1920 x 1080 30p (29.97) Editor Without Reencoding

[johnnyquid]

I was looking for a simple editor to combine multiple short 1920 x 1080 30p (29.97) video clips and add audio tracks with reencoding the clips. I have Nero Video but its smart encoding feature always wants to re-encode 30p (it would work if it was 60i or others). Anybody have suggestions? Freeware would be preferred.

Thanks,

[Baldrick]

Clips? Please give more details.

You can join and add audio tracks with multiplexers like mkvtoolnix, mp4box and tsmuxer.

[newpball]

1080/30p?

What codec?
What kind of footage is it?

[johnnyquid]

My appologies for not including more information. Most clips are in the format at the end of this post. I have a few clips that I was planning to convert to be the same probably using ffmpeg. Some of the video files do not have audio tracks at all so I will need have a process that takes care of that too.

For the files that were all like the below format, I did try using mp4box to merge them all. It seems like I was getting audio video synch issues though. Perhaps that was because the audio and video streams were not the same length.

If there is not a program that will handle the joining and synching then I was planning on demuxing the video clips and making the audio clips be the same length as the video streams using Audacity then muxing them back togather. I would think that if I did that it would take care of the audio video synch issue that I noticed.

I have not figured out all the different command line options that I would need get the non-matching files to be like the below format but I assume that it can be done.

It should not be that hard to do the above but it would have been much simiplier if Nero Video did not want to reencode all the clips as I do not want to lose quality if I do not need too.

General
Complete name : \\HAL\photos\2015_Tahoma_Soccer\Goal-3-27-1-Cris.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 23.9 MiB
Duration : 15s 115ms
Overall bit rate : 13.2 Mbps
Encoded date : UTC 2015-05-04 02:43:21
Tagged date : UTC 2015-05-04 02:43:21

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L4
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 15s 115ms
Source duration : 16s 49ms
Bit rate : 12.2 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
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) : 0.197
Stream size : 22.0 MiB (92%)
Source stream size : 23.4 MiB (98%)
Language : English
Encoded date : UTC 2015-05-04 02:43:21
Tagged date : UTC 2015-05-04 02:43:21
Color range : Full
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 15s 115ms
Source duration : 15s 125ms
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 479 KiB (2%)
Source stream size : 479 KiB (2%)
Language : English
Encoded date : UTC 2015-05-04 02:43:21
Tagged date : UTC 2015-05-04 02:43:21

[newpball]

Are those original sources or source that are crippled to 30p which especially for sports may be less than palatable. If they are originals I would strongly advice you to go 1080/60p and use a higher bitrate!