Issue 141 in ffmbc: Encoding FLAC to 6-channel AAC/MP4 crashes with segmentation fault

[ff...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 141 by k...@vizrt.com: Encoding FLAC to 6-channel AAC/MP4 crashes
with segmentation fault
http://code.google.com/p/ffmbc/issues/detail?id=141

What steps will reproduce the problem?
1. I attempt to convert FLAC input files to a AAC in an MP4 stream. I use
six input files in order to make a six-channel output file. This crashes
with a Segmentation fault. If I try fewer than six channels, the output
proceeds as expected. (Possibly there's something fishy in the last input
file - ED-CM-5.1-DVD-LFE.flac.)

What is the expected output? What do you see instead?
I expected to receive an MP4 output file, but I get a Segmentation fault
instead.

What version of the product are you using? On what operating system?
FFmbc version 0.7-rc8
Ubunto 10.04 LTS

Please provide any additional information below:

- Full commandline run (with -v 3) and everything the program printed
without
the repeating parts.

ffmbc -v 3 -i ED-CM-5.1-DVD-C.flac -i ED-CM-5.1-DVD-L.flac -i
ED-CM-5.1-DVD-R.flac -i ED-CM-5.1-DVD-LS.flac -i ED-CM-5.1-DVD-RS.flac -i
ED-CM-5.1-DVD-LFE.flac -strict experimental -acodec aac foo.mp4
-map_audio_channel 0:0:0:0:0:0 -map_audio_channel 1:0:0:0:0:1
-map_audio_channel 2:0:0:0:0:2 -map_audio_channel 3:0:0:0:0:3
-map_audio_channel 4:0:0:0:0:4 -map_audio_channel 5:0:0:0:0:5
FFmbc version 0.7-rc8
Copyright (c) 2008-2013 Baptiste Coudurier and the FFmpeg developers
Input #0, flac, from 'ED-CM-5.1-DVD-C.flac':
Duration: 00:10:58.08, bitrate: 629 kb/s
Stream #0.0(und): Audio: flac, 48000 Hz, mono, s32
Input #1, flac, from 'ED-CM-5.1-DVD-L.flac':
Duration: 00:10:58.08, bitrate: 711 kb/s
Stream #1.0(und): Audio: flac, 48000 Hz, mono, s32
Input #2, flac, from 'ED-CM-5.1-DVD-R.flac':
Duration: 00:10:58.08, bitrate: 708 kb/s
Stream #2.0(und): Audio: flac, 48000 Hz, mono, s32
Input #3, flac, from 'ED-CM-5.1-DVD-LS.flac':
Duration: 00:10:58.08, bitrate: 497 kb/s
Stream #3.0(und): Audio: flac, 48000 Hz, mono, s32
Input #4, flac, from 'ED-CM-5.1-DVD-RS.flac':
Duration: 00:10:58.08, bitrate: 490 kb/s
Stream #4.0(und): Audio: flac, 48000 Hz, mono, s32
Input #5, flac, from 'ED-CM-5.1-DVD-LFE.flac':
Duration: 00:10:58.08, bitrate: 159 kb/s
Stream #5.0(und): Audio: flac, 48000 Hz, mono, s32
Incompatible sample format 's32' for codec 'aac', auto-selecting
format 's16'
Output #0, mp4, to 'foo.mp4':
Metadata:
encoder: FFmbc 0.7
Stream #0.0(und): Audio: aac, 48000 Hz, 6 channels, s16, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0 [channel: 0 -> 0]
Stream #1.0 -> #0.0 [channel: 0 -> 1]
Stream #2.0 -> #0.0 [channel: 0 -> 2]
Stream #3.0 -> #0.0 [channel: 0 -> 3]
Stream #4.0 -> #0.0 [channel: 0 -> 4]
Stream #5.0 -> #0.0 [channel: 0 -> 5]
Press [q] to stop, [?] for help
Segmentation fault

- Upload your sample somewhere and supply url
Source files at http://media.xiph.org/ED/


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[ff...@googlecode.com]

Updates:
Status: Accepted

Comment #1 on issue 141 by baptiste...@gmail.com: Encoding FLAC to

6-channel AAC/MP4 crashes with segmentation fault
http://code.google.com/p/ffmbc/issues/detail?id=141

Humm yes, it's probably related to encoding 6 channels.
Let me investigate

[ff...@googlecode.com]

Updates:
Status: CannotFix

Comment #2 on issue 141 by baptiste...@gmail.com: Encoding FLAC to

6-channel AAC/MP4 crashes with segmentation fault

https://code.google.com/p/ffmbc/issues/detail?id=141

I'll only enable mono or stereo encoding for now