Major problem with VLC playing MXF OP1a 29.97 video

[lasvideo]

I am a 30 year veteran editor as well as a beta tester for Adobe / AJA and Boris FX.

Many folks have recently switched to PCs after Apple killed FCP 7. This means Prores and Quicktime related processes are not ideal due to the bottleneck created by qt32server in editing and related software.

Heres the problem.

I am mastering now in MXF OP1a AVC-I 100. I have done lots of projects in 23.976 FPS which play back fine in VLC.

Many Distributors require the NTSC format to be 29.97 FPS.

When VLC trys to play these MXF OP1a AVC -I 100 at 29.97 THE AUDIO PLAYS AT DOUBLE TIME. I have many other editors reporting this same behavior.

Thousands of editors are switching to PC workflows and currently OP1a is the most desirable non Quicktime codec. But VLC is the only media player that will display it, and right now it has dysfunctional playback of 29.97 files.

Please help us fix this.

[lasvideo]

Just let me know how and I will post a 29.97 NTSC selection so you can see (and hear) this problem.

[Jean-Baptiste Kempf]

Please share the file.

[lasvideo]

You did not tell me how I attach a video file so I can share it with you. I do not see any way to do so.

[Jean-Baptiste Kempf]

http://streams.videolan.org/upload/

[lasvideo]

Thank you. The files and related info have been uploaded.

[lasvideo]

Any feedback on this problem?

[lasvideo]

I sure would appreciate just a little update on this topic. You did receive the file I uploaded at your request I hope. Is a fix possible and when might it be completed? Thank you.

[Jean-Baptiste Kempf]

Problem is known and understood (wrong samplerate) and might be fixed in a later release

[lasvideo]

Thanks! I certainly hope it will be fixed since there are lots of professional editors relying on VLC to play their MXF OP1a files. There is no alternative player.

[lasvideo]

I have had several folks ask me if this bug has been fixed so I am here see if there is apositive answer to that question.

[Jean-Baptiste Kempf]

So far, nothing.

[lasvideo]

Bummer

[rghurst]

I see this topic hasn't been posted to in quite a while, but I just started using MXF in my workflow, and I seem to have the same problem. I am rendering MXF from Sony Vegas Pro 12 using Sony's HD422 codec at 1920x1080 29.97 FPS.

Video plays fine, but audio is double-time. Only place I can "play" the MXF is inside Vegas Pro, which is better than nothing, but makes the file a bit hard to share

Any update on this issue would be appreciated. THANKS!

[Jean-Baptiste Kempf]

The issue is known, and we know why, but noone has time to fix properly.

[Speed400]

Hi!

I work with MXF files and I use VLC. I get VLC since the first versions and I dont know why VLC don't read audio in MXF files.

I say that because one version read the MXF files, including audio, perfectly.

This version is 1.1.11

So if the creators analyze this version may be the solution is there...

I Hope this information helps a little.

(Sorry my english).

[Jean-Baptiste Kempf]

Use 2.1.0-rc2

[Speed400]

I tryed v2.1.0 RC2 and still no audio playback in MXF files.

By the way, at video playback (MXF files) appears with a black line in the top of the vídeo like the black bars of wide format at 4:3
Also the counter doesn't work with MXF files, there is no progression slide.

However this is a great media player and developers are doing a great job.

Hope can fix this issues with MXF files.

[Jean-Baptiste Kempf]

I tryed v2.1.0 RC2 and still no audio playback in MXF files.

What sample?

[Speed400]

I try 2 diferent MXF clips and none of them playout audio.

I can send you a sample of one MXF.

How can I send it to you?
Can I upload here ?

http://streams.videolan.org/upload/

[Jean-Baptiste Kempf]

http://streams.videolan.org/upload/

[Lotesdelere]

I can send you a sample of one MXF.

Is your file "MXF SAMPLE for VLC.mxf" ?
If so then I have no problem so far playing it with VLC 2.1.0-rc2.

[Speed400]

Yes, thats the file I sent.

I still have no audio playback with mxf files.

If you listen áudio from MXF with this rc2 version, why I do not?
What possible to be wrong?

[Lotesdelere]

What possible to be wrong?

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


Try another audio output module:
http://wiki.videolan.org/WindowsFAQ-2.0 ... _anomalies

And/or some other audio options:
viewtopic.php?p=339577#p339577

And finally you can try VLC 2.1.0-rc2.

[Speed400]

Log display this:

main debug: adding item `MXF SAMPLE for VLC.mxf' ( file:///E:/MXF%20SAMPLE%20for%20VLC.mxf )
main debug: processing request item: MXF SAMPLE for VLC.mxf, node: null, skip: 0
main debug: rebuilding array of current - root Lista de reprodução
main debug: rebuild done - 1 items, index 0
main debug: starting playback of the new playlist item
main debug: resyncing on MXF SAMPLE for VLC.mxf
main debug: MXF SAMPLE for VLC.mxf is at 0
main debug: creating new input thread
main debug: Creating an input for 'MXF SAMPLE for VLC.mxf'
main debug: Creating an input for 'MXF SAMPLE for VLC.mxf'
qt4 debug: Adding a new MRL to recent ones: file:///E:/MXF%20SAMPLE%20for%20VLC.mxf
main debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Speed400\AppData\Local\Temp'
main debug: `file:///E:/MXF%20SAMPLE%20for%20VLC.mxf' gives access `file' demux `' path `/E:/MXF%20SAMPLE%20for%20VLC.mxf'
main debug: creating demux: access='file' demux='' location='/E:/MXF%20SAMPLE%20for%20VLC.mxf' file='E:\MXF SAMPLE for VLC.mxf'
main debug: looking for access_demux module matching "file": 12 candidates
main debug: no access_demux modules matched
main debug: creating access 'file' location='/E:/MXF%20SAMPLE%20for%20VLC.mxf', path='E:\MXF SAMPLE for VLC.mxf'
main debug: looking for access module matching "file": 20 candidates
filesystem debug: opening file `E:\MXF SAMPLE for VLC.mxf'
main debug: using access module "filesystem"
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 - 1000000 KiB/s
main debug: looking for stream_filter module matching "any": 6 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_filter module matching "stream_filter_record": 6 candidates
main debug: no stream_filter modules matched
main debug: creating demux: access='file' demux='' location='/E:/MXF%20SAMPLE%20for%20VLC.mxf' file='E:\MXF SAMPLE for VLC.mxf'
main debug: looking for demux module matching "any": 63 candidates
qt4 debug: IM: Setting an input
mod debug: MOD validation failed (ext=mxf)
ts debug: TS module discarded (lost sync)
avcodec debug: trying url: E:\MXF SAMPLE for VLC.mxf
avcodec debug: detected format: mxf
main debug: selecting program id=0
avcodec debug: adding es: video codec = mpgv (2)
avcodec debug: adding es: audio codec = s16l (65536)
avcodec debug: AVFormat supported stream
avcodec debug: - format = mxf (MXF (Material eXchange Format))
avcodec debug: - start time = 0
avcodec debug: - duration = 33360000
main debug: using demux module "avcodec"
main debug: looking for a subtitle file in E:\
main debug: looking for decoder module matching "any": 39 candidates
avcodec debug: trying to use direct rendering
avcodec debug: allowing 3 thread(s) for decoding
main debug: no fetch required for (null) (art currently (null))
avcodec debug: avcodec codec (MPEG-1/2 Video) started
avcodec debug: using slice thread mode with 3 threads
main debug: using decoder module "avcodec"
main debug: looking for decoder module matching "any": 39 candidates
araw debug: samplerate:48000Hz channels:8 bits/sample:16
main debug: using decoder module "araw"
main debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\Speed400\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 modules matched
main debug: `file:///E:/VEGAS/MXF%20SAMPLE%20for%20VLC.mxf' successfully opened