February 2012 - MEncoder-users - lists.mplayerhq.hu

change frame rate
by Shiyuan 28 Feb '14

28 Feb '14

Hi, I have an avi video with 5000 frames. The original frame rate is 15 frames/per second, and it takes 300 seconds to play the whole video. I want the video to play faster so that it takes less time to complete, so I change the frame rate using the following command: mencoder in.avi -o out.avi -ofps 100 -ovc copy However, out.avi still take around 300 seconds to complete, even though out.avi does have fps of 100fps according to the info displayed by mplayer. What command options should I use if I want the output video to be complete in 50 sec? Thanks. Shiyuan

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Help with mencoder
by JD 27 Apr '13

27 Apr '13

Hi, I wanted to combine 12 flash video files (from youtube) into a single avi file. So I did cat at Zachar*.flv > Zach_all.flv $ mencoder Zach_all.flv -o Zach_all.avi -forceidx -ovc copy -oac pcm The output shows skipping frames, and missing aspect information, as you see below. What do I need to do to fix that, so thet when I am transcoding into .avi, I do not get these skips and missing aspect info? MEncoder SVN-r31628-4.4.5 (C) 2000-2010 MPlayer Team success: format: 0 data: 0x0 - 0x8378f0a libavformat file format detected. [flv @ 0x92d07a0] Estimating duration from bitrate, this may be inaccurate [lavf] stream 0: video (h264), -vid 0 [lavf] stream 1: audio (aac), -aid 0 VIDEO: [H264] 480x270 0bpp 29.917 fps 119.2 kbps (14.5 kbyte/s) [V] filefmt:44 fourcc:0x34363248 size:480x270 fps:29.917 ftime:=0.0334 ========================================================================== Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding) AUDIO: 44100 Hz, 2 ch, s16le, 49.5 kbit/3.51% (ratio: 6184->176400) Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio)) ========================================================================== videocodec: framecopy (480x270 0bpp fourcc=34363248) Writing header... ODML: Aspect information not (yet?) available or unspecified, not writing vprp header. Writing header... ODML: Aspect information not (yet?) available or unspecified, not writing vprp header. Pos: 0.7s 21f ( 0%) 14.38fps Trem: 0min 0mb A-V:0.067 [0:1411] Skipping frame! Pos: 1.1s 33f ( 0%) 18.45fps Trem: 0min 0mb A-V:0.068 [150:1411] Skipping frame! Pos: 6.0s 182f ( 0%) 38.81fps Trem: 65min 1014mb A-V:0.067 [148:1411] Skipping frame! Pos: 23.5s 706f ( 0%) 43.90fps Trem: 70min 1142mb A-V:0.067 [106:1411] Skipping frame! Pos: 38.4s 1153f ( 0%) 44.83fps Trem: 68min 1147mb A-V:0.067 [113:1411] Skipping frame! Pos: 57.4s 1723f ( 0%) 44.84fps Trem: 66min 1117mb A-V:0.068 [124:1411] Skipping frame! Pos: 76.9s 2306f ( 1%) 44.36fps Trem: 65min 1089mb A-V:0.067 [128:1411] Skipping frame! Pos: 98.4s 2950f ( 1%) 44.17fps Trem: 65min 1092mb A-V:0.067 [126:1411] Skipping frame! Pos: 117.5s 3522f ( 1%) 43.68fps Trem: 65min 1086mb A-V:0.067 [128:1411] Skipping frame! Pos: 132.5s 3972f ( 2%) 43.76fps Trem: 66min 1092mb A-V:0.067 [127:1411] Skipping frame! Pos: 153.7s 4608f ( 2%) 44.14fps Trem: 66min 1104mb A-V:0.067 [126:1411] Skipping frame! Pos: 173.1s 5190f ( 2%) 43.84fps Trem: 68min 1133mb A-V:0.067 [120:1411] Skipping frame! Pos: 190.3s 5705f ( 3%) 44.08fps Trem: 67min 1122mb A-V:0.067 [121:1411] Skipping frame! Pos: 211.7s 6347f ( 3%) 43.80fps Trem: 66min 1114mb A-V:0.068 [124:1411] Skipping frame! Pos: 228.7s 6856f ( 3%) 43.84fps Trem: 66min 1113mb A-V:0.067 [124:1411] Skipping frame! Pos: 248.1s 7436f ( 4%) 44.06fps Trem: 65min 1110mb A-V:0.067 [125:1411] Skipping frame! Pos: 265.3s 7954f ( 4%) 43.82fps Trem: 66min 1120mb A-V:0.067 [123:1411] Skipping frame!

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Help with MPG video encoding
by Walter Belhaven 20 Apr '13

20 Apr '13

Hi, I've got a question on how to get the best possible MPG encoding of a movie source, "at any price" so to speak -- i.e., as many bits as the encoder needs to get the highest possible video quality. It appears to me that the MPG encoding process is introducing artifacts that are present regardless of the amount of "free reign" I give to the encoder with respect to quantization, bitrate, and the like. My bottom line question is thus: "Are these artifacts inherent in MPG encoding, or am I just not twiddling the knobs and dials on the encoder correctly?" Here's all the details ... My source is a mixed hard- and soft-telecined "movie" at 1080/60i that I'm trying to tanscode to 480/24p, soft telecined to 480/60i, for ultimate burning to an NTSC DVD-Video. When I use mencoder to inverse telecine, crop out the crud, expand back to the original letterbox ratio (it's 2.35:1, not 16/9), and 'encode' the video with HUFFYUV (422P), the resulting video looks stunning, with no 'blocking' artifacts to speak of. This, of course, is as expected. But when I encode the video in MPG2 or MPG4, even with vqscale=1 or vqscale=2, I see sometimes severe blocking in the resulting video. Is this because the chroma is being subsampled vertically and horizontally (4:2:0), or is it because 'vqscale' is (perhaps necessary but) not sufficient to get "maximum quality at any price" encoding? Thanks, WB ____________________________________________________________________________________ Be a PS3 game guru. Get your game face on with the latest PS3 news and previews at Yahoo! Games. http://videogames.yahoo.com/platform?platform=120121

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Questions about fps and synch for vintage QuickTime movies
by Mike Spreitzer 02 Mar '12

02 Mar '12

I am retiring some old computer equipment, and want to transcode some old QuickTime movies into a modern format. These movies were found on removable media with dates in the spring of 1996. I think they were made on my PowerMac 7500/100, on those dates or not many years before. That would be with System 7.5.something. I think I made them using some standard recording software of such Macs. I think the video source was a S-VHS camcorder, connected to the Mac via a S-video cable; the audio came in through the Mac's microphone or an external microphone. In Mac filesystem terms, these movies have type/creator of MooV/ttxt. Each has a small resource fork, containing just one resource (of type MooV), and a large data fork. I have copied these files to modern systems, losing the resource fork along the way. I can play them with mplayer and QuickTime 7 on Windows Vista and MacOS 10.6 (also the current QuickTime on MacOS 10). Oddly, mplayer and QuickTime disagree about the frame rate. I will discuss one example movie. On both MacOS 10 and Windows Vista, QuickTime 7's inspector says the movie's frame rate is 27.16. On both MacOS 10 and Windows Vista, mplayer says the movie's frame rate is 30.00. In all four cases, when I play the move the sound and video are in sync. I used a stopwatch to time the playback time between two events in the movie (it is short), and got the same amount (33 seconds) in each of those four cases. Why are these two pieces of software making different claims about FPS? When I try to transcode, using mencode, the sound and video get out of sync. I am guessing that understanding what is going on with the source will help. Thanks, Mike

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Encoding animation without shuttering
by Tomasz Jamroszczak 21 Feb '12

21 Feb '12

Hello. I'm new on this list, and new to video encoding. However I'm responsible for a presentation of some animations, and every now and then I need to encode something. Recently I've received 6 minutes animation weighting 5GB, in 900x600 resolution, but the animation is quite static. What's funny, it does look good when played with Media Player Classic. Mplayer can play only two seconds, then stops. I need to make the file smaller. I managed to encode it to 76MB, but the problem is, I'm experiencing jittering during scene switch (fade-in, fade-out) and scrolling of whole view. Size is not that important (well, it can't be 1GB/s), but I really need smooth video. I'd rather like not to have compression artifacts. My encoding options are following: mencoder in.mov -o out.avi -ovc x264 -x264encopts subq=9:crf=21:keyint=250:partitions=all:8x8dct:me=umh:frameref=5:bframes=5:weight_b:deblock=1,1:cabac:qp_min=18:qp_max=51:ip_factor=1.4:pb_factor=1.4:qcomp=0.6:direct_pred=auto:me_range=16:chroma_me:mixed_refs:trellis=2:deadzone_inter=21:deadzone_intra=11:nofast_pskip:dct_decimate:nr=0:nointerlaced:psnr:ref=10 -oac pcm I have to admit, I don't understand most of the options. What can I do, to encode non-choppy video? tj.

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How to transcode MTS files recorded by Panasonic HDC-SD100 camera?
by Marton Sigmond 19 Feb '12

19 Feb '12

Hi, I would like to transcode my MTS files recorded with my Panasonic HDC-SD100 camera. The command that works so far is this: ffmpeg -y -i %in -threads 4 -deinterlace -f mpegts -r 25 -vcodec mpeg2video -s vga -aspect 16:9 -maxrate 1800k -b 1500k -qmin 3 -qmax 5 -buf\ size 4096k -mbd 2 -bf 2 -flags +4mv -trellis -aic -cmp 2 -subcmp 2 -g 300 -acodec libmp3lame -ar 48000 -ab 128k -ac 2 %out However since I would like to serve this from a Mediatomb UPnP instance, it needs to be transcoded with at least 25 FPS. On my 4 core 2.6 GHz server the transcoding happens with ~13 FPS. Is it possible to speed this up? Does mencoder have a better/faster alternative for the above line? Thanks and regards, Marton

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(no subject)
by Norbert White 16 Feb '12

16 Feb '12

http://blog.shimlaproperties.com/wp-content/themes/default/photos.php?cake5…

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Problem in mencodering one TS video
by zhu shi song 10 Feb '12

10 Feb '12

(1) Mencoder Version: MEncoder SVN-r34573-4.4.4 (C) 2000-2012 MPlayer Team (2) Video Format: MPEG4 encoded in TS format (3) Mencoder Command: mencoder -ss 13 -endpos 15 -nosound -ovc copy -of lavf -lavfopts format=ts -o outts.ts sgvideo.ts (4) Problem: When playing result video 'outts.ts', first 0s frame of source video sgvideo.ts was displayed for about one second(this part is not correct), then began to play from 13s of source video(this part is correct). If needed , I can upload my source video and resulted video. But I don't know where I should upload the video files.

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Video format conversion: ffvp6f -> ffflv (?).
by rvclayton＠verizon.net 10 Feb '12

10 Feb '12

I'm trying to get flv videos to work on a coby mp815 digital media player. I have one file the coby can show $ mplayer -identify -frames 0 good.flv 2>&1 | grep -i codec Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 53.54.100 (internal) Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video) ID_VIDEO_CODEC=ffflv Requested audio codec family [mpg123] (afm=mpg123) not available. Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio) ID_AUDIO_CODEC=ffmp3float $ and another it can't (format error) $ mplayer -identify -frames 0 bad.flv 2>&1 | grep -i codec Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 53.54.100 (internal) Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash) ID_VIDEO_CODEC=ffvp6f Requested audio codec family [mpg123] (afm=mpg123) not available. Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio) ID_AUDIO_CODEC=ffmp3float $ I'm guessing wildly that the problem is ffvp6f vs ffflv, and I can't figure out how to convert from the former to the latter, or even what codec to try $ mencoder -ovc help MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team Available codecs: copy - frame copy, without re-encoding. Doesn't work with filters. frameno - special audio-only file for 3-pass encoding, see DOCS. raw - uncompressed video. Use fourcc option to set format explicitly. nuv - nuppel video lavc - libavcodec codecs - best quality! vfw - VfW DLLs, read DOCS/HTML/en/encoding-guide.html. qtvideo - QuickTime DLLs, currently only SVQ1/3 are supported. libdv - DV encoding with libdv v0.9.5 xvid - XviD encoding x264 - H.264 encoding $ What is the magic I need to invoke to go from ffvp6f to ffflv? Is this even the right track? This is on debian testing updated weekly, if that's important. Here are the gory details for those really into it: $ mplayer -identify -frames 0 good.flv Failed to read /etc/mplayer/mplayer.conf.local: No such file or directory Warning unknown option include at line 171 MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team Can't open joystick device /dev/input/js0: No such file or directory Can't init input joystick mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing good.flv. libavformat version 53.29.100 (internal) libavformat file format detected. ID_VIDEO_ID=0 [lavf] stream 0: video (flv), -vid 0 ID_AUDIO_ID=0 [lavf] stream 1: audio (mp3), -aid 0 VIDEO: [FLV1] 400x224 0bpp 29.917 fps 256.0 kbps (31.2 kbyte/s) Clip info: starttime: 0 ID_CLIP_INFO_NAME0=starttime ID_CLIP_INFO_VALUE0=0 totalduration: 400 ID_CLIP_INFO_NAME1=totalduration ID_CLIP_INFO_VALUE1=400 totaldatarate: 316 ID_CLIP_INFO_NAME2=totaldatarate ID_CLIP_INFO_VALUE2=316 bytelength: 15808286 ID_CLIP_INFO_NAME3=bytelength ID_CLIP_INFO_VALUE3=15808286 canseekontime: true ID_CLIP_INFO_NAME4=canseekontime ID_CLIP_INFO_VALUE4=true sourcedata: BADC20742MM1328629100888801 ID_CLIP_INFO_NAME5=sourcedata ID_CLIP_INFO_VALUE5=BADC20742MM1328629100888801 purl: ID_CLIP_INFO_NAME6=purl ID_CLIP_INFO_VALUE6= pmsg: ID_CLIP_INFO_NAME7=pmsg ID_CLIP_INFO_VALUE7= ID_CLIP_INFO_N=8 Load subtitles in ./ ID_FILENAME=good.flv ID_DEMUXER=lavfpref ID_VIDEO_FORMAT=FLV1 ID_VIDEO_BITRATE=255968 ID_VIDEO_WIDTH=400 ID_VIDEO_HEIGHT=224 ID_VIDEO_FPS=29.917 ID_VIDEO_ASPECT=0.0000 ID_AUDIO_FORMAT=85 ID_AUDIO_BITRATE=64000 ID_AUDIO_RATE=22050 ID_AUDIO_NCH=2 ID_START_TIME=0.00 ID_LENGTH=400.01 ID_SEEKABLE=1 ID_CHAPTERS=0 ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 53.54.100 (internal) Selected video codec: [ffflv] vfm: ffmpeg (FFmpeg Flash video) ========================================================================== ID_VIDEO_CODEC=ffflv ========================================================================== Requested audio codec family [mpg123] (afm=mpg123) not available. Enable it at compilation. Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders AUDIO: 22050 Hz, 2 ch, floatle, 64.0 kbit/4.54% (ratio: 8000->176400) ID_AUDIO_BITRATE=64000 ID_AUDIO_RATE=22050 ID_AUDIO_NCH=2 Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio) ========================================================================== AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample) ID_AUDIO_CODEC=ffmp3float Starting playback... Exiting... (End of file) ID_EXIT=EOF $ mplayer -identify -frames 0 bad.flv Failed to read /etc/mplayer/mplayer.conf.local: No such file or directory Warning unknown option include at line 171 MPlayer SVN-r34531 (C) 2000-2010 MPlayer Team Can't open joystick device /dev/input/js0: No such file or directory Can't init input joystick mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing bad.flv. libavformat version 53.29.100 (internal) libavformat file format detected. ID_VIDEO_ID=0 [lavf] stream 0: video (vp6f), -vid 0 ID_AUDIO_ID=0 [lavf] stream 1: audio (mp3), -aid 0 VIDEO: [VP6F] 640x480 0bpp 29.970 fps 397.9 kbps (48.6 kbyte/s) Clip info: metadatacreator: Yet Another Metadata Injector for FLV - Version 1.4 ID_CLIP_INFO_NAME0=metadatacreator ID_CLIP_INFO_VALUE0=Yet Another Metadata Injector for FLV - Version 1.4 hasKeyframes: true ID_CLIP_INFO_NAME1=hasKeyframes ID_CLIP_INFO_VALUE1=true hasVideo: true ID_CLIP_INFO_NAME2=hasVideo ID_CLIP_INFO_VALUE2=true hasAudio: true ID_CLIP_INFO_NAME3=hasAudio ID_CLIP_INFO_VALUE3=true hasMetadata: true ID_CLIP_INFO_NAME4=hasMetadata ID_CLIP_INFO_VALUE4=true canSeekToEnd: true ID_CLIP_INFO_NAME5=canSeekToEnd ID_CLIP_INFO_VALUE5=true datasize: 78346577 ID_CLIP_INFO_NAME6=datasize ID_CLIP_INFO_VALUE6=78346577 videosize: 69094725 ID_CLIP_INFO_NAME7=videosize ID_CLIP_INFO_VALUE7=69094725 audiosize: 8875104 ID_CLIP_INFO_NAME8=audiosize ID_CLIP_INFO_VALUE8=8875104 lasttimestamp: 1380 ID_CLIP_INFO_NAME9=lasttimestamp ID_CLIP_INFO_VALUE9=1380 lastkeyframetimestamp: 1380 ID_CLIP_INFO_NAME10=lastkeyframetimestamp ID_CLIP_INFO_VALUE10=1380 lastkeyframelocation: 78358329 ID_CLIP_INFO_NAME11=lastkeyframelocation ID_CLIP_INFO_VALUE11=78358329 ID_CLIP_INFO_N=12 Load subtitles in ./ ID_FILENAME=bad.flv ID_DEMUXER=lavfpref ID_VIDEO_FORMAT=VP6F ID_VIDEO_BITRATE=397920 ID_VIDEO_WIDTH=640 ID_VIDEO_HEIGHT=480 ID_VIDEO_FPS=29.970 ID_VIDEO_ASPECT=0.0000 ID_AUDIO_FORMAT=85 ID_AUDIO_BITRATE=48000 ID_AUDIO_RATE=22050 ID_AUDIO_NCH=1 ID_START_TIME=0.00 ID_LENGTH=1379.97 ID_SEEKABLE=1 ID_CHAPTERS=0 ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 53.54.100 (internal) Selected video codec: [ffvp6f] vfm: ffmpeg (FFmpeg VP6 Flash) ========================================================================== ID_VIDEO_CODEC=ffvp6f ========================================================================== Requested audio codec family [mpg123] (afm=mpg123) not available. Enable it at compilation. Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders AUDIO: 22050 Hz, 1 ch, floatle, 48.0 kbit/6.80% (ratio: 6000->88200) ID_AUDIO_BITRATE=48000 ID_AUDIO_RATE=22050 ID_AUDIO_NCH=1 Selected audio codec: [ffmp3float] afm: ffmpeg (FFmpeg MPEG layer-3 audio) ========================================================================== AO: [alsa] 48000Hz 1ch floatle (4 bytes per sample) ID_AUDIO_CODEC=ffmp3float Starting playback... Exiting... (End of file) ID_EXIT=EOF $

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Re: [MEncoder-users] Video format conversion: ffvp6f -> ffflv (?).
by Gabri Nurtinaz Shally 08 Feb '12

08 Feb '12

can you put your encoding command line? have you try something like: mencoder input.avi -o output.flv -of lavf \ -oac mp3 lame -lameopts abr: br=56 -srate 22050 -ovc lavc \ -lavcopts vcodec=flv :vbitrate=500: mbd=2:mv0 :trell:v4mv: cbp:last_pred= 3 you can view the documentation online here: www.mplayerhq.hu/DOCS/HTML/en/menc-feat-selecting-codec.html On Feb 8, 2012 2:20 AM, "R. Clayton" <rvclayton(a)verizon.net> wrote:

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