Missing audio on some AVI files

[robertin75]

Hello:

I have some AVI files in which not only the audio is missing on several parts of the video but I get other problems like low volume on several parts of the file. Tried to play the file on another PC and the audio runs just fine (no mute and no volume problems).

I tried VLC LAN, Windows Media Player and Winamp and all of them show the audio problem.

Reinstalling the audio drivers had no effect.

Also when I stream them on my ipod touch I don't get this problem but I can only hear on the right side of my headphones.

Anyone knows what may be happening? Maybe a codec problem?

Please finde the screenshot of this file using GSPot



Thanks

[robertin75]

Installed DivX an XVid codecs and still the same problem

[Jean-Baptiste Kempf]

Share the file.

[robertin75]

It's 814 MB

[VLC_help]

Does it help if you remux the file?

[robertin75]

How do I do that? On the VLC LAN player?

Thanks

[robertin75]

You meant demux, right?

By the way I converted the file to other formats like mpeg, mp4 and still the same problem.

[robertin75]

Ok this is getting really weird.

I converted the AVI to MP4 using [some] Video Converter and transferred it to my ipod touch and the sound is not gone in parts but the problem is that I can only hear the right audio channel.

[Lotesdelere]

It's 814 MB

Please, cut a short sample of this file, 10 MB should be enough, and upload it to some file sharing site like Rapidshare or Megaupload.

Use DGsplit and read here about how to do it:
viewtopic.php?f=14&t=57724&p=193335#p193335

[robertin75]

Ok, here's the file:

http://www.megaupload.com/?d=CMT5XUDR

It's 19 MB.

This is what happens on my PC:

Almost immediately (2 seconds after) when the video starts, the volume goes really down, like 80%.
From minute 1:22 to 2:02 (the end of the video) the audio is totaly gone.

Thanks and hope we can figure out what is happening because it's so strange.

[robertin75]

I forgot to add that whenever there is audio it's always on the right channel. Left channel has no sound

[Steupz]

Plays perfectly on my system, Robertini (I am using last night's build)

[robertin75]

Any ideas on what's wrong on my side?

Thanks

[Steupz]

I couldn't say at all, but it's not the file.
Have you used Tools --- Message --- verbosity =2 to ascertain what goes wrong at 1:22?

Because I was waiting with great anticipation for the audio to cut off and it never did, lol. I also didn't get that drop at the beginning.

I will say however that I too have a piece of video I recorded with VLC that has audio skips on my system, yet when I uploaded it to youtube, it played perfectly. So maybe some systems have issues with playback. But it isn't the file.

[robertin75]

No I have never used the Message option.

Makes me think it's the audio hardware as I had never seen something like this before. Nothing really makes any sense.

[Steupz]

Well try the message option. Just run the video, open tools/message, change the verbosity to 2... save the info you get and post it here.

I'm sure someone more intelligent than I will be able to decipher the cause.

[robertin75]

Ok I ran the video for 2 minutes and this is the messages.txt file contents:

----------------------------------------------------------------------------------------------------------------------------------

main debug: incoming request - stopping current input
main debug: control type=0
main debug: control: stopping input
main debug: dying input
main debug: dying input
main debug: thread times: real 0m30.948770s, kernel 0m0.031200s, user 0m1.045206s
avcodec debug: ffmpeg codec (MPEG-4 Video) stopped
main debug: removing module "avcodec"
main debug: killing decoder fourcc `mp4v', 0 PES in FIFO
main debug: [0] 2 0
main debug: [1] 2 0
main debug: [2] 2 0
main debug: [3] 2 0
main debug: [4] 2 0
main debug: [5] 2 0
main debug: [6] 2 0
main debug: [7] 2 0
main debug: [8] 2 0
main debug: [9] 2 0
main debug: [10] 2 0
main debug: [11] 2 0
main debug: [12] 2 0
main debug: [13] 2 0
main debug: [14] 2 0
main debug: [15] 4 0
main debug: [16] 4 0
main debug: [17] 4 0
main debug: [18] 4 0
main debug: [19] 4 0
main debug: [20] 4 0
main debug: [21] 4 0
main debug: [22] 4 0
main debug: [23] 4 0
main debug: saving a free vout
main debug: thread times: real 0m30.898767s, kernel 0m0.000000s, user 0m0.452402s
main debug: removing module "mpeg_audio"
main debug: killing decoder fourcc `mpga', 0 PES in FIFO
main debug: removing module "mpgatofixed32"
main debug: removing module "scaletempo"
main debug: removing module "bandlimited_resampler"
aout_directx debug: closing audio device
aout_directx debug: DirectSoundThread exiting
main debug: thread ended
main debug: thread times: real 0m30.518745s, kernel 0m0.000000s, user 0m0.000000s
main debug: removing module "aout_directx"
main debug: removing module "audio_format"
main debug: removing module "float32_mixer"
main debug: releasing aout
avi debug: free chunk avih
avi debug: free chunk strh
avi debug: free chunk strf
avi debug: free chunk JUNK
avi debug: free chunk LIST
avi debug: free chunk strh
avi debug: free chunk strf
avi debug: free chunk JUNK
avi debug: free chunk LIST
avi debug: free chunk JUNK
avi debug: free chunk LIST
avi debug: free chunk LIST
avi debug: free chunk idx1
avi debug: free chunk RIFF
avi debug: free chunk LIST
main debug: removing module "avi"
main debug: removing module "stream_filter_record"
main debug: removing module "filesystem"
main debug: Program doesn't contain anymore ES
main debug: thread ended
main debug: dead input
main debug: thread times: real 1m41.986833s, kernel 0m17.362911s, user 0m2.652017s
main debug: destroying useless vout
direct3d debug: Direct3D scene released successfully
direct3d debug: DirectXEventThread terminating
direct3d debug: DirectXCloseWindow
direct3d debug: WinProc WM_DESTROY
qt4 debug: releasing video...
qt4 debug: IM: Deleting the input
qt4 debug: Video is not needed anymore
main debug: removing module "qt4"
main debug: removing module "direct3d"
main debug: removing module "vout_wrapper"
main debug: removing module "blend"
main debug: removing module "freetype"
main debug: removing module "yuvp"
main debug: removing module "swscale"
main debug: processing request item 2.avi node Playlist skip 0
main debug: resyncing on 2.avi
main debug: 2.avi is at 0
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for '2.avi'
main debug: thread started
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path 'C:\Users\ROBERT~1\AppData\Local\Temp'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:214)
main debug: `file:///E:/Rober/Body%20Building/Videos/Eric%20Cressey/Building%20the%20efficient%20athlete%20Pete/2.avi' gives access `file' demux `' path `E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\2.avi'
main debug: creating demux: access='file' demux='' path='E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\2.avi'
main debug: looking for access_demux module: 2 candidates
main debug: no access_demux module matching "file" could be loaded
main debug: TIMER module_need() : 1.000 ms - Total 1.000 ms / 1 intvls (Avg 1.000 ms)
main debug: creating access 'file' path='E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\2.avi'
main debug: looking for access module: 2 candidates
filesystem debug: opening file `E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\2.avi'
main debug: using access module "filesystem"
main debug: TIMER module_need() : 1.000 ms - Total 1.000 ms / 1 intvls (Avg 1.000 ms)
main debug: Using AStream*Stream
main debug: pre buffering
main debug: received first data after 8 ms
main debug: pre-buffering done 1024 bytes in 0s - 124 KiB/s
main debug: looking for stream_filter module: 2 candidates
main debug: no stream_filter module matching "any" could be loaded
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: looking for stream_filter module: 1 candidate
main debug: using stream_filter module "stream_filter_record"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating demux: access='file' demux='' path='E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\2.avi'
main debug: looking for demux module: 50 candidates
avi debug: found Chunk fourcc:46464952 (RIFF) size:853602206 pos:0
avi debug: found LIST chunk: 'AVI '
avi debug: <list 'AVI '>
avi debug: found Chunk fourcc:5453494c (LIST) size:8822 pos:12
avi debug: found LIST chunk: 'hdrl'
avi debug: <list 'hdrl'>
avi debug: found Chunk fourcc:68697661 (avih) size:56 pos:24
avi debug: avih: streams:2 flags: HAS_INDEX IS_INTERLEAVED TRUST_CKTYPE 720x480
avi debug: found Chunk fourcc:5453494c (LIST) size:4240 pos:88
avi debug: found LIST chunk: 'strl'
avi debug: <list 'strl'>
avi debug: found Chunk fourcc:68727473 (strh) size:56 pos:100
avi debug: strh: type:vids handler:0x58564944 samplesize:1036800 29.97fps
avi debug: found Chunk fourcc:66727473 (strf) size:40 pos:164
avi debug: strf: video:DIVX 720x480 planes:1 24bpp
avi debug: found Chunk fourcc:4b4e554a (JUNK) size:4116 pos:212
avi debug: </list 'strl'>
avi debug: found Chunk fourcc:5453494c (LIST) size:4230 pos:4336
avi debug: found LIST chunk: 'strl'
avi debug: <list 'strl'>
avi debug: found Chunk fourcc:68727473 (strh) size:56 pos:4348
avi debug: strh: type:auds handler:0x00000001 samplesize:1 16000.00fps
avi debug: found Chunk fourcc:66727473 (strf) size:30 pos:4412
avi debug: strf: audio:0x0055 channels:2 48000Hz 0bits/sample 125kb/s
avi debug: found Chunk fourcc:4b4e554a (JUNK) size:4116 pos:4450
avi debug: </list 'strl'>
avi debug: found Chunk fourcc:4b4e554a (JUNK) size:260 pos:8574
avi debug: </list 'hdrl'>
avi debug: found Chunk fourcc:5453494c (LIST) size:847761308 pos:8842
avi debug: skipping movi chunk
avi debug: found Chunk fourcc:31786469 (idx1) size:5832048 pos:847770158
qt4 debug: IM: Setting an input
avi debug: idx1: index entry:364503
avi debug: </list 'AVI '>
avi debug: * LIST-root size:853602214 pos:0
avi debug: + RIFF-AVI size:853602206 pos:0
avi debug: | + LIST-hdrl size:8822 pos:12
avi debug: | | + avih size:56 pos:24
avi debug: | | + LIST-strl size:4240 pos:88
avi debug: | | | + strh size:56 pos:100
avi debug: | | | + strf size:40 pos:164
avi debug: | | | + JUNK size:4116 pos:212
avi debug: | | + LIST-strl size:4230 pos:4336
avi debug: | | | + strh size:56 pos:4348
avi debug: | | | + strf size:30 pos:4412
avi debug: | | | + JUNK size:4116 pos:4450
avi debug: | | + JUNK size:260 pos:8574
avi debug: | + LIST-movi size:847761308 pos:8842
avi debug: | + idx1 size:5832048 pos:847770158
avi debug: AVIH: 2 stream, flags HAS_INDEX IS_INTERLEAVED TRUST_CKTYPE
avi debug: stream[0] rate:30000 scale:1001 samplesize:0
avi debug: stream[0] video(DIVX) 720x480 24bpp 29.970030fps
main debug: selecting program id=0
avi debug: stream[1] rate:16000 scale:1 samplesize:1
avi debug: stream[1] audio(0x55) 2 channels 48000Hz 0bits
avi debug: selected standard index for stream[0]
avi debug: selected standard index for stream[1]
avi debug: stream[0] created 152493 index entries
avi debug: stream[1] created 212010 index entries
avi debug: stream[0] length:5088 (based on index)
avi debug: stream[1] length:5088 (based on index)
avi warning: broken or missing index, 'seek' will be approximative or will exhibit strange behavior
main debug: using demux module "avi"
main debug: TIMER module_need() : 2966.000 ms - Total 2966.000 ms / 1 intvls (Avg 2966.000 ms)
main debug: looking for a subtitle file in E:\Rober\Body Building\Videos\Eric Cressey\Building the efficient athlete Pete\
main debug: looking for decoder module: 34 candidates
avcodec debug: libavcodec already initialized
avcodec debug: trying to use direct rendering
avcodec debug: ffmpeg codec (MPEG-4 Video) started
main debug: using decoder module "avcodec"
main debug: TIMER module_need() : 2.000 ms - Total 2.000 ms / 1 intvls (Avg 2.000 ms)
main debug: thread (decoder) created at priority 0 (../.././src/input/decoder.c:301)
main debug: thread started
main debug: looking for decoder module: 34 candidates
main debug: using decoder module "mpeg_audio"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: thread (decoder) created at priority 2 (../.././src/input/decoder.c:301)
main debug: thread started
main debug: looking for meta reader module: 2 candidates
lua debug: Trying Lua scripts in C:\Users\robertin75\AppData\Roaming\vlc\lua\meta\reader
lua debug: Trying Lua scripts in C:\Program Files\VideoLAN\VLC\lua\meta\reader
lua debug: Trying Lua playlist script C:\Program Files\VideoLAN\VLC\lua\meta\reader\filename.lua
main debug: no meta reader module matching "any" could be loaded
main debug: TIMER module_need() : 2.000 ms - Total 2.000 ms / 1 intvls (Avg 2.000 ms)
main debug: `file:///E:/Rober/Body%20Building/Videos/Eric%20Cressey/Building%20the%20efficient%20athlete%20Pete/2.avi' successfully opened
main debug: Buffering 0%
mpeg_audio debug: MPGA channels:2 samplerate:48000 bitrate:128
main debug: Buffering 8%
main debug: reusing aout
main debug: Buffering 16%
main debug: Buffering 25%
main debug: Buffering 33%
main debug: Buffering 41%
main debug: looking for audio output module: 4 candidates
aout_directx debug: Opening DirectSound Audio Output
main debug: Buffering 50%
main debug: Buffering 58%
main debug: Buffering 66%
main debug: Buffering 75%
main debug: Buffering 83%
main debug: Buffering 91%
main debug: Buffering 100%
aout_directx debug: found device: Primary Sound Driver
aout_directx debug: found device: Speakers (Realtek High Definition Audio)
main debug: Stream buffering done (325 ms in 1 ms)
main debug: no usable vout present, spawning one
main debug: looking for text renderer module: 2 candidates
freetype debug: Building font databases.
aout_directx debug: device supports 2 channels (DEFAULT!)
aout_directx debug: device supports 1 channel
aout_directx debug: Windows says your SpeakerConfig is stereo
aout_directx debug: creating DirectSoundThread
main debug: thread started
aout_directx debug: DirectSoundThread ready
main debug: thread (DirectSound Notification Thread) created at priority 15 (../../.././modules/audio_output/directx.c:321)
main debug: using audio output module "aout_directx"
main debug: TIMER module_need() : 155.000 ms - Total 155.000 ms / 1 intvls (Avg 155.000 ms)
main debug: output 's16l' 48000 Hz Stereo frame=1 samples/4 bytes
main debug: mixer 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
main debug: filter(s) 'f32l'->'s16l' 48000 Hz->48000 Hz Stereo->Stereo
main debug: looking for audio filter module: 14 candidates
audio_format debug: f32l->s16l, bits per sample: 32->16
main debug: using audio filter module "audio_format"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: found a filter for the whole conversion
main debug: looking for audio mixer module: 3 candidates
main debug: using audio mixer module "float32_mixer"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: input 'mpga' 48000 Hz Stereo frame=1152 samples/969 bytes
main debug: looking for audio filter module: 1 candidate
scaletempo debug: format: 48000 rate, 2 nch, 4 bps, fl32
scaletempo debug: params: 30 stride, 0.200 overlap, 14 search
scaletempo debug: 1.000 scale, 1440.000 stride_in, 1440 stride_out, 1152 standing, 288 overlap, 672 search, 2400 queue, fl32 mode
main debug: using audio filter module "scaletempo"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: filter(s) 'mpga'->'f32l' 48000 Hz->48000 Hz Stereo->Stereo
main debug: looking for audio filter module: 14 candidates
mpgatofixed32 debug: mpga->f32l, bits per sample: 0
main debug: using audio filter module "mpgatofixed32"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: found a filter for the whole conversion
main debug: filter(s) 'f32l'->'f32l' 52800 Hz->48000 Hz Stereo->Stereo
main debug: looking for audio filter module: 14 candidates
bandlimited_resampler debug: f32l/52800KHz/2->f32l/48000KHz/2
main debug: using audio filter module "bandlimited_resampler"
main debug: TIMER module_need() : 1.000 ms - Total 1.000 ms / 1 intvls (Avg 1.000 ms)
main debug: found a filter for the whole conversion
main debug: End of audio preroll
freetype debug: Took 149000 microseconds
freetype debug: Using Arial as font from file C:/Windows/fonts/arial.ttf
freetype debug: using fontsize: 2
main debug: using text renderer module "freetype"
main debug: TIMER module_need() : 152.000 ms - Total 152.000 ms / 1 intvls (Avg 152.000 ms)
main debug: looking for video filter2 module: 18 candidates
swscale debug: 32x32 chroma: YUVA -> 16x16 chroma: YUVA with scaling using Bicubic (good quality)
main debug: using video filter2 module "swscale"
main debug: TIMER module_need() : 2.000 ms - Total 2.000 ms / 1 intvls (Avg 2.000 ms)
main debug: looking for video filter2 module: 18 candidates
yuvp debug: YUVP to YUVA converter
main debug: using video filter2 module "yuvp"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: window size: 720x480
main debug: Deinterlacing available
main debug: deinterlace 0, mode blend, is_needed 0
main debug: looking for video output module: 1 candidate
vout_wrapper debug: Opening vout display wrapper
main debug: looking for vout display module: 8 candidates
direct3d debug: creating Vout EventThread
direct3d debug: DirectXCreateWindow
main debug: looking for vout window hwnd module: 3 candidates
qt4 debug: requesting video...
qt4 debug: Video was requested 0, 0
main debug: using vout window hwnd module "qt4"
main debug: TIMER module_need() : 130.000 ms - Total 130.000 ms / 1 intvls (Avg 130.000 ms)
direct3d debug: created video sub-window
direct3d debug: Vout EventThread running
direct3d debug: disabling screen saver
main debug: VoutDisplayEvent 'resize' 736x518 window
direct3d warning: trying surface pixel format: YV12
direct3d debug: selected surface pixel format is YV12
direct3d debug: Direct3D scene created successfully
direct3d debug: Direct3D device adapter successfully initialized
main debug: using vout display module "direct3d"
main debug: TIMER module_need() : 272.000 ms - Total 272.000 ms / 1 intvls (Avg 272.000 ms)
main debug: using video output module "vout_wrapper"
main debug: TIMER module_need() : 273.000 ms - Total 273.000 ms / 1 intvls (Avg 273.000 ms)
main debug: got 1 direct buffer(s)
main debug: pic render sz 720x480, of (0,0), vsz 720x480, 4cc I420, sar 1:1, msk r0x0 g0x0 b0x0
main debug: pic in sz 720x480, of (0,0), vsz 720x480, 4cc I420, sar 1:1, msk r0x0 g0x0 b0x0
main debug: pic out sz 720x480, of (0,0), vsz 720x480, 4cc I420, sar 1:1, msk r0x0 g0x0 b0x0
main debug: direct render, mapping render pictures 0-23 to system pictures 1-24
main debug: VoutDisplayEvent 'resize' 720x480 window
avcodec debug: using direct rendering
main debug: End of video preroll
main debug: Received first picture
freetype debug: using fontsize: 30
main debug: looking for video blending module: 1 candidate
blend debug: chroma: YUVA -> I420
main debug: using video blending module "blend"
main debug: TIMER module_need() : 1.000 ms - Total 1.000 ms / 1 intvls (Avg 1.000 ms)
main debug: Decoder buffering done in 529 ms
main warning: PTS is out of range (-10000), dropping buffer
main warning: PTS is out of range (-34000), dropping buffer
mpgatofixed32 debug: libmad error: bad main_data_begin pointer
main debug: Post-processing available
main warning: vlc_object_find_name(postproc) is not safe!
main debug: audio output is too slow (171000), trashing 50000us
main debug: audio output is too slow (121000), trashing 50000us
main debug: audio output is too slow (71000), trashing 50000us
main warning: output date isn't PTS date, requesting resampling (71000)
main warning: buffer is 71000 late, triggering upsampling
main debug: auto hidding mouse
main warning: resampling stopped after 12850000 usec (drift: 459)
main warning: late picture skipped (17034 > -10278)
main warning: late picture skipped (-5433 > -14101)
main debug: auto hidding mouse
main debug: auto hidding mouse
main debug: auto hidding mouse
main debug: auto hidding mouse
main debug: auto hidding mouse
main warning: late picture skipped (17000 > -9544)
main debug: auto hidding mouse
main warning: output date isn't PTS date, requesting resampling (41000)
main warning: buffer is 40708 late, triggering upsampling
main warning: late picture skipped (13600 > -4871)
main warning: late picture skipped (14767 > -7243)
main warning: late picture skipped (2234 > -7126)
main warning: resampling stopped after 9727000 usec (drift: 417)
main warning: late picture skipped (-5733 > -8957)
main debug: auto hidding mouse
main warning: late picture skipped (-400 > -17538)
main warning: late picture skipped (567 > -6307)
main warning: late picture skipped (6900 > -6776)
main warning: late picture skipped (-6166 > -8845)
main warning: late picture skipped (63900 > -38083)
main warning: late picture skipped (30534 > -38083)
main warning: late picture skipped (-2833 > -38083)
main warning: late picture skipped (-36200 > -38083)

----------------------------------------------------------------------------------------------------------------------------------

I don't understand a word so hopefully someone can decipher this.