Re: [vdr] How to convert a JPEG image to an HD video frame?
On 24.07.2011 20:07, André Weidemann wrote: Hi Klaus, On 23.07.2011 16:57, Klaus Schmidinger wrote: The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? I have not used mpeg2enc at all. I usually use convert from ImageMagick and ffmpeg to convert things. You might want to give those two a try. Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 -y $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. Thanks, that was a great help! I found this command to work pretty good: ffmpeg -i /tmp/test.jpg -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg It generates a decently sized TS file (some 100-200 KB) that can be displayed with the dvbhddevice plugin on a TT-S2 6400. Now I wanted to pipe the output of the convert command into ffmpeg (to avoid the temporary file), but that doesn't seem to work: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 - | ffmpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg gives me ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' --enable-debug --disable-stripping --enable-libgsm --enable-libschroedinger --enable-libdirac --enable-avfilter --enable-libvpx --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libdc1394 --enable-pthreads --enable-librtmp libavutil51. 9. 1 / 51. 9. 1 libavcodec 53. 7. 0 / 53. 7. 0 libavformat 53. 4. 0 / 53. 4. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 23. 0 / 2. 23. 0 libswscale2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mp3 @ 0x807bb00] Format mp3 detected only with low score of 1, misdetection possible! [mp3 @ 0x807d900] Header missing Last message repeated 1 times [mp3 @ 0x807bb00] Could not find codec parameters (Audio: mp1, 0 channels, s16) [mp3 @ 0x807bb00] Estimating duration from bitrate, this may be inaccurate pipe:0: could not find codec parameters Am I doing something wrong here? Klaus ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] How to convert a JPEG image to an HD video frame?
Hi Klaus, On 14.08.2011 12:47, Klaus Schmidinger wrote: On 24.07.2011 20:07, André Weidemann wrote: Hi Klaus, On 23.07.2011 16:57, Klaus Schmidinger wrote: The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? I have not used mpeg2enc at all. I usually use convert from ImageMagick and ffmpeg to convert things. You might want to give those two a try. Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 -y $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. Thanks, that was a great help! I found this command to work pretty good: ffmpeg -i /tmp/test.jpg -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg It generates a decently sized TS file (some 100-200 KB) that can be displayed with the dvbhddevice plugin on a TT-S2 6400. Now I wanted to pipe the output of the convert command into ffmpeg (to avoid the temporary file), but that doesn't seem to work: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 - | ffmpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg gives me ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' --enable-debug --disable-stripping --enable-libgsm --enable-libschroedinger --enable-libdirac --enable-avfilter --enable-libvpx --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libdc1394 --enable-pthreads --enable-librtmp libavutil 51. 9. 1 / 51. 9. 1 libavcodec 53. 7. 0 / 53. 7. 0 libavformat 53. 4. 0 / 53. 4. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 23. 0 / 2. 23. 0 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mp3 @ 0x807bb00] Format mp3 detected only with low score of 1, misdetection possible! [mp3 @ 0x807d900] Header missing Last message repeated 1 times [mp3 @ 0x807bb00] Could not find codec parameters (Audio: mp1, 0 channels, s16) [mp3 @ 0x807bb00] Estimating duration from bitrate, this may be inaccurate pipe:0: could not find codec parameters Please try the following: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 jpg:- | ffmpeg -f mjpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg André ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] How to convert a JPEG image to an HD video frame?
On 14.08.2011 13:43, André Weidemann wrote: Hi Klaus, On 14.08.2011 12:47, Klaus Schmidinger wrote: On 24.07.2011 20:07, André Weidemann wrote: Hi Klaus, On 23.07.2011 16:57, Klaus Schmidinger wrote: The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? I have not used mpeg2enc at all. I usually use convert from ImageMagick and ffmpeg to convert things. You might want to give those two a try. Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 -y $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. Thanks, that was a great help! I found this command to work pretty good: ffmpeg -i /tmp/test.jpg -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg It generates a decently sized TS file (some 100-200 KB) that can be displayed with the dvbhddevice plugin on a TT-S2 6400. Now I wanted to pipe the output of the convert command into ffmpeg (to avoid the temporary file), but that doesn't seem to work: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 - | ffmpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg gives me ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' --enable-debug --disable-stripping --enable-libgsm --enable-libschroedinger --enable-libdirac --enable-avfilter --enable-libvpx --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libdc1394 --enable-pthreads --enable-librtmp libavutil 51. 9. 1 / 51. 9. 1 libavcodec 53. 7. 0 / 53. 7. 0 libavformat 53. 4. 0 / 53. 4. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 23. 0 / 2. 23. 0 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mp3 @ 0x807bb00] Format mp3 detected only with low score of 1, misdetection possible! [mp3 @ 0x807d900] Header missing Last message repeated 1 times [mp3 @ 0x807bb00] Could not find codec parameters (Audio: mp1, 0 channels, s16) [mp3 @ 0x807bb00] Estimating duration from bitrate, this may be inaccurate pipe:0: could not find codec parameters Please try the following: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 jpg:- | ffmpeg -f mjpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg This results in a rather blurry image, and I get the following messages: x264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y x3.mp4 ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
Re: [vdr] How to convert a JPEG image to an HD video frame?
Hi Klaus, On 14.08.2011 14:17, Klaus Schmidinger wrote: On 14.08.2011 13:43, André Weidemann wrote: Hi Klaus, On 14.08.2011 12:47, Klaus Schmidinger wrote: On 24.07.2011 20:07, André Weidemann wrote: Hi Klaus, On 23.07.2011 16:57, Klaus Schmidinger wrote: The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? I have not used mpeg2enc at all. I usually use convert from ImageMagick and ffmpeg to convert things. You might want to give those two a try. Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 -y $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. Thanks, that was a great help! I found this command to work pretty good: ffmpeg -i /tmp/test.jpg -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg It generates a decently sized TS file (some 100-200 KB) that can be displayed with the dvbhddevice plugin on a TT-S2 6400. Now I wanted to pipe the output of the convert command into ffmpeg (to avoid the temporary file), but that doesn't seem to work: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 - | ffmpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg gives me ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gsm' --enable-debug --disable-stripping --enable-libgsm --enable-libschroedinger --enable-libdirac --enable-avfilter --enable-libvpx --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libdc1394 --enable-pthreads --enable-librtmp libavutil 51. 9. 1 / 51. 9. 1 libavcodec 53. 7. 0 / 53. 7. 0 libavformat 53. 4. 0 / 53. 4. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 23. 0 / 2. 23. 0 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mp3 @ 0x807bb00] Format mp3 detected only with low score of 1, misdetection possible! [mp3 @ 0x807d900] Header missing Last message repeated 1 times [mp3 @ 0x807bb00] Could not find codec parameters (Audio: mp1, 0 channels, s16) [mp3 @ 0x807bb00] Estimating duration from bitrate, this may be inaccurate pipe:0: could not find codec parameters Please try the following: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 jpg:- | ffmpeg -f mjpeg -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg This results in a rather blurry image, and I get the following messages: x264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y x3.mp4 ffmpeg version 0.8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 23 2011 09:35:04 with gcc 4.5.1 20101208 [gcc-4_5-branch revision 167585] configuration: --shlibdir=/usr/lib --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib --enable-shared --disable-static --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --extra-cflags='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall
Re: [vdr] How to convert a JPEG image to an HD video frame?
On 14.08.2011 15:31, André Weidemann wrote: ... After reading the ffmpeg man page again I came up with the following line: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 ppm:- | ffmpeg -f image2pipe -vcodec ppm -i pipe:0 -an -vcodec libx264 -vpre baseline -s 1920x1080 -qscale 2 -f mpegts -y $Mpeg I used ppm, because this was the only format ffmpeg and convert could agree upon after several attempts. Thanks a lot - works fine now! Klaus ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] How to convert a JPEG image to an HD video frame?
On 24.07.2011 21:07, André Weidemann wrote: Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg Note that -f mp4 means the output is not raw mpeg-4/H.264 but in the mp4 file format. For raw video (like mpeg2video in your first example), for MPEG-4 one can use -f m4v and for H.264 -f h264. The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. If you want a 10 second video at 25 fps, you can do it like this: ffmpeg -loop_input -t 10 -r 25 -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg You may want to adjust the number of threads according to the number of cores in your machine. André ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr -- Anssi Hannula ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] How to convert a JPEG image to an HD video frame?
Am 23.07.2011 16:57, schrieb Klaus Schmidinger: jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. I've played around with this a bit, but it seems as if at least my mpeg2enc (1:1.9.0-0.7, debian-multimedia.org) doesn't like HD resolutions. It has some support for ATSC HD (-f 13), but then doesn't like european frame rates. Best chances are probably to find some other encoder that accepts an 420mpeg2 pipe as input and can encode HD mpeg2 or h264 out of it. Cheers, Udo ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
Re: [vdr] How to convert a JPEG image to an HD video frame?
Hi Klaus, On 23.07.2011 16:57, Klaus Schmidinger wrote: The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? I have not used mpeg2enc at all. I usually use convert from ImageMagick and ffmpeg to convert things. You might want to give those two a try. Here are two simple lines to convert a jpg image to mpeg2: convert $Pict -background '#00' -resize 1920x1080 -gravity center -extent 1920x1080 /tmp/test.jpg ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg2video -b 2500 -s 1920x1080 -qscale 2 -f mpeg2video $Mpeg Note: Depending on your distro, ffmpeg may not support mpeg2 video encoding. For mpeg4 the ffmpeg line looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg For libx264 it looks like this: ffmpeg -i /tmp/temp.jpg -an -vcodec libx264 -vpre lossless_ultrafast -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg The -vpre parameter requires a preset. They can usually be found under /usr/share/ffmpeg/libx264-*.ffpreset. If you want a 10 second video at 25 fps, you can do it like this: ffmpeg -loop_input -t 10 -r 25 -i /tmp/temp.jpg -an -vcodec mpeg4 -b 2500 -s 1920x1080 -qscale 2 -threads 4 -f mp4 $Mpeg You may want to adjust the number of threads according to the number of cores in your machine. André ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
[vdr] How to convert a JPEG image to an HD video frame?
The VDR plugin 'pictures' (part of the original VDR archive) uses a Perl script named 'pic2mpg', which converts a JPEG image into an MPEG frame that can be displayed directly by VDR's primary output device. This is done in essence by the command sequence jpegtopnm $Pict | pnmscale --xscale=$ScaleW --yscale=$ScaleH | pnmpad --black --width $SW --height $SH | ppmtoy4m -F $framerate -I p -S 420mpeg2 | mpeg2enc -f 3 -b 12500 -a $aspect -q 1 -n $system2 -o $Mpeg (see the actual script for the complete working environment). While this works fine for SD video, I can't seen to figure out how to make this work for an HD video output device. The video frame should be a 1080i frame in my case (my tv can't handle 1080p), but could optionally also be 720p or 1080p, depending on the actual tv's capabilities. Can anybody give me a pointer how this script could generate HD video frames? Klaus ___ vdr mailing list vdr@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
