Trouble converting audio in .flv to .mp4 conversion

[dmcmillen]

I am running 2.0.2 under 64 bit win 7. I believe this problem started when I upgraded to 2.0.1. Anytime I convert a .flv to .mp4 (H.264+AAC) VLC gives "Streaming / Transcoding failed:
VLC could not open the encoder." Video is converted ok but no audio. I installed the K-Lite 64 bit pack and configured but makes no difference, so problem appears to be in VLC.

Anyone have a fix or suggestion for this. Thanks. David

[Lotesdelere]

I can't reproduce the issue, it's working fine for me with VLC 2.0.2

Please open Tools -> Messages (set Verbosity to 2) before you start the conversion and then paste the full resulting log here or on Pastebin.com if it's too long.

[ChrisT1981]

Hi I have the same problem when converting wmv videos to mp4 videos using a profile that uses H264 and AAC.
Running VLC 2.0.2 under Windows 7 64 bit. I've updated from 2.0.0 I think, which did the job just fine.


I think these are the important lines from the message output at verbosity 2:

Code: Select all

stream_out_transcode debug: creating audio transcoding from fcc=`WMA2' to fcc=`mp4a' main debug: looking for decoder module: 31 candidates avcodec debug: libavcodec already initialized avcodec debug: ffmpeg codec (Windows Media Audio 2) started avcodec debug: Using 192000 bytes output buffer main debug: using decoder module "avcodec" main debug: TIMER module_need() : 1.549 ms - Total 1.549 ms / 1 intvls (Avg 1.549 ms) main debug: looking for encoder module: 13 candidates avcodec debug: libavcodec already initialized avcodec error: cannot open encoder main debug: no encoder module matching "any" could be loaded main debug: TIMER module_need() : 3.248 ms - Total 3.248 ms / 1 intvls (Avg 3.248 ms) stream_out_transcode error: cannot find audio encoder (module:any fourcc:mp4a). Take a look few lines earlier to see possible reason. main debug: removing module "avcodec" avcodec debug: ffmpeg codec (Windows Media Audio 2) stopped stream_out_transcode error: cannot create audio chain main error: cannot create packetizer output (WMA2)

Here is the full message output (filpaths anonymised) with verbosity 2:

Code: Select all

qt4 debug: MRL passed to the Sout: file:///Path/To/Video/Video.wmv qt4 warning: Transcode MRL: sout=#transcode{vcodec=h264,vb=800,scale=1,width=800,height=480,acodec=mp4a,ab=128,channels=2,samplerate=44100}:std{access=file,mux=mp4,dst='Path/To/Video/Converted/Video/Converted Video.wmv'} qt4 debug: Adding option: file-caching=300 qt4 debug: Adding option: sout=#transcode{vcodec=h264,vb=800,scale=1,width=800,height=480,acodec=mp4a,ab=128,channels=2,samplerate=44100}:std{access=fi le,mux=mp4,dst='Path/To/Video/Converted/Video/Converted Video.wmv'} main debug: adding item `Streaming' ( file:///Path/To/Video/Video.wmv ) qt4 debug: Adding a new MRL to recent ones: file:///Path/To/Video/Video.wmv main debug: rebuilding array of current - root Wiedergabeliste main debug: rebuild done - 1 items, index -1 main debug: processing request item: Streaming, node: null, skip: 0 main debug: resyncing on Streaming main debug: Streaming is at 0 main debug: starting playback of the new playlist item main debug: resyncing on Streaming main debug: Streaming is at 0 main debug: creating new input thread main debug: Creating an input for 'Streaming' main debug: Creating an input for 'Streaming' main debug: using sout chain=`transcode{vcodec=h264,vb=800,scale=1,width=800,height=480,acodec=mp4a,ab=128,channels=2,samplerate=44100}:std{access=file,mux=mp4,dst='Path/To/Video/Converted/Video/Converted Video.wmv'}' main debug: stream=`std' main debug: looking for sout stream module: 1 candidate main debug: set config option: sout-standard-access to file main debug: set config option: sout-standard-mux to mp4 main debug: set config option: sout-standard-dst to Path/To/Video/Converted/Video/Converted Video.wmv main debug: looking for sout access module: 1 candidate access_output_file debug: file access output opened (Path/To/Video/Converted/Video/Converted Video.wmv) main debug: using sout access module "access_output_file" main debug: TIMER module_need() : 3.188 ms - Total 3.188 ms / 1 intvls (Avg 3.188 ms) main debug: looking for sout mux module: 1 candidate mux_mp4 debug: Mp4 muxer opened main debug: no fetch required for (null) (art currently (null)) main debug: using sout mux module "mux_mp4" main debug: TIMER module_need() : 0.478 ms - Total 0.478 ms / 1 intvls (Avg 0.478 ms) stream_out_standard debug: using `file/mp4://Path/To/Video/Converted/Video/Converted Video.wmv' main debug: using sout stream module "stream_out_standard" main debug: TIMER module_need() : 4.406 ms - Total 4.406 ms / 1 intvls (Avg 4.406 ms) main debug: stream=`transcode' main debug: looking for sout stream module: 1 candidate main debug: set config option: sout-transcode-vcodec to h264 main debug: set config option: sout-transcode-vb to 800 main debug: set config option: sout-transcode-scale to 1 main debug: set config option: sout-transcode-width to 800 main debug: set config option: sout-transcode-height to 480 main debug: set config option: sout-transcode-acodec to mp4a main debug: set config option: sout-transcode-ab to 128 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=mp4a 44100Hz 2 channels 128Kb/s stream_out_transcode debug: codec video=h264 800x480 scaling: 1.000000 800kb/s main debug: using sout stream module "stream_out_transcode" main debug: TIMER module_need() : 1.093 ms - Total 1.093 ms / 1 intvls (Avg 1.093 ms) main debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Chris\AppData\Local\Temp' main debug: `file:///Path/To/Video/Video.wmv' gives access `file' demux `' path `/Path/To/Video/Video.wmv' main debug: creating demux: access='file' demux='' location='/Path/To/Video/Video.wmv' file='Path/To/Video/Video.wmv' main debug: looking for access_demux module: 3 candidates main debug: no access_demux module matching "file" could be loaded main debug: TIMER module_need() : 0.645 ms - Total 0.645 ms / 1 intvls (Avg 0.645 ms) main debug: creating access 'file' location='/Path/To/Video/Video.wmv', path='Path/To/Video/Video.wmv' main debug: looking for access module: 3 candidates filesystem debug: opening file `Path/To/Video/Video.wmv' main debug: using access module "filesystem" main debug: TIMER module_need() : 0.624 ms - Total 0.624 ms / 1 intvls (Avg 0.624 ms) main debug: Using stream method for AStream* main debug: starting pre-buffering main debug: received first data after 0 ms main debug: pre-buffering done 1024 bytes in 0s - 16666 KiB/s main debug: looking for stream_filter module: 4 candidates main debug: no stream_filter module matching "any" could be loaded main debug: TIMER module_need() : 0.252 ms - Total 0.252 ms / 1 intvls (Avg 0.252 ms) main debug: looking for stream_filter module: 1 candidate main debug: using stream_filter module "stream_filter_record" main debug: TIMER module_need() : 0.244 ms - Total 0.244 ms / 1 intvls (Avg 0.244 ms) main debug: creating demux: access='file' demux='' location='/Path/To/Video/Video.wmv' file='Path/To/Video/Video.wmv' main debug: looking for demux module: 55 candidates asf debug: found object guid: 0x75b22630-0x668e-0x11cf-0xa6d900aa0062ce6c size:5265 asf debug: read "header object" subobj:7, reserved1:1, reserved2:2 asf debug: found object guid: 0x8cabdca1-0xa947-0x11cf-0x8ee400c00c205365 size:104 asf debug: read "file properties object" file_id:0x4bb7a440-0x7baa-0x4a7b-0xb799bdcabc113fa2 file_size:781735573 creation_date:129857334009450000 data_packets_count:87363 play_duration:10111200000 send_duration:10102250000 preroll:5000 flags:2 min_data_packet_size:8948 max_data_packet_size:8948 max_bitrate:6235698 asf debug: found object guid: 0x5fbf03b5-0xa92e-0x11cf-0x8ee300c00c205365 size:4421 asf debug: read "header extension object" reserved1:0xabd3d211-0xa9ba-0x11cf-0x8ee600c00c205365 reserved2:6 header_extension_size:4375 asf debug: found object guid: 0x7c4346a9-0xefe0-0x4bfc-0xb229393ede415c85 size:39 asf debug: read "language list object" 1 entries asf debug: - 'en-ca' asf debug: found object guid: 0x26f18b5d-0x4584-0x47ec-0x9f5f0e651f0452c9 size:26 asf warning: unknown asf object (not loaded) asf debug: found object guid: 0xc5f8cbea-0x5baf-0x4877-0x8467aa8c44fa4cca size:224 asf debug: read "metadata object" 4 entries asf debug: - IsVBR=0 asf debug: - DeviceConformanceTemplate=MP@HL asf debug: - IsVBR=0 asf debug: - DeviceConformanceTemplate=L3 asf debug: found object guid: 0x1806d474-0xcadf-0x4509-0xa4ba9aabcb96aae8 size:3850 asf warning: unknown asf object (not loaded) asf debug: found object guid: 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a size:110 asf debug: read "extended stream properties object": asf debug: - start=0 end=0 asf debug: - data bitrate=6000000 buffer=5000 initial fullness=0 asf debug: - alternate data bitrate=6000000 buffer=5000 initial fullness=0 asf debug: - maximum object size=142785 asf debug: - flags=0x2 asf debug: - stream number=1 language=0 asf debug: - average time per frame=417188 asf debug: - stream name count=0 asf debug: - payload extension system count=1 asf debug: found object guid: 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a size:88 asf debug: read "extended stream properties object": asf debug: - start=0 end=0 asf debug: - data bitrate=192016 buffer=1579 initial fullness=0 asf debug: - alternate data bitrate=192016 buffer=1579 initial fullness=0 asf debug: - maximum object size=8917 asf debug: - flags=0x2 asf debug: - stream number=2 language=0 asf debug: - average time per frame=3692294 asf debug: - stream name count=0 asf debug: - payload extension system count=0 asf debug: found object guid: 0xd9aade20-0x7c17-0x4f9c-0xbc288555dd98e2a2 size:38 asf warning: unknown asf object (not loaded) asf debug: found object guid: 0xd2d0a440-0xe307-0x11d2-0x97f000a0c95ea850 size:168 asf debug: read "extended content description object" asf debug: - 'WMFSDKVersion' = '12.0.7601.17514' asf debug: - 'WMFSDKNeeded' = '0.0.0.0000' asf debug: - 'IsVBR' = 'false' asf debug: found object guid: 0x86d15240-0x311d-0x11d0-0xa3a400a0c90348f6 size:256 asf debug: read "codec list object" reserved_guid:0x86d15241-0x311d-0x11d0-0xa3a400a0c90348f6 codec_entries_count:2 asf debug: - codec[0] video name:"Windows Media Video 9" description:"Professional" information_length:4 asf debug: - codec[1] audio name:"Windows Media Audio 9.2" description:"192 kbps, 44 kHz, stereo 1-pass CBR" information_length:2 asf debug: found object guid: 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 size:134 asf debug: read "stream Properties object" stream_type:0xbc19efc0-0x5b4d-0x11cf-0xa8fd00805f5c442b error_correction_type:0x20fb5700-0x5b55-0x11cf-0xa8fd00805f5c442b time_offset:0 type_specific_data_length:56 error_correction_data_length:0 flags:0x1 stream_number:1 asf debug: found object guid: 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 size:114 asf debug: read "stream Properties object" stream_type:0xf8699e40-0x5b4d-0x11cf-0xa8fd00805f5c442b error_correction_type:0xbfc3cd50-0x618f-0x11cf-0x8bb200aa00b4e220 time_offset:0 type_specific_data_length:28 error_correction_data_length:8 flags:0x2 stream_number:2 asf debug: found object guid: 0x7bf875ce-0x468d-0x11d1-0x8d82006097c9a2b2 size:38 asf debug: read "stream bitrate properties object" asf debug: - stream=1 bitrate=6035001 asf debug: - stream=2 bitrate=200697 asf debug: found object guid: 0x75b22636-0x668e-0x11cf-0xa6d900aa0062ce6c size:781724174 asf debug: read "data object" file_id:0x4bb7a440-0x7baa-0x4a7b-0xb799bdcabc113fa2 total data packet:87363 reserved:257 asf debug: found object guid: 0x33000890-0xe5b1-0x11cf-0x89f400a0c90349cb size:6134 asf debug: read "index object" file_id:0x4bb7a440-0x7baa-0x4a7b-0xb799bdcabc113fa2 index_entry_time_interval:10000000 max_packet_count:17 index_entry_count:1013 asf debug: + 'Unknown' GUID 0x0-0x0-0x0-0x0000000000000000 size:0pos:0 asf debug: + 'Header' GUID 0x75b22630-0x668e-0x11cf-0xa6d900aa0062ce6c size:5265pos:0 asf debug: | + 'File Properties' GUID 0x8cabdca1-0xa947-0x11cf-0x8ee400c00c205365 size:104pos:30 asf debug: | + 'Header Extension' GUID 0x5fbf03b5-0xa92e-0x11cf-0x8ee300c00c205365 size:4421pos:134 asf debug: | | + 'Language List' GUID 0x7c4346a9-0xefe0-0x4bfc-0xb229393ede415c85 size:39pos:180 asf debug: | | + 'Unknown' GUID 0x26f18b5d-0x4584-0x47ec-0x9f5f0e651f0452c9 size:26pos:219 asf debug: | | + 'Metadata' GUID 0xc5f8cbea-0x5baf-0x4877-0x8467aa8c44fa4cca size:224pos:245 asf debug: | | + 'Padding' GUID 0x1806d474-0xcadf-0x4509-0xa4ba9aabcb96aae8 size:3850pos:469 asf debug: | | + 'Extended Stream Properties' GUID 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a size:110pos:4319 asf debug: | | + 'Extended Stream Properties' GUID 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a size:88pos:4429 asf debug: | | + 'Unknown' GUID 0xd9aade20-0x7c17-0x4f9c-0xbc288555dd98e2a2 size:38pos:4517 asf debug: | + 'Extended content description' GUID 0xd2d0a440-0xe307-0x11d2-0x97f000a0c95ea850 size:168pos:4555 asf debug: | + 'Codec List' GUID 0x86d15240-0x311d-0x11d0-0xa3a400a0c90348f6 size:256pos:4723 asf debug: | + 'Stream Properties' GUID 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 size:134pos:4979 asf debug: | + 'Stream Properties' GUID 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 size:114pos:5113 asf debug: | + 'Stream Bitrate Properties' GUID 0x7bf875ce-0x468d-0x11d1-0x8d82006097c9a2b2 size:38pos:5227 asf debug: + 'Data' GUID 0x75b22636-0x668e-0x11cf-0xa6d900aa0062ce6c size:781724174pos:5265 asf debug: + 'Simple Index' GUID 0x33000890-0xe5b1-0x11cf-0x89f400a0c90349cb size:6134pos:781729439 asf debug: found 2 streams asf debug: added new video stream(ID:1) main debug: selecting program id=0 asf debug: added new audio stream(codec:0x161,ID:2) main debug: using demux module "asf" main debug: TIMER module_need() : 4.840 ms - Total 4.840 ms / 1 intvls (Avg 4.840 ms) main debug: looking for a subtitle file in Path\To\Video\ main debug: looking for packetizer module: 21 candidates main debug: using packetizer module "packetizer_copy" main debug: TIMER module_need() : 0.275 ms - Total 0.275 ms / 1 intvls (Avg 0.275 ms) main debug: looking for packetizer module: 21 candidates main debug: using packetizer module "packetizer_copy" main debug: TIMER module_need() : 0.325 ms - Total 0.325 ms / 1 intvls (Avg 0.325 ms) main debug: starting in sync mode main debug: looking for meta reader module: 2 candidates lua debug: Trying Lua scripts in C:\Users\Chris\AppData\Roaming\vlc\lua\meta\reader lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader\filename.luac main debug: no meta reader module matching "any" could be loaded main debug: TIMER module_need() : 1.809 ms - Total 1.809 ms / 1 intvls (Avg 1.809 ms) main debug: `file:///Path/To/Video/Video.wmv' successfully opened main debug: Buffering 0% main debug: switching to async mode main debug: Buffering 13% main debug: adding a new sout input (sout_input:1209aee0) stream_out_transcode debug: creating video transcoding from fcc=`WMV3' to fcc=`h264' main debug: Buffering 27% main debug: Buffering 27% main debug: looking for decoder module: 31 candidates main debug: Buffering 41% main debug: Buffering 55% avcodec debug: libavcodec already initialized main debug: Buffering 69% avcodec debug: trying to use direct rendering avcodec debug: allowing 4 thread(s) for decoding avcodec debug: ffmpeg codec (Windows Media Video 9) started main debug: using decoder module "avcodec" main debug: Buffering 83% main debug: TIMER module_need() : 1.395 ms - Total 1.395 ms / 1 intvls (Avg 1.395 ms) main debug: looking for encoder module: 13 candidates x264 debug: version x264 0.125.X main debug: Buffering 97% main debug: Stream buffering done (333 ms in 2 ms) qt4 debug: IM: Setting an input main debug: using encoder module "x264" main debug: TIMER module_need() : 10.506 ms - Total 10.506 ms / 1 intvls (Avg 10.506 ms) main debug: removing module "x264" x264 debug: framecount still in libx264 buffer: 0 main debug: Decoder buffering done in 11 ms avcodec debug: using direct rendering stream_out_transcode debug: decoder aspect is 1.777778:1 stream_out_transcode debug: source pixel aspect is 1.000000:1 stream_out_transcode debug: scaled pixel aspect is 1.066667:1 stream_out_transcode debug: source 1280x720, destination 800x480 stream_out_transcode debug: encoder aspect is 12800:7200 main debug: looking for video filter2 module: 18 candidates swscale debug: 1280x720 chroma: I420 -> 800x480 chroma: I420 with scaling using Bicubic (good quality) main debug: using video filter2 module "swscale" main debug: TIMER module_need() : 2.435 ms - Total 2.435 ms / 1 intvls (Avg 2.435 ms) main debug: Filter 'Swscale' (0508ff68) appended to chain stream_out_transcode debug: destination (after video filters) 800x480 main debug: looking for encoder module: 13 candidates x264 debug: version x264 0.125.X main debug: using encoder module "x264" main debug: TIMER module_need() : 6.810 ms - Total 6.810 ms / 1 intvls (Avg 6.810 ms) main debug: adding a new input mux_mp4 debug: adding input main debug: adding a new sout input (sout_input:021de768) stream_out_transcode debug: creating audio transcoding from fcc=`WMA2' to fcc=`mp4a' main debug: looking for decoder module: 31 candidates avcodec debug: libavcodec already initialized avcodec debug: ffmpeg codec (Windows Media Audio 2) started avcodec debug: Using 192000 bytes output buffer main debug: using decoder module "avcodec" main debug: TIMER module_need() : 1.549 ms - Total 1.549 ms / 1 intvls (Avg 1.549 ms) main debug: looking for encoder module: 13 candidates avcodec debug: libavcodec already initialized avcodec error: cannot open encoder main debug: no encoder module matching "any" could be loaded main debug: TIMER module_need() : 3.248 ms - Total 3.248 ms / 1 intvls (Avg 3.248 ms) stream_out_transcode error: cannot find audio encoder (module:any fourcc:mp4a). Take a look few lines earlier to see possible reason. main debug: removing module "avcodec" avcodec debug: ffmpeg codec (Windows Media Audio 2) stopped stream_out_transcode error: cannot create audio chain main error: cannot create packetizer output (WMA2) main debug: incoming request - stopping current input main debug: dying input main debug: control: stopping input main debug: dying input main debug: removing module "packetizer_copy" main debug: killing decoder fourcc `WMV3', 0 PES in FIFO main debug: removing a sout input (sout_input:1209aee0) main debug: TIMER encoding video frame : 0.003 ms - Total 9776.188 ms / 4707 intvls (Avg 2.077 ms) main debug: removing module "avcodec" avcodec debug: ffmpeg codec (Windows Media Video 9) stopped main debug: removing module "x264" x264 debug: framecount still in libx264 buffer: 0 main debug: Filter 0508ff68 removed from chain main debug: removing module "swscale" mux_mp4 debug: removing input main warning: no more input streams for this mux main debug: removing module "packetizer_copy" main debug: killing decoder fourcc `WMA2', 0 PES in FIFO main debug: removing module "asf" asf debug: free asf object 0x8cabdca1-0xa947-0x11cf-0x8ee400c00c205365 asf debug: free asf object 0x7c4346a9-0xefe0-0x4bfc-0xb229393ede415c85 asf warning: unknown asf object 0x26f18b5d-0x4584-0x47ec-0x9f5f0e651f0452c9 asf debug: free asf object 0xc5f8cbea-0x5baf-0x4877-0x8467aa8c44fa4cca asf warning: unknown asf object 0x1806d474-0xcadf-0x4509-0xa4ba9aabcb96aae8 asf debug: free asf object 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a asf debug: free asf object 0x14e6a5cb-0xc672-0x4332-0x8399a96952065b5a asf warning: unknown asf object 0xd9aade20-0x7c17-0x4f9c-0xbc288555dd98e2a2 asf debug: free asf object 0x5fbf03b5-0xa92e-0x11cf-0x8ee300c00c205365 asf debug: free asf object 0xd2d0a440-0xe307-0x11d2-0x97f000a0c95ea850 asf debug: free asf object 0x86d15240-0x311d-0x11d0-0xa3a400a0c90348f6 asf debug: free asf object 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 asf debug: free asf object 0xb7dc0791-0xa9b7-0x11cf-0x8ee600c00c205365 asf debug: free asf object 0x7bf875ce-0x468d-0x11d1-0x8d82006097c9a2b2 asf debug: free asf object 0x75b22630-0x668e-0x11cf-0xa6d900aa0062ce6c asf debug: free asf object 0x75b22636-0x668e-0x11cf-0xa6d900aa0062ce6c asf debug: free asf object 0x33000890-0xe5b1-0x11cf-0x89f400a0c90349cb main debug: Program doesn't contain anymore ES main debug: removing module "stream_filter_record" main debug: removing module "filesystem" main debug: dead input main debug: destroying useless sout main debug: destroying chain... (name=transcode) main debug: removing module "stream_out_transcode" main debug: destroying chain done main debug: destroying chain... (name=std) main debug: removing module "stream_out_standard" main debug: removing module "mux_mp4" mux_mp4 debug: Close mux_mp4 debug: movie duration 194s mux_mp4 debug: created 1 chunks (stco) main debug: removing module "access_output_file" access_output_file debug: file access output closed main debug: destroying chain done qt4 debug: IM: Deleting the input main debug: TIMER input launching for 'Streaming' : 18.627 ms - Total 18.627 ms / 1 intvls (Avg 18.627 ms)

[Philstix]

I can confirm this problem when trying to convert an mpg to mp4 (h.264 +aac) on Windows 7 x64 using VLC 2.0.2 with the same errors as mentioned by previous posts.

I tested with both the installed and portable x32 versions, and the x64 portable version, and it failed with the same error each time.

What works:

• - convert to h.264 + aac on Xubuntu 12.04 using VLC 2.0.1 Linux build.
  
  - convert to h.264 + mp3 on Windows 7 x64 using VLC 2.0.2 x32 Windows build.
  
  - convert to h.264 + aac on Windows 7 x64 using VLC 1.1.9 Windows build.

This seems to indicate that the problem is in the AAC codec handling of the Windows build of VLC 2.x.

[ChrisT1981]

Does anyone have any idea what to do?

[dmcmillen]

I copy ChrisT1981: Is there a work around or a VLC fix coming?

[ChrisT1981]

Just tested it in VLC 2.0.3 works like a charm again.

[Jean-Baptiste Kempf]

Just tested it in VLC 2.0.3 works like a charm again.

Thanks for the report.

[gary.gilbreath]

My test setup was a little different, but the solution was the same. I wanted to transcode a file from MP3 to AAC with an RTSP stream output. If I chose "Audio - AAC (MP4)" for the transcoding option using 2.0.8 the stream would never start, it says "VLC could not open the encoder". However, if I used the exact same setup using 2.0.3 it works fine.

The generated output stream is:
:sout=#transcode{vcodec=none,acodec=mp4a,ab=128,channels=2,samplerate=44100}:rtp{sdp=rtsp://:8554/audio} :sout-keep

The relevant output from the Messages dialog for 2.0.8 is:

stream_out_transcode debug: creating audio transcoding from fcc=`mpga' to fcc=`mp4a'
main debug: looking for decoder module: 32 candidates
main debug: using decoder module "mpeg_audio"
main debug: TIMER module_need() : 0.639 ms - Total 0.639 ms / 1 intvls (Avg 0.639 ms)
main debug: looking for encoder module: 13 candidates
avcodec debug: libavcodec already initialized
avcodec error: cannot open encoder
main debug: no encoder module matching "any" could be loaded
main debug: TIMER module_need() : 6.165 ms - Total 6.165 ms / 1 intvls (Avg 6.165 ms)
stream_out_transcode error: cannot find audio encoder (module:any fourcc:mp4a). Take a look few lines earlier to see possible reason.

For 2.0.3 the only difference in the Messages output is:

main debug: looking for encoder module: 13 candidates
avcodec debug: libavcodec already initialized
avcodec debug: found encoder MPEG AAC Audio
main debug: using encoder module "avcodec"

Again, this works fine with 2.0.3, but doesn't with 2.0.8. I have not tried to determine with which version it became broken.

I just tried it with 2.1.0-rc1 and it behaves the same as 2.0.8.