Put SD on BlueRay

[jriker1]

I have a boat load of AVI files in SD quality. I read that you can fit like 23 hours of SD content on a 50GB disk. I'm using a 25GB disk and with standard tools like ULead provides, it allows me to drag 5 hours or so of video onto the timeline and it says it's exceeding. Tried converting to a smaller MP-4 format but no joy. Any pointers to tutorials or advice on how to properly get these videos onto BlueRay and maximize usability? I have spend a lot of time with Scenarist and CCE with SD content on DVD but BlueRay is new to me.

Thanks.

JR

[deank]

You need to get your AVI files to such with Blu-ray compliant codec (best option is to go for AVC/H.264).

1) Encode all your files to AVC/H.264 using 720x480 for all files which are not 25fps (50i) (or 720x576 for all 25fps/50i) + AC3 audio
2) You will get best results if you store these files in .m2ts container, because you will know exactly how much space each file will occupy later. If you can't get it to m2ts, use MKV container

Once you have all your files in MKV (AVC video + AC3 audio) use tsMuxeR to import them and create a Blu-ray ready-to-burn BDMV folder.

You can also use Handbrake, RipBot or probably multiAVCHD to do all this for you.

Dean

[setarip_old]

@jriker1

Hi!

If it's your intention to play these videos on your PC, is there any reason you can't simply burn them to your 25Gb disc (formatted as UDF 2.50) "as data"?

[rik1138]

If it's your intention to play these videos on your PC, is there any reason you can't simply burn them to your 25Gb disc (formatted as UDF 2.50) "as data"?

I think his goal is to play it on a Blu-ray player...

If it's to play it on a specific blu-ray player, you might see if the player can handle playing straight AVIs. I think this would work on the PS3, and probably others... You may not have to mess with transcoding.

I have spend a lot of time with Scenarist and CCE with SD content on DVD but BlueRay is new to me.

Another you can do if getting AVC/H.264 is causing problems is re-encode everything like you would for DVD. DVD Mpeg2 is Blu-ray compliant, you can use CCE to re-encode it for DVD, then use TSMuxer to put it on the disc... AVC would probably work/look better, but it's an option...

[Ghitulescu]

Another thing you can do if getting AVC/H.264 is causing problems is re-encode everything like you would for DVD. DVD Mpeg2 is Blu-ray compliant, you can use CCE to re-encode it for DVD, then use TSMuxer to put it on the disc... AVC would probably work/look better, but it's an option...

Why reencoding to DVD from AVI when transcoding from his originals is much more rapid?

[rik1138]

Why reencoding to DVD from AVI when transcoding from his originals is much more rapid?

reencoding and transcoding are the same thing- you are converting the video from one thing to another.

AVIs _are_ his originals...

He's having difficulty getting the AVIs into an Mpeg4 codec that will work (VC-1 or H.264), but he's very familiar with DVD encoding. So he can easily transcode the AVIs to DVD Mpeg2 and use them if he wants. H.264 would be better, sure, but if you just can't make it work right, mpeg2 is an alternative...

[MadMonkey57]

My 2 cents...

Here's what I do for my DV AVIs (720x576x25i):

Video: crop (as appropriate), deinterlace (25i --> 50p), enlarge to 1280x720, encode video with x264
Audio: encode to ac3
Container: mux video and audio with tsmuxer into M2TS

I get compliant AVCHD streams out of my AVIs, ready to feed my video editor.

http://forum.doom9.org/showthread.php?t=143915&page=2

[Ghitulescu]

reencoding and transcoding are the same thing- you are converting the video from one thing to another.

Not at all, transcoding is a smart reencoding using the same codec, reusing the info from the previous/original encoding. It is faster as it has no need to analyse the material again (this was done before during the first encoding), at least not as deep.

This is why I recomended transcoding, as the quality increases and the time decreases - remember, the OT had tons of AVIs, if 1 minute is gained for each AVI/DVD, it might be in the end significant.

[rik1138]

Not at all, transcoding is a smart reencoding using the same codec

I've heard the term 'transcoding' used like this:

Transcode your VC-1 to H.264...

Etc. In that case, it's basically a re-encode.

Definition: Transcoding is the direct digital-to-digital conversion of one encoding to another. This is usually done to incompatible or obsolete data in order to convert it into a more suitable format. When transcoding one lossy file to another, the process almost always introduces generation loss.

Transcoding just means you have the file in a digital format, and are converting it to another digital format. If you are using the same (or similar) codecs, then a complete decode/encode may not be necessary, but there's still a generation loss due to the re-compression. The end result is going to be more-or-less the same.

It is faster as it has no need to analyse the material again (this was done before during the first encoding)

You would get better results by re-analyzing the video. Video is analyzed for compression, after it's compressed the analyze data for the source file wouldn't be applicable to the compressed file, the data is completely different. You would want to create new 'analyze' information for the compressed video.

(And the 'analyze' information is not stored in the final file, that's stored in a separate file created by the compression software, so where do you get that from?)

[Ghitulescu]

Where you got that definition from? That's recoding, since you change the codec and you're forced to fully decode the frame and to fully reencode using the new codec.

In case of MPEG-2 smart transcoding means that the codec reuse the motion vectors of the previous coding (saving you from a quite long computational part).

[Blue_MiSfit]

Yes, you can do compressed domain transcoding with MPEG-2 (with ReJig or DVD Shrink), but the quality is usually quite bad compared to doing a proper 2 pass encode at the same target bitrate.

While it's theoretically possible to do this with other formats like H.264, I'm not aware of any software that can do so.

Still, the term "transcoding" is frequently used to describe fully decoding and re-encoding a source to a target, with or without changing the codec.

~MiSfit

[jriker1]

My 2 cents...

Here's what I do for my DV AVIs (720x576x25i):

Video: crop (as appropriate), deinterlace (25i --> 50p), enlarge to 1280x720, encode video with x264
Audio: encode to ac3
Container: mux video and audio with tsmuxer into M2TS

I get compliant AVCHD streams out of my AVIs, ready to feed my video editor.

http://forum.doom9.org/showthread.php?t=143915&page=2


Thanks for the info I'll give it a try. I demux the audio from my avi files with virtualdubmod and get mp3 files. Is there a current best to use tool for creating ac3 files? Used to use Sonic Soft Encode.

Thanks.

JR

[MadMonkey57]

Thanks for the info I'll give it a try. I demux the audio from my avi files with virtualdubmod and get mp3 files. Is there a current best to use tool for creating ac3 files? Used to use Sonic Soft Encode.

Thanks.

JR

I usually encode to ac3 this way:

wavi <avs_script> - | aften -b <bitrate> -readtoeof 1 - <ac3_output>
i.e: wavi input.avs - | aften -b 256 -readtoeof 1 - output.ac3

[rik1138]

Where you got that definition from? That's recoding, since you change the codec and you're forced to fully decode the frame and to fully reencode using the new codec.


That's the definition, look it up. :cool:

In Hollywood, most of the major companies that do all of the work for the studios have a 'transcoding dept'. Their job is to convert a stored digital video file to whatever format the studio needs (DVD, Blu-ray, iPod, streaming, etc). Transcoding is just re-encoding from digital to digital formats.

Like I said, there's different ways to transcode files- complete re-encoding or 'smart transcoding' as you call it...

In case of MPEG-2 smart transcoding means that the codec reuse the motion vectors of the previous coding (saving you from a quite long computational part).

Again, this will not produce optimal results as the motion vector information will not apply to the encoded file (since it came from a source file, which is assumed to be uncompressed). It's far better to create new motion information based on the new source file (the compressed file).

[jriker1]

My 2 cents...

Here's what I do for my DV AVIs (720x576x25i):

Video: crop (as appropriate), deinterlace (25i --> 50p), enlarge to 1280x720, encode video with x264
Audio: encode to ac3
Container: mux video and audio with tsmuxer into M2TS

I get compliant AVCHD streams out of my AVIs, ready to feed my video editor.

http://forum.doom9.org/showthread.php?t=143915&page=2

What tools do you use for each of these steps? Want to make sure whatever I do meets the guidelines/standards for blu-ray type content.

Thanks.

JR

[jriker1]

You need to get your AVI files to such with Blu-ray compliant codec (best option is to go for AVC/H.264).

1) Encode all your files to AVC/H.264 using 720x480 for all files which are not 25fps (50i) (or 720x576 for all 25fps/50i) + AC3 audio
2) You will get best results if you store these files in .m2ts container, because you will know exactly how much space each file will occupy later. If you can't get it to m2ts, use MKV container

Once you have all your files in MKV (AVC video + AC3 audio) use tsMuxeR to import them and create a Blu-ray ready-to-burn BDMV folder.

You can also use Handbrake, RipBot or probably multiAVCHD to do all this for you.

Dean

On the above, isn't M2TS only for 1440xwhatever or 1920xwhatever resoultion? On Sony Vegas 9 it only allows those two options when I pick M2TS for the container.

JR

[vamsiklak]

i did transfer my home video to bluray everything works good and i did use mutliavchd
the only problem is my dvd is 7.0GB all are .99gb files when iload it change to m2ts it took it as .99gb files and later i used multiavchd

my question is i want to combine dvd files as one file or i want to combine all 7 m2ts files as one

is itpossible please help