Hi,

The bit I posted was from a shell script so it was posted verbatim. The 
variables are being correctly substituted because $SOURCE is found and the 
output is at the expected $OUTDIR + $OUTPFX location.

As for the output, see below.  I have changed filenames to obfuscated values 
because I don't fancy posting them to the wide internet !

ffmpeg version N-101386-g77ce903f7a Copyright (c) 2000-2021 the FFmpeg 
developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/Foobar/transcoding/build 
--x86asmexe=/Foobar/transcoding/build/bin/yasm --enable-libx264 --enable-gpl
  libavutil      56. 66.100 / 56. 66.100
  libavcodec     58.128.100 / 58.128.100
  libavformat    58. 70.100 / 58. 70.100
  libavdevice    58. 12.100 / 58. 12.100
  libavfilter     7.107.100 /  7.107.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Path/To/My/Input.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    creation_time   : 2021-03-04T10:22:01.000000Z
  Duration: 00:01:58.21, start: 0.000000, bitrate: 15825 kb/s
  Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 
1920x1080 [SAR 1:1 DAR 16:9], 15503 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc 
(default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, 
fltp, 317 kb/s (default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 0x7fc39400f800] using SAR=1/1
[libx264 @ 0x7fc39400f800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 
AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fc39400f800] profile High, level 4.2, 4:2:0, 8-bit
[libx264 @ 0x7fc39400f800] 264 - core 161 r3048 b86ae3c - H.264/MPEG-4 AVC 
codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: 
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=4 
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 
open_gop=0 weightp=2 keyint=72 keyint_min=37 scenecut=0 intra_refresh=0 
rc_lookahead=40 rc=cbr mbtree=1 bitrate=6000 ratetol=1.0 qcomp=0.60 qpmin=0 
qpmax=69 qpstep=4 vbv_maxrate=6000 vbv_bufsize=6000 nal_hrd=none filler=0 
ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/Path/To/My/1080/Output.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    encoder         : Lavf58.70.100
  Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, 
progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 6000 kb/s, 30 fps, 15360 
tbn (default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.128.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 6000000/0/6000000 buffer size: 6000000 
vbv_delay: N/A
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, 
fltp, 317 kb/s (default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
frame= 3545 fps= 70 q=-1.0 Lsize=   84120kB time=00:01:58.16 
bitrate=5831.7kbits/s speed=2.33x   
video:79412kB audio:4579kB subtitle:0kB other streams:0kB global headers:0kB 
muxing overhead: 0.152952%
[libx264 @ 0x7fc39400f800] frame I:50    Avg QP:13.83  size:144424
[libx264 @ 0x7fc39400f800] frame P:1407  Avg QP:17.24  size: 41016
[libx264 @ 0x7fc39400f800] frame B:2088  Avg QP:17.66  size:  7848
[libx264 @ 0x7fc39400f800] consecutive B-frames:  2.5% 56.6%  0.8% 40.1%
[libx264 @ 0x7fc39400f800] mb I  I16..4: 29.1% 53.4% 17.5%
[libx264 @ 0x7fc39400f800] mb P  I16..4:  7.2% 16.7%  0.9%  P16..4: 33.1%  8.4% 
 5.6%  0.0%  0.0%    skip:28.1%
[libx264 @ 0x7fc39400f800] mb B  I16..4:  1.2%  1.4%  0.0%  B16..8: 20.9%  1.6% 
 0.3%  direct: 6.0%  skip:68.5%  L0:35.1% L1:61.4% BI: 3.5%
[libx264 @ 0x7fc39400f800] 8x8 transform intra:64.0% inter:67.9%
[libx264 @ 0x7fc39400f800] coded y,uvDC,uvAC intra: 66.4% 79.2% 41.3% inter: 
15.8% 24.6% 0.3%
[libx264 @ 0x7fc39400f800] i16 v,h,dc,p: 21% 14% 55% 10%
[libx264 @ 0x7fc39400f800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 15% 53%  2%  2%  
2%  2%  2%  2%
[libx264 @ 0x7fc39400f800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 25% 25%  3%  4%  
3%  3%  3%  3%
[libx264 @ 0x7fc39400f800] i8c dc,h,v,p: 52% 26% 19%  3%
[libx264 @ 0x7fc39400f800] Weighted P-Frames: Y:0.4% UV:0.4%
[libx264 @ 0x7fc39400f800] ref P L0: 71.0%  6.6% 14.2%  8.2%  0.0%
[libx264 @ 0x7fc39400f800] ref B L0: 86.4% 10.4%  3.2%
[libx264 @ 0x7fc39400f800] ref B L1: 97.9%  2.1%
[libx264 @ 0x7fc39400f800] kb/s:5505.28
ffmpeg version N-101386-g77ce903f7a Copyright (c) 2000-2021 the FFmpeg 
developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/Foobar/transcoding/build 
--x86asmexe=/Foobar/transcoding/build/bin/yasm --enable-libx264 --enable-gpl
  libavutil      56. 66.100 / 56. 66.100
  libavcodec     58.128.100 / 58.128.100
  libavformat    58. 70.100 / 58. 70.100
  libavdevice    58. 12.100 / 58. 12.100
  libavfilter     7.107.100 /  7.107.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Path/To/My/Input.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    creation_time   : 2021-03-04T10:22:01.000000Z
  Duration: 00:01:58.21, start: 0.000000, bitrate: 15825 kb/s
  Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 
1920x1080 [SAR 1:1 DAR 16:9], 15503 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc 
(default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, 
fltp, 317 kb/s (default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 0x7faa6a80f800] using SAR=1/1
[libx264 @ 0x7faa6a80f800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 
AVX FMA3 BMI2 AVX2
[libx264 @ 0x7faa6a80f800] profile Main, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x7faa6a80f800] 264 - core 161 r3048 b86ae3c - H.264/MPEG-4 AVC 
codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: 
cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=22 lookahead_threads=3 
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 
open_gop=0 weightp=2 keyint=72 keyint_min=37 scenecut=0 intra_refresh=0 
rc_lookahead=40 rc=cbr mbtree=1 bitrate=3000 ratetol=1.0 qcomp=0.60 qpmin=0 
qpmax=69 qpstep=4 vbv_maxrate=3000 vbv_bufsize=3000 nal_hrd=none filler=0 
ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/Path/To/My/720/Output.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    encoder         : Lavf58.70.100
  Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, 
progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 3000 kb/s, 30 fps, 15360 tbn 
(default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : ?Mainconcept Video Media Handler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.128.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 3000000/0/3000000 buffer size: 3000000 
vbv_delay: N/A
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, 
fltp, 317 kb/s (default)
    Metadata:
      creation_time   : 2021-03-04T10:22:01.000000Z
      handler_name    : #Mainconcept MP4 Sound Media Handler
      vendor_id       : [0][0][0][0]
frame= 3545 fps=127 q=-1.0 Lsize=   42273kB time=00:01:58.16 
bitrate=2930.7kbits/s speed=4.24x   
video:37566kB audio:4579kB subtitle:0kB other streams:0kB global headers:0kB 
muxing overhead: 0.304804%
[libx264 @ 0x7faa6a80f800] frame I:50    Avg QP: 9.85  size:100765
[libx264 @ 0x7faa6a80f800] frame P:890   Avg QP:15.30  size: 24723
[libx264 @ 0x7faa6a80f800] frame B:2605  Avg QP:15.87  size:  4386
[libx264 @ 0x7faa6a80f800] consecutive B-frames:  1.5%  0.3%  4.0% 94.2%
[libx264 @ 0x7faa6a80f800] mb I  I16..4: 38.9%  0.0% 61.1%
[libx264 @ 0x7faa6a80f800] mb P  I16..4:  4.8%  0.0%  3.6%  P16..4: 37.2% 17.6% 
10.1%  0.0%  0.0%    skip:26.6%
[libx264 @ 0x7faa6a80f800] mb B  I16..4:  0.4%  0.0%  0.1%  B16..8: 25.1%  2.2% 
 0.4%  direct: 7.6%  skip:64.1%  L0:37.0% L1:57.7% BI: 5.3%
[libx264 @ 0x7faa6a80f800] coded y,uvDC,uvAC intra: 70.8% 84.9% 58.1% inter: 
15.9% 27.8% 1.5%
[libx264 @ 0x7faa6a80f800] i16 v,h,dc,p: 28%  9% 38% 26%
[libx264 @ 0x7faa6a80f800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 21% 26%  5%  5%  
4%  4%  3%  3%
[libx264 @ 0x7faa6a80f800] i8c dc,h,v,p: 57% 25% 14%  4%
[libx264 @ 0x7faa6a80f800] Weighted P-Frames: Y:0.4% UV:0.4%
[libx264 @ 0x7faa6a80f800] ref P L0: 59.8%  5.6% 22.8% 11.8%  0.0%
[libx264 @ 0x7faa6a80f800] ref B L0: 84.9% 10.7%  4.4%
[libx264 @ 0x7faa6a80f800] ref B L1: 97.7%  2.3%
[libx264 @ 0x7faa6a80f800] kb/s:2604.24

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, 4 March 2021 16:27, Phil Rhodes <phil_rho...@rocketmail.com> wrote:

> Hi there
>
> Can I suggest you post for us the actual commandline that ends up getting 
> executed, and the output from ffmpeg, at least until it gets down to the 
> serious number crunching? The problem may be in the way the command is being 
> assembled.
>
> P
>
> On Thursday, 4 March 2021, 16:18:15 GMT, Laura Smith via ffmpeg-user 
> <ffmpeg-user@ffmpeg.org> wrote:
>
> Hi,
>
> Am I missing something simple here ?
>
> The command I am using is based on the example given at 
> https://google.github.io/shaka-packager/html/tutorials/encoding.html :
>
> ffmpeg -i "${SOURCE}" -c:a copy \
>
> -vf "scale=-2:1080" \
>
> -c:v libx264 -profile:v high -level:v 4.2 \
>
> -x264-params scenecut=0:open_gop=0:min-keyint=72:keyint=72 \
>
> -minrate 6000k -maxrate 6000k -bufsize 6000k -b:v 6000k \
>
> -y "${OUTDIR}/1080/${OUTPFX}_1080.mp4"
>
> ffmpeg -i "${SOURCE}" -c:a copy \
>
> -vf "scale=-2:720" \
>
> -c:v libx264 -profile:v main -level:v 4.0 \
>
> -x264-params scenecut=0:open_gop=0:min-keyint=72:keyint=72 \
>
> -minrate 3000k -maxrate 3000k -bufsize 3000k -b:v 3000k \
>
> -y "${OUTDIR}/720/${OUTPFX}_720.mp4"
>
> The source file (an mp4 output from Adobe premiere) audio is perfect, no 
> problems. So there is something happening at the ffmpeg stage ?
>
> Where am I going wrong ?
>
> Thanks !
>
> Laura
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user@ffmpeg.org
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>
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