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22 posts

Geek


Topic # 99707 26-Mar-2012 07:21
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Hi

I have been trying to play back a Movie I bookmarked and record from my DishTV AerialBox T1020 on my media center PC

im using VLC player and I have found a play back issue when the Movie is split into two seperate files (due to the 32bit fat restriction) it claims both files are corrupt and arent being picked up as video files at all..

from what i know about video containers, it seems to me that the container file isn't writing / saving the video/audio information correctly for either files, and its not correctly closing the file with the correct container information once its reached the 4 gig limit.. so when I try to play it back on my PC using VLC player both files dont have the correct video information..

I am recording TV1 / TV2 / TV3 both in HD, thus the file size is larger than recording SD Prime or TVNZ7

heres a video info dump I did with a program called MediaInfo of file1 and file 2

000200.mpg

General #0
Count                : 185
Count of stream of t : 1
Kind of stream       : General
StreamKindID         : 0
Inform               : MPEG-1TS: 4.00 GiB
Count of video strea : 0
Count of audio strea : 0
Count of text stream : 0
Count of chapter str : 0
Complete name        : D:\TV3\SS_SYS\Video\000200.mpg
Folder name          : D:\TV3\SS_SYS\Video
File name            : 000200
File extension       : mpg
Format               : MPEG-1TS
Format               : MPEG-1 Transport
Format/Family        : MPEG-1
Format/Extensions    : ts
Codec                : MPEG-1TS
Codec                : MPEG-1 Transport
Codec/Family         : MPEG-1
Codec/Extensions     : ts
File size            : 4294959104
File size            : 4.00 GiB
File size            : 4 GiB
File size            : 4.0 GiB
File size            : 4.00 GiB
File size            : 4.000 GiB

000201.mpg

General #0
Count                : 185
Count of stream of t : 1
Kind of stream       : General
StreamKindID         : 0
Inform               : 3.14 GiB
Count of video strea : 0
Count of audio strea : 0
Count of text stream : 0
Count of chapter str : 0
Complete name        : D:\TV3\SS_SYS\Video\0002001.mpg
Folder name          : D:\TV3\SS_SYS\Video
File name            : 0002001
File extension       : mpg
File size            : 3368550400
File size            : 3.14 GiB
File size            : 3 GiB
File size            : 3.1 GiB
File size            : 3.14 GiB
File size            : 3.137 GiB

now if I do a shorter TV Program which doesn't split the file into two I get this, information again from MediaInfo

General #0
Count                : 185
Count of stream of t : 1
Kind of stream       : General
StreamKindID         : 0
Inform               : MPEG-4TS: 525 MiB, 29mn 56s
ID                   : 21
Count of video strea : 1
Count of audio strea : 1
Count of text stream : 0
Count of chapter str : 0
Codecs Video         : AVC
Audio codecs         : AAC
Complete name        : D:\TV3\000100.mpg
Folder name          : D:\TV3
File name            : 000100
File extension       : mpg
Format               : MPEG-4TS
Format               : MPEG-4 Transport
Format/Family        : MPEG-4
Format/Extensions    : m4t m4s ts tp trp
Codec                : MPEG-4TS
Codec                : MPEG-4 Transport
Codec/Family         : MPEG-4
Codec/Extensions     : m4t m4s ts tp trp
File size            : 550199296
File size            : 525 MiB
File size            : 525 MiB
File size            : 525 MiB
File size            : 525 MiB
File size            : 524.7 MiB
PlayTime             : 1796920
PlayTime             : 29mn 56s
PlayTime             : 29mn 56s 920ms
PlayTime             : 29mn 56s
PlayTime             : 00:29:56.920
Bit rate             : 2449521
Bit rate             : 2450 Kbps

as you can see that one writes the container correctly..

Kind regards,
Gordon.


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Uber Geek
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  Reply # 600433 26-Mar-2012 18:52
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My understanding was that to get Freeview certification Dish had to encrypt the recordings made onto the external drive, precisely to prevent them being playable/extractable on a PC - if they didn't they couldn't get certified or use the EPG etc?

If so, not surprised you can't play them in VLC.

33 posts

Geek


  Reply # 600517 26-Mar-2012 22:32
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Hi Jimmy,

aha, interesting. I didn't realise that all content (even SD) had to be encrypted. I thought only certain content would be encrypted.

It does explain why the newer versions of the firmware seem to become less and less VLC-friendly - could be intentionally done so.

My observation is that with newer versions, PAT/PMT is omitted from the container, leaving the file unreadable using VLC. I suppose the PAT/PMT is somehow stored in the .inf file so that the T1020 can play the content. I wonder what the structure of the .inf file is anyways - any ideas?

Am also trying to figure out the db type for the rdb/ content.

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  Reply # 600918 27-Mar-2012 19:09
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Don't know whether SD content has to be encrypted as well - never looked that closely at it. The PAT/PMT structure issue is, sadly, beyond my mediocre level of technical competence. It does annoy me that Freeview are purposely suckering mom and dad consumers into buying boxes that are so (deliberately) crippled.

I gave up on the FV boxes in the end, as they were just too crippled and (based on the reviews I was reading) buggy, and picked up a Tivo for $199. However, it rarely gets powered up because of the dearth of content that's actually worth recording/watching. For that reason, I haven't purchased the home networking package.

Longer term plan, probably my Christmas project, is a cheap(ish) HTPC build with a 1-2 satellite tuners (for FV, SBS and EPG collection), 1-2 terrestrial tuners for FV etc, and a Hauppauge HDPVR coupled with an HDFury (both already purchased but not yet test-fired) for video capture from Sky etc. Aggregate all content onto some large drives, and stream to where I want it in the house. Nice, flexible, and not crippled like the 1020 boxes etc.





22 posts

Geek


  Reply # 602878 31-Mar-2012 13:18
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JimmyH: Don't know whether SD content has to be encrypted as well - never looked that closely at it. The PAT/PMT structure issue is, sadly, beyond my mediocre level of technical competence. It does annoy me that Freeview are purposely suckering mom and dad consumers into buying boxes that are so (deliberately) crippled.

I gave up on the FV boxes in the end, as they were just too crippled and (based on the reviews I was reading) buggy, and picked up a Tivo for $199. However, it rarely gets powered up because of the dearth of content that's actually worth recording/watching. For that reason, I haven't purchased the home networking package.

Longer term plan, probably my Christmas project, is a cheap(ish) HTPC build with a 1-2 satellite tuners (for FV, SBS and EPG collection), 1-2 terrestrial tuners for FV etc, and a Hauppauge HDPVR coupled with an HDFury (both already purchased but not yet test-fired) for video capture from Sky etc. Aggregate all content onto some large drives, and stream to where I want it in the house. Nice, flexible, and not crippled like the 1020 boxes etc.




Hi tried TS Doctor on both the single files for one video stream, then concatenating both files to make one, TS Doctor didn't recognize the files and bombed out before any repair work could be done..

also TS Doctor has stated that the file(s) are copy protected, I know the audio is copy protected because it records AAC audio, which is copy protected audio format.. VLC plays AAC audio back ok on working video clips, but no other media program will play back the audio...

so no go on TS Doctor

also have noticed the latest firmware (v1.28 Released 1 March 2012) has been ditched on dishtv's website! i guess maybe my email got through that it wasn't working properly?

hopefully there will be a fix when / if they fix the problem..

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