[FFmpeg-user] Speed up Transcode

AS peace at AleksandrSolzhenitsyn.net
Fri Dec 6 19:17:27 CET 2013

On 13-12-06 08:02 AM, Carl Eugen Hoyos wrote:
>  <peace <at> aleksandrsolzhenitsyn.net> writes:
>> Notebooks <at> Notebook-laptop:~/Videos$ ffmpeg -i Input.MTS 
>> -deinterlace -target ntsc-dvd Output.mpeg
> Afaict, hardware is the limiting factor (I get 
> ten times realtime here).
> Consider using -vf yadif instead of -deinterlace 
> which I suspect is a deprecated option.

I tried the -vf yadif but there was no change in speed.

>> Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), 
>> yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 
>> 90k tbn, 59.94 tbc
> Unrelated:
> Are you sure the stream is interlaced and not telecined?
> It is a bad idea to use a deinterlacer on a telecined 
> input stream.

Well, I don't know or would not know how to find out. The video files
I'm working with are from a Sony HDR cx220 video camera. It produces the
above mentioned avchd .MTS files.

The good part is the transcoding to mpeg works perfectly (so it seems)
so I can't complain.



> Carl Eugen


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