[mythtv-users] HDMI-Componet Converter/Decoder
Gordon McCrae
gordon.mccrae at gmail.com
Sat Feb 28 17:32:37 UTC 2015
On 28/02/15 17:19, Dave Pearson (Lists) wrote:
> RE: [mythtv-users] HDMI-Componet Converter/Decoder
>
> -----Original message-----
> *From:* Gordon McCrae <gordon.mccrae at gmail.com>
> *Sent:* Sat 28-02-2015 17:04
> *Subject:* Re: [mythtv-users] HDMI-Componet Converter/Decoder
> *To:* mythtv-users at mythtv.org;
> On 28/02/15 16:20, Dave Pearson (Lists) wrote:
>>
>> -----Original message-----
>> *From:* Henk D. Schoneveld <belcampo at zonnet.nl>
>> <mailto:belcampo at zonnet.nl>
>> *Sent:* Sat 28-02-2015 16:12
>> *Subject:* Re: [mythtv-users] HDMI-Componet Converter/Decoder
>> *To:* Discussion about MythTV <mythtv-users at mythtv.org>
>> <mailto:mythtv-users at mythtv.org>;
>>
>> On 28 Feb 2015, at 10:32, Dave Pearson (Lists)
>> <lists at the-pearsons.co.uk <mailto:lists at the-pearsons.co.uk>>
>> wrote:
>>
>>> I've just installed an HD-PVR in my mythtv system. It's
>>> connected to a Virgin V-Plus box via S-Video and I'm only
>>> able to record in 4:3 Aspect Ratio, even though the source
>>> material is 16:9.
>> The aspect ratio is ‘just’ a replaceable value in your
>> recording, which shouldn’t be too difficult to replace in
>> your recorded file.
>>>
>>> Because of this, I think I have to bite the bullet and get
>>> an HDMI-Component Converter box. Has anyone any experience
>>> of using one of these:
>>>
>>> Liqoo HDMI to Ypbpr Component AV to VGA SPDIF Converter
>>> Adapter R / L 1080P
>>>
>>> The HDFury2 seems to be very expensive in comparison.
>>>
>>> I'd also welcome recommendations for any other devices that
>>> people are using and having success with.
>>>
>>> Regards,
>>> Dave
>>> _______________________________________________
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>>
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>>
>> Hi Henk,
>>
>> I've been trying to find a way of replacing that value in the
>> recordings, but haven't been able to find one yet, any
>> suggestions would be welcome.
>>
>> I am able to watch the recordings in mythfrontend by setting the
>> Aspect Ratio override, but that's no good when I'm away from home
>> and watching via Plex, so fixing up the recordings would be good.
>>
>> Reagrds,
>>
>> Dave.
>>
> ffmpeg -i InputFile -vcodec copy -acodec copy -aspect 16:9 OutputFile
>
> _______________________________________________
>
> Hi Gordon,
>
> I've tried that and, unfortunately it doesn't work, here is the
> mediainfo report on an HD-PVR recorded file:
>
> General
> ID : 0 (0x0)
> Complete name : 2148_20150227210000.mpg
> Format : MPEG-TS
> File size : 893 MiB
> Duration : 1h 0mn
> Overall bit rate mode : Variable
> Overall bit rate : 2 069 Kbps
>
> Video
> ID : 4113 (0x1011)
> Menu ID : 1 (0x1)
> Format : AVC
> Format/Info : Advanced Video Codec
> Format profile : Main at L3.1
> Format settings, CABAC : Yes
> Format settings, ReFrames : 4 frames
> Format settings, GOP : M=4, N=32
> Codec ID : 27
> Duration : 1h 0mn
> Bit rate mode : Variable
> Bit rate : 1 579 Kbps
> Maximum bit rate : 20.0 Mbps
> Width : 720 pixels
> Height : 576 pixels
> Display aspect ratio : 4:3
> Frame rate : 25.000 fps
> Standard : PAL
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Interlaced
> Scan order : Top Field First
> Bits/(Pixel*Frame) : 0.152
> Stream size : 682 MiB (76%)
> Color primaries : BT.601 PAL
> Transfer characteristics : BT.470 System B, BT.470
> System G
> Matrix coefficients : BT.601
>
> Audio
> ID : 4352 (0x1100)
> Menu ID : 1 (0x1)
> Format : AC-3
> Format/Info : Audio Coding 3
> Mode extension : CM (complete main)
> Format settings, Endianness : Big
> Codec ID : 129
> Duration : 1h 0mn
> Bit rate mode : Constant
> Bit rate : 384 Kbps
> Channel(s) : 2 channels
> Channel positions : Front: L R
> Sampling rate : 48.0 KHz
> Bit depth : 16 bits
> Compression mode : Lossy
> Delay relative to video : -72ms
> Stream size : 166 MiB (19%)
>
> Regards,
>
> Dave.
>
>
>
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And what does it (the mediainfo output) look like after you run it
through ffmpeg? Don't use mediainfo myself so can't really comment,
I notice you're dealing with MPEG-TS, I always transcode away from this,
don't know if that might be part of the issue.
What if you transcode the original file to MP4 for example? I always
transcode my recorded TV, if nothing else because it'll be smaller.
The other option is having your video player redo the aspect ratio on
playback, I actually have loads of old videos in 4:3, but MythFrontend
is configured to always show in 16:9, ignoring the file's value, also
mplayer is set to do the same by using "-aspect 16:9". Is Plex not able
to do this?
Cheers
Gordon
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