Beiträge von jhukig

jhukig

I have the same issue using the following setup:

In Premiere Pro, I’m exporting a short segment using Source In/Out points instead of the entire sequence, but the output file has mismatched video and audio tracks and incorrect duration as seen in the metadata below. Here are the specific issues:

Wrong overall duration: The file’s duration is 4 min 47 s (the full sequence length), but it should match the selected segment length (24 s 619 ms).
Video starts at the sequence beginning, not at Source In: The output starts from frame zero of the sequence, so there’s black video from the sequence start until the Source In point.
Video ends correctly at Source Out.
Video track Duration is wrong, but its Source duration is correct: The video track’s Duration metadata shows 4 min 47 s (the full sequence), while its Source duration metadata correctly shows 24 s 633 ms — meaning the video stream contains the entire sequence, not just the selected portion.
Audio track has the correct Duration and Source duration: Both Duration and Source duration fields for the audio are correct (24 s 619 ms).
Audio is placed at the beginning of the output file: The audio starts at time 0 instead of being aligned with the Source In point, so it’s completely out of sync with the intended video segment.

Code

General
Complete name                  : R:\2.mp4
Format                         : MPEG-4
Format profile                 : Base Media
Codec ID                       : isom (isom/iso2/avc1/mp41)
File size                      : 27.2 MiB
Duration                       : 4 min 47 s
Overall bit rate mode          : Variable
Overall bit rate               : 794 kb/s
Frame rate                     : 30.000 FPS
Writing application            : Voukoder Pro 3.1.3

Video
ID                             : 2
Format                         : AVC
Format/Info                    : Advanced Video Codec
Format profile                 : Main@L4
Format settings                : CABAC / 1 Ref Frames
Format settings, CABAC         : Yes
Format settings, Reference fra : 1 frame
Format settings, GOP           : M=1, N=12
Codec ID                       : avc1
Codec ID/Info                  : Advanced Video Coding
Duration                       : 4 min 47 s
Source duration                : 24 s 633 ms
Bit rate mode                  : Variable
Bit rate                       : 751 kb/s
Maximum bit rate               : 2 000 kb/s
Width                          : 1 080 pixels
Height                         : 1 920 pixels
Display aspect ratio           : 0.563
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)             : 0.012
Stream size                    : 25.7 MiB (95%)
Source stream size             : 27.2 MiB (100%)
Color range                    : Limited
Color primaries                : BT.709
Transfer characteristics       : BT.709
Matrix coefficients            : BT.709
Codec configuration box        : avcC

Audio
ID                             : 1
Format                         : AAC LC
Format/Info                    : Advanced Audio Codec Low Complexity
Codec ID                       : mp4a-40-2
Duration                       : 24 s 619 ms
Source duration                : 24 s 640 ms
Bit rate mode                  : Constant
Bit rate                       : 2 277 b/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                    : 6.84 KiB (0%)
Source stream size             : 6.85 KiB (0%)
Default                        : Yes
Alternate group                : 1

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