[Libav-user] New MLP Encoder(urgent)

[greeshma]

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
>>
>>
>>
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>>
>>
>
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