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Old 23-01-2018, 23:09   #1
trueblood
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Mpeg4

Earlier tonight I was fast searching 5HD and it seemed faster than before, so i checked the system info diagnostics and it appears that they have
switched to H.264(Mpeg4) Video. I checked some other channels and BBC 2hd, Universal hd, itvBe hd, Film 4hd and BT Sport 3 have switched also. While this is a good thing I have found the 2x search or 30 sec skip is now too fast !.
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Old 23-01-2018, 23:38   #2
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Re: Mpeg4

I use subtitles, and the 2x speed allows me to watch a programme in half the time. We seem to have lost 2x speed. It goes from play(1x) to 1x(again) to 6x.
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Old 24-01-2018, 16:46   #3
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Re: Mpeg4

Quote:
Originally Posted by trueblood View Post
Earlier tonight I was fast searching 5HD and it seemed faster than before, so i checked the system info diagnostics and it appears that they have
switched to H.264(Mpeg4) Video. I checked some other channels and BBC 2hd, Universal hd, itvBe hd, Film 4hd and BT Sport 3 have switched also. While this is a good thing I have found the 2x search or 30 sec skip is now too fast !.
Same here going much quicker than normal.
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Old 24-01-2018, 17:26   #4
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Re: Mpeg4

It's so fast it's almost as if it's an error in frame handling and counting.
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Old 24-01-2018, 17:34   #5
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Re: Mpeg4

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Originally Posted by nomadking View Post
It's so fast it's almost as if it's an error in frame handling and counting.
Wait until they swap to H.265, the compression is insane with that codec.
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Old 24-01-2018, 17:37   #6
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Re: Mpeg4

Not sure the DVB-C standards include H.265 yet?
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Old 24-01-2018, 17:40   #7
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Re: Mpeg4

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Originally Posted by BenMcr View Post
Not sure the DVB-C standards include H.265 yet?
I wasn't talking about imminently
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Old 24-01-2018, 17:49   #8
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Re: Mpeg4

Playing back H264 & H265 videos on my PC doesn't have these problems, so it must be fixable.
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Old 24-01-2018, 19:02   #9
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Re: Mpeg4

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Originally Posted by johnathome View Post
Wait until they swap to H.265, the compression is insane with that codec.
Indeed it is

I have x265 (HEVC) copies of many of my TV episodes, and the 1280 x 720 files are smaller than the older 720 x 404 [x264] copies.

(and way smaller than the older xvid format).
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Old 25-01-2018, 00:31   #10
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Re: Mpeg4

My V6 is unaffected so far. Fast forward was at the usual speed.
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Old 25-01-2018, 09:34   #11
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Re: Mpeg4

Yep, looking at the file sizes on some of this weeks recordings - some channels (BBC1HD) are around 7-8Gb for an hour's HD, others (BBC2 HD) around 2Gb. I'm guessing the 7-8Gb are still MPEG2 currently, perhaps a staggered change maybe.
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Old 25-01-2018, 11:38   #12
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Re: Mpeg4

This might be helpful:
http://www.en.digitalbitrate.com/dtv...ve=209&lang=en
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Old 25-01-2018, 11:58   #13
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Re: Mpeg4

Watching KIRI on Channel 4 last night and FFding through the adverts it went much faster than normal. Is this the H264 malarky?
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Old 25-01-2018, 12:07   #14
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Re: Mpeg4

It does seem a bit wrong at the moment, pressing the 30sec forward button to 4 minutes to bypass the adverts goes way past 4 minutes, to more like 8 minutes then jumps backwards to correct itself. I hope they sort it out and slow it down a tad.
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Old 25-01-2018, 12:08   #15
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Re: Mpeg4

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Originally Posted by nodrogd View Post
The important piece of info would be the GOP setting.

H264 and H265 are capable of being fast forwarded at a reasonable rate.

Is it a problem of handling the situation where MPEG2 and MPEG4 versions of the channel are available and the decoding settings for MPEG2 are used on MPEG4?
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