My Humax Forum » Freeview HD » Aura UHD

SD .ts files playback without transcoding

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    larkim

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    Just remembered how easy it used to be to extract .ts files from my old Thomson DHD4000 and then simply rename to .mpeg and it becomes playable via VLC on a PC with no transcoding needed.

    Tried the same today using the FTP option to download a couple of films from Film4 as .ts files that hadn't been transcoded and guess what? They play fine with VLC on a PC when renamed to .mpeg

    I also used to take advantage of the "no transcoding needed" to turn such SD broadcasts quickly into DVDs for personal use (e.g. I had all of the "Something Special" episodes recorded for my SEN son).

    Just something to bear in mind if you want to easily extract non-HD broadcasts for archival. Probably not news to anyone really, but just in case it is...

    | Thu 28 Jan 2021 11:03:21 #1 |
  2. grahamlthompson

    grahamlthompson

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    How and what software did you use to access the box FTP aerver ?

    | Thu 28 Jan 2021 12:04:34 #2 |
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    larkim

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    Filezilla (on laptop) using the FTP server that was added in the latest release.

    Tried a few different SD channels with the same level of success, so I presume SD remains broadcast in Mpeg2. Not even tried with HD as I'd presume encryption would make that a non-starter.

    | Thu 28 Jan 2021 12:41:18 #3 |
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    larkim

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    Would work at command line too of course.

    | Thu 28 Jan 2021 12:42:17 #4 |
  5. grahamlthompson

    grahamlthompson

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    larkim - 15 mins ago  » 
    Filezilla (on laptop) using the FTP server that was added in the latest release.
    Tried a few different SD channels with the same level of success, so I presume SD remains broadcast in Mpeg2. Not even tried with HD as I'd presume encryption would make that a non-starter.

    The files that I have downloaded are encoded with H264/AVC and AAC audio.

    I have tried every combination in Filezilla. Can you please post an eaxmple omitting your local IP address

    I presume the password is 0000. Is the name Humaxftp ?

    | Thu 28 Jan 2021 12:59:03 #5 |
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    larkim

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    Are you downloading from SD channels only? Accessed via aura:0000 on port 2323, downloading from the file tree which is /Recordings/ByChannels/014_Film4 for example.

    | Thu 28 Jan 2021 13:02:36 #6 |
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    larkim

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    IP address is the "normal" one - 192.168.1.1xx in my case

    | Thu 28 Jan 2021 13:03:20 #7 |
  8. grahamlthompson

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    larkim - 9 mins ago  » 
    IP address is the "normal" one - 192.168.1.1xx in my case

    That has always worked. The FTP server was added in the latest update. It's the box web interface html server.

    No need to change anything. VLC will play the transport stream container as is.

    Also plays from a usb stick with a otg adaptor on saMsung phone and tablet.

    Full container details downloaded from BBC1-HD recording.

    General
    ID : 0 (0x0)
    Complete name : D:\Downloads\Antiques Road Trip (2).ts
    Format : MPEG-TS
    File size : 753 MiB
    Duration : 44 min 41 s
    Overall bit rate mode : Variable
    Overall bit rate : 2 356 kb/s

    Video
    ID : 100 (0x64)
    Menu ID : 1 (0x1)
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4
    Format settings, CABAC : Yes
    Format settings, RefFrames : 2 frames
    Frame mode : Frame doubling
    Format settings, GOP : M=1, N=30
    Codec ID : 27
    Duration : 44 min 39 s
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 16:9
    Frame rate : 25.000 FPS
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive

    Audio
    ID : 200 (0xC8)
    Menu ID : 1 (0x1)
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format version : Version 2
    Format profile : LC
    Muxing mode : ADTS
    Codec ID : 15
    Duration : 44 min 38 s
    Bit rate mode : Variable
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 kHz
    Frame rate : 46.875 FPS (1024 SPF)
    Compression mode : Lossy

    | Thu 28 Jan 2021 13:21:23 #8 |
  9. grahamlthompson

    grahamlthompson

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    larkim - 20 mins ago  » 
    Are you downloading from SD channels only? Accessed via aura:0000 on port 2323, downloading from the file tree which is /Recordings/ByChannels/014_Film4 for example.

    HD - 1080p/1080i is rescaled to 720 x 576 using the much more efficient H24/AVC codec.

    The box has to transcode Live HD TV on the fly so that you can watch the HD channels in the Aura app.

    | Thu 28 Jan 2021 13:24:30 #9 |
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    larkim

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    Aha, I see what you're getting at. I may have ignored what actual codec was in use, so where I've said mpeg2 it might well be H264 with AAC. The last time I did anything from a transport stream was about 10-12 years ago so if the broadcast standard has shifted from mpeg2 for SD channels too then that's my error. I've deleted the files already so will redownload and confirm what type of file I'm seeing. I suspect you're right that the file extension is irrelevant, that used to be a step that was probably necessary for an older clunky piece of software that i was using to force it to recognise what was inside the container.

    | Thu 28 Jan 2021 13:34:48 #10 |

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