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Transcoding FLAC to ALAC
Posted: 26 Sep 2009 01:06
by prefab
Hi,
I am using VLC 1.0.2 to handle radio stations not supported by iTunes.
I transcode the streams to ALAC and send them to Airport Express, this works very well.
I use this to transcode:
Code: Select all
:sout=#transcode{acodec=alac,channels=2,samplerate=44100}:raop{host=xxx.xxx.xxx.xxx,volume=80}
I came across a stream that causes VLC to crash when using this :
http://amp1.cesnet.cz:8000/cro-d-dur.flac. You can read more about this stream here:
http://www.cesnet.cz/doc/techzpravy/200 ... -encoding/
Any ideas how to workaround this ? Thanks
Re: Transcoding FLAC to ALAC
Posted: 26 Sep 2009 17:02
by Jean-Baptiste Kempf
Does it play correctly and crash only when transcoding?
Re: Transcoding FLAC to ALAC
Posted: 26 Sep 2009 17:54
by prefab
Does it play correctly and crash only when transcoding?
Yes, without transcoding the stream plays correctly (only VLC
and fb2k are able to play this stream)
But transcoding to ALAC and then outputing (file or raop) crashes VLC. I have sent an error report.
Re: Transcoding FLAC to ALAC
Posted: 27 Sep 2009 18:07
by Jean-Baptiste Kempf
Can you try to transcode to a file and not to raop, please? And give the log?
Re: Transcoding FLAC to ALAC
Posted: 27 Sep 2009 22:41
by prefab
Code: Select all
start vlc "http://amp1.cesnet.cz:8000/cro-d-dur.flac" --sout="#transcode{acodec=alac,channels=2,samplerate=44100}:std{access=file,mux=raw,dst=C:\\temp\\test.m4a}" --extraintf logger --logfile c:\temp\vlc.txt --verbose=2
LOG:
Code: Select all
-- logger module started --
main debug: using interface module "logger"
main debug: TIMER module_need() : 4.000 ms - Total 4.000 ms / 1 intvls (Avg 4.000 ms)
main debug: thread (interface) created at priority 0 (../.././src/interface/interface.c:151)
main debug: looking for interface module: 1 candidate
main debug: using interface module "hotkeys"
main debug: thread started
main debug: thread ended
main debug: TIMER module_need() : 2.000 ms - Total 2.000 ms / 1 intvls (Avg 2.000 ms)
main debug: thread (interface) created at priority 0 (../.././src/interface/interface.c:151)
main debug: adding item `http://amp1.cesnet.cz:8000/cro-d-dur.flac' ( http://amp1.cesnet.cz:8000/cro-d-dur.flac )
main debug: thread started
main debug: looking for interface module: 1 candidate
main debug: using interface module "globalhotkeys"
main debug: TIMER module_need() : 11.000 ms - Total 11.000 ms / 1 intvls (Avg 11.000 ms)
main debug: thread (interface) created at priority 0 (../.././src/interface/interface.c:151)
main: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
main debug: looking for interface module: 3 candidates
main debug: thread started
main debug: thread ended
main debug: using interface module "qt4"
qt4 debug: Error while initializing qt-specific localization
main debug: TIMER module_need() : 93.000 ms - Total 93.000 ms / 1 intvls (Avg 93.000 ms)
main debug: thread (interface) created at priority 0 (../.././src/interface/interface.c:151)
main debug: thread started
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 1 items, index -1
main debug: processing request item null node Playlist skip 0
main debug: thread ended
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for 'http://amp1.cesnet.cz:8000/cro-d-dur.flac'
main debug: thread (input) created at priority 1 (../.././src/input/input.c:230)
main debug: thread started
main debug: stream=`transcode'
qt4 debug: IM: Setting an input
main debug: looking for sout stream module: 1 candidate
main debug: stream=`std'
main debug: looking for sout stream module: 1 candidate
qt4 debug: Updating the geometry
main debug: set config option: sout-standard-access to file
qt4 debug: Updating the geometry
main debug: set config option: sout-standard-mux to raw
main debug: set config option: sout-standard-dst to C:\temp\test.m4a
stream_out_standard debug: creating `file/raw://C:\temp\test.m4a'
stream_out_standard debug: extension is m4a
stream_out_standard debug: extension -> mux=(null)
stream_out_standard debug: using `file/raw://C:\temp\test.m4a'
main debug: looking for sout access module: 1 candidate
access_output_file debug: file access output opened (C:\temp\test.m4a)
main debug: using sout access module "access_output_file"
main debug: TIMER module_need() : 8.000 ms - Total 8.000 ms / 1 intvls (Avg 8.000 ms)
stream_out_standard debug: access opened
main debug: looking for sout mux module: 1 candidate
mux_dummy debug: Dummy/Raw muxer opened
mux_dummy: Open
main debug: using sout mux module "mux_dummy"
main debug: TIMER module_need() : 8.000 ms - Total 8.000 ms / 1 intvls (Avg 8.000 ms)
main debug: muxer support adding stream at any time
main debug: muxer prefers to wait for all ES before starting to mux
stream_out_standard debug: mux opened
main debug: using sout stream module "stream_out_standard"
main debug: TIMER module_need() : 59.000 ms - Total 59.000 ms / 1 intvls (Avg 59.000 ms)
main debug: set config option: sout-transcode-acodec to alac
main debug: set config option: sout-transcode-channels to 2
main debug: set config option: sout-transcode-samplerate to 44100
stream_out_transcode debug: codec audio=alac 44100Hz 2 channels 0Kb/s
main debug: using sout stream module "stream_out_transcode"
main debug: TIMER module_need() : 88.000 ms - Total 88.000 ms / 1 intvls (Avg 88.000 ms)
main debug: using timeshift granularity of 50 MBytes
main debug: using timeshift path 'D:\DOCUME~1\Mario\LOCALS~1\Temp'
main debug: `http://amp1.cesnet.cz:8000/cro-d-dur.flac' gives access `http' demux `' path `amp1.cesnet.cz:8000/cro-d-dur.flac'
qt4 debug: New caching: 0
main debug: creating demux: access='http' demux='' path='amp1.cesnet.cz:8000/cro-d-dur.flac'
main debug: looking for access_demux module: 0 candidates
qt4 debug: New caching: 0
main debug: no access_demux module matched "http"
main debug: TIMER module_need() : 5.000 ms - Total 5.000 ms / 1 intvls (Avg 5.000 ms)
main debug: creating access 'http' path='amp1.cesnet.cz:8000/cro-d-dur.flac'
main debug: looking for access module: 2 candidates
access_http debug: http: server='amp1.cesnet.cz' port=8000 file='/cro-d-dur.flac
main debug: net: connecting to amp1.cesnet.cz port 8000
main debug: connection: Resource temporarily unavailable
main debug: connection succeeded (socket = 1256)
access_http debug: protocol 'HTTP' answer code 200
access_http debug: Content-Type: application/ogg
access_http debug: Meta-Info: icy-br: 128
access_http debug: Meta-Info: ice-audio-info: ice-samplerate=48000;ice-bitrate=128;ice-channels=2
access_http debug: Meta-Info: icy-br: 128
access_http debug: Meta-Info: icy-description: European-style cultural station
access_http debug: Icy-Genre: classical
access_http debug: Icy-Name: Cesky rozhlas D-dur
access_http debug: Meta-Info: icy-private: 1
access_http debug: Meta-Info: icy-pub: 0
access_http debug: Meta-Info: icy-url: http://www.rozhlas.cz
access_http debug: Server: Icecast 2.3.2
access_http debug: auto re-connect enabled
main debug: using access module "access_http"
main debug: TIMER module_need() : 467.000 ms - Total 467.000 ms / 1 intvls (Avg 467.000 ms)
main debug: Using AStream*Stream
main debug: pre buffering
main debug: received first data after 180 ms
main debug: pre-buffering done 151 bytes in 0s - 0 kbytes/s
main debug: looking for stream_filter module: 2 candidates
main debug: TIMER module_need() : 2.000 ms - Total 2.000 ms / 1 intvls (Avg 2.000 ms)
main debug: looking for stream_filter module: 1 candidate
main debug: using stream_filter module "stream_filter_record"
main debug: TIMER module_need() : 6.000 ms - Total 6.000 ms / 1 intvls (Avg 6.000 ms)
main debug: creating demux: access='http' demux='' path='amp1.cesnet.cz:8000/cro-d-dur.flac'
main debug: looking for demux module: 50 candidates
main debug: using demux module "ogg"
main debug: TIMER module_need() : 72.000 ms - Total 72.000 ms / 1 intvls (Avg 72.000 ms)
main debug: looking for a subtitle file in D:\Program Files\VLC\
main debug: starting in sync mode
main debug: looking for meta reader module: 1 candidate
main debug: TIMER module_need() : 3.000 ms - Total 3.000 ms / 1 intvls (Avg 3.000 ms)
main debug: `http://amp1.cesnet.cz:8000/cro-d-dur.flac' successfully opened
ogg debug: found FLAC header version 1.0 (0 header packets)
ogg debug: FLAC header, channels: 2, rate: 48000
main debug: selecting program id=0
main debug: looking for packetizer module: 21 candidates
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
main debug: using packetizer module "flac"
main debug: TIMER module_need() : 13.000 ms - Total 13.000 ms / 1 intvls (Avg 13.000 ms)
qt4 debug: Updating the geometry
main debug: thread (decoder) created at priority 2 (../.././src/input/decoder.c:315)
main debug: thread started
qt4 debug: Updating the geometry
qt4 debug: Updating the geometry
ogg debug: beginning of a group of logical streams
main error: ES_OUT_RESET_PCR called
main debug: thread times: real 0m0.015625s, kernel 0m0.000000s, user 0m0.000000s
main debug: removing module "flac"
qt4 debug: Updating the geometry
main debug: killing decoder fourcc `flac', 0 PES in FIFO
qt4 debug: Updating the geometry
main debug: looking for packetizer module: 21 candidates
main debug: using packetizer module "flac"
main debug: TIMER module_need() : 3.000 ms - Total 3.000 ms / 1 intvls (Avg 3.000 ms)
main debug: thread started
main debug: thread (decoder) created at priority 2 (../.././src/input/decoder.c:315)
ogg warning: Ogg_ExtractMeta does not support flac
main debug: switching to async mode
flac debug: decode STREAMINFO
main debug: Buffering 0%
flac debug: channels:2 samplerate:48000 bitspersamples:16
flac debug: STREAMINFO decoded
main debug: Buffering 0%
main warning: clock gap, unexpected stream discontinuity
main debug: adding a new sout input (sout_input:0x2dfde18)
stream_out_transcode debug: creating audio transcoding from fcc=`flac' to fcc=`alac'
main warning: feeding synchro with a new reference point trying to recover from clock gap
main debug: looking for decoder module: 36 candidates
main debug: Buffering 0%
qt4 debug: New caching: 7
main debug: Buffering 8%
main debug: Buffering 18%
qt4 debug: New caching: 7
main debug: using decoder module "flac"
main debug: TIMER module_need() : 13.000 ms - Total 13.000 ms / 1 intvls (Avg 13.000 ms)
main debug: Buffering 26%
qt4 debug: New caching: 25
qt4 debug: New caching: 25
main debug: Buffering 34%
main debug: looking for encoder module: 12 candidates
main debug: Buffering 42%
main debug: Buffering 50%
main debug: Buffering 57%
main debug: Buffering 68%
qt4 debug: New caching: 68
main debug: Buffering 76%
main debug: Buffering 86%
avcodec debug: libavcodec initialized (interface 0x342300)
qt4 debug: New caching: 68
qt4 debug: New caching: 86
qt4 debug: New caching: 86
avcodec debug: found encoder Apple Lossless Audio Codec
main debug: using encoder module "avcodec"
qt4 debug: New caching: 93
main debug: Buffering 94%
main debug: Stream buffering done (1224 ms in 69 ms)
main debug: TIMER module_need() : 38.000 ms - Total 38.000 ms / 1 intvls (Avg 38.000 ms)
qt4 debug: New caching: 93
qt4 debug: New caching: 100
stream_out_transcode debug: Looking for filter (fl32->s16l, channels 2->2, rate 48000->44100)
main debug: looking for audio filter2 module: 8 candidates
qt4 debug: New caching: 100
bandlimited_resampler debug: fl32/48000KHz/2->fl32/44100KHz/2
main debug: using audio filter2 module "bandlimited_resampler"
main debug: TIMER module_need() : 13.000 ms - Total 13.000 ms / 1 intvls (Avg 13.000 ms)
main debug: Filter 'bandlimited_resampler' (0x2e62d3c) appended to chain
main debug: looking for audio filter2 module: 8 candidates
audio_format debug: fl32->s16l, bits per sample: 32->16
main debug: using audio filter2 module "audio_format"
main debug: TIMER module_need() : 8.000 ms - Total 8.000 ms / 1 intvls (Avg 8.000 ms)
main debug: Filter 'audio_format' (0xe4e264) appended to chain
stream_out_transcode debug: Got complete audio filter chain
main debug: adding a new input
mux_dummy debug: adding input
main debug: Decoder buffering done in 46 ms
main warning: trying to send non-dated packet to stream output!
main warning: trying to send non-dated packet to stream output!
main warning: trying to send non-dated packet to stream output!
flac debug: decode STREAMINFO
flac debug: channels:2 samplerate:48000 bitspersamples:16
flac debug: STREAMINFO decoded
Re: Transcoding FLAC to ALAC
Posted: 28 Sep 2009 00:37
by Jean-Baptiste Kempf
and it crashes, asserts or?
Re: Transcoding FLAC to ALAC
Posted: 28 Sep 2009 07:54
by prefab
But transcoding to ALAC and then outputing (file or raop) crashes VLC