M2T video seeking is broken #87967

New Issue

user1 · 2021-05-01T15:49:56+02:00

user1 commented

2021-05-01 15:49:56 +02:00

System Information
Operating system: Linux-5.4.0-72-generic-x86_64-with-glibc2.27 64 Bits
Graphics card: GeForce GT 630/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.143

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-04-30 16:49, hash: 5e53504b3b
Worked: 2.93.0

Short description of error
M2T video seeking is broken

Exact steps for others to reproduce the error
footage.m2t

Load file to VSE
Scrub

**System Information** Operating system: Linux-5.4.0-72-generic-x86_64-with-glibc2.27 64 Bits Graphics card: GeForce GT 630/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.143 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-04-30 16:49, hash: `5e53504b3b` Worked: 2.93.0 **Short description of error** M2T video seeking is broken **Exact steps for others to reproduce the error** [footage.m2t](https://archive.blender.org/developer/F9922694/footage.m2t) - Load file to VSE - Scrub

user1 commented

2021-05-01 15:49:56 +02:00

Added subscriber: @user1

Falk David commented

2021-05-03 13:39:51 +02:00

Added subscriber: @filedescriptor

Falk David commented

2021-05-03 13:39:51 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Falk David commented

2021-05-03 13:39:51 +02:00

@user1 Users should only report a single issue per task. Could you please move the second issue to a new report? Thank you.

user1 commented

2021-05-06 15:31:30 +02:00

Could you please help understanding what you consider as 1. issue?

Falk David commented

2021-05-10 08:33:28 +02:00

Imported sound-track is 101 frames off

This would be one report. We try to keep each report to a single topic only since otherwise things will get too chaotic.

> Imported sound-track is 101 frames off This would be one report. We try to keep each report to a single topic only since otherwise things will get too chaotic.

Pratik Borhade commented

2021-06-08 11:49:04 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-06-08 11:49:04 +02:00

3.0.0 Alpha, branch: master, commit date: 2021-04-30 16:49, hash: 5e53504b3b

Not tested yet. But is this still an issue with recent 3.0.0 build (https://builder.blender.org/download/daily/)?

> 3.0.0 Alpha, branch: master, commit date: 2021-04-30 16:49, hash: 5e53504b3b Not tested yet. But is this still an issue with recent 3.0.0 build (https://builder.blender.org/download/daily/)?

Richard Antalik commented

2021-07-06 07:22:22 +02:00

Added subscriber: @iss

Richard Antalik commented

2021-07-06 07:22:22 +02:00

Imported sound-track is 101 frames off

This is usually caused by videos encoded with variable frame rate. Support for such videos isn't yet implemented, so this isn't a bug

While RAM was set to roughly 6GB (from 8GB), Blender uses 100%RAM and 100%Swap → PC freezes → only solution is power off → that ruined my Virtualbox partition → I lost all my firefox bookmarks and my mail-junk-AI-filter-data

Can not reproduce this issue, but there is some overhead that is beyond our control on FFmpeg side. This depends on encoding and it is possible that it would use 8GB RAM even if you set it to 6GB. Not sure what 100% of swap is in GB.

Without proxies the footage only shows the first frame, in grey and large pixels

I think I can reproduce this issue with following file:
footage.m2t

> Imported sound-track is 101 frames off This is usually caused by videos encoded with variable frame rate. Support for such videos isn't yet implemented, so this isn't a bug > While RAM was set to roughly 6GB (from 8GB), Blender uses 100%RAM and 100%Swap → PC freezes → only solution is power off → that ruined my Virtualbox partition → I lost all my firefox bookmarks and my mail-junk-AI-filter-data Can not reproduce this issue, but there is some overhead that is beyond our control on FFmpeg side. This depends on encoding and it is possible that it would use 8GB RAM even if you set it to 6GB. Not sure what 100% of swap is in GB. >Without proxies the footage only shows the first frame, in grey and large pixels I think I can reproduce this issue with following file: [footage.m2t](https://archive.blender.org/developer/F9922694/footage.m2t)

Richard Antalik changed title from ~~Several issues with VSE~~ to M2T video seeking is broken

2021-07-06 07:24:56 +02:00

Richard Antalik commented

2021-07-06 07:24:56 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Richard Antalik commented

2021-07-06 07:26:28 +02:00

@user1 Forgot to mention, that proxies work, but if you want to use 25% size, you must enable it in VSE preview side panel (View > Proxy Render Size). Default is 100%