@MAA, @CubeAce

Hi

. . . . MP4 format with the same frame rate but two channel audio and 22..05kHz (nearest equivalent.) . . . .

I would suggest a Samplerate for the audio of 48kHz stereo - this is the standard for video and is a simple tripling of the original samplerate - though depending on the converter* you may end up with the audio in one channel only this can be fixed in the video editor.

* using AviDemux or Handbrake the audio can be remixed to stereo.

HTH

John EB
Forum Moderator

Thanks for your help, guys! I'm not there yet?

I converted the file using VLC Media Player set to Video - H.264+MP3 (MP4) and tried audio sample rates of 22050 and 48000 Hz. Still no sound. The imported object in MEP does however now show the waveform display but it is a flat line. Here is Mediainfo:

General

Complete name                            P1070879.mp4

Format                                   : MPEG-4

Format profile                           : Base Media

Codec ID                                 : isom (mp41/avc1)

File size                                : 18.3 MiB

Duration                                 : 50 s 400 ms

Overall bit rate                         : 3 050 kb/s

Encoded date                             : UTC 2022-08-22 17:40:02

Tagged date                              : UTC 2022-08-22 17:40:02

Writing application                      : vlc 3.0.17.4 stream output

Video

ID                                       : 1

Format                                   : AVC

Format/Info                              : Advanced Video Codec

Format profile                           : High@L3.1

Format settings                          : CABAC / 4 Ref Frames

Format settings, CABAC                   : Yes

Format settings, Reference frames        : 4 frames

Codec ID                                 : avc1

Codec ID/Info                            : Advanced Video Coding

Duration                                 : 50 s 400 ms

Bit rate                                 : 2 912 kb/s

Width                                    : 1 280 pixels

Height                                   : 720 pixels

Display aspect ratio                     : 16:9

Frame rate                               : 30.000 FPS

Color space                              : YUV

Chroma subsampling                       : 4:2:0

Bit depth                                : 8 bits

Scan type                                : Progressive

Bits/(Pixel*Frame)                       : 0.105

Stream size                              : 17.5 MiB (96%)

Writing library                          : x264 core 155

Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x13 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=1 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

Language                                 : English

Encoded date                             : UTC 2022-08-22 17:40:02

Tagged date                              : UTC 2022-08-22 17:40:02

Color range                              : Full

Matrix coefficients                      : BT.470 System B/G

Codec configuration box                  : avcC

Audio

ID                                       : 2

Format                                   : MPEG Audio

Format version                           : Version 2

Format profile                           : Layer 2

Codec ID                                 : mp4a-69

Duration                                 : 50 s 335 ms

Bit rate mode                            : Constant

Bit rate                                 : 128 kb/s

Channel(s)                               : 2 channels

Sampling rate                            : 22.05 kHz

Compression mode                         : Lossy

Stream size                              : 785 KiB (4%)

Language                                 : English

Encoded date                             : UTC 2022-08-22 17:40:02

Tagged date                              : UTC 2022-08-22 17:40:02

Thanks again. What can I try next?

@MAA

Hi

. . . . H.264+MP3 (MP4)  . . . .

MP3 encoded audio is not supported with h.264 video. MP4 h.264 audio standard is AAC encoded.

John EB

@MAA

Ideally you want the audio to aac, not mp4a-69 which I think strictly speaking should have been read by MMS as an mp3 extension but is clearly not being recognised in this instance. Also it looks like the file has been compressed a lot. Has the image quality suffered?

I personally would not use VLC to do this. Use Handbrake as John EB suggested. It is a free download.

Also up-sampling to 48kHz would do no harm as John suggests, there is just very little if any audio quality to be gained by doing so and a very slightly larger file size.

Ray.

@johnebaker

Is that just within MEP (MMS) John?. I'm sure I have seen mp3 used within H264.

https://www.epiphan.com/userguides/pearl-2/Content/capture/channelCodecFormatCompat.htm

Ray.

@CubeAce

Hi

MP3 with h.264 in a mp4 container file is possible - just not as specified by the h.264 standard which is AAC or AC3 encoded audio.

The 'problem' is with QT. This does support 'non standard' video + audio combinations, eg PCM and possibly other formats of audio encoding, and sample rates for the audio in the MOV file format, as seen the original MediaInfo data posted above.

John EB

I downloaded HandBrake, converted several video files and the sound is now there. Fantastic! Life is good. Thank you all for your excellent help!

MAA

@MAA

Hi

Thanks for the feedback.

Happy editing

John EB

Hi there - jumping on this thread ..

I have been having the exact same issue, and converting the MOV files with Handbrake works great, BUT...

the converted mp4 files have the first 4 frames of the clip repeated at the end only in MEP. That means I have to trim every clip by 4 frames :-(

The files play perfectly in VLC or Windows, but in MEP (and exported files) there is an extra 3-4 frames from the beginning added to the end of each clip. Any ideas on how to fix this ?

Thank you in advance !

@AndyMo Hi, the file information posted in comments above is from an app called MediaInfo, download it, it's quick & free https://mediaarea.net/en/MediaInfo
After downloading, right click on the media in your Windows folder, open MediaInfo, choose Text from the View option, select all, copy & paste in a comment here,

like this 👍

You could maybe share a sample video on Google Drive, it needs to be one of the orig unedited files straight from the camera, - Open Google, top right there's a square of dots - Google Drive, drag the file on that window, once it's uploaded right click - Share, there's an option at the bottom of the pop-up window to - Share with anyone who has this link, Copy, then on here use the chain button at the top of a new comment to share that link,

In MEP preferences there's an option to Crop videos, this auto removes however many frames you choose when you import the media, it may save you the bother of doing yourself each time but you're just skirting the issue doing this,

Also can you go to your icon at the top, click it - My Profile, & fill in your Signature with your Magix version, Windows version & system specs, full name of CPU, GPU, & amount of RAM etc. this will then show at the bottom of the comments 👍 thanks

Hi @Former user,

this is the video file info from MediaInfo:

General
Complete name                            : C:\Users\AndyMo\Videos\Handbrake OUT\10 - 26 - Fortress Of Louisbourg Ns - 117 2.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (mp42/iso2/avc1/mp41)
File size                                : 2.32 MiB
Duration                                 : 7 s 500 ms
Overall bit rate                         : 2 593 kb/s
Encoded date                             : UTC 2022-08-24 20:17:52
Tagged date                              : UTC 2022-08-24 20:17:52
Writing application                      : HandBrake 1.5.1 2022011000

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3.1
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 7 s 500 ms
Bit rate                                 : 2 431 kb/s
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 30.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.088
Stream size                              : 2.17 MiB (94%)
Writing library                          : x264 core 164 r3065 ae03d92
Encoding settings                        : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=300 / keyint_min=30 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Encoded date                             : UTC 2022-08-24 20:17:52
Tagged date                              : UTC 2022-08-24 20:17:52
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.470 System B/G
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 7 s 488 ms
Source duration                          : 7 s 552 ms
Bit rate mode                            : Constant
Bit rate                                 : 155 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 16.0 kHz
Frame rate                               : 15.625 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 141 KiB (6%)
Source stream size                       : 143 KiB (6%)
Title                                    : Stereo
Language                                 : English
Default                                  : Yes
Alternate group                          : 1
Encoded date                             : UTC 2022-08-24 20:17:52
Tagged date                              : UTC 2022-08-24 20:17:52
mdhd_Duration                            : 7488

sig updated ;-)

@AndyMo

Hi Andy.

Could you also post the MediaInfo data on the original file before conversion?

What produced the original file? If it was a screen capture program, then the problem probably starts there.

Ray.

Hi @CubeAce,

Below is a Mediainfo for the original file. It was taken with a Panasonic DMC-TS3 camera back in 2015.

Thank you for any help

--

General
Complete name                            : C:\Users\AndyMo\Videos\Handbrake OUT\10 - 26 - Fortress of Louisbourg NS - 117.MOV
Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   2007.09.04 (qt  /pana)
File size                                : 27.3 MiB
Duration                                 : 7 s 500 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 30.6 Mb/s
Encoded date                             : UTC 2015-08-26 13:14:10
Tagged date                              : UTC 2015-08-26 13:14:10
Writing library                          : pana

Video
ID                                       : 1
Format                                   : JPEG
Codec ID                                 : jpeg
Duration                                 : 7 s 500 ms
Bit rate mode                            : Variable
Bit rate                                 : 30.1 Mb/s
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 30.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 1.087
Stream size                              : 26.9 MiB (98%)
Language                                 : English
Encoded date                             : UTC 2015-08-26 13:14:10
Tagged date                              : UTC 2015-08-26 13:14:10

Audio
ID                                       : 2
Format                                   : PCM
Format settings                          : Big / Signed
Codec ID                                 : twos
Duration                                 : 7 s 500 ms
Bit rate mode                            : Constant
Bit rate                                 : 512 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 16.0 kHz
Bit depth                                : 16 bits
Stream size                              : 469 KiB (2%)
Language                                 : English
Encoded date                             : UTC 2015-08-26 13:14:10
Tagged date                              : UTC 2015-08-26 13:14:10

@AndyMo

Hi Andy.

This file looks almost identical to the original posters file so the solution should be the same. Needs converting to a better audio sampling rate.

Ray.

@AndyMo

Hi Andy.

This file looks almost identical to the original posters file so the solution should be the same. Needs converting to a better audio sampling rate.

Ray.

I did that, which solved the no-audio issue, but then generated a new problem. MEP is repeating the first 3-4 frames of the video at the end of the handbrake output (which play correctly outside of MEP).

If frames were letters, MEP is displaying the handbrake output as:

abcdefghijklmnoabdc

I have been tweaking many different settings on handbrake, and MEP still does this frame-add/clip-repeat.

thanks for your assistance

@AndyMo

I'm afraid I'm not really a handbrake user myself Andy and have no idea why that would happen.

Maybe @johnebaker has an answer to that one.

Ray.

@AndyMo

Andy, could you put it on Google Drive or similar so we can have a look at the file?

Both a before (MOV) and after file (MP4) are in the following Google Drive. Please let me know if you get the same issue. Thank you

https://drive.google.com/drive/folders/1aTXNIR8ImKwOLwSChjyn12XdSTMQpqR7?usp=sharing

Both a before (MOV) and after file (MP4) are in the following Google Drive. Please let me know if you get the same issue. Thank you

https://drive.google.com/drive/folders/1aTXNIR8ImKwOLwSChjyn12XdSTMQpqR7?usp=sharing

 

I have also just uploaded a video taken from my phone of what I am seeing in MEP, if that helps.

@AndyMo

Not seeing anything untoward here, Andy. I converted your MOV with Handbrake and the last few frames are OK. The only thing I changed in Handbrake was the video tab:

Your sig says 20.0.1.65; the latest version of MEP 2021 is 20.0.1.80.

Horse go faster with new shoes?

@AndyMo

Hi

The first issue I spotted is your version of MEP 2021 is missing 3 updates .73, .79 and .80.

Thanks for the files - I will be testing on v20.0.1.80 shortly and using both Handbrale and AviDemux for conversion.

John EB