Running 2.7.0 on Win10 64
Video seems ok .........
Realtek Hi Def Audio
Copy / Copy on Video / Audio
Edit ---> Pref ---> Audio made sure set to Win32 (only option other than Dummy)
Edit ---> Pref ---> Audio tried all of the downmixing options with Win32 .....no luck
Under Audio Track 1 is selected : Track 0 from Video (ACC Stereo 128kps)
Clicking on Config : No dialog box
File has sound on VLC 30 , Windows Movies and TV etc
Info on File
=====================================================
Video
=====================================================
Codec 4CC: H264
Image Size: 1920 x 1080
Aspect Ratio: 1:1 (1:1)
Frame Rate: 59.941 fps
Total Duration: 00:01:38.598
=====================================================
Extra Video Properties
=====================================================
ExtraDataSize: 67
Extra data: 01 64 00 2A FF E1 00 11 27 64
=====================================================
Audio
=====================================================
Codec: AAC
Channels: Stereo
Bitrate: 16000 Bps / 128 kbps
Frequency: 48000 Hz
Total Duration: 00:01:38.560
From File MetaData:
General
Complete name : C:\Users\Tom\Desktop\2018 Feb New Orleans\115_0214\MVI_0307.MP4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp42/avc1/CAEP)
File size : 411 MiB
Duration : 1 min 38 s
Overall bit rate : 35.0 Mb/s
Encoded date : UTC 2018-02-14 13:23:13
Tagged date : UTC 2018-02-14 13:23:13
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Format settings, GOP : M=3, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 38 s
Bit rate : 34.7 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 59.940 (60000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.279
Stream size : 408 MiB (99%)
Language : English
Encoded date : UTC 2018-02-14 13:23:13
Tagged date : UTC 2018-02-14 13:23:13
Color range : Limited
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 : 1 min 38 s
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 3.00 MiB (1%)
Language : English
Encoded date : UTC 2018-02-14 13:23:13
Tagged date : UTC 2018-02-14 13:23:13
I reloaded Avidemux, and the sound returned .......however on some videos (taken with my Canon Vixia HRA800 in 35 Mbps / 60 fps https://www.usa.canon.com/internet/portal/us/home/products/details/camcorders/consumer/vixia/vixia-hf-r800 ) the audio drops out. If I restart playback, either at the beginning or a few sec earlier, SOMETIMES it comes back.
Any settings I could adjust ?
Please try the latest nightly (http://avidemux.org/nightly/win64/) (currently it is r180216). On playback start, Avidemux initialized audio twice to work around an old issue with ALSA on Linux. This workaround has been removed on 2017-12-14. It may or may not have effect on the problem you describe here, so please test and report back.
As often happens with Support calls........your "posting" seems to have corrected the problem ........this despite the multiple restarts / boots to the laptop prior to posting the problem.
If the "problem" resurfaces, I will install nightly and report back
Thanks..........
Why do SoftWarriors set a Preference menu item to a value which prevents proper operation?
Searching internet for the problem of no sound in Edit mode for 2 hours I finally came to the Preferences indicator. Sure enough Audio was set to Dummy. Could Thinking be switched on before a file is made available to the public of who many are used to install programs that work immediately when stated.