[MEncoder-users] Help with mencoder
JD
jd1008 at gmail.com
Sun Mar 6 22:31:41 CET 2011
$ mencoder Zachar*.flv -ovc copy -oac copy -o Zach_all.avi
MEncoder SVN-r31628-4.4.5 (C) 2000-2010 MPlayer Team
success: format: 0 data: 0x0 - 0xc396ae
libavformat file format detected.
[flv @ 0x97b5d40] Estimating duration from bitrate, this may be inaccurate
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0
VIDEO: [H264] 480x270 0bpp 29.917 fps 119.2 kbps (14.5 kbyte/s)
[V] filefmt:44 fourcc:0x34363248 size:480x270 fps:29.917 ftime:=0.0334
videocodec: framecopy (480x270 0bpp fourcc=34363248)
Audio format 0x4134504d is incompatible with '-oac copy', please try
'-oac pcm' instead or use '-fafmttag' to override it.
Exiting...
On 03/06/2011 04:11 PM, Jonathan Busby wrote:
> What was the specific error?
>
> Jonathan
>
> On Sun, Mar 6, 2011 at 3:16 PM, JD<jd1008 at gmail.com> wrote:
>
>> I DID indeed try that one as well.
>> Mencoder complained about my using -oac copy
>> and it suggested I use -oac pcm. SO I did do that
>> and the avi file was created. But when I
>> played the resulting avi file, it only played the very
>> first video of 12 videos, and it exited; as if that
>> was the end of the file. The size of the resulting
>> avi file was well over a gigabyte.
>>
>> Cheers,
>>
>> JD
>>
>>
>> On 03/06/2011 03:54 PM, Jonathan Busby wrote:
>>
>>> In that case you can just do a re-mux :
>>>
>>> mencoder Zachar*.flv -ovc copy -oac copy -o Zach_all.avi
>>>
>>>
>>> Jonathan
>>>
>>>
>>> On Sun, Mar 6, 2011 at 2:57 PM, JD<jd1008 at gmail.com> wrote:
>>>
>>> Thank you Jonathan.
>>>> They are indeed all of the same resolution and scale and same frame rate,
>>>> even same audio frequency and rate.
>>>>
>>>> Cheers,
>>>>
>>>> JD
>>>>
>>>>
>>>>
>>>> On 03/06/2011 02:37 PM, Jonathan Busby wrote:
>>>>
>>>> Also, you'd have to use the -vf expand filter in conjunction with the
>>>>> scale
>>>>> filter to get a fixed resolution.
>>>>>
>>>>> Jonathan
>>>>>
>>>>> On Sun, Mar 6, 2011 at 4:15 PM, Jonathan Busby<jonathanbusby at gmail.com
>>>>>
>>>>>> wrote:
>>>>>>
>>>>> I forgot to mention that they all have to have the same resolution;
>>>>>
>>>>>> otherwise you're going to have to use the -vf scale filter on them
>>>>>> individually and then do a stream copy assuming you've fixed the
>>>>>> framerate
>>>>>> of all the sub-videos.
>>>>>>
>>>>>> Jonathan
>>>>>>
>>>>>>
>>>>>> On Sun, Mar 6, 2011 at 4:11 PM, Jonathan Busby<jonathanbusby at gmail.com
>>>>>>
>>>>>>> wrote:
>>>>>>>
>>>>>> You can't use the text based "cat" command to combine structured
>>>>>> binary
>>>>>>
>>>>>>> video files -- it just doesn't work that way.
>>>>>>> You have to re-encode (transcode) your source videos into a new video.
>>>>>>>
>>>>>>> Here is an example that would work for you :
>>>>>>>
>>>>>>> mencoder Zachar*.flv -ovc x264 -x264encopts crf=18 -oac mp3lame
>>>>>>> -lameopts
>>>>>>> preset=insane -o Zach_all.avi
>>>>>>>
>>>>>>>
>>>>>>> Jonathan
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Sat, Mar 5, 2011 at 3:09 PM, JD<jd1008 at gmail.com> wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>>> I wanted to combine 12 flash video files (from youtube)
>>>>>>>> into a single avi file.
>>>>>>>> So I did
>>>>>>>>
>>>>>>>> cat at Zachar*.flv> Zach_all.flv
>>>>>>>>
>>>>>>>> $ mencoder Zach_all.flv -o Zach_all.avi -forceidx -ovc copy -oac pcm
>>>>>>>>
>>>>>>>> The output shows skipping frames, and
>>>>>>>> missing aspect information, as you see below.
>>>>>>>>
>>>>>>>> What do I need to do to fix that, so thet when I am transcoding into
>>>>>>>> .avi,
>>>>>>>> I do not get these skips and missing aspect info?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> MEncoder SVN-r31628-4.4.5 (C) 2000-2010 MPlayer Team
>>>>>>>> success: format: 0 data: 0x0 - 0x8378f0a
>>>>>>>> libavformat file format detected.
>>>>>>>> [flv @ 0x92d07a0] Estimating duration from bitrate, this may be
>>>>>>>> inaccurate
>>>>>>>> [lavf] stream 0: video (h264), -vid 0
>>>>>>>> [lavf] stream 1: audio (aac), -aid 0
>>>>>>>> VIDEO: [H264] 480x270 0bpp 29.917 fps 119.2 kbps (14.5 kbyte/s)
>>>>>>>> [V] filefmt:44 fourcc:0x34363248 size:480x270 fps:29.917
>>>>>>>> ftime:=0.0334
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ==========================================================================
>>>>>>>> Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
>>>>>>>> AUDIO: 44100 Hz, 2 ch, s16le, 49.5 kbit/3.51% (ratio: 6184->176400)
>>>>>>>> Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4
>>>>>>>> Audio))
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ==========================================================================
>>>>>>>> videocodec: framecopy (480x270 0bpp fourcc=34363248)
>>>>>>>> Writing header...
>>>>>>>> ODML: Aspect information not (yet?) available or unspecified, not
>>>>>>>> writing
>>>>>>>> vprp header.
>>>>>>>> Writing header...
>>>>>>>> ODML: Aspect information not (yet?) available or unspecified, not
>>>>>>>> writing
>>>>>>>> vprp header.
>>>>>>>> Pos: 0.7s 21f ( 0%) 14.38fps Trem: 0min 0mb A-V:0.067
>>>>>>>> [0:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 1.1s 33f ( 0%) 18.45fps Trem: 0min 0mb A-V:0.068
>>>>>>>> [150:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 6.0s 182f ( 0%) 38.81fps Trem: 65min 1014mb A-V:0.067
>>>>>>>> [148:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 23.5s 706f ( 0%) 43.90fps Trem: 70min 1142mb A-V:0.067
>>>>>>>> [106:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 38.4s 1153f ( 0%) 44.83fps Trem: 68min 1147mb A-V:0.067
>>>>>>>> [113:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 57.4s 1723f ( 0%) 44.84fps Trem: 66min 1117mb A-V:0.068
>>>>>>>> [124:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 76.9s 2306f ( 1%) 44.36fps Trem: 65min 1089mb A-V:0.067
>>>>>>>> [128:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 98.4s 2950f ( 1%) 44.17fps Trem: 65min 1092mb A-V:0.067
>>>>>>>> [126:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 117.5s 3522f ( 1%) 43.68fps Trem: 65min 1086mb A-V:0.067
>>>>>>>> [128:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 132.5s 3972f ( 2%) 43.76fps Trem: 66min 1092mb A-V:0.067
>>>>>>>> [127:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 153.7s 4608f ( 2%) 44.14fps Trem: 66min 1104mb A-V:0.067
>>>>>>>> [126:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 173.1s 5190f ( 2%) 43.84fps Trem: 68min 1133mb A-V:0.067
>>>>>>>> [120:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 190.3s 5705f ( 3%) 44.08fps Trem: 67min 1122mb A-V:0.067
>>>>>>>> [121:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 211.7s 6347f ( 3%) 43.80fps Trem: 66min 1114mb A-V:0.068
>>>>>>>> [124:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 228.7s 6856f ( 3%) 43.84fps Trem: 66min 1113mb A-V:0.067
>>>>>>>> [124:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 248.1s 7436f ( 4%) 44.06fps Trem: 65min 1110mb A-V:0.067
>>>>>>>> [125:1411]
>>>>>>>> Skipping frame!
>>>>>>>> Pos: 265.3s 7954f ( 4%) 43.82fps Trem: 66min 1120mb A-V:0.067
>>>>>>>> [123:1411]
>>>>>>>> Skipping frame!
>>>>>>>>
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>>>>>>>>
>>>>>>>>
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