Ho to get a pure interlaced mp4 with ffmpeg?

[marcorocchini]

the same problem of duration doubled is present trying to export by speed razor. However I think it uses the same directshow avi mux



so I wonder: can I try to replace the avi mux module present in directshow with another?

[poisondeathray]

I used mainconcept MP4 muxer - can you try that in graphstudio or s**** r**** ?

[poisondeathray]

Remember that AX components ? You can try their AX64 file writer, and/or AX MP4 multiplexer filter as well

Did you try the "dump" filter jagabo suggested ?

(everytime I see "dump" I think of this )

[marcorocchini]

I used mainconcept MP4 muxer - can you try that in graphstudio or s**** r**** ?

you use that to get a mp4 file?

[marcorocchini]

Remember that AX components ? You can try their AX64 file writer, and/or AX MP4 multiplexer filter as well

Did you try the "dump" filter jagabo suggested ?

(everytime I see "dump" I think of this )

[Attachment 28781 - Click to enlarge]

the problem of the ax64 is that the speed razor for cats don't see it in list of codecs, is there a way to "see" it?

I searched the dump in the DSFMGR but I cannot find it, where is downloadable?

[poisondeathray]

I used mainconcept MP4 muxer - can you try that in graphstudio or s**** r**** ?

you use that to get a mp4 file?

Yes, mainconcept mp4 muxer => file writer in graphstudio (plus)

Looks ok time wise.. quality.....not so good compared to x264 at the same bitrate

Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 14.5 MiB
Duration : 11s 0ms
Overall bit rate : 11.0 Mbps
Encoded date : UTC 2014-11-24 16:47:45
Tagged date : UTC 2014-11-24 16:47:45

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High 4:2:2@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=3, N=33
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 11s 0ms

[poisondeathray]

Maybe s**** r**** can only use "AVI" components ? Have you ever been able to use anything non AVI/VFW even in directshow ?

[marcorocchini]

I used mainconcept MP4 muxer - can you try that in graphstudio or s**** r**** ?

is called mainconcept MP4 muxer? seems I cannot find it



or is the Mainconcept MP4 Multiplexer?

[poisondeathray]

Yes, mainconcept mp4 multiplexer - you had the same one in your 1st screenshot on the last page (post 49)

[marcorocchini]

Maybe s**** r**** can only use "AVI" components ? Have you ever been able to use anything non AVI/VFW even in directshow ?

mm maybe yes, remeber is a program for cats

however the problem of duration doubled is present also when I try to write file in graphstudio. I'm not able to write mp4 files, but on avi file the duration seems constantly doubled

[poisondeathray]

Can you try the AX components in graphstudio ? Just to see if duration is doubled. If it's not, that suggests some issues with using AVI in your workflow

[marcorocchini]

trying using mainconcept mxf decoder but after the press play, system freeze and I have to kill graphstudio with the task manager

using ffdshow as decoder, when I press the play button don't do nothing (but ffdshow seems take progressive output also when the interlacing options are cheched)

How I have configure graphstudio to use ax components?

[marcorocchini]

also trying this:
but graphstudio don't write the mp4 output file

[poisondeathray]

I don't know, maybe contact rovi/mainconcept ? The other difference was graphstudio next (not graphstudio original), and broadcast avc encoder (422)

I think the cat gods are sending you another sign to update your NLE

[marcorocchini]

poison a kindness: do you know if exist a patch for the x264vfw that "enable" the paff mode?

or can I convert with ffmpeg a mpeg_in_avi mbaff file to mp4 paff? thanks

[poisondeathray]

poison a kindness: do you know if exist a patch for the x264vfw that "enable" the paff mode?

or can I convert with ffmpeg a mpeg_in_avi mbaff file to mp4 paff? thanks

This was already answered a few times. Not possible.

You need to hire someone to write a paff branch for x264

[marcorocchini]

I'm trying to use the mainconcept only for proofs of quality, but it different a lot beetween the x264vfw

When I use the x264vfw I set CRF to 18 and use this additional line

--tff --range tv --colorprim bt709 --transfer bt709 --colormatrix bt709 --keyint 33 --bframes 1 --sar 1:1 --log-level none

please poison if I would use the mainconcept can you tell me what parameter I have to set to "equalize" the mainconcept at the same quality of the x264vfw? I don't see the crf, maybe the costant can replace crf? but most of difficulty I have to set the "advanced settings section"

[poisondeathray]

I'm trying to use the mainconcept only for proofs of quality, but it different a lot beetween the x264vfw

When I use the x264vfw I set CRF to 18 and use this additional line

--tff --range tv --colorprim bt709 --transfer bt709 --colormatrix bt709 --keyint 33 --bframes 1 --sar 1:1 --log-level none

please poison if I would use the mainconcept can you tell me what parameter I have to set to "equalize" the mainconcept at the same quality of the x264vfw? I don't see the crf, maybe the costant can replace crf? but most of difficulty I have to set the "advanced settings section"

Big difference , right?

In terms of quality and compression? The truth is you can't with Mainconcept, unless you use much larger filesizes. Set a higher bitrate or lower quantizer

If you mean single pass rate control in general, you can use quantizer based encoding, but it's not quite the same as CRF either. More recent versions have "constant quality, average quantizer", that is the most similar to CRF, but still you need much larger bitrates for similar quality. The directshow version I think lets you enter a range. The values don't correspond to x264's values, so you have to do trial and error

[jagabo]

poison a kindness: do you know if exist a patch for the x264vfw that "enable" the paff mode?

or can I convert with ffmpeg a mpeg_in_avi mbaff file to mp4 paff? thanks

Maybe if you ask another dozen times he'll change his answer.

[marcorocchini]

If you mean single pass rate control in general, you can use quantizer based encoding, but it's not quite the same as CRF either. More recent versions have "constant quality, average quantizer", that is the most similar to CRF, but still you need much larger bitrates for similar quality. The directshow version I think lets you enter a range. The values don't correspond to x264's values, so you have to do trial and error

double pass take more quality? seems to me x264vfw have a very high quality

[marcorocchini]

AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

or to "resolve": what is the correspondant in ffmpeg?

theorically I can remux the the doubled duration with ffmpeg to have a correct duration...

[poisondeathray]

If you mean single pass rate control in general, you can use quantizer based encoding, but it's not quite the same as CRF either. More recent versions have "constant quality, average quantizer", that is the most similar to CRF, but still you need much larger bitrates for similar quality. The directshow version I think lets you enter a range. The values don't correspond to x264's values, so you have to do trial and error

double pass take more quality? seems to me x264vfw have a very high quality

No , 2 pass won't affect it much. x264 is the "gold standard" for AVC encoders . To overcome it's deficiences, you must use higher bitrate with Mainconcept. It's as simple as that. On average you need about 1.3-1.5x the filesize for similar quality as a rough guideline, using typical settings . If you want to use Mainconcept , just factor that in and you'll be fine

AssumeTFF().SeparateFields().SelectEvery(4, 0, 3).Weave()

or to "resolve": what is the correspondant in ffmpeg?

theorically I can remux the the doubled duration with ffmpeg to have a correct duration...

I posted how to do this ffmpeg "reinterlace" in your other threads . It was either the 2nd or 3rd low pass thread There were several variations of how to do it in ffmpeg and with ffbmc, each with pros/cons +/- low pass... Hint: remember -vf tinterlace etc....

Are you sure remux "fixes" duration ? Hopefully nothing else is "broken"...

[marcorocchini]

I don't know any way to resolve...
Seems to me that durations is exactly doubles, so I hypotyze that:

I put the exported .avi from speedrazorforcats5.51 into ffmpeg that have, that should, decimate x2 the duration but...

is it possible use the -vcodec copy and at the same time half the duration? ^^

[poisondeathray]

upload sample with "double duration"

[marcorocchini]

from the timeline of the dyno-nle I have select 5seconds. If I try export with all other encoder I get a 5seconds of file, but only with the mainconcept and only in "interlaced field" the duration is doubled (5seconds.avi = 10,0 seconds)

[marcorocchini]

ps: duration become 10 seconds , 40 ms if in the advanced settings, the "write end of sequence" is set to yes:



otherwise is 10,00 (exactly the double)

[racer-x]

I wonder if outputing as Transport Stream instead of mp4 would correct the duration error? try adding this near the end -f mpegts

You'll need to output as TS, but the station should be able to use that anyway.

[racer-x]

That sample has duplicate frames, that's why it's 10 sec.

[poisondeathray]

I don't think you can "fix" this, certainly not with "stream copy" . Elementary stream isn't encoded properly

The cat gods are sending you another sign....

[marcorocchini]

ok but the doubled duration is not guilty of Speed Razor For Cats 5.51, is a problem in output of the mainconcept codec: in fact the same doubled duration is present if you try to encode the C0044.mxf using graphstudio once time in "interlaced fields" and in "interlaced frames"

when encoding in "interlaced frames" duration is the same of the original c0044.mxf

when encoding in "interlaced fields" duration is doubled (C0044out.avi)



seems duplicate frame, considering the attached C0044out.avi really is not a way to cut the frame duplication with ffmpeg to half duration?