*.mp4... hmmm... What to do with it?

NicholasDWolfwood · Post by **NicholasDWolfwood** » Fri May 07, 2004 9:43 pm

VegettoEX wrote:
NicholasDWolfwood wrote:Izumi...why the fuck would somebody re-encode the video in an mp4 when it's usually XviD and lossy already?
Umm... converting it over to HuffyUV ain't gonna lose anything... I need everything in a standard MPEG-2 to play back via the Hollywood card.

Umm....converting it from [Source -> XviD ->] HuffYUV -> MPEG-2 = lossy.

DJ_Izumi · Post by **DJ_Izumi** » Fri May 07, 2004 9:47 pm

NicholasDWolfwood wrote:Umm....converting it from [Source -> XviD ->] HuffYUV -> MPEG-2 = lossy.

He needs it in Mpeg-2. Do you understand this? We all understand that there is no way to transcode from one lossy codec to another lossy codec, but he still NEEDS to do it. We all understand this concept, why do you think we don't?

What we're saying is, it's not lossy to convert from Xvid to HufYUV. The interm format he's using for transcoding isn't lossy, that's all. None of this is THAT complicated, try and keep up, okay?

sysKin · Post by **sysKin** » Fri May 07, 2004 10:13 pm

NicholasDWolfwood wrote:Izumi...why the fuck would somebody re-encode the video in an mp4 when it's usually XviD and lossy already?

Yes exactly - reencoding xvid into xvid is of course hellufa better than using VHS as a medium, but it's quite a bad thing to do, especially if you can just direct stream copy both video and sound into some other container.
If you like AVI, you might reencode sound, but there is no good reason (except for simplicity/laziness? lol) to reencode video.

Radek

sysKin · Post by **sysKin** » Fri May 07, 2004 10:16 pm

DJ_Izumi wrote: He needs it in Mpeg-2. Do you understand this?

/me baka, missed the second page of the discussion. Sorry....

Radek

Tab. · Post by **Tab.** » Sat May 08, 2004 2:03 am

Though it should be possible, albeit probably difficult, to losslessley transcode from simple profile mpeg 4 to mpeg 2. I can't imagine any format differences that couldn't be conquered without destroying the quantized or MV data.

VegettoEX · Post by **VegettoEX** » Sat May 08, 2004 4:23 pm

Regardless...

When the MPEG-2 is made, it's going to be standard Quu-archive-quality ridiculous bitrate. The person sending it knew that this conversion was going to be made. The process of getting it from MP4 >> Huffy >> MPEG-2 isn't going to lose much.

Nic, you're presuming WAAAAY too much without really reading what's going on...

NME · Post by **NME** » Sun May 09, 2004 5:49 pm

BUT THAT'S WHAT NIC DOES!!!