interesting, looks like ffv1 did zero compression here, stream size of .mov & ffv1 avi is the same. or the file size changed, it's only mediainfo computed decompressed stream size ?
On Mon, Jan 21, 2019 at 10:11 PM Jim Shupert <[email protected]> wrote: > On 1/21/2019 2:45 PM, Moritz Barsnick wrote: > > On Mon, Jan 21, 2019 at 14:01:52 -0500, Jim Shupert wrote: > >> if it is in 4 streams you can pick which to hear. > >> > >> My capture system captures 10bit unc mov video [0:0] ( 4ch_test.mov ) > >> and the 4 audio "tracks" are found in 1 stream as 4 channels [0:1.0 , > >> 0:1.1, 0:1.2, 0:1.3 ] > > [...] > > > > Do you need the intermediate file 4s_b.avi? (I assume so, but your > > final file 4s_b.mp4 can be created in one step, if that is desired.) > > Yes - both the ffv1 avi [ 4s_b.avi ] & the mp4 are the goal , the need. > the original capture mov [ 4ch_test.mov ] is very simply what I am > "able" to make via my hardware > which is a blackmagic card running media express. That is I can capture > all 4 "tracks" but only & always into 1 stream with 4 channels > > > >> ---------------------------:: make the ffv1 avi from the 10b mov > capture . > >> 4s_b.avi > >> > >> ffmpeg -i 4ch_test.mov -vcodec ffv1 -level 3 -coder 1 -pix_fmt > >> yuv422p10le -aspect 4:3 -g 1 \ > >> -filter_complex "[0:a]pan=mono|c0=c0[a0]; [0:a]pan=mono|c0=c1[a1]; > >> [0:a]pan=mono|c0=c2[a2]; [0:a]pan=mono|c0=c3[a3]" \ > >> -map 0:v -map "[a0]" -map "[a1]" -map "[a2]" -map "[a3]" -map 0:d -c > >> copy -c:a pcm_s24le -f avi 4s_b.avi > > Your filter > > "[0:a]pan=mono|c0=c0[a0]; [0:a]pan=mono|c0=c1[a1]; > [0:a]pan=mono|c0=c2[a2]; [0:a]pan=mono|c0=c3[a3]" > > is indeed a neat trick to separate your channels into streams. There's > > an easier way though: The "channelsplit" filter: > > https://ffmpeg.org/ffmpeg-filters.html#channelsplit > > > > The second filter ("[0:1] [0:2] amerge") is just fine for creating > > stereo from two separate channels. > > ahhhh :: an "an easier way" wonderful -- in truth I often find there > are many "ways" ... i tend to keep using "one" after I find it works. > Thank you...expanding my understanding is what i am after > > > >> https://trac.ffmpeg.org/wiki/AudioChannelManipulation > > Apparently, you read the section "stereo → 2 × mono files". My > > suggestion with the "channelsplit" is right below, in the section > > "stereo → 2 × mono streams". Actually, both filters will work either > > way, the examples are quite arbitrary, come to think of it. > > > > > will do -- thanks again > > and-- if anyone else has anyThing else to offer ... i am still anxious > to learn more > :) > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
