The VideoLAN Forums

Posted: **16 Apr 2008 04:12**

Hey all,

I'm having an issue converting a file. I've got a Matroshka video file that plays fine in VLC but I can't transcode it to MP4 for my Xbox 360. When I start the encode, I get this error:

Code: Select all

ffmpeg: cannot open encoder
stream_out_transcode: cannot find encoder ((null))

I set encapsulation method to mpeg 4, video to mp4v 2048k, audio to mp4a 128k 2 channels. This is on a fresh install of VLC 0.8.6f on Mac OSX 10.4.11. I have screenshots available if anyone would need to see them.

Does anyone have any ideas?

Posted: **16 Apr 2008 07:19**

More details!!!

What are the complete messages?

Posted: **16 Apr 2008 08:17**

Hi, thanks for the reply. Here's what I got from the messages window:

Code: Select all

main debug: CPU has capabilities 486 586 MMX MMXEXT SSE SSE2 FPU 
main debug: looking for memcpy module: 3 candidates
main debug: using memcpy module "memcpymmxext"
main debug: waiting for thread completion
main debug: thread 42913792 (playlist) created at priority -47 (playlist/playlist.c:184)
main debug: waiting for thread completion
main debug: thread 42906624 (preparser) created at priority -47 (playlist/playlist.c:210)
main debug: looking for interface module: 1 candidate
main debug: using interface module "hotkeys"
main debug: thread 42153984 (interface) created at priority -47 (interface/interface.c:198)
main debug: looking for interface module: 3 candidates
main debug: using interface module "macosx"
main debug: thread 42051072 (manage) created at priority -47 (interface/interface.c:164)
main debug: adding playlist item `mymovie.mkv' ( file:///Users/nick/Movies/mymovie.mkv )
main debug: creating new input thread
main debug: waiting for thread completion
main debug: thread 43450880 (input) created at priority 37 (input/input.c:265)
main debug: creating statistics handler
main debug: stream=`transcode'
main debug: looking for sout stream module: 1 candidate
main debug: stream=`std'
main debug: looking for sout stream module: 1 candidate
main debug: set sout option: sout-standard-access to file
main debug: set sout option: sout-standard-mux to mp4
main debug: set sout option: sout-standard-dst to /Users/nick/Desktop/vlc-output.mp4
stream_out_standard debug: creating `file/mp4:///Users/nick/Desktop/vlc-output.mp4'
stream_out_standard debug: extension is mp4
stream_out_standard debug: extension -> mux=mp4
stream_out_standard debug: using `file/mp4:///Users/nick/Desktop/vlc-output.mp4'
main debug: looking for sout access module: 1 candidate
access_output_file debug: file access output opened (`/Users/nick/Desktop/vlc-output.mp4')
main debug: using sout access module "access_output_file"
stream_out_standard debug: access opened
main debug: looking for sout mux module: 1 candidate
macosx debug: input has changed, refreshing interface
mux_mp4 debug: Mp4 muxer opened
main debug: using sout mux module "mux_mp4"
stream_out_standard debug: mux opened
main debug: using sout stream module "stream_out_standard"
main debug: set sout option: sout-transcode-vcodec to mp4v
main debug: set sout option: sout-transcode-vb to 2048
main debug: set sout option: sout-transcode-scale to 1
main debug: set sout option: sout-transcode-acodec to mp4a
main debug: set sout option: sout-transcode-ab to 128
main debug: set sout option: sout-transcode-channels to 2
stream_out_transcode debug: codec audio=mp4a 0Hz 2 channels 128Kb/s
stream_out_transcode debug: codec video=mp4v 0x0 scaling: 1.000000 2048kb/s
main debug: using sout stream module "stream_out_transcode"
main debug: `file:///Users/nick/Movies/mymovie.mkv' gives access `file' demux `' path `/Users/nick/Movies/mymovie.mkv'
main debug: creating demux: access='file' demux='' path='/Users/nick/Movies/mymovie.mkv'
main debug: looking for access_demux module: 0 candidates
main warning: no access_demux module matched "file"
main debug: creating access 'file' path='/Users/nick/Movies/mymovie.mkv'
main debug: looking for access2 module: 6 candidates
access_file debug: opening file `/Users/nick/Movies/mymovie.mkv'
main debug: using access2 module "access_file"
main debug: pre-buffering...
main debug: received first data for our buffer
main debug: pre-buffering done 1408981 bytes in 0s - 26871 kbytes/s
main debug: creating demux: access='file' demux='' path='/Users/nick/Movies/mymovie.mkv'
main debug: looking for demux2 module: 44 candidates
mkv debug: |   + Seek head
mkv debug: |   |   |   = cues at 1152953284
mkv debug: |   + Unknown (N7libebml8EbmlVoidE)
mkv debug: |   + Information
mkv debug: |   |   + TimecodeScale=1000000
mkv debug: |   |   + Muxing Application=libebml v0.7.8 + libmatroska v0.8.1
mkv debug: |   |   + Writing Application=mkvmerge v1.7.0 ('What Do You Take Me For') built on Mar  9 2008 14:06:58
mkv debug: |   |   + Duration=2578304
mkv debug: |   |   + Unknown (N11libmatroska10KaxDateUTCE)
mkv debug: |   |   + UID=1549682026
mkv debug: |   + Tracks
mkv debug: |   |   + Track Entry
mkv debug: |   |   |   + Track Number=1
mkv debug: |   |   |   + Track UID=1
mkv debug: |   |   |   + Track Type=video
mkv debug: |   |   |   + Unknown (N11libmatroska19KaxTrackFlagEnabledE)
mkv debug: |   |   |   + Track Default=1
mkv debug: |   |   |   + Unknown (N11libmatroska18KaxTrackFlagForcedE)
mkv debug: |   |   |   + Track Lacing=0
mkv debug: |   |   |   + Track MinCache=1
mkv debug: |   |   |   + Track TimeCodeScale=1.000000
mkv debug: |   |   |   + Unknown (N11libmatroska21KaxMaxBlockAdditionIDE)
mkv debug: |   |   |   + Track CodecId=V_MPEG4/ISO/AVC
mkv debug: |   |   |   + Unknown (N11libmatroska17KaxCodecDecodeAllE)
mkv debug: |   |   |   + Track CodecPrivate size=39
mkv debug: |   |   |   + Track Default Duration=41708332
mkv debug: |   |   |   + Track Language=`eng'
mkv debug: |   |   |   + Track Video
mkv debug: |   |   |   |   + width=1280
mkv debug: |   |   |   |   + height=720
mkv debug: |   |   |   |   + Unknown (N11libmatroska22KaxVideoFlagInterlacedE)
mkv debug: |   |   |   |   + display width=16
mkv debug: |   |   |   |   + display height=9
mkv debug: |   |   + Track Entry
mkv debug: |   |   |   + Track Number=2
mkv debug: |   |   |   + Track UID=3219776757
mkv debug: |   |   |   + Track Type=audio
mkv debug: |   |   |   + Unknown (N11libmatroska19KaxTrackFlagEnabledE)
mkv debug: |   |   |   + Track Default=1
mkv debug: |   |   |   + Unknown (N11libmatroska18KaxTrackFlagForcedE)
mkv debug: |   |   |   + Track Lacing=1
mkv debug: |   |   |   + Track MinCache=0
mkv debug: |   |   |   + Track TimeCodeScale=1.000000
mkv debug: |   |   |   + Unknown (N11libmatroska21KaxMaxBlockAdditionIDE)
mkv debug: |   |   |   + Track CodecId=A_AC3
mkv debug: |   |   |   + Unknown (N11libmatroska17KaxCodecDecodeAllE)
mkv debug: |   |   |   + Track Default Duration=32000000
mkv debug: |   |   |   + Track Language=`und'
mkv debug: |   |   |   + Track Audio
mkv debug: |   |   |   |   + afreq=48000
mkv debug: |   |   |   |   + achan=6
mkv debug: |   + Unknown (N7libebml8EbmlVoidE)
mkv debug: |   + Cluster
mkv warning: cannot find any cluster, damaged file ?
mkv debug: loading cues
mkv debug: loading cues done.
mkv debug: found 2 es
main debug: selecting program id=0
mkv debug: Starting the UI Hook
main debug: thread 44169728 (mkv event thread handler) created at priority -47 (mkv.cpp:2523)
main debug: using demux2 module "mkv"
main debug: looking for a subtitle file in /Users/nick/Movies/
main debug: looking for packetizer module: 17 candidates
packetizer_h264 debug: found NAL_SPS
packetizer_h264 debug: found NAL_PPS
packetizer_h264 debug: avcC length size=4, sps=1, pps=1
main debug: using packetizer module "packetizer_h264"
main debug: stream out mode -> no decoder thread
main debug: looking for packetizer module: 17 candidates
main debug: using packetizer module "a52"
main debug: stream out mode -> no decoder thread
main debug: starting in async mode
main debug: `file:///Users/nick/Movies/mymovie.mkv' successfully opened
main debug: adding a new input
stream_out_transcode debug: creating video transcoding from fcc=`h264' to fcc=`mp4v'
main debug: looking for decoder module: 25 candidates
ffmpeg debug: libavcodec initialized (interface 3349504 )
ffmpeg debug: postprocessing disabled
ffmpeg debug: ffmpeg codec (h264) started
main debug: using decoder module "ffmpeg"
main debug: looking for encoder module: 8 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: found encoder MPEG-4 Video
main debug: using encoder module "ffmpeg"
main debug: removing module "ffmpeg"
main warning: trying to send non-dated packet to stream output!
stream_out_transcode debug: decoder aspect is 768000:432000
stream_out_transcode debug: source pixel aspect is 1.000000:1
stream_out_transcode debug: scaled pixel aspect is 1.000000:1
stream_out_transcode debug: source 1280x720, crop 1280x720, destination 1280x720, padding 1280x720
stream_out_transcode debug: encoder aspect is 768000:432000
main debug: looking for encoder module: 8 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg warning: timebase not supported by mpeg 4 standard
 (mpeg4@0x2a3be10)
ffmpeg error: cannot open encoder
stream_out_transcode error: cannot find encoder ((null))
ffmpeg debug: ffmpeg codec (h264) stopped
main debug: removing module "ffmpeg"
a52: A/52 channels:6 samplerate:48000 bitrate:384000
main debug: adding a new input
stream_out_transcode debug: creating audio transcoding from fcc=`a52 ' to fcc=`mp4a'
main debug: looking for decoder module: 25 candidates
main debug: using decoder module "a52"
main debug: looking for encoder module: 8 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: found encoder MPEG AAC Audio
main debug: using encoder module "ffmpeg"
main debug: looking for audio filter2 module: 5 candidates
main debug: using audio filter2 module "a52tofloat32"
main debug: looking for audio filter2 module: 5 candidates
audio_format debug: fl32->s16l, bits per sample: 32
main debug: using audio filter2 module "audio_format"
main debug: adding a new input
mux_mp4 debug: adding input
a52: A/52 channels:6 samplerate:48000 bitrate:384000

If you need the CrashLog I can zip it up and post it somewhere as well. Thanks for your help!

Posted: **16 Apr 2008 17:01**

Use MpegStreamClip:

http://www.squared5.com/

Posted: **19 Apr 2008 03:20**

Johansyd,

Thanks for the input. I tried MpegStreamClip and it doesn't recognize the input format. It won't open the .mkv file.

Does anyone have any other ideas? I tried doing the same thing in both Windows and Linux but I either get an audio-only file or I get nothing. Not even an error message.

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