melt - command-line: 8fps to 25fps

[andchir]

melt 6.3.0

Input video: 8 fps, 5 min 19 sec

My command:

/usr/bin/melt \
"/var/www/userfiles/input/1/1478553451_5820ef6b72975.mp4" \
-consumer avformat:"/var/www/userfiles/output/out.mp4" \
width=640 height=360 display_aspect_num=16 display_aspect_den=9 r=25 vcodec=libx264 vb=1228800 acodec=aac ab=128k frequency=44100 deinterlace=1

Output video: 25 fps, 5 min 19 sec - GOOD!

But if I render from XML, I have problem.

Command 1:

/usr/bin/melt \
"/var/www/userfiles/input/1/1478553451_5820ef6b72975.mp4" \
-consumer xml:/var/www/userfiles/tmp/1/5820f57887283.mlt

Command 2:

/usr/bin/melt \
xml:"/var/www/userfiles/tmp/1/5820f57887283.mlt" \
-consumer avformat:"/var/www/userfiles/output/1/1478555000.mp4" \
width=640 height=360 display_aspect_num=16 display_aspect_den=9 r=25 vcodec=libx264 vb=1228800 acodec=aac ab=128k frequency=44100 deinterlace=1

Output video: 25fps, 1 min 40 sec

Video is cuted.

2515 / 25 / 60 / 60 = 1 min 40 sec

How do I fix this?

XML:

<?xml version="1.0" encoding="utf-8"?>
<mlt LC_NUMERIC="C" version="6.3.0" root="/var/www/" title="1478553451_5820ef6b72975.mp4">
  <profile description="automatic" width="1280" height="720" progressive="1" sample_aspect_num="1" sample_aspect_den="1" display_aspect_num="1280" display_aspect_den="720" frame_rate_num="10064" frame_rate_den="1277" colorspace="709"/>
  <producer id="producer0" in="0" out="2515">
    <property name="length">2516</property>
    <property name="eof">pause</property>
    <property name="resource">userfiles/input/1/1478553451_5820ef6b72975.mp4</property>
    <property name="meta.media.nb_streams">2</property>
    <property name="meta.media.0.stream.type">video</property>
    <property name="meta.media.0.stream.frame_rate">7.88097</property>
    <property name="meta.media.0.stream.sample_aspect_ratio">0</property>
    <property name="meta.media.0.codec.width">1280</property>
    <property name="meta.media.0.codec.height">720</property>
    <property name="meta.media.0.codec.rotate">0</property>
    <property name="meta.media.0.codec.frame_rate">8</property>
    <property name="meta.media.0.codec.pix_fmt">yuv420p</property>
    <property name="meta.media.0.codec.sample_aspect_ratio">1</property>
    <property name="meta.media.0.codec.colorspace">709</property>
    <property name="meta.media.0.codec.color_trc">1</property>
    <property name="meta.media.0.codec.name">h264</property>
    <property name="meta.media.0.codec.long_name">H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10</property>
    <property name="meta.media.0.codec.bit_rate">1079736</property>
    <property name="meta.attr.0.stream.handler_name.markup">VideoHandler</property>
    <property name="meta.media.1.stream.type">audio</property>
    <property name="meta.media.1.codec.sample_fmt">fltp</property>
    <property name="meta.media.1.codec.sample_rate">44100</property>
    <property name="meta.media.1.codec.channels">2</property>
    <property name="meta.media.1.codec.name">aac</property>
    <property name="meta.media.1.codec.long_name">AAC (Advanced Audio Coding)</property>
    <property name="meta.media.1.codec.bit_rate">191999</property>
    <property name="meta.attr.1.stream.creation_time.markup">2016-10-31 20:42:38</property>
    <property name="meta.attr.1.stream.handler_name.markup">IsoMedia File Produced by Google, 5-11-2011</property>
    <property name="meta.attr.major_brand.markup">mp42</property>
    <property name="meta.attr.minor_version.markup">0</property>
    <property name="meta.attr.compatible_brands.markup">isommp42</property>
    <property name="meta.attr.creation_time.markup">2016-10-31 20:42:38</property>
    <property name="seekable">1</property>
    <property name="meta.media.sample_aspect_num">1</property>
    <property name="meta.media.sample_aspect_den">1</property>
    <property name="aspect_ratio">1</property>
    <property name="audio_index">1</property>
    <property name="video_index">0</property>
    <property name="mute_on_pause">1</property>
    <property name="mlt_service">avformat</property>
  </producer>
  <playlist id="playlist0">
    <entry producer="producer0" in="0" out="2515"/>
  </playlist>
  <tractor id="tractor0" title="1478553451_5820ef6b72975.mp4" global_feed="1" in="0" out="2515">
    <track producer="playlist0"/>
  </tractor>
</mlt>

[ddennedy]

In command 1, you can specify a profile with 25 fps using the -profile option.

It seems there is a bug such that time values (in frames) are not interpreted according to the in the XML but according to the overriding frame rate specified on the consumer in command 2.

[andchir]

I added "-profile hdv_1080_25p" to Command 1 And now everything seems fine. Thank you for your help!

[devbinod]

@andchir I hope you are doing well. Could you help me? I am facing an issue to convert to convert video.

I got the following error.

/usr/local/Cellar/mlt/7.4.0_2/bin/melt /tmp/templates/template-001/40288ac07f0d38bf017f0d456be100ab.mlt -consumer avformat:/tmp/templates/template-001/40288ac07f0d38bf017f0d456be100ab.mp4
mlt_repository_init: no plugins found in "/usr/local/Cellar/mlt/7.4.0_2/PlugIns/mlt"