Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

2015-05-16 Thread Kevin Wells
Hi Carl, I am on 10.10.3, but with FCP installed. I open all 4 movs up in QT player 10 and took a screen grab of all 4 lined up. There is a slight but acceptable difference between out1 and out3 and the original HD, but it's what I would expect on converting between different compressions. Out2

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Bazza
On Sat, 16 May 2015 10:25:09 + (UTC), Carl Eugen Hoyos wrote: >Since your answer makes no sense (is ac3 doubly bad?), >maybe you could map 1, 2, 3, 4 to out.mp2, out.ac3 and >the two wav files? They say a picture is worth 1000 words etc so I'll do it this way. This is John's problem. Bad

Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

2015-05-16 Thread Carl Eugen Hoyos
Kevin Wells hotmail.co.uk> writes: > >>> $ ffmpeg -i HD_BARS.mov -an -vcodec copy out1.mov > >>> $ ffmpeg -i HD_BARS.mov -an -vcodec v210 out2.mov > >>> $ ffmpeg -i HD_BARS.mov -an -vcodec prores out3.mov > I checked on fcp video scopes and also QuickTime player, > and they are exactly the same

Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

2015-05-16 Thread Kevin Wells
> On 16 May 2015, at 09:45, "Carl Eugen Hoyos" wrote: > > Kevin Wells hotmail.co.uk> writes: > >>> $ ffmpeg -i HD_BARS.mov -an -vcodec copy out1.mov >>> $ ffmpeg -i HD_BARS.mov -an -vcodec v210 out2.mov >>> $ ffmpeg -i HD_BARS.mov -an -vcodec prores out3.mov > >> Hi Carl, I can confirm that a

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Moritz Barsnick
On Sat, May 16, 2015 at 13:07:01 +0200, Moritz Barsnick wrote: > [auto-inserted resampler 0 @ 0xb713840] ch:6 chl:5.1(side) fmt:fltp r:48000Hz > -> ch:2 chl:stereo fmt:fltp r:48000Hz > [auto-inserted resampler 0 @ 0xb3b55c0] ch:6 chl:5.1(side) fmt:fltp r:48000Hz > -> ch:2 chl:stereo fmt:s16 r:480

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
Moritz Barsnick gmx.net> writes: > $ ffmpeg -loglevel debug -i inter.dts -ac 2 -c:a libmp3lame -f null - > $ ffmpeg -loglevel debug -i inter.dts -ac 2 -c:a pcm_s16le -f null - > You can insert other arbitrary codecs at will. > > The former shows a matrix: > 1.00 0.00 0.707107 0.00 0.

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Moritz Barsnick
On Sat, May 16, 2015 at 10:27:07 +, Carl Eugen Hoyos wrote: > Andy Furniss gmail.com> writes: > > > IIRC this has come up before. The issue seems > > to be that sometimes -ac 2 normalises and > > sometimes it doesn't (depending on what codec > > is used). > > > > You can see whether or no

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
Carl Eugen Hoyos ag.or.at> writes: > Please test the following: > $ ffmpeg -i inter.dts -ac 2 out16.wav > $ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav > $ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 > $ ffmpeg -i inter.dts -ac 2 -ab 320k out.mp2 After reading libmp3lame.c sources, the

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
Andy Furniss gmail.com> writes: > IIRC this has come up before. The issue seems > to be that sometimes -ac 2 normalises and > sometimes it doesn't (depending on what codec > is used). > > You can see whether or not the matrix is > normalised with -loglevel debug. I was under the impression

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
Bazza jeack.com.au> writes: > >$ ffmpeg -i inter.dts -ac 2 out16.wav > >$ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav > >$ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 > >$ ffmpeg -i inter.dts -ac 2 -ab 320k out.mp2 > > 1 = Good > 2 = Good > 3 = Bad > 4 = Good > and 1 you didn't list, AC

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Bazza
On Sat, 16 May 2015 09:17:59 + (UTC), Carl Eugen Hoyos wrote: >Sorry, I am apparently extremely dim-witted: >Did you test the four lines above? >Which of them sound ok, which of them do >not sound ok? Seem to have not explicitly answered the Q. Sorry. >$ ffmpeg -i inter.dts -ac 2 out16.wav

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Bazza
On Sat, 16 May 2015 09:17:59 + (UTC), Carl Eugen Hoyos wrote: >Bazza jeack.com.au> writes: > >> >Please test the following: >> >$ ffmpeg -i inter.dts -ac 2 out16.wav >> >$ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav >> >$ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 >> >$ ffmpeg -i i

Re: [FFmpeg-user] subtitles - visual alignment offset?

2015-05-16 Thread Carles Vila
One option would be to use .ass subtitles instead of srt, .ass allows you to adjust position and appearance at will for all or individual subtitles. I use Aegisub for this purpose. -Mensaje original- De: "jamie" Enviado: ‎16/‎05/‎2015 0:26 Para: "FFmpeg user questions" Asunto: [FFmpeg-

Re: [FFmpeg-user] Conform framerate with ffmpeg

2015-05-16 Thread Carles Vila
I will test the -r input option. I also will upload a short clip at 25, 23,98 and 24 to show you what I mean. -Mensaje original- De: "Carl Eugen Hoyos" Enviado: ‎16/‎05/‎2015 10:24 Para: "ffmpeg-user@ffmpeg.org" Asunto: Re: [FFmpeg-user] Conform framerate with ffmpeg Reuben Martin g

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Andy Furniss
John L wrote: Instead, take the 5.1 and _DOWNMIX_ all tracks to a single stereo for the phone/tablet by declaring -acodec -ac 2. No intermediate steps should be required. Consider also - Do you need pcm_s32le ? pcm_s16le is usual. I fail to see how that is any different than what I am doi

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
Bazza jeack.com.au> writes: > >Please test the following: > >$ ffmpeg -i inter.dts -ac 2 out16.wav > >$ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav > >$ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 > >$ ffmpeg -i inter.dts -ac 2 -ab 320k out.mp2 > > Carl, I did test some of this stuff.

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Bazza
On Sat, 16 May 2015 07:52:12 + (UTC), Carl Eugen Hoyos wrote: >Please test the following: >$ ffmpeg -i inter.dts -ac 2 out16.wav >$ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav >$ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 >$ ffmpeg -i inter.dts -ac 2 -ab 320k out.mp2 Carl, I did t

Re: [FFmpeg-user] Text on multiple lines

2015-05-16 Thread lorenzo angeli
Thanks Carl, got it now, hitting enter seems to be working, but I need to find a good way to make this working from a generated command line. Is there any character I can actually use as replacement for \n to make ffmpeg understand there's a carriage return ? Cheers. L. ___

Re: [FFmpeg-user] Text on multiple lines

2015-05-16 Thread Carl Eugen Hoyos
lorenzo angeli efestolab.uk> writes: > 'two>lines' How was ">" produced in this line? Did you hit enter after typing "two"? Please do not top-post here, it is considered rude. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffm

Re: [FFmpeg-user] Text on multiple lines

2015-05-16 Thread lorenzo angeli
HI Carl, not sure I get it, I tried with : [code] ffmpeg -start_number 284 -i /home/efesto/Desktop/A010C009_101029_L1O3/A010C009_101029_L1O3.%4d.dpx -vf "[in] drawtext=fontsize=40:fontcolor=white:fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf:x=(w-tw)/2:y=(h-th)/2:box=1:boxcolor=blac

Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

2015-05-16 Thread Carl Eugen Hoyos
Kevin Wells hotmail.co.uk> writes: > > $ ffmpeg -i HD_BARS.mov -an -vcodec copy out1.mov > > $ ffmpeg -i HD_BARS.mov -an -vcodec v210 out2.mov > > $ ffmpeg -i HD_BARS.mov -an -vcodec prores out3.mov > Hi Carl, I can confirm that all of these three tests > produce a perfect replication of the or

Re: [FFmpeg-user] Text on multiple lines

2015-05-16 Thread Carl Eugen Hoyos
lorenzo angeli efestolab.uk> writes: > -v trace WHY? I don't know if it helps you but the following works as expected (the source code does not search for the string "\n" but for the actual carriage return): [code] $ ffmpeg -f lavfi -i "color=white:d=10,drawtext=text='two > lines'" out.avi [

Re: [FFmpeg-user] Conform framerate with ffmpeg

2015-05-16 Thread Carl Eugen Hoyos
Reuben Martin gmail.com> writes: > On Friday, May 15, 2015 02:42:06 PM Carl Eugen Hoyos wrote: > > Carles Vila gmail.com> writes: > > > 2. Is there a way to conform a ProRes file > > > directly with ffmpeg? All audio channels playback > > > sample rate should also be modified accordingly. > > >

Re: [FFmpeg-user] HD > SD Down-Convert Prores Color

2015-05-16 Thread Kevin Wells
> From: kevwe...@hotmail.co.uk > To: ffmpeg-user@ffmpeg.org > Date: Thu, 14 May 2015 18:56:12 + > Subject: Re: [FFmpeg-user] HD> SD Down-Convert Prores Color > > >> To: ffmpeg-user@ffmpeg.org >> From: ceho...@ag

Re: [FFmpeg-user] Input 5.1 DTS, output 2.0 MP3: Atrocious Quality

2015-05-16 Thread Carl Eugen Hoyos
John L hotmail.com> writes: > ffmpeg version 2.5.6-0ubuntu0.15.04.1 Please test current FFmpeg git head, see http://ffmpeg.org/download.html (Please do not test 2.6) > ffmpeg -i inter.dts -ac 2 -c libmp3lame inter-test.mp3 > This audio sample has the exact same audio defects as > in the shrun