[Kdenlive-devel] rendered DVD video - picture still "jerks" in DVD player

Sat Jun 2 00:54:12 UTC 2007

Thank you harryvanderwolf for patience and help
but still no success :(
still the same kind of jerkiness in my video when played in DVD player (in Kaffeine, Xine or Mplayer it is OK)

I tried these export profile options among many others as suggested:

0:Custom:target_dvd_acodec_mp2_abitrate_128_vbitrate_1000::::avformat::mpeg:format=dvd vcodec=mpeg2video acodec=mp2 size=720x576 video_bit_rate=3000000 video_rc_max_rate=5000000 video_rc_min_rate=300000 video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=5000000 audio_bit_rate=128000 audio_sample_rate=48000 frame_size=720x576 frame_rate=25 gop_size=15

0:Custom:DVD VOB ac3 192 video 6500_8000::::avformat:PAL:vob:format=dvd aspect=4:3 vcodec=mpeg2video acodec=ac3 video_bit_rate=6500000 video_rc_max_rate=8000000 video_rc_min_rate=0 video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=10080000 audio_bit_rate=192000 audio_sample_rate=48000 frame_size=720x576 frame_rate=25 gop_size=15 me_range=63

0:Custom:DVD VOB mp3 192 video 6500_8000::::avformat:PAL:vob:format=dvd aspect=4:3 vcodec=mpeg2video acodec=mp3 video_bit_rate=6500000 video_rc_max_rate=8000000 video_rc_min_rate=0 video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=10080000 audio_bit_rate=192000 audio_sample_rate=48000 frame_size=720x576 frame_rate=25 gop_size=15 me_range=63

0:Custom:DVD VOB ac3 448 video 6500_8000::::avformat:PAL:vob:format=dvd aspect=4:3 vcodec=mpeg2video acodec=ac3 video_bit_rate=6500000 video_rc_max_rate=8000000 video_rc_min_rate=0 video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=10080000 audio_bit_rate=448000 audio_sample_rate=48000 frame_size=720x576 frame_rate=25 gop_size=15 me_range=63

0:Custom:DVD VOB mp2 192 video 6500_8000::::avformat:PAL:vob:format=dvd aspect=4:3 vcodec=mpeg2video acodec=mp2 video_bit_rate=6500000 video_rc_max_rate=8000000 video_rc_min_rate=0 video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=10080000 audio_bit_rate=192000 audio_sample_rate=48000 frame_size=720x576 frame_rate=25 gop_size=15 me_range=63

..it is sooo frustrating :(
I tried several video and audio bitrate options, several audio codecs, checked it back in mplayer, but all the same. No change even in intensity or type of jerkiness.
This leads me to assumption that this problem is NOT related to video or audio bitrate.

So what is left?

gop_size=15   ??
me_range=63 ?? (google hints that many use 0 as a value here)
video_rc_buffer_size=1835008 mux_packet_size=2048 mux_rate=10080000 ..don't have a clue what is this about

I still use 0.4 version with upgraded mtl 0.2.3 lib, all from SUSE Pacman repo.

IS THERE ANYONE WHO SUCCESSFULLY RENDERED A DVD PLAYABLE PAL VIDEO? Please, let me know
Thank you.

Jan

>
>Hi Jan,
>
>This mail contains a lot of assumptions, I'm not sure here.
>I start with something more about the audio options for DVD streams.
>The standards are:
>
>    * PCM: 48 kHz or 96 kHz sampling rate, 16 bit or 24 bit L-PCM, 2 to
>      6 channels, up to 6144 kbit/s <http://en.wikipedia.org/wiki/Kbit/s>
>    * AC-3: 48 kHz sampling rate, 1 to 5.1 (6) channels, up to 448 kbit/s
>    * DTS: 48 kHz or 96 kHz sampling rate, 2 to 6.1 channels, Half Rate
>      (768 kbit/s) or Full Rate (1536 kbit/s)
>    * MP2: 48 kHz sampling rate, 1 to 7.1 channels, up to 912 kbit/s
>
>Most encoders I have worked with, both on linux and windows, use for AC3
encoding a bitrate of 384 or (almost the default) 448 kbit/s and for mp2
(mpeg) mostly 192 kbit/s.
>I saw from the exports.profile file (in
/usr/share/apps/kdenlive/profiles) that kdenlive uses AC3 encoding with
"only" 192 kbit/s (which makes my answer not correct in my previous mail).
>You could try some custom option for export/render in kdenlive, or modify
the line in the exports.profile
>:HQ:DVD:PAL:::avformat:PAL:vob:format=dvd aspect=4:3 vcodec=mpeg2video
acodec=ac3 video_bit_rate=6500000 video_rc_max_rate=8000000
video_rc_min_rate=0 video_rc_buffer_size=1835008 mux_packet_size=2048
mux_rate=10080000 audio_bit_rate=192000 audio_sample_rate=48000
frame_size=720x576 frame_rate=25 gop_size=15 me_range=63
>
>You could change the acodec=ac3 into acodec=mp3, leaving the
audio_bit_rate=192000 as it is
>or
>leave the acodec=ac3 and change the audio bitrate to
audio_bit_rate=448000
>
>A friend of mine, but also I myself once had dvd-players which had
difficulties playing DVD's with other settings that the defaults, even
though the DVD-standard itself allows them. Obviously the build-in
decoding used to much processing power on these non-standard streams.
Please try the default settings for Kdenlive.
>
>Kind regards,
>Harry
>
>
>
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