How to 1-to-1 copying of the video with just the audio changed to stereo Handbrake to Elements?

Forum|Forum|4 years ago
August 18, 2021
3 replies
545 views

I used my trusty Panasonic HC-V727 (HD) camcorder during a recent vacation and subsequently discovered that I must have inadvertently changed the audio setting from “2ch” (i.e. stereo) to 5.1 (since corrected).

I read that Premiere Elements (I have Version 2021 on a WIN10 PC) does not work well (true – on inserting a clip into a new project the audio trace is not shown) and given that I wish to also include clips from a second device (this with stereo audio) it seems I should convert the HC-V727 clips via Handbrake.

The files from the HC-V727 are of filetype “.m2ts” - see below for the data from MediaInfo. When I ran a file through Handbrake with the default settings the audio had been converted to stereo but the resulting file (type .m4v) was only a quarter of the size of the original. I fear a possible loss of video quality due to not using the best presets – also the mini graphic of the clip did not appear in the timeline of a test project – but the preview screen looked OK.

Any advice from an experienced Handbrake user on what the appropriate presets would be would be gratefully received. Ideally I'd like a 1-to-1 copying of the video with just the audio changed to stereo.

MediaInfo Text Output from Original File

General
ID : 1 (0x1)
Complete name : D:\videos-raw\Ibiza-2021\V727\07-20-2021\07-20-2021_090956.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 44.1 MiB
Duration : 14 s 874 ms
Overall bit rate mode : Variable
Overall bit rate : 24.9 Mb/s
Maximum Overall bit rate : 28.0 Mb/s
Recorded date : 2021-07-20 09:09:56+01:00
Writing application : Panasonic

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=3, N=24
Codec ID : 27
Duration : 14 s 360 ms
Bit rate mode : Variable
Bit rate : 23.5 Mb/s
Maximum bit rate : 25.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.227
Stream size : 40.2 MiB (91%)

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : 129
Duration : 14 s 400 ms
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Delay relative to video : -40 ms
Stream size : 675 KiB (1%)
Service kind : Complete Main

Text
ID : 4608 (0x1200)
Menu ID : 1 (0x1)
Format : PGS
Codec ID : 144
Duration : 13 s 856 ms
Delay relative to video : -40 ms

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Tips and tricks

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HOTELECHOMIKEAuthor

Inspiring

One curious thing is that after conversion via Handbrake the first two frames of each clip are black.

Clearly its no problem to remove them from the timeline, however in the Project Assets pull-down all converted clips appear black. Not a show-stopper but a bit annoying.

HOTELECHOMIKEAuthor

Inspiring

Thanks Steve - thats most helpful.

I re-ran Handbrake on one of my files - using "Framerate: same as source" - sounded like a good idea.

Its still does not show the mini graphic of the clip did not appear in the timeline of PE so I need to try a few things.

It seems that Handbrake changed their user interface since you recorded your video so you might like to consider an update.