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Old 11th April 2005, 09:52   #1  |  Link
Magno
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Downloading MPEG-2 High-1440@HL and Scalable bitstreams

Hi, everyone!

I have encoded my own implementation of MPEG-2 standard wich has to support all levels and profiles (althought maybe not at full fps for high profiles) and I can't find anywhere test sequences for that profiles. I have searched at FTP's, newsgroups, Berkeley University, and sites related with MPEG2 and had no luck.
I know part 4 in the standard is all about test conformance, and says something about the name of test bitstreams, but no lead to the site where I may download them.

Could somebody help me with an URL with HP@HL, High-1440@HL and some Scalable profile test sequences, please?


Thank you in advance!
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Old 11th April 2005, 10:37   #2  |  Link
ac-chan123
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Under http://standards.iso.org/ittf/Public...mance_Testing/ is 13818 Part 4 but they have no HP@HL.
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Old 11th April 2005, 10:42   #3  |  Link
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Thanks a lot, but all those sequences are the ones i have already used to succesfully test my decoder in MP@ML, but what I am looking for is scalable, HP@HL and High-1440@HL.
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Old 11th April 2005, 10:56   #4  |  Link
ac-chan123
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13818 Part for has none HP bitstreams and i know no source where you will find them.

PS: what is your implementation?
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Old 11th April 2005, 11:12   #5  |  Link
Magno
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Quote:
Originally posted by ac-chan123
PS: what is your implementation?
I have programmed a fully-compliant MPEG-2 decoder which it is supposed to decode till HP@HL, althought I think I won't get 25 fps at 1440x1152 and 4:2:2. For now, I get 100 fps at PAL resolution and 3 Mbps, 76 fps PAL at 6 Mbps, all 4:2:0, and i want to improve 4:2:2 profile seeing as it only reaches 18 fps at NTSC and 25 Mbps. I have also implemented SNR scalability, and I should test it right now.

BTW, somebody knows which rates MPEG2DEc3.dll gets?
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Old 11th April 2005, 11:25   #6  |  Link
ac-chan123
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The framerate change withe the Power of your system(CPU, RAM, Busspped, ...).
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Old 11th April 2005, 11:27   #7  |  Link
Koepi
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You can upsize any input and encode using i.e. libavcodec/FFMPEG. (I'm not sure if they can encode HP@HL though.)

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Old 11th April 2005, 11:30   #8  |  Link
Magno
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Well, yes, I know

Mine is Athlon XP 1400 MHz and 256 RAM. I wanted to know MPEG2Dec3.dll performance with a standard PC.
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Old 11th April 2005, 11:38   #9  |  Link
Magno
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How could I upsize a sequence? I know how to upsize one frame or a picture, but not a whole sequence.

Maybe TMPEGEnc could do the trick?
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Old 11th April 2005, 11:53   #10  |  Link
Koepi
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Hu? You're programming a decoder and don't know about avisynth?
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Old 11th April 2005, 12:02   #11  |  Link
Magno
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hahaha
Yes, I know it and not only use it at home when ripping, but also at work to resize videos; the problem is that I have to compress the output of avisynth into MPEG2 throught a VWF codec using VirtualDub, for example, and I think is easier to do it directly throught TMPEGEnc. Furthermore, I don't know any VWF MPEG2 encoder, and I don't feel confident using ffdshow's as I got crashes when encoding using libavcodec in MPEG4...
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Old 11th April 2005, 12:17   #12  |  Link
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what is VWF? You mean VfW(Video for Windows), or? VfW is not good for MPEG like encoding.
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Old 11th April 2005, 12:28   #13  |  Link
Magno
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Ufff, man!! Today is not my day!!
Yes, i meant VFW (Vide for Windows)... I was replying a post in other forum about Variable Width Font (VWF) at the same moment...

Last edited by Magno; 11th April 2005 at 16:22.
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Old 11th April 2005, 18:40   #14  |  Link
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To anyone interested, I donwloaded one High-1440@ML and some other multi-packet transport streams at ftp://mpeg.cablelabs.com/pub/mpeg/Tektronix/

Now, there are only two more sequences to catch up: some scalable SNR and some High-1440@HL...


PD: Fixed the link

Last edited by Magno; 12th April 2005 at 09:20.
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Old 11th April 2005, 19:52   #15  |  Link
ac-chan123
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i can't login into the ftp server. The name(domain) is unkown.
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Old 11th April 2005, 22:04   #16  |  Link
guada 2
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I have the same problem..
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Old 12th April 2005, 09:19   #17  |  Link
Magno
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Don't try to login throught IE or Mozilla; use a FTP client instead.

IP: mpeg.cablelabs.com
login: anonymous
pass: [none]
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Old 12th April 2005, 11:03   #18  |  Link
ac-chan123
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Here a Link that work also with Browsers:
ftp://anonymous@mpeg.cablelabs.com/pub/mpeg/Tektronix/
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