VS Ultimate 21 - Audio Render Corruption

[rapscallion]

Hi Gang,

I've rendered two separate videos to XAVC S MP4 4K - properties are as follows:

MPEG-4 Files
24 bits, 3840 x 2160, 50 fps
Frame-based
H.264 High Profile Video: 65000 Kbps, 16:9
48000 Hz, 16 Bit, Stereo
MPEG AAC Audio: 192 Kbps

Audio in the separate renders is fine

When I then join the two files in a new project and render them using exactly the same above config, there are slight 'pop's in the audio files

I've tried splitting out the audio and rendering that separately in the hope the issue will resolve, but no luck.

Any ideas?

[lata]

Can you confirm that the properties you show are the properties of the actual video file.
That the render properties are the same as your video file?
If no
What are the properties of your project?
What are the properties of the video file?
From Share try deselecting Smart Render before hitting Start

[rapscallion]

Can you confirm that the properties you show are the properties of the actual video file.
That the render properties are the same as your video file?
If no
What are the properties of your project?
What are the properties of the video file?
From Share try deselecting Smart Render before hitting Start

Hi Lata - thanx for taking interest.

Of the two reported videos, only the first's audio appears to be glitching.

The two original videos were captured on various iPhones in 1080 & 4K. They were then edited in VS 21 and combined with a song, downloaded from YT, with the following properties (Audio codec: MPEG Audio - Version 1 > Profile: Layer 3 > Bitrate: 160 kbit/s CBR > Sampling rate: 48 000 Hz > Encoded library: LAMEU) then the video/ audio were rendered in VS 21 using XAVC S MP4 4K.

The resultant video / audio from above was perfect. It's only then, since trying to re-render it with the second video (whose properties are exactly the same as above minus any YT song) again using XAVC S MP4 4K that the first video now experiences occasional audio 'pops'.

re video file properties: as reported by 'MKV to AVI Converter' see below

re project properties: MPEG-4 Files > 24 bits, 3840 x 2160, 240 fps > Frame-based
H.264 High Profile Video: 38114 Kbps 44100 Hz, 16 Bit, Stereo > MPEG AAC Audio: 198 Kbps

re 'deselecting Smart Render...' - will try that tommorrow as it's now 10:30pm in Tassie Australia (zzzzzzz) - big thanx for that suggestion

video file properties:

GENERAL INFO

File size: 1 501 336 660 bytes (1.40 GB)
Overall bitrate: 61 410 kbit/s
Format: XAVC
Encoded application:
Number of all data streams: 2
Number of video streams: 1
Number of audio streams: 1

-----------------------------------------------------------------------
VIDEO STREAM

Video codec: AVC
Profile: High@L5.2
Bitrate: 61 214 kbit/s
Resolution: 3 840 x 2 160
Display aspect: 16:9
Frames / second: 50.00
Scan type: progressive
Pixel format: yuv420p(tv
Bits / pixel: 0.148
Frames:~ 9 779
Stream size: 1.39 GB (100%)
Encoded library:
Stream index: 0

-----------------------------------------------------------------------
AUDIO STREAM 1
Audio codec: AAC
Profile:
Bitrate: 192 kbit/s CBR
Channels: 2
Sampling rate: 48 000 Hz
Bits per sample:
Samples:~ 9 387 024
Video delay: 0 ms
Language: English
Stream size: 4.48 MB (0%)
Encoded library:
Stream index: 1

-----------------------------------------------------------------------
DATA STREAMS: (FFmpeg)
1: Stream #0:0(eng) - Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 61214 kb/s, 50 fps, 50 tbr, 50k tbn, 100 tbc (default)
2: Stream #0:1(eng) - Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)

-----------------------------------------------------------------------
MediaInfo

General
Format : XAVC
Codec ID : XAVC (XAVC/mp42/iso2)
File size : 1.40 GiB
Duration : 3 min 15 s
Overall bit rate mode : Variable
Overall bit rate : 61.4 Mb/s
Encoded date : UTC 2023-10-20 21:42:02
Tagged date : UTC 2023-10-20 21:42:02

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 2 frames
Format settings, GOP : M=1, N=25
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 3 min 15 s
Bit rate mode : Variable
Bit rate : 61.2 Mb/s
Maximum bit rate : 65.0 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 50.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.148
Stream size : 1.39 GiB (100%)
Language : English
Encoded date : UTC 2023-10-20 21:42:02
Tagged date : UTC 2023-10-20 21:42:02
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 3 min 15 s
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 4.48 MiB (0%)
Language : English
Encoded date : UTC 2023-10-20 21:42:02
Tagged date : UTC 2023-10-20 21:42:02