[Cin] HDV manual section need some work

[Andrew Randrianasulu]

чт, 3 нояб. 2022 г., 03:34 Andrew Randrianasulu <randrianasulu at gmail.com>:

>
>
> чт, 3 нояб. 2022 г., 03:14 Andrew Randrianasulu <randrianasulu at gmail.com>:
>
>> I think we can add some clarification
>>
>> ---
>> HDV on a Blu-ray Disc Without Re-encoding
>>
>> An MTS file is a video file saved in the high-definition (HD) MPEG
>> Transport Stream video format, commonly called AVCHD. It contains HD video
>> compatible with Blu-ray disc format and is based on the MPEG-2 transport
>> stream. MTS files are often used by Sony, Panasonic, Canon and other HD
>> camcorders. Legal input for Video – MPEG1VIDEO, MPEG2VIDEO, H264; Audio –
>> MP1, MP2, AC3, AC3PLUS, DTS, TRUHD.
>>
>> Note, mp2 and mp1 audio codecs are valid for transport stream itself but
>> not as on-disk format for Blu-Rays.
>>
>> In this case you still can save original video by using ffmpeg's switches
>>
>>  -c:v copy -c:a ac3 , while outputting into another temporal ts container.
>>
>> {waiting for Terje's results on pcm_bluray case}
>>
>>
>> ---
>>
>>
>> I think all m2ts files you used for testing were h264/aac (or ac3), not
>> from-camcoder HDVs with mpeg2 video/mp2 audio.
>>
>> you can try HDV-in-mov from this folder as ffmpeg test file, I think
>>
>> http://samples.mplayerhq.hu/mov/FCP/
>>
>
> oh, this is not mp2 audio but pcm audio. And ..not exactly kind of pcm
> used on blurays!
>
> so this line work, note mpegts_m2ts_mode switch for enabling more bluray
> like output, without it ffmpeg will mux audio into private stream -  good
> luck getting it back!
>
> ffmpeg -i  HDV_1080i50.mov -c:v copy -c:a pcm_bluray  -mpegts_m2ts_mode 1
> hdv.mts
>
> then tsmuxer recognizes mts file as below:
>
> ~/tsMuxer $ tsmuxer hdv.mts
> tsMuxeR version 2.6.16-dev. github.com/justdan96/tsMuxer
> Track ID:    4113
>  Stream type: MPEG-2
> Stream ID:   V_MPEG-2
> Stream info: Profile: Main at 6. Resolution: 1440:1080i. Frame rate: 25
> Stream lang:
>
> Track ID:    4352
> Stream type: LPCM
> Stream ID:   A_LPCM
> Stream info: Bitrate: 1536Kbps  Sample Rate: 48KHz  Channels: 2  Bits per
> sample: 16bit
> Stream lang: eng
>
> Duration: 00:00:08.000
>
> ====
>
> I wonder if you can cp this file few times and then cat them back together
> for simulating longer video ) ?
>
>
https://github.com/OpenShot/openshot-qt/issues/3428#top

this one contain real very short hdv sample with mp2 sound

http://twenkid.com/os/3.m2t





>
>
>
>>
>> ----
>>
>> For creating a blu-ray disc, if you have HDV MPEG-2 media that is in
>> blu-ray format, you can save the original quality of your work, rather than
>> rendering it to another format.
>>
>>
>> {I hope Terje will let us know if bdwrite still works with bluray pcm
>> audio as produced by ffmpeg 5.1+}
>>
>
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