[MPlayer-users] Converting video to lossless

[Deron Kazmaier]

On 10/8/11 4:31 AM, Lobster wrote:
> On 8/10/2011 8:13 p.m., Deron Kazmaier wrote:
>> Hello,
>>
>> While waiting for the ProRes decoder to be sped up enough to play 
>> 1280x720, 59.94fps without dropping frames, I'd like to try a test 
>> that I conceived back when 32bit Apple ProRes codec was my only choice.
>>
>> Basically, I'd like to use mencoder to convert this video to some 
>> lossless encoding. I've beaten my head, but it always ends up telling 
>> me it is skipping frames. Obviously I have a fundemental 
>> misunderstanding here. What would be the proper mencoder parameters 
>> to encode to say ffvhuff (if that is a reasonable choice even). I 
>> don't care how long it takes to make the ffvhuff file, as long as it 
>> can be played out quicky in mplayer. The disk speed is plenty to 
>> support uncompressed video capture, so playback should be no problem 
>> there.
>>
>> Here is one of the commands I tried, in case you wonder what 
>> direction I was coming from
>>
>> mencoder "/work/testfile.mov" -ni -aspect 16:9 -oac copy -ovc lavc 
>> -lavcopts vcodec=ffvhuff:threads=8 -o testfile.avi
>>
>>
>>
>> Thanks for your help!
>
> try adding -demuxer mov
> when I process prores files with mencoder 90% of the time that is needed
>
> Also rather than copying audio you could -oac pcm just to be sure of 
> things,
>

Thanks! This worked much better!!

Deron