VideoLAN needs your help

[yoann]

There are many things that we would like to improve in VLC, but that we don't, because we simply don't have enough time. That's why we are currently looking for some help.
We have identified several small projects that prospective developers could work on. Knowledge of C and/or C++ programming will certainly be useful, but you don't need to be an expert, nor a video expert. Existing VLC developers will be able to help you on these projects.
You can find the list and some instructions at http://wiki.videolan.org/Mini_Projects.
Don't hesitate to join us on IRC on the mailing-lists.
We are waiting for you!

[aliamiri]

it seems that the correct link is

http://wiki.videolan.org/Mini_Projects

[Arite]

Cheers, link updated.

Arite.

[freescv]

I thought auto resizing as an option in the preferences would be nice. Always on default would be good but a button to disable it if causing problems.

The aspect ratio is what I'm talking aboot. I liked 16:10 but the default one doesn't know the black sides aren't what im looking for.

ya it's the best media player I've EVER used (real player, bs player, quick time player, windows media player 6.4 /w kazaa lite codec pack, although decent, and the junk players in dvd's)

auto aspect ratio would be an EXCELLENT feature to your already HUGE "to do" list.


enjoy the work load, I'm too dumb to build it myself else I'd help.

all the best this winter VLC developers and grateful users,


Trevor

[m4paul]

Howdo I post an oom bug on vlc on the forum? I dont see a "create post" or something like button anywhere...?

The last line here "killed" is the oom killing it after playing the stream ended normally but caused vlc to go use all memory.

$ vlc rtsp://streams.vpro.nl/pac02/3542787/16_1.ra
VLC media player 1.0.6 Goldeneye
[0x8841228] live555 demux: real codec detected, using real-RTSP instead
[0x8841228] live555 demux error: Nothing to play for rtsp://streams.vpro.nl/pac02/3542787/16_1.ra
[0x8847bf0] a52 decoder: A/52 channels:1 samplerate:11025 bitrate:16000
[0x88446f0] pulse audio output: No. of Audio Channels: 1
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::begin: Paint device returned engine == 0, type: 1
Killed


dmesg output:

[40869.253062] chromium-browse invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0
[40869.253074] chromium-browse cpuset=/ mems_allowed=0
[40869.253083] Pid: 28063, comm: chromium-browse Not tainted 2.6.32-22-generic #33-Ubuntu
[40869.253089] Call Trace:
[40869.253106] [<c01cc814>] oom_kill_process+0xa4/0x2b0
[40869.253116] [<c01cce89>] ? select_bad_process+0xa9/0xe0
[40869.253125] [<c01ccf11>] __out_of_memory+0x51/0xa0
[40869.253134] [<c01ccfb8>] out_of_memory+0x58/0xb0
[40869.253143] [<c01cf7c7>] __alloc_pages_slowpath+0x407/0x4a0
[40869.253154] [<c01cf99a>] __alloc_pages_nodemask+0x13a/0x170
[40869.253165] [<c01d1fda>] __do_page_cache_readahead+0xea/0x200
[40869.253175] [<c01d2116>] ra_submit+0x26/0x30
[40869.253183] [<c01cc10c>] filemap_fault+0x3dc/0x410
[40869.253193] [<c01e4650>] __do_fault+0x40/0x490
[40869.253229] [<f8083e9b>] ? ahci_interrupt+0x9b/0x100 [ahci]
[40869.253239] [<c01e6259>] handle_mm_fault+0x139/0x390
[40869.253251] [<c058dacd>] do_page_fault+0x10d/0x3a0
[40869.253260] [<c0353189>] ? copy_to_user+0x39/0x130
[40869.253269] [<c058d9c0>] ? do_page_fault+0x0/0x3a0
[40869.253278] [<c058b9c3>] error_code+0x73/0x80
[40869.253283] Mem-Info:
[40869.253288] DMA per-cpu:
[40869.253294] CPU 0: hi: 0, btch: 1 usd: 0
[40869.253300] CPU 1: hi: 0, btch: 1 usd: 0
[40869.253304] Normal per-cpu:
[40869.253310] CPU 0: hi: 186, btch: 31 usd: 113
[40869.253316] CPU 1: hi: 186, btch: 31 usd: 120
[40869.253321] HighMem per-cpu:
[40869.253326] CPU 0: hi: 42, btch: 7 usd: 8
[40869.253332] CPU 1: hi: 42, btch: 7 usd: 13
[40869.253343] active_anon:194065 inactive_anon:44148 isolated_anon:0
[40869.253346] active_file:311 inactive_file:382 isolated_file:0
[40869.253349] unevictable:0 dirty:0 writeback:0 unstable:0
[40869.253351] free:2998 slab_reclaimable:1670 slab_unreclaimable:3262
[40869.253354] mapped:5006 shmem:27555 pagetables:1683 bounce:0
[40869.253369] DMA free:4020kB min:64kB low:80kB high:96kB active_anon:3100kB inactive_anon:1412kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15852kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:4kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? yes
[40869.253381] lowmem_reserve[]: 0 865 991 991
[40869.253403] Normal free:7776kB min:3728kB low:4660kB high:5592kB active_anon:712380kB inactive_anon:114180kB active_file:584kB inactive_file:764kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:885944kB mlocked:0kB dirty:0kB writeback:0kB mapped:15448kB shmem:85652kB slab_reclaimable:6680kB slab_unreclaimable:13040kB kernel_stack:2352kB pagetables:4720kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:1024 all_unreclaimable? no
[40869.253417] lowmem_reserve[]: 0 0 1013 1013
[40869.253438] HighMem free:196kB min:128kB low:264kB high:400kB active_anon:60780kB inactive_anon:61000kB active_file:660kB inactive_file:764kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:129736kB mlocked:0kB dirty:0kB writeback:0kB mapped:4576kB shmem:24568kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:2008kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:672 all_unreclaimable? no
[40869.253451] lowmem_reserve[]: 0 0 0 0
[40869.253462] DMA: 3*4kB 1*8kB 0*16kB 1*32kB 0*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 4020kB
[40869.253492] Normal: 338*4kB 457*8kB 149*16kB 0*32kB 2*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 7776kB
[40869.253520] HighMem: 19*4kB 3*8kB 0*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 196kB
[40869.253548] 28281 total pagecache pages
[40869.253553] 0 pages in swap cache
[40869.253558] Swap cache stats: add 0, delete 0, find 0/0
[40869.253562] Free swap = 0kB
[40869.253566] Total swap = 0kB
[40869.258651] 260016 pages RAM
[40869.258656] 32690 pages HighMem
[40869.258660] 5494 pages reserved
[40869.258664] 25921 pages shared
[40869.258668] 236158 pages non-shared
[40869.258676] Out of memory: kill process 22510 (chromium-browse) score 80015360 or a child
[40869.258684] Killed process 22510 (chromium-browse)
[40870.960382] vlc invoked oom-killer: gfp_mask=0x280da, order=0, oom_adj=0
[40870.960393] vlc cpuset=/ mems_allowed=0
[40870.960403] Pid: 8358, comm: vlc Not tainted 2.6.32-22-generic #33-Ubuntu
[40870.960408] Call Trace:
[40870.960426] [<c01cc814>] oom_kill_process+0xa4/0x2b0
[40870.960436] [<c01cce89>] ? select_bad_process+0xa9/0xe0
[40870.960445] [<c01ccf11>] __out_of_memory+0x51/0xa0
[40870.960454] [<c01ccfb8>] out_of_memory+0x58/0xb0
[40870.960463] [<c01cf7c7>] __alloc_pages_slowpath+0x407/0x4a0
[40870.960473] [<c01cf99a>] __alloc_pages_nodemask+0x13a/0x170
[40870.960483] [<c01e29b0>] do_anonymous_page+0x100/0x270
[40870.960493] [<c01304cc>] ? kmap_atomic_prot+0x4c/0xf0
[40870.960502] [<c01e6458>] handle_mm_fault+0x338/0x390
[40870.960514] [<c058dacd>] do_page_fault+0x10d/0x3a0
[40870.960523] [<c0353189>] ? copy_to_user+0x39/0x130
[40870.960532] [<c058d9c0>] ? do_page_fault+0x0/0x3a0
[40870.960541] [<c058b9c3>] error_code+0x73/0x80
[40870.960547] Mem-Info:
[40870.960552] DMA per-cpu:
[40870.960558] CPU 0: hi: 0, btch: 1 usd: 0
[40870.960564] CPU 1: hi: 0, btch: 1 usd: 0
[40870.960569] Normal per-cpu:
[40870.960574] CPU 0: hi: 186, btch: 31 usd: 57
[40870.960580] CPU 1: hi: 186, btch: 31 usd: 144
[40870.960585] HighMem per-cpu:
[40870.960590] CPU 0: hi: 42, btch: 7 usd: 6
[40870.960596] CPU 1: hi: 42, btch: 7 usd: 37
[40870.960607] active_anon:194160 inactive_anon:44276 isolated_anon:0
[40870.960610] active_file:242 inactive_file:304 isolated_file:0
[40870.960613] unevictable:0 dirty:0 writeback:0 unstable:0
[40870.960615] free:2952 slab_reclaimable:1667 slab_unreclaimable:3258
[40870.960618] mapped:4932 shmem:27555 pagetables:1652 bounce:0
[40870.960633] DMA free:4020kB min:64kB low:80kB high:96kB active_anon:2972kB inactive_anon:1540kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15852kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:4kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:64 all_unreclaimable? yes
[40870.960645] lowmem_reserve[]: 0 865 991 991
[40870.960667] Normal free:7676kB min:3728kB low:4660kB high:5592kB active_anon:712688kB inactive_anon:114308kB active_file:432kB inactive_file:644kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:885944kB mlocked:0kB dirty:0kB writeback:0kB mapped:15296kB shmem:85652kB slab_reclaimable:6668kB slab_unreclaimable:13024kB kernel_stack:2328kB pagetables:4620kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:928 all_unreclaimable? no
[40870.960681] lowmem_reserve[]: 0 0 1013 1013
[40870.960702] HighMem free:112kB min:128kB low:264kB high:400kB active_anon:60980kB inactive_anon:61256kB active_file:536kB inactive_file:572kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:129736kB mlocked:0kB dirty:0kB writeback:0kB mapped:4432kB shmem:24568kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:1984kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:448 all_unreclaimable? no
[40870.960716] lowmem_reserve[]: 0 0 0 0
[40870.960727] DMA: 3*4kB 1*8kB 0*16kB 1*32kB 0*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 0*4096kB = 4020kB
[40870.960756] Normal: 425*4kB 531*8kB 82*16kB 1*32kB 2*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 7676kB
[40870.960784] HighMem: 4*4kB 2*8kB 1*16kB 0*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 112kB
[40870.960812] 28155 total pagecache pages
[40870.960817] 0 pages in swap cache
[40870.960822] Swap cache stats: add 0, delete 0, find 0/0
[40870.960826] Free swap = 0kB
[40870.960830] Total swap = 0kB
[40870.966282] 260016 pages RAM
[40870.966288] 32690 pages HighMem
[40870.966293] 5494 pages reserved
[40870.966297] 24604 pages shared
[40870.966302] 236273 pages non-shared
[40870.966310] Out of memory: kill process 7246 (bash) score 2400824 or a child
[40870.966319] Killed process 8341 (vlc)

$ vlc --version
VLC media player 1.0.6 Goldeneye
VLC version 1.0.6 Goldeneye
Compiled by buildd@vernadsky.buildd
Compiler: gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)

$ dpkg -l|grep vlc
rc libvlc0 0.8.6.release.e+x264svn20071224+faad2.6.1-0ubuntu3.2 multimedia player and streamer library
ii libvlc2 1.0.6-1ubuntu1 multimedia player and streamer library
rc libvlccore0 0.9.9a-2ubuntu2~ppajaunty1 base library for VLC and its modules
ii libvlccore2 1.0.6-1ubuntu1 base library for VLC and its modules
ii mozilla-plugin-vlc 1.0.6-1ubuntu1 multimedia plugin for web browsers based on
ii vlc 1.0.6-1ubuntu1 multimedia player and streamer
ii vlc-data 1.0.6-1ubuntu1 Common data for VLC
ii vlc-nox 1.0.6-1ubuntu1 multimedia player and streamer (without X su
ii vlc-plugin-ggi 1.0.6-1ubuntu1 GGI video output plugin for VLC
ii vlc-plugin-pulse 1.0.6-1ubuntu1 PulseAudio plugin for VLC
ii vlc-plugin-sdl 1.0.6-1ubuntu1 SDL video and audio output plugin for VLC
$ uname -a
Linux host 2.6.32-22-generic #33-Ubuntu SMP Wed Apr 28 13:27:30 UTC 2010 i686 GNU/Linux

[Jean-Baptiste Kempf]

File a bug on trac.videolan.org

[BZLederman]

If VideoLAN needs our support, then I think it's only fitting that we get your support.

I see several open topics (including, I must state, one in which I have a current interest) where users are asking what I see as perfectly reasonable questions; and we are NOT getting any sort of response from the people who know how VLC works.

So, I will ask the generalized question: for any topic, for any question, what do we, the users, need to do to get an answer from the people who have the answers?

[Jean-Baptiste Kempf]

There is a lack of people who have answers, or build the knowledge to have answers.