Voukoder export fails when using In/Out points in Media Encoder

ENDER5214

When exporting with Voukoder in Media Encoder (using any codec), if In/Out points are set, the exported video may have playback problems — such as only audio playing, or the file failing to open at all.

If I export without setting In/Out points, or use the native Adobe encoder, everything works normally.

Example:
If I export a 10-minute segment from a longer Premiere Pro sequence, and the In point is not at the start of the sequence, the resulting video has incorrect timing and cannot play correctly.

Vouk

What "Voukoder Pro" release are you using?

What version of FFmpeg did you install?

ENDER5214

Voukoder Pro version: [2.0.12.0]
FFmpeg version installed: [7.1]
I’m using Adobe Media Encoder 2025 (v25.3) with Premiere Pro 2025.

I inspected the exported MP4 using FFmpeg and found that the video and audio streams start at different timestamps, which likely causes the playback issues:
Audio stream start time: 0.000s
Video stream start time: 2047.345s
Actual video duration: ~99s
Container (MP4) reports total duration: ~2147s
This means the video stream starts much later than the audio stream. Some players (like PotPlayer) are able to compensate, but most players (like VLC or Chrome) fail to play it correctly — either showing a black screen or refusing to open the file.

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

Alles anzeigen

I've also attached my scene.

Vouk

I can reproduce this and I'm working on a fix.

Vouk

I tried work on this just now, but i can't repoduce the issue anymore. I'm a bit confused. I also noticed the code didn't change much in the recent years.

I created a new project with the "universial counting leader"
I selected only the frames showing the "7 seconds" remaining
Selected "Source in / Source out" for range
I got a perfect export of only this section

I used Adobe Premiere Pro CC 26.0.2 for this test and I'm still using the SDK for Premiere Pro 22.

If you can provide more details how to reproduce this issue it'd be helpful.

jhukig

Thanks for the quick response, and sorry for my late reply. I've just enabled email notification for new reply.

I've just tried the universal counting leader, and I encountered the issue.

I've attached my project file and the exported MP4 file here Universal Counting Leader.zip.

I've attached Voukoder Pro log here 2026-05-21_00-43-26.zip.

Voukoder Pro Scene is still the same as in my previous post x264 CPU.zip

Here's the SystemCompatibilityReport.txt generated by Premiere Pro.

Code: Scene Test Log

2026-05-21 00:41:37 (info)	System information:

CPU(s):
  Socket 0:
    Vendor: GenuineIntel
    Model: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
    Cores: 6/12

Memory:
  Total: 65536 MB
  Free: 49249 MB
  Available: 49249 MB

GPU(s):
  Card 0:
    Vendor: NVIDIA
    Model: NVIDIA GeForce GTX 1080 Ti
    Driver version: 32.0.15.8228
  Card 1:
    Vendor: Intel Corporation
    Model: Intel(R) UHD Graphics 630
    Driver version: 30.0.100.9805

Storage:
  Disk 0:
    Vendor: (Standard disk drives)
    Model: Force MP510
    Serial number: 6479_A72B_0160_3435.
    Size: 894 GB
  Disk 0:
    Vendor: (Standard disk drives)
    Model: WDC WDS100T2G0A-00JH30
    Serial number: 2044A0800506
    Size: 931 GB
  Disk 0:
    Vendor: (Standard disk drives)
    Model: Samsung SSD 960 EVO 250GB
    Serial number: 0025_3852_81B0_D21E.
    Size: 232 GB
  Disk 0:
    Vendor: (Standard disk drives)
    Model: TOSHIBA DT01ACA100
    Serial number:            Y7ME3AANS
    Size: 931 GB
  Disk 0:
    Vendor: (Standard disk drives)
    Model: Romex RAMDISK SCSI Device
    Serial number: SN-FANCYRD20082011-T000         
    Size: 15 GB

Operating System:
  Name: Microsoft Windows 11 Pro
  Version: 26200
  Architecture: 64 bit
.
2026-05-21 00:41:37 (info)	Validating license ...
2026-05-21 00:41:40 (info)	License is valid!
2026-05-21 00:41:40 (info)	Counting seat usage ...
2026-05-21 00:41:41 (info)	Active seats: 1 / 1 seats
2026-05-21 00:41:41 (debug)	License responder started ...
2026-05-21 00:41:41 (debug)	License responder stopped.
2026-05-21 00:41:41 (debug)	License responder stopped.
2026-05-21 00:41:41 (debug)	License responder stopped.
2026-05-21 00:41:41 (debug)	License responder stopped.
2026-05-21 00:41:41 (info)	### PHASE: PRE-INIT
2026-05-21 00:41:41 (debug)	Filter config: abuffer@3cebb01ff11c45a3bb7c37b43af9c30c=sample_rate=44100:sample_fmt=flt:channel_layout=stereo,aformat=sample_fmts=fltp,abuffersink@f97246f6e65b433c8f4cad3490e589d9
2026-05-21 00:41:41 (info)	### PHASE: INIT
2026-05-21 00:41:41 (debug)	Dumping filter graphfor NLE Track #1:
+------------------------------------------+
| abuffer@3cebb01ff11c45a3bb7c37b43af9c30c |default--[44100Hz flt:stereo]--auto_aresample_0:default
|                (abuffer)                 |
+------------------------------------------+

                                                        +------------------+
auto_aresample_0:default--[44100Hz fltp:stereo]--default| Parsed_aformat_1 |default--[44100Hz fltp:stereo]--abuffersink@f97246f6e65b433c8f4cad3490e589d9:default
                                                        |    (aformat)     |
                                                        +------------------+

                                                        +----------------------------------------------+
Parsed_aformat_1:default--[44100Hz fltp:stereo]--default| abuffersink@f97246f6e65b433c8f4cad3490e589d9 |
                                                        |                (abuffersink)                 |
                                                        +----------------------------------------------+

                                                                               +------------------+
abuffer@3cebb01ff11c45a3bb7c37b43af9c30c:default--[44100Hz flt:stereo]--default| auto_aresample_0 |default--[44100Hz fltp:stereo]--Parsed_aformat_1:default
                                                                               |   (aresample)    |
                                                                               +------------------+
2026-05-21 00:41:41 (info)	Initializing audio encoder: aac
2026-05-21 00:41:41 (info)	Successfully initialized the output format.
2026-05-21 00:41:41 (info)	### PHASE: PRE-INIT
2026-05-21 00:41:41 (debug)	Filter config: buffer@11aa85b024894f59b206185070671ef5=width=1920:height=1080:pix_fmt=yuv420p:time_base=1/30:pixel_aspect=1/1,format=pix_fmts=yuv420p,buffersink@cd8a67bf01c04d48be9414d5abd5c4f2
2026-05-21 00:41:41 (info)	### PHASE: INIT
2026-05-21 00:41:41 (debug)	Dumping filter graphfor NLE Track #0:
+-----------------------------------------+
| buffer@11aa85b024894f59b206185070671ef5 |default--[1920x1080 1:1 yuv420p]--Parsed_format_1:default
|                (buffer)                 |
+-----------------------------------------+

                                                                                 +-----------------+
buffer@11aa85b024894f59b206185070671ef5:default--[1920x1080 1:1 yuv420p]--default| Parsed_format_1 |default--[1920x1080 1:1 yuv420p]--buffersink@cd8a67bf01c04d48be9414d5abd5c4f2:default
                                                                                 |    (format)     |
                                                                                 +-----------------+

                                                         +---------------------------------------------+
Parsed_format_1:default--[1920x1080 1:1 yuv420p]--default| buffersink@cd8a67bf01c04d48be9414d5abd5c4f2 |
                                                         |                (buffersink)                 |
                                                         +---------------------------------------------+
2026-05-21 00:41:41 (info)	Initializing video encoder: libx264
2026-05-21 00:41:41 (info)	Initialization succeeded.
2026-05-21 00:41:41 (info)	### PHASE: PRE-OPEN
2026-05-21 00:41:41 (info)	Registering 1 audio stream(s)
2026-05-21 00:41:41 (debug)	Registered stream f97246f6-e65b-433c-8f4c-ad3490e589d9:0
2026-05-21 00:41:41 (info)	Registering 1 video stream(s)
2026-05-21 00:41:41 (debug)	Registered stream cd8a67bf-01c0-4d48-be94-14d5abd5c4f2:1
2026-05-21 00:41:41 (info)	Pre-open phase succeeded.
2026-05-21 00:41:41 (info)	### PHASE: OPEN
2026-05-21 00:41:41 (info)	Opening audio encoder plugin 'aac' with params '{"rc":"vbr","global_quality":3,"profile":"aac_low","cutoff":20000}'
2026-05-21 00:41:41 (info)	Opening video encoder plugin 'libx264' with params '{"passes":2,"rc":3,"preset":"veryslow","psy-rd":"0.77:0.22","deblock":"0:0","x264-params":"tune=grain:me=esa:subme=10:merange=48:no-fast-pskip=1:direct=auto:no-weightb=0:keyint=480:min-keyint=1:bframes=16:b-adapt=2:ref=3:rc-lookahead=110:crf=19:qpmin=12:chroma-qp-offset=-4:aq-mode=3:aq-strength=0.7:trellis=2"}'
2026-05-21 00:41:41 (info)	Successfully opened the output format.
2026-05-21 00:41:41 (info)	Open phase succeeded.
2026-05-21 00:41:41 (info)	Waiting for frames ...
2026-05-21 00:41:41 (debug)	License responder stopped.
2026-05-21 00:41:41 (info)	Executing pre-close phase ...
2026-05-21 00:41:41 (info)	Flushing audio encoders ...
2026-05-21 00:41:41 (info)	Flushing video encoders ...
2026-05-21 00:41:42 (debug)	Muxing packet with pts 0
2026-05-21 00:41:42 (info)	Pre-close phase succeeded.
2026-05-21 00:41:42 (info)	Executing close phase ...
2026-05-21 00:41:42 (info)	Closing audio encoders ...
2026-05-21 00:41:42 (info)	Closing audio encoder 'aac'
2026-05-21 00:41:42 (info)	Closing video encoders ...
2026-05-21 00:41:42 (info)	Closing video encoder 'libx264'
2026-05-21 00:41:42 (info)	Successfully closed output.
2026-05-21 00:41:42 (info)	Close phase succeeded.
----
Exported 1 frames in 0.112692 seconds.
This is a theoretical average export speed of 8.87374 fps.
IMPORTANT! Real exports using an NLE might be slower due to the NLE overhead.

Alles anzeigen

I'm a bit relieved that you also encountered the issue although only once: it means it's not a unique case for only my PC. However, I cannot be sure if the issue is because of Premiere Pro itself instead of Voukoder Pro.

Vouk

Yes, I've seen exactly the same when I've tried it the first time.

I opened your project file and exported exactly the region you've had selected, and it worked.

Strange. What exact version of premiere are you using?

jhukig

Zitat von Vouk

Yes, I've seen exactly the same when I've tried it the first time.
I opened your project file and exported exactly the region you've had selected, and it worked.
Strange. What exact version of premiere are you using?

Version 26.2.0 (Build 65)

Previously I used the same Version 26.2.0 (Build 65) with the old Voukoder 13.x to export 10 in/out segments and I have never encountered such issue. I also used Voukoder 13.x with earlier versions of Premiere Pro to export dozens of in/out segments without issue.

In hindsight, maybe future Voukoder Pro can also include the NLE software and version in the log file.

Voukoder export fails when using In/Out points in Media Encoder

Vouk 28. Mai 2025 um 07:21

Vouk 2. Juni 2025 um 08:07

ENDER5214 1. Juli 2025 um 10:51

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