0002338: Simultaneous 2-pass renders: log file clobbering

View Issue Details [ Jump to Notes ]

[ Issue History ] [ Print ]

Project

Category

View Status

Date Submitted

Last Update

0002338

Kdenlive

Rendering

public

2011-09-30 09:37

2011-11-01 18:56

Reporter

Snild

Assigned To

j-b-m

Priority

normal

Severity

minor

Reproducibility

sometimes

Status

closed

Resolution

fixed

Platform

64 bit

Ubuntu

OS Version

10.10

Product Version

0.7.8

Target Version

Fixed in Version

0.8.2

Summary

0002338: Simultaneous 2-pass renders: log file clobbering

Description

It seems simultaneous 2-pass renders overwrites each others' log files; all of them are using x264_2pass.log. For me, this led to a couple of rendered files without any video. The problem is probably timing-dependent.

Steps To Reproduce

1. Enqueue multiple two-pass renderings (I used the default H.264 2000k 2-pass, modified to use 256kbps audio). The first one will auto-start.
2. Select an enqueued job and click the "Start Job" button.
3. These are now both using the same log file for their pass logs.

Additional Information

When I encountered the problem (haven't actually tried again, because I'm fairly sure I've identified the cause), I had one long-running render running first, then started two shorter ones. Both of the short renders came out as audio only (though during the first pass, both files grew large enough to indicate video was being written at that point). When I noticed this and realized the cause, I aborted the long-running render (since it would be running for a couple of hours more).

Tags

No tags attached.

Build/Install Method

Distribution package

Attached Files

Relationships

Notes
(0007412) j-b-m (administrator) 2011-10-07 00:10	This is actually an FFmpeg issue, see report in the libav bugtracker: http://roundup.libav.org/issue303 [^] Nothing can be done on the Kdenlive side...

(0007413) j-b-m (administrator) 2011-10-07 01:24	In fact, the issue was recently fixed in FFmpeg, so in svn rev. 5946, Kdenlive now sets the log file name to the name of the rendered file + ".log", so that simultaneous encoding will now work (This requires a recent FFmpeg)

Issue History
Date Modified	Username	Field	Change
2011-09-30 09:37	Snild	New Issue
2011-10-07 00:10	j-b-m	Note Added: 0007412
2011-10-07 00:10	j-b-m	Assigned To	=> j-b-m
2011-10-07 00:10	j-b-m	Status	new => acknowledged
2011-10-07 01:24	j-b-m	Note Added: 0007413
2011-10-07 01:24	j-b-m	Status	acknowledged => resolved
2011-10-07 01:24	j-b-m	Fixed in Version	=> 0.8.2
2011-10-07 01:24	j-b-m	Resolution	open => fixed
2011-11-01 18:56	j-b-m	Status	resolved => closed