been any progress on this part? Anyone tried using the IOS-PVR version of XBMC on their ATV2 and is willing to provide some results?
I’m living in the Netherlands, we have both SD and HD channels here
- SD MPEG2 Channels, 576i.
- HD MPEG 4 Part-10 Channels, 1080i
Can any of the developers maybe shed a light on how the ATV2 will handle these file-types? I guess the MPEG2 SD channel can be handled by Software rendering? And is there HW-acceleration + deinterlacing for the MPEG4 because this should be the main issue I guess.
I’m really interested in this information, would be sad to go buy a ATV2 and find out it wont play any live channels. So any experience of ATV2 + PVR would be great, let me know!

Btw. In my case, i'm interested in 1080i MPEG4 files!

**Memphiz** · 2011-10-07 16:42

You won't have luck with 1080i material because the GPU has no deinterlacing feature and so the stream will be decoded in software via CPU which won't have enough power...

Razor_109 · 2011-10-07 17:43

Memphiz Wrote:You won't have luck with 1080i material because the GPU has no deinterlacing feature and so the stream will be decoded in software via CPU which won't have enough power...

Ok, so the GPU wont decode the stream and just not deinterlace? So it will display the stream correctly but with interlacing.