[FFmpeg-user] MLV-files
Kieran O Leary
kieran.o.leary at gmail.com
Fri Mar 31 00:45:08 EEST 2017
Hi,
On Wed, Mar 29, 2017 at 9:07 PM, Cecil Westerhof <Cecil at decebal.nl> wrote:
> Yesterday I discovered Magic Lantern. I read that ffmpeg supports the
> MLV format. Does anyone has experience with this?
>
> What have you tried already and what are you hoping to do? I haven't tried
MLV in years, seeing as my 650D could only do pretty much SD RAW. I
downloaded a test file from here from 2014 - MLV may have evolved since
then : https://www.magiclantern.fm/forum/index.php?topic=11899.0
and ffmpeg seems to handle it very well. I'd imagine that you might want to
make a prores version, so here's what my terminal output looked like.
There's some DTS errors which I'm not entirely sure of but the video looks
good - there could be audio sync issues if it was a longer clip with audio,
but I'm weak with things like PTS/DTS:
ffmpeg -i Downloads/5DII_14may14_blfixOFF.MLV -c:v prores prores.mov
ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.3.0 (Homebrew gcc 5.3.0)
configuration: --prefix=/home/kieranjol/.linuxbrew/Cellar/ffmpeg/3.2.4
--enable-shared --enable-pthreads --enable-gpl --enable-version3
--enable-hardcoded-tables --enable-avresample
--cc=/home/kieranjol/.linuxbrew/bin/gcc-5 --host-cflags='-Os -w -pipe
-march=native' --host-ldflags='-L/home/kieranjol/.linuxbrew/lib
-Wl,--dynamic-linker=/home/kieranjol/.linuxbrew/lib/ld.so
-Wl,-rpath,/home/kieranjol/.linuxbrew/lib' --enable-ffplay --enable-libass
--enable-libfreetype --enable-libmp3lame --enable-libx264 --enable-libx265
--enable-libxvid --disable-lzma --enable-libopenjpeg
--disable-decoder=jpeg2000
--extra-cflags=-I/home/kieranjol/.linuxbrew/Cellar/openjpeg/2.1.2/include/openjpeg-2.1
--enable-vda
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Ignoring attempt to set invalid timebase 1/0 for st:1
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mlv, from 'Downloads/5DII_14may14_blfixOFF.MLV':
Metadata:
guid : 0x2b1f92591e422d93
picStyleName : Neutral
isoMode : manual
isoValue : 400
isoAnalog : 88
digitalGain : 0
shutterValue : 21348
focalLength : 105
focalDist : 70
aperture : 400
stabilizerMode : 14
autofocusMode : 3
flags : 0
lensID : 237
lensName : EF24-105mm f/4L IS USM
cameraName : Canon EOS 5D Mark II
cameraModel : 2147484184
cameraSerial : 8AF4F7AC
wb_mode : 1
kelvin : 5200
wbgain_r : 461
wbgain_g : 1024
wbgain_b : 590
wbs_gm : 0
wbs_ba : 4294967292
picStyleId : 132
contrast : 4294967292
sharpness : 2
saturation : 4294967294
colortone : 0
time : 2014-05-16 01:52:13
Duration: 00:00:00.67, start: 0.000000, bitrate: 732719 kb/s
Stream #0:0: Video: rawvideo (BIT[16] / 0x10544942), bayer_rggb16le,
1856x1044, 23.98 tbr, 23.98 tbn, 23.98 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz,
stereo, s16, 1536 kb/s
[prores @ 0x1e99a00] encoding with ProRes standard (apcn) profile
[prores @ 0x1e9e3e0] encoding with ProRes standard (apcn) profile
[prores @ 0x1ea3000] encoding with ProRes standard (apcn) profile
[prores @ 0x1ea7d20] encoding with ProRes standard (apcn) profile
[prores @ 0x1dd2b40] encoding with ProRes standard (apcn) profile
Output #0, mov, to 'prores.mov':
Metadata:
guid : 0x2b1f92591e422d93
picStyleName : Neutral
isoMode : manual
isoValue : 400
isoAnalog : 88
digitalGain : 0
shutterValue : 21348
focalLength : 105
focalDist : 70
aperture : 400
stabilizerMode : 14
autofocusMode : 3
flags : 0
lensID : 237
lensName : EF24-105mm f/4L IS USM
cameraName : Canon EOS 5D Mark II
cameraModel : 2147484184
cameraSerial : 8AF4F7AC
wb_mode : 1
kelvin : 5200
wbgain_r : 461
wbgain_g : 1024
wbgain_b : 590
wbs_gm : 0
wbs_ba : 4294967292
picStyleId : 132
contrast : 4294967292
sharpness : 2
saturation : 4294967294
colortone : 0
time : 2014-05-16 01:52:13
encoder : Lavf57.56.101
Stream #0:0: Video: prores (apcn / 0x6E637061), yuv422p10le, 1856x1044,
q=2-31, 200 kb/s, 23.98 fps, 11988 tbn, 23.98 tbc
Metadata:
encoder : Lavc57.64.101 prores
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 128 kb/s
Metadata:
encoder : Lavc57.64.101 aac
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> prores (native))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0x1de7e60] Queue input is backward in time
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9216,
current: 641; changing to 9217. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9217,
current: 1665; changing to 9218. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9218,
current: 2689; changing to 9219. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9219,
current: 3713; changing to 9220. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9220,
current: 4737; changing to 9221. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9221,
current: 5761; changing to 9222. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9222,
current: 6785; changing to 9223. This may result in incorrect timestamps in
the output file.
[aac @ 0x1de7e60] Queue input is backward in time
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9223,
current: 7809; changing to 9224. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9224,
current: 8833; changing to 9225. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9225,
current: 257; changing to 9226. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9226,
current: 1281; changing to 9227. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9227,
current: 2305; changing to 9228. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9228,
current: 3329; changing to 9229. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9229,
current: 4353; changing to 9230. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9230,
current: 5377; changing to 9231. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9231,
current: 6401; changing to 9232. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9232,
current: 7425; changing to 9233. This may result in incorrect timestamps in
the output file.
[mov @ 0x1dd11c0] Non-monotonous DTS in output stream 0:1; previous: 9233,
current: 8449; changing to 9234. This may result in incorrect timestamps in
the output file.
frame= 4 fps=0.0 q=-0.0 Lsize= 2047kB time=00:00:00.21
bitrate=76666.9kbits/s speed=0.407x
video:2036kB audio:10kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.073966%
[aac @ 0x1de7e60] Qavg: 161.729
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