Re: [FFmpeg-user] Need help generating field based Program Stream

[Paul B Mahol]

On 1/24/17, Andy Furniss  wrote:
> If you have a stream of fields and you want to make weaved frames the
> (IIRC) tinterlace=merge would be a start.

Better to use weave filter for that.
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Re: [FFmpeg-user] Need help generating field based Program Stream

[kumar vikram]

Hi Bouke,
Thanks for your prompt response.

For me the idea is to get field based interlaced streams to test some of my
implementation. Maintaining frame rate is not an issue with me.

I tried with tinterlace too but not to my luck.

ffmpeg.exe -y -i INPUT -c:v mpeg2video -flags +ildct+ilme -vf
scale=interl=1,tinterlace=interlacex2 -b:a 256k -aspect 16:9 OUTPUT

Can you please suggest if I have missed any option?

Regards,
Vikram

On Tue, Jan 24, 2017 at 5:04 PM, Bouke (VideoToolShed) <
bo...@videotoolshed.com> wrote:

> - Original Message - From: "kumar vikram" 
>
>
> Hello All,
>> I am having a Program stream which has progressive sequence. I want to
>> convert this stream to Field based PS files.
>>
>> I have used the following command
>>
>> ffmpeg.exe -y -i INPUT -c:v mpeg2video -flags +ildct+ilme -vf yadif=1 -top
>> 1 -b:a 256k -aspect 16:9 OUTPUT
>>
>> But this is creating Frame based interlaced stream.
>>
>> Looks like I have missed some options. Can you please help me fix this
>> problem?
>>
>
> Hi Vikram,
> What do you expect? If the source is progressive, an interlaced output
> will have two fields taken at the same time, thus still look progressive.
> If the framerate does not change, besides doing this for being compatible
> with streams that must be interlaced, there is no reason to do so.
> If you do want to change the framerate (eg from 50p to 25i, or add
> pulldown), there is logic. Have a look at the Tinterlace filter.
> hth,
> Bouke
>
>
>> Regards,
>> Vikram
>>
>
>
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Re: [FFmpeg-user] Need help generating field based Program Stream

[Bouke (VideoToolShed)]

- Original Message - 
From: "kumar vikram" 




Hello All,
I am having a Program stream which has progressive sequence. I want to
convert this stream to Field based PS files.

I have used the following command

ffmpeg.exe -y -i INPUT -c:v mpeg2video -flags +ildct+ilme -vf yadif=1 -top
1 -b:a 256k -aspect 16:9 OUTPUT

But this is creating Frame based interlaced stream.

Looks like I have missed some options. Can you please help me fix this
problem?


Hi Vikram,
What do you expect? If the source is progressive, an interlaced output will 
have two fields taken at the same time, thus still look progressive.
If the framerate does not change, besides doing this for being compatible 
with streams that must be interlaced, there is no reason to do so.
If you do want to change the framerate (eg from 50p to 25i, or add 
pulldown), there is logic. Have a look at the Tinterlace filter.

hth,
Bouke



Regards,
Vikram



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