Rendering MP4 file to Mpeg2 DVD compatible …

[Graham Bernard]

Your 140mb MP4 is 50mins? My 141mb is only 17 seconds. Sounds like you’ve got some hefty compression going on.

Just for evidence based results:

Time took 8 seconds for 141mb MP4 >>> 9.9mb MPEG2

A 59 minute MP4, 890mb took 16 minutes.

So, you need to find out what is hiding inside that MP4 and what your Project Setting are set to. There’s some major heavy lifting going on.

MP4 is only an envelope. It’s what is inside that counts.

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[Jean-pierre Desrochers]

Download the following video from Youtube
using any downloader:
https://www.youtube.com/watch?v=nHKUGwFUyBw

It’s a MP4 file, 139megs and last 48min.
This is the type of file I’m trying to convert to MPG2.
JP

J-P Desrochers
Quebec, Canada

[Graham Bernard]

YouTube compression? Maybe too much. I dunno. What does MediaInfo say about it?

Cheers

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[Jean-pierre Desrochers]

> What does MediaInfo say about it?
Here is the file info: (sorry it’s a long one..)

General
Complete name : C:\Documents and Settings\ID004823\Bureau\test.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 140 MiB
Duration : 48mn 8s
Overall bit rate mode : Variable
Overall bit rate : 406 Kbps
Encoded date : UTC 2013-12-01 04:20:30
Tagged date : UTC 2013-12-01 04:20:30
gsst : 0
gstd : 2888260
gssd : BADC28483HH1390503570446289
gshh : r12—sn-p5qlsnle.googlevideo.com

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L2.1
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=60
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 48mn 8s
Bit rate : 307 Kbps
Maximum bit rate : 1 312 Kbps
Width : 480 pixels
Height : 360 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.071
Stream size : 106 MiB (76%)
Tagged date : UTC 2013-12-01 04:20:49

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 48mn 8s
Bit rate mode : Variable
Bit rate : 96.0 Kbps
Maximum bit rate : 102 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 33.1 MiB (24%)
Title : IsoMedia File Produced by Google, 5-11-2011
Encoded date : UTC 2013-12-01 04:20:40
Tagged date : UTC 2013-12-01 04:20:49

J-P Desrochers
Quebec, Canada

[Norman Black]

I downloaded the file. It is 236MB, not 140MB. I downloaded the 480 sized version. Maybe you had a smaller version like 360.

Here is the Mediainfo data
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 236 MiB
Duration : 48mn 8s
Overall bit rate : 686 Kbps
Writing application : Lavf54.63.104

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 48mn 8s
Bit rate : 555 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.072
Stream size : 191 MiB (81%)

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 48mn 8s
Bit rate mode : Constant
Bit rate : 126 Kbps
Channel count : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 43.2 MiB (18%)

This is very compressed but that is not the point.

You want to convert to mpeg-2. When converting to something else you want to keep the same visual quality without an excessively large file. This all comes down to video bitrate. Bitrate determines the file size, NOT the type of video codec like AVC or mpeg-2. Now it gets more technical. Some codecs are more efficient at compressing than others. MPEG-4 AVC/H.264 is better at compression than MPEG-2. How much? That is a debate in itself but the dogma is around 2x better for AVC over mpeg-2.

What does that mean to you. This video is 555Kb/s bitrate AVC so maybe try 1Mb/s mpeg-2 for this example. This assumes you are keeping the video size the same. In this example 640×480.

The final judge is always your eyes and only trial and error and experience will let you know how low a bitrate you can use to get the video quality you desire.

[Jean-pierre Desrochers]

>I downloaded the file. It is 236MB, not 140MB.
>I downloaded the 480 sized version.
>Maybe you had a smaller version like 360.

Interesting… I downloadeded it using https://www.keepvid.com
and selected:
» Download MP4 « – (Max 480p)- 139.7 MB

Hmmmm…

J-P Desrochers
Quebec, Canada

[Norman Black]

I use the YTD Video Downloader and used “best available” for the file download quality. Looking at that video, 480 (640×480) is the largest version available. Your download was 480×360 which is one size smaller.

[Graham Bernard]

Thanks Norman.

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge

[Jean-pierre Desrochers]

Thank you guys !
I’ll try tonite a MPG2 rendering using constant video bitrate of around 1mb/sec keeping the 640×480 aspect ratio
and check the final result (pleasing or not…)

J-P Desrochers
Quebec, Canada

[Simon Laidlaw]

Another thing to consider is that if you are Using Sony’s DVD Architect to create the DVDs you can just drag and drop your MP4 file straight into the DVDA program and it will create the DVD no bother

http://www.cutmustard.tv