Combine two videos with different bitrates audio/video but same FPS

[helaku]

I have two video files and I want to combine them to make one video file.
Here are the specifications for the video files:

Video-1:

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : 7
Duration : 10mn 42s
Bit rate : 643 Kbps
Width : 480 pixels
Height : 360 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.124
Stream size : 49.2 MiB (90%)

Audio
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 10
Duration : 10mn 42s
Bit rate : 65.2 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 5.00 MiB (9%)

Video-2:

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : 7
Duration : 10mn 34s
Bit rate : 588 Kbps
Width : 480 pixels
Height : 360 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.114
Stream size : 44.5 MiB (92%)

Audio
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 10
Duration : 10mn 34s
Bit rate : 48.3 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 22.05 KHz
Compression mode : Lossy
Stream size : 3.66 MiB (8%)

From the start when I have tried to combine them there was a problem with the sampling rate: 22.05 KHz vs 44.1 KHz.
I have solved it re-encoding Video-2 to have sampling rate 44.1 KHz like Video-1.
So my question is:
Video-2 must have the exact Bit rate audio/video (and other specifications?) like Video-1 to combine them in one video file? It's a must to have the exact Bit rate (and other specifications?) or it doesn't matter?

Thanks!

[dragonkeeper]

So I have one video that is split in two videos:

:S If they files were split that in turn infers they were once one file.

Video-2

must have the exact Bit rate audio/video like Video-1 to merge the videos in one big video?
It's a must or it doesn't matter?

It matters, most of programs I use if not all, simply refuse to join files unless they matvh perfectly. (i.e fps, bit rate , color space, etc)

[Cornucopia]

No, bitrate differences alone are not usually a problem. Think about it: if you had a single video (+audio) and split it and then recombine it, it should be fine, no? Well, if that video happened to be VBR, then after splitting, one clip might have a different average BR than the other clip, but that won't make it baulk - as long as all the other stuff is matching.

Scott

[helaku]

Sorry dragonkeeper, I have made a mistake.
I have two video files not one.
But that two video files if they are combined (somehow) makes one video file.
It's strange; after I re-encode Video-2 to have the same audio sample rate like Video-1 I have combine them with SolveigMM Video Splitter and it worked but I have my doubts that was OK. That's why I've asked someone for some help/info.

Thanks!

Cornucopia, thanks for your help. I appreciate it.
I will wait for some other suggestions/help/info.

P.S:
As you can see the only difference are those:
- Video Bit rate : 643 Kbps vs 588 Kbps ;
- Bits/(Pixel*Frame) : 0.124 vs 0.114 ;
- Audio Bit rate : 65.2 Kbps vs 48.3 Kbps ;
- Sampling rate : 44.1 KHz vs 22.05 KHz.

[jagabo]

I don't know what Solveig did to the video, but if you want to be sure, just demux the video from the original file and mux it with your new audio. Then join the two MKV files.

[Cornucopia]

Bits/(Pixel*Frame) is derived from bitrate & resolution. If the resolutions of both of those 2 videos match, the Bpp is solely determined by bitrate (which I already said should allow variability). Beside Bpp will ALWAYS be variable in a video that had more than just I-frames, as B- and P- frames are BUILT to take advantage of efficiencies that result in smaller Bpp.

You already said you re-sampled the audio, so that seems to leave just bitrate being different.

However, NOT EVERY PARAMETER IS SEEN BY MEDIAINFO. So, there might be other things going on that can influence merge-ability: Open GOP vs. Closed GOP, or VBV, for example.

Scott

[helaku]

Oh, I understand. Thank you Cornucopia.
I've tried again to combine them with SolveigMM Video Splitter. The process was successfully but the resulted video have some freezing when Video-2 was played (where it was combined).

Bits/(Pixel*Frame) is derived from bitrate & resolution. If the resolutions of both of those 2 videos match, the Bpp is solely determined by bitrate (which I already said should allow variability). Beside Bpp will ALWAYS be variable in a video that had more than just I-frames, as B- and P- frames are BUILT to take advantage of efficiencies that result in smaller Bpp.

You already said you re-sampled the audio, so that seems to leave just bitrate being different.

However, NOT EVERY PARAMETER IS SEEN BY MEDIAINFO. So, there might be other things going on that can influence merge-ability: Open GOP vs. Closed GOP, or VBV, for example.

Scott

Do you know a program that show you all the details that you need?