[Libav-user] New MLP Encoder(urgent)

[Marcus Johnson]

So that's why he asked where the code was on my blog about a week ago :)

Your input is being detected as video, you need to use ffmpeg -i
inputfile.wav -acodec mlp ~/OutputFile.mlp

This is assuming that your encoder is properly registered with AVCodec, and
the build system (there are a few files that have to be set up for it to
compile properly, like config.h, the configure and make scripts, and I feel
like I'm forgetting another one or two.)

On Mon, Oct 27, 2014 at 10:46 PM, greeshma <greeshmabalabadra at gmail.com>
wrote:

> hi,
>
> Actually i have applied for OPW program and i need to validate bitstream.i
> have made required patches with the help my my mentor ramiro polla.
> now i just need to convert files,for which i need command line options.i
> tried above options but couldn't get it
>
>
>
> greeshma
>
>
> On Tue, Oct 28, 2014 at 7:44 AM, Marcus Johnson <
> bumblebritches57 at gmail.com> wrote:
>
>> How exactly do you intend on encoding MLP? there is no encoder included
>> with ffmpeg (or LibAV AFAIK), there is an ancient one floating around on
>> the internet that would need a lot of work to be patched in, so I'm not
>> really sure how you plan on achieving this?
>>
>> On Mon, Oct 27, 2014 at 10:09 PM, greeshma <greeshmabalabadra at gmail.com>
>> wrote:
>>
>>> HI,
>>>
>>> I am working on validating Mlp encoder in Libavcodec .
>>> I have converted .wav file to .pcm file using acodec pcm_s16le .
>>> Now i want to convert .pcm file to .mlp file using mlp encoder which i
>>> am working on.
>>>
>>> the command line tool i am using is
>>> ./ffmpeg -i ~/file.pcm -acodec mlp -b:a 18m -r 29.97 -strict unofficial
>>> -sample_fmt s16 ~/final.mlp
>>>
>>> But  i am getting the below error
>>>
>>> user at user:~/ffmpeg_sources/ffmpeg$ ./ffmpeg -i ~/file.raw -acodec mlp
>>> -b:a 18m -r 29.97 -strict unofficial -sample_fmt s16 ~/final.mlp
>>> ffmpeg version 2.4.git Copyright (c) 2000-2014 the FFmpeg developers
>>>   built on Oct 27 2014 22:58:52 with gcc 4.8 (Ubuntu/Linaro
>>> 4.8.1-10ubuntu9)
>>>   configuration: --prefix=/home/soumya/ffmpeg_build
>>> --extra-cflags=-I/home/soumya/ffmpeg_build/include
>>> --extra-ldflags=-L/home/soumya/ffmpeg_build/lib --bindir=/home/soumya/bin
>>> --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype
>>> --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis
>>> --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --cc=c99
>>>   libavutil      54. 10.100 / 54. 10.100
>>>   libavcodec     56.  9.102 / 56.  9.102
>>>   libavformat    56.  9.101 / 56.  9.101
>>>   libavdevice    56.  1.100 / 56.  1.100
>>>   libavfilter     5.  2.100 /  5.  2.100
>>>   libswscale      3.  1.101 /  3.  1.101
>>>   libswresample   1.  1.100 /  1.  1.100
>>>   libpostproc    53.  3.100 / 53.  3.100
>>> [image2 @ 0x3d6ff60] Format image2 detected only with low score of 5,
>>> misdetection possible!
>>> [rawvideo @ 0x3d70d80] Invalid pixel format.
>>> [image2 @ 0x3d6ff60] Failed to open codec in av_find_stream_info
>>> [rawvideo @ 0x3d70d80] Invalid pixel format.
>>> [image2 @ 0x3d6ff60] Could not find codec parameters for stream 0
>>> (Video: rawvideo, none): unspecified size
>>> Consider increasing the value for the 'analyzeduration' and 'probesize'
>>> options
>>> /home/user/file.raw: could not find codec parameters
>>> Input #0, image2, from '/home/soumya/file.raw':
>>>   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
>>>     Stream #0:0: Video: rawvideo, none, 25 tbr, 25 tbn, 25 tbc
>>> Codec AVOption b (set bitrate (in bits/s)) specified for output file #0
>>> (/home/soumya/final.mlp) has not been used for any stream. The most likely
>>> reason is either wrong type (e.g. a video option with no video streams) or
>>> that it is a private option of some encoder which was not actually used for
>>> any stream.
>>> File '/home/user/final.mlp' already exists. Overwrite ? [y/N] y
>>> Output #0, mlp, to '/home/user/final.mlp':
>>> Output file #0 does not contain any stream
>>>
>>>
>>> and one more kind of error
>>>
>>> /home/user/file.pcm: Invalid data found when processing input
>>>
>>> Please help me out
>>>
>>>
>>> Greeshma Balabhadra
>>>
>>>
>>>
>>> _______________________________________________
>>> Libav-user mailing list
>>> Libav-user at ffmpeg.org
>>> http://ffmpeg.org/mailman/listinfo/libav-user
>>>
>>>
>>
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