[MEncoder-users] Converting m2ts from JVC GZ HD 10 to avi with mencoder

Thu May 14 16:12:26 CEST 2009

2009/5/14 tarnait <tarnai_t at yahoo.de>:
> Hi Grozdan,
>
> here is the full file:
>
> http://prog-mat.elte.hu/vid/best3.avi
>
> and the script I use (I have tried now many variants and the one U suggested works the best):
> one small remark, I HAVE to provide fps and ofps, if not I got no encoding at all, with other values I got a lot of duplicate frame messages. With this script it's exactly 3 frames 94,95 always, and some random value btw 200-600. Maybe it's a but or something, but I can live with that ...

it seems this is the encoded file. Can you also provide a sample from
the *original* file so I can test a few things here?

Thanks

>
>
> #!/bin/bash
>
> for i in `ls -al *.mts | awk '{ print $9 }'`
> do
>
> mencoder $i -oac mp3lame -lameopts vbr=5 -o /dev/null -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=1:v4mv:trell:turbo:aspect=16/9 \
> -fps 50 -ofps 25 -vf yadif=0,scale=1440:1080,harddup,softskip
>
> mencoder $i -oac mp3lame -lameopts vbr=5 -o $i.avi -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=2:v4mv:trell:turbo:aspect=16/9 \
> -fps 50 -ofps 25 -vf yadif=0,scale=1440:1080,harddup,softskip
>
> rm divx2pass.log
>
> done
>
>
> Kind Regards, Tibor
>
>
>
>
> ________________________________
> Von: Grozdan <microchip at telenet.be>
> An: MEncoder usage discussions <mencoder-users at mplayerhq.hu>
> Gesendet: Donnerstag, den 14. Mai 2009, 15:02:45 Uhr
> Betreff: Re: [MEncoder-users] Converting m2ts from JVC GZ HD 10 to avi with mencoder
>
> 2009/5/14 tarnait <tarnai_t at yahoo.de>:
>> Hi,
>>
>> the video is (according to mediainfo interlaced). I need to provide fps and ofps, because I got a lot of duplicate frame/skipped frame messages. The fps=50 ,ofps=25 seems to work. My current script looks like:
>>
>> #!/bin/bash
>>
>> for i in `ls -al *.mts | awk '{ print $9 }'`
>> do
>>
>> mencoder $i -oac mp3lame -lameopts vbr=5 -o /dev/null -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=1:v4mv:trell:turbo:aspect=16/9 \
>> -fps 100 -ofps 50 -vf pullup,yadif=3,scale=1440:1080,softskip
>>
>> mencoder $i -oac mp3lame -lameopts vbr=5 -o $i.avi -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=2:v4mv:trell:turbo:aspect=16/9 \
>> -fps 100 -ofps 50 -vf pullup,yadif=3,scale=1440:1080,softskip
>>
>> rm divx2pass.log
>>
>> done
>>
>>
>> double values because of the bobbing  stuff you've mentioned. This seems to finally give me only a couple duplicate frames, a/v desync is not noticeable.
>>
>> I have to really thank you all for supporting me, I hope I can pay back (with other knowledge) someday.
>
> if possible, can you upload a 50 MB sample to say Mediafire?
> you can cut a chunk with:
>
> mencoder file.mts ovc copy -oac copy -endpos 50mb -o output.avi
>
>>
>> Kind Regards, Tibor
>>
>>
>>
>>
>> ________________________________
>> Von: Grozdan <microchip at telenet.be>
>> An: MEncoder usage discussions <mencoder-users at mplayerhq.hu>
>> Gesendet: Mittwoch, den 13. Mai 2009, 23:43:24 Uhr
>> Betreff: Re: [MEncoder-users] Converting m2ts from JVC GZ HD 10 to avi with mencoder
>>
>> 2009/5/13 tarnait <tarnai_t at yahoo.de>:
>>> Hi Grozdan,
>>>
>>> first of all thanks for your answer. The original file has a framerate of 25 fps, I verified this with mediainfo, powerdirector, and some other program. I try to do a simple transcoding (because x264 playback is slow on my machine), nothing more. I don't care about the framerate, I only want the video in a well playable format, that's all.
>>>
>>> Kind Regards, Tibor
>>
>> well, if so, why are you changing framerates by forcing -fps
>> 60000/1001 ? if the file is interlaced and you want to keep the 25
>> fps, just deinterlace it with either yadif or one of the pp=
>> deinterlacers,
>>
>> -vf yadif=0,softskip,harddup
>>
>> or
>>
>> -vf pp=lb,softskip,harddup
>>
>> also, in your original script, you use filmdint which is a inverse
>> telecine filter (though it sometimes also works as deinterlacer). You
>> shouldn't do that if your file is not telecined
>>
>> a tip on interlaced material: 25 fps interlaced has 50 fields/s and
>> like belcampo said, fields != frames
>>
>>>
>>>
>>>
>>>
>>> ________________________________
>>> Von: Grozdan <microchip at telenet.be>
>>> An: MEncoder usage discussions <mencoder-users at mplayerhq.hu>
>>> Gesendet: Mittwoch, den 13. Mai 2009, 19:47:34 Uhr
>>> Betreff: Re: [MEncoder-users] Converting m2ts from JVC GZ HD 10 to avi with mencoder
>>>
>>> 2009/5/13 tarnait <tarnai_t at yahoo.de>:
>>>> Hi,
>>>>
>>>> I read all posts which could be related to this topic not only here,
>>>> but on the mencoder mailing list and other sources, still I was not
>>>> able to find a proper solution. My JVC camcorder produces m2ts files
>>>> (which are x264 encoded). Ironically I didn't want to be an expert in
>>>> this topic, but I read through all the material about encoding just to
>>>> convert my files into a well playable format. Now I have produced the
>>>> following script:
>>>>
>>>>
>>>> Code:
>>>>
>>>>
>>>> #!/bin/bash
>>>>
>>>> for i in `ls -al *.mts | awk '{ print $9 }'`
>>>> do
>>>>
>>>> mencoder $i -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=1:v4mv:trell:turbo \
>>>> -fps 60000/1001 -vf filmdint,yadif=3,scale=1440:810,softskip -oac mp3lame -lameopts vbr=5 -o /dev/null
>>>>
>>>> mencoder $i -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=2:v4mv:trell:turbo \
>>>> -fps 60000/1001 -vf filmdint,yadif=3,scale=1440:810,softskip -oac mp3lame -lameopts vbr=5 -o $i.avi
>>>>
>>>> rm divx2pass.log
>>>>
>>>> done
>>>>
>>>
>>> First, what if the original frame rate of the file(s) and what are you
>>> trying to achieve? You do realize that yadif-=3 is a bobber (frame
>>> doubling filter)? So if you have 25 fps interlaced material and use
>>> yadif=1 or yadif=3 it will make it 50 fps progressive. When using
>>> yadif=1 or yadif=3 you MUST double both the input and output frame
>>> rate, so it will look something like this for 25 fps interlaced
>>> content:
>>>
>>> -vf yadif=3 -fps 50 -ofps 50
>>>
>>>>
>>>>
>>>> Still I got a lot of duplicate frame and/or Skipped frame messages
>>>> which would not bother me, but the audio is out of sync, or the video
>>>> is playing too fast (it drops about every 2,3,5,20,25) frame depending
>>>> on the framerate. I tried fps={60,25,30, 60000/1001, 30000/1001,
>>>> 24000/1001}, ofps={60,25,30, 60000/1001, 30000/1001, 24000/1001} every
>>>> possible combination. And the duplicated/skipped frames where changing
>>>> depending on the combo, so I assume it's the framerate. The closest
>>>> problem I could found was here
>>>>
>>>> http://lists.mplayerhq.hu/pipermail/mencoder-users/2008-December/009634.html
>>>>
>>>>
>>>> but the solution apparently didn't work for me. Does anyone have an idea what I could try?
>>>> Oh yes, I did try to convert it with the software which they gave
>>>> me to the camcorder - PowerDirector 6.50.310b - of course it did work,
>>>> and the info about the file:
>>>>
>>>> Type: MPEG-4 AVC
>>>> Bitrate: 12.09 Mbps
>>>> Resolution: 1440x1080
>>>> Framerate: 25.00
>>>> SeitenverhältnisTyp: MPEG-4 AVC
>>>> Originaldauer: 00:01:44:04
>>>> Bitrate: 12.09 Mbps
>>>> Auflösung: 1440x1080
>>>> Bildrate: 25.00 Bilder pro Sekunde
>>>> Ratio: 16:9
>>>>
>>>> the only problem is it runs under Windows
>>>>
>>>> Thanks for the answers, Kind Regards,
>>>> trinux
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> MEncoder-users mailing list
>>>> MEncoder-users at mplayerhq.hu
>>>> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>>>>
>>>>
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