Hacking [info] about switch 30sec video files

[DarkenSX]

not sure if the info is usable for the likes of exploits since the last type that had it was MPEG2 i believe. heck maybe we could just get the switch to play movies somehow via gallery with this info *Fingers Crossed*

Spoiler: file info

General
Complete name : ~/Desktop/2018031523040200-F1C11A22FAEE3B82F21B330E1B786A39.mp4 <--- "Zelda:BoTW file"
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/mp42)
File size : 18.8 MiB
Duration : 29 s 902 ms
Overall bit rate : 5 261 kb/s
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Muxing mode : Container [email protected]
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 29 s 902 ms
Bit rate : 4 924 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 FPS
Minimum frame rate : 27.786 FPS
Maximum frame rate : 33.309 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.178
Stream size : 17.6 MiB (94%)
Title : VideoHandle
Language : English
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30
Color range : Limited
Color primaries : BT.709
Transfer characteristics : sYCC
Matrix coefficients : BT.709
mdhd_Duration : 29902

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 29 s 867 ms
Source duration : 29 s 890 ms
Source_Duration_FirstFrame : 23 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Nominal bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 spf)
Compression mode : Lossy
Stream size : 466 KiB (2%)
Source stream size : 467 KiB (2%)
Title : SoundHandle
Language : English
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30
mdhd_Duration : 29867

i'll upload only if requested. but i doubt its needed.

 

[Genwald]

It's interesting to see some info about how the switch encodes video, but I'm fairly certain this info won't help to get other files to play on the switch.

 

[Noctosphere]

What I'd like is a Plex App for switch

 

[OkazakiTheOtaku]

I'm pretty sure the Switch puts special metadata on the videos to prevent others from working.

 

[games906]

It probably works the same way the DSi worked (any picture other than the photos captured by the system itself would not show).

 

[DarkenSX]

It probably works the same way the DSi worked (any picture other than the photos captured by the system itself would not show).

it does show up by naming an mp4 the same file name but it shows up as ? and says it can't be played. So im thinking Encoding might be the cause.

--------------------- MERGED ---------------------------

I'm pretty sure the Switch puts special metadata on the videos to prevent others from working.

its just means that we would have to figure out how to extract the metadata or replicate it on other mp4 files

 

[Deleted User]

If i'm not mistaken, Nintendo's taken a hard stance this time. I'm pretty sure they encrypt snapshots and videos, maybe even on a per-console basis. I can't find the source where i heard that, though.

 

[HexZyle]

If i'm not mistaken, Nintendo's taken a hard stance this time. I'm pretty sure they encrypt snapshots and videos, maybe even on a per-console basis. I can't find the source where i heard that, though.

You can view the files on a PC using conventional software. There is no special encryption. That's what proprietary file formats are for.

 

[The Real Jdbye]

If i'm not mistaken, Nintendo's taken a hard stance this time. I'm pretty sure they encrypt snapshots and videos, maybe even on a per-console basis. I can't find the source where i heard that, though.

Someone already figured out how to get custom "screenshots" to load and it wasn't particularly hard, so videos might be just as easy.

 

[Deleted User]

Someone already figured out how to get custom "screenshots" to load and it wasn't particularly hard, so videos might be just as easy.

I've looked into it more. Basically, it checks the timestamp and hash of the image against a database stored in NAND. So, in order to load custom screenshots, we'd need NAND R/W. Certainly possible, but not simple at all.

 

[_______]

I've looked into it more. Basically, it checks the timestamp and hash of the image against a database stored in NAND. So, in order to load custom screenshots, we'd need NAND R/W. Certainly possible, but not simple at all.

Certainly, they don't want another soundhex I guess?

 

[DarkenSX]

https://drive.google.com/open?id=1lpdWErg1skUihgLdQdbgz_JxLSrZ_N6Q <-- the video file for dissecting or whatever.

 

[kobayashi90]

not sure if the info is usable for the likes of exploits since the last type that had it was MPEG2 i believe. heck maybe we could just get the switch to play movies somehow via gallery with this info *Fingers Crossed*

Spoiler: file info

General
Complete name : ~/Desktop/2018031523040200-F1C11A22FAEE3B82F21B330E1B786A39.mp4 <--- "Zelda:BoTW file"
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/mp42)
File size : 18.8 MiB
Duration : 29 s 902 ms
Overall bit rate : 5 261 kb/s
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Muxing mode : Container [email protected]
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 29 s 902 ms
Bit rate : 4 924 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 FPS
Minimum frame rate : 27.786 FPS
Maximum frame rate : 33.309 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.178
Stream size : 17.6 MiB (94%)
Title : VideoHandle
Language : English
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30
Color range : Limited
Color primaries : BT.709
Transfer characteristics : sYCC
Matrix coefficients : BT.709
mdhd_Duration : 29902

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 29 s 867 ms
Source duration : 29 s 890 ms
Source_Duration_FirstFrame : 23 ms
Bit rate mode : Constant
Bit rate : 128 kb/s
Nominal bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 spf)
Compression mode : Lossy
Stream size : 466 KiB (2%)
Source stream size : 467 KiB (2%)
Title : SoundHandle
Language : English
Encoded date : UTC 1970-01-01 05:10:30
Tagged date : UTC 1970-01-01 05:10:30
mdhd_Duration : 29867

i'll upload only if requested. but i doubt its needed.

Quality looks good, wow.
Okay its not perfect well 5MB Videosource isnt that good, if its gonna hacked the quality must be at least 12MB.

 

[DarkenSX]

Quality looks good, wow.
Okay its not perfect well 5MB Videosource isnt that good, if its gonna hacked the quality must be at least 12MB.

5MB though is probably because switch only will record 30 secs of video per video it maybe possible to get it to play longer or larger videos but that requires getting it to play videos not from the switch in the first place but my issue at the moment is finding a video recoder that does AVC "advanced video codec" on mp4 and the acc audio as well plus the other weird setting 8bit setting especially.

 

[kobayashi90]

5MB though is probably because switch only will record 30 secs of video per video it maybe possible to get it to play longer or larger videos but that requires getting it to play videos not from the switch in the first place but my issue at the moment is finding a video recoder that does AVC "advanced video codec" on mp4 and the acc audio as well plus the other weird setting 8bit setting especially.

Yeah you're probaly right with that. But still, wouldnt be hard to code a fork of ffmpeg for switch with hardware encoding while playing.
Or anything similary..

 

[Genwald]

but my issue at the moment is finding a video recoder that does AVC "advanced video codec" on mp4 and the acc audio as well plus the other weird setting 8bit setting especially.

Dude, AVC aka H.264 is the most common video encoding that I see, acc is pretty damn common too and why do you think 8 bit is a weird setting for color depth?! I have hundreds of videos on my pc with these exact settings. Matching these encoding settings will not let you play other videos on the switch, matching the hash of this video might but trying to get a hash collision even for one video isn't very reasonable.

 

[SuinkaiVS]

Someone already figured out how to get custom "screenshots" to load and it wasn't particularly hard, so videos might be just as easy.

is there a tutorial or private use only?

 

[The Real Jdbye]

is there a tutorial or private use only?

There's no public easy-to-use method. It needs a key that has to be dumped from a system title AFAIK, which is something we can do ourselves given that we have the keys to decrypt them (which I guess we do now thanks to BigBlueBox)
But the info went into enough detail that it shouldn't be too hard to figure out for someone with a little experience.
I'm pretty sure it was a thread or a post on here, but I don't think I'd be able to find it again easily. I came across it by chance and didn't save the link and I don't even remember any key words I could search for to find it again.
It's probably not very useful information, at least it's not useful to any of us, so I didn't think to save the link.