February 2014 - ffmpeg-user - lists.ffmpeg.org

x.265
by Levan Chelidze 19 Feb '14

19 Feb '14

I have a question and it will be a blast if someone will answer it. This gentleman has stated that x.265 encoder is integrated in ffmpeg since February 12th. http://stackoverflow.com/a/21853796 however my build of ffmpeg that I have compiled, notifies me (Unknown encoder 'libx265') So can someone kindly give my some information on this, If it is not too much trouble. Thank You for your time.

3 3

Cineform codec support?
by Andrey Aleksandrovich 19 Feb '14

19 Feb '14

Hello All! Is there way to read (decode) video with CineForm codec? http://en.wikipedia.org/wiki/CineForm

2 1

Latest source doesn't support filter_complex?
by zenicanin 19 Feb '14

19 Feb '14

I just upgraded to the latest version of ffmpeg and keep getting Unrecognized option 'filter_complex'. Is this option really deprecated or is there some other problem? -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Latest-source-doesn-t-support-filt… Sent from the FFmpeg-users mailing list archive at Nabble.com.

4 4

Unable to Retrieve codec_name from video stream codec context.
by whoami Jils 19 Feb '14

19 Feb '14

I am trying the below code: if (avformat_open_input(&pFormatCtx, "rtsp://<ip>:<port>/", NULL, NULL) != 0) { return -1; // Couldn't open file } vStream = -1; for (i = 0; i < pFormatCtx->nb_streams; i++) if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { vStream = i; break; } if (vStream == -1) return -1; // Didn't find a video stream // Get a pointer to the codec context for the video stream pCodecCtx = pFormatCtx->streams[videoStream]->codec; LOGD (" Codec Context Height %d Width %d Codec Name %s ", pCodecCtx->height, pCodecCtx->width, pCodecCtx->codec_name ); I get the output 0 0, and for codec_name nothing gets printed. due to this lots of other issues are raising, as i dont have proper value in it. It is expected behavior that stream may not have information ?

1 0

pts and dts role in video only streaming
by jai ganesh 19 Feb '14

19 Feb '14

I am new to SDL2.0 and I have a basic question. I have heared about pts(presenstation timestamp) and dts (decompression timestamp) of a frame in videos. And googling about it makes gives me meaning as if pts and dts are used only for synchronization between audio and video. But I am streaming only video and my question is whether dts and pts needs to be considered (in video streaming program) while streaming video alone?

3 2

Re: [FFmpeg-user] ffserver memory consumption
by ota sverma 19 Feb '14

19 Feb '14

ota sverma <ota.sverma <at> gmail.com> writes: >/ If a stop saveing or all clients are disconnected, />/ memory consumption is stoped but don`t free used />/ memory. / This sounds like a leak that you can probably find with valgrind (use a very, very small resolution). Carl Eugen I tried very small resolution and situation is same... Valgrind didn`t help... Any idea?

2 1

FFmpeg h264 decode error
by Manas Bhatnagar 19 Feb '14

19 Feb '14

Hello, I am calling ffmpeg through the following command: ffmpeg -i video.mkv -c:v libvpx -b:v 450k -c:a libvorbis -b:a 48k video.webm and I am seeing many errors being produced by the h264 codec. You may look at the output on pastebin: http://pastebin.com/EaFwWyKD It produces errors like these throughout the transcode, I have only included a few lines to let you see what is going on. This is a fairly recent build running on FreeBSD 9.2. Thanks, Manas

2 1

about flushing decoder at the end of file
by YIRAN LI 19 Feb '14

19 Feb '14

Hi friends, I know when av_read_frame(ctx, pkt) returns < 0 we can set pkt.data = NULL and pkt.size = 0 to flush any frames in decoder if the decoder has the CODEC_CAP_DELAY set. The example in src/doc/examples/demuxing.c does these while (av_read_frame(ctx, &pkt) >=0 ) { decode_packet(&got_frame, 0); av_free_packet() } pkt.data = NULL; pkt.size = 0; do { decode_packet(&got_frame, 1); } while (got_frame); so my question is how if both Audio and Video has something to flush? Because decode_packet() depends on pkt.stream_index to call audio or video decoder, but pkt.stream_index is set in the last call to av_read_frame, so it never changes in whole do {} while. My second question is how to flush all video frame quickly. Can I do this: while (av_read_frame(ctx, &pkt) >=0 ) { decode_packet(&got_frame, 0); av_free_packet() } // will it have problem if there're only audio frames wait to flush but no video frame // can I explicitly set pkt index to video and call decode_video? (I only want video frames) pkt.stream_index = video_index; pkt.data = NULL; pkt.size = 0; do { avcodec_decode_video2(,&got_frame,..); } while(got_frame) I set steam_index to video index because I'm afraid that pkt.stream_index may be the index of audio after return from av_read_frame(). Just imagine this case: when av_read_frame() returns < 0, there're audio frames wait to flush but no video frames left. Will my call to avcodec_decode_video2(,&got_frame,..) cause any crash? or it's guaranteed to return got_frame == false so that I know there's no video frame left? Great thanks!

1 0

slow performance with lut3d filter
by Elliott Balsley 18 Feb '14

18 Feb '14

I'm getting very slow performance with the lut3d filter. Is this normal, or is there some way to improve it? This test encode runs at 5fps, compared to the same operation without lut3d at 40fps. CPU usage is less than 10% during the whole encode. I'm using a 12 core Mac Pro. Source footage is ProRes 4444 from Arri Alexa camera. $ ffmpeg -i input.mov -vf lut3d=file=/Users/dit/LogCto709.dat test4.mov ffmpeg version N-57394-gea9632b Copyright (c) 2000-2013 the FFmpeg developers built on Oct 24 2013 11:58:12 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn) configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-static --enable-libass --enable-libbluray --enable-libfdk-aac --enable-libmp3lame --enable-libvpx --enable-libx264 --enable-opencl --enable-libfreetype --disable-shared --enable-libopenjpeg --enable-libvorbis --enable-libtheora libavutil 52. 47.101 / 52. 47.101 libavcodec 55. 38.101 / 55. 38.101 libavformat 55. 19.104 / 55. 19.104 libavdevice 55. 5.100 / 55. 5.100 libavfilter 3. 89.100 / 3. 89.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt ARRI creation_time : 2014-02-11 19:27:14 timecode : 03:16:55:05 Duration: 00:00:08.38, start: 0.000000, bitrate: 398876 kb/s Stream #0:0(eng): Video: prores (ap4h / 0x68347061), yuv444p10le, 2048x1152, 315153 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23976 tbn, 23976 tbc (default) Metadata: creation_time : 2014-02-11 19:27:14 handler_name : Apple Alias Data Handler Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default) Metadata: creation_time : 2014-02-11 19:27:14 handler_name : Apple Alias Data Handler timecode : 03:16:55:05 [swscaler @ 0x7ff214801600] full chroma interpolation for destination format 'rgb48le' not yet implemented No pixel format specified, yuv444p for H.264 encoding chosen. Use -pix_fmt yuv420p for compatibility with outdated media players. [libx264 @ 0x7ff213804200] using SAR=1/1 [libx264 @ 0x7ff213804200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264 @ 0x7ff213804200] profile High 4:4:4 Predictive, level 5.0, 4:4:4 8-bit [libx264 @ 0x7ff213804200] 264 - core 138 r2358 9e941d1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=36 lookahead_threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mov, to 'test4.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt ARRI timecode : 03:16:55:05 encoder : Lavf55.19.104 Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 2048x1152 [SAR 1:1 DAR 16:9], q=-1--1, 11988 tbn, 23.98 tbc (default) Metadata: creation_time : 2014-02-11 19:27:14 handler_name : Apple Alias Data Handler Stream mapping: Stream #0:0 -> #0:0 (prores -> libx264) Press [q] to stop, [?] for help frame= 201 fps=4.8 q=-1.0 Lsize= 2404kB time=00:00:08.29 bitrate=2372.4kbits/s video:2400kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.155687% [libx264 @ 0x7ff213804200] frame I:1 Avg QP:22.17 size:352961 [libx264 @ 0x7ff213804200] frame P:54 Avg QP:22.96 size: 27005 [libx264 @ 0x7ff213804200] frame B:146 Avg QP:26.23 size: 4421 [libx264 @ 0x7ff213804200] consecutive B-frames: 0.5% 5.0% 9.0% 85.6% [libx264 @ 0x7ff213804200] mb I I16..4: 4.8% 69.3% 25.9% [libx264 @ 0x7ff213804200] mb P I16..4: 4.3% 3.6% 0.3% P16..4: 43.7% 8.3% 6.7% 0.0% 0.0% skip:33.1% [libx264 @ 0x7ff213804200] mb B I16..4: 0.7% 0.6% 0.0% B16..8: 26.6% 0.6% 0.1% direct: 0.4% skip:70.9% L0:40.2% L1:59.1% BI: 0.7% [libx264 @ 0x7ff213804200] 8x8 transform intra:47.5% inter:80.8% [libx264 @ 0x7ff213804200] coded y,u,v intra: 34.7% 15.5% 22.5% inter: 5.2% 1.5% 4.1% [libx264 @ 0x7ff213804200] i16 v,h,dc,p: 18% 21% 6% 55% [libx264 @ 0x7ff213804200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 21% 21% 7% 5% 5% 6% 6% 9% [libx264 @ 0x7ff213804200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 22% 11% 5% 7% 7% 7% 6% 8% [libx264 @ 0x7ff213804200] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0x7ff213804200] ref P L0: 39.1% 10.0% 31.7% 19.2% [libx264 @ 0x7ff213804200] ref B L0: 74.9% 18.0% 7.2% [libx264 @ 0x7ff213804200] ref B L1: 86.2% 13.8% [libx264 @ 0x7ff213804200] kb/s:2344.41

2 6

What is the default format after decoding with
by whoami Jils 18 Feb '14

18 Feb '14

Hi, avcodec_decode_video2 is used to decode the packet, and results into AVFrame, and it sets the variable, if complete frame is received. What is the format of the frame after decoding?. it is same format as what the decoder does or it is a raw data buffer ?. Because i see in different places in the internet, that it is claimed that it is raw data. Which one i need to consider

2 1

Decoder flag "gray" seem to not work
by Andrey Utkin 18 Feb '14

18 Feb '14

This flag seems to be used in sources for mpeg4video and h264, but i cannot see its effect: By ffplay: ffplay -flags gray -i http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_480p_s… ffplay -flags gray -i http://ftp.nluug.nl/pub/graphics/blender/demo/movies/Sintel.2010.720p.mkv By ffmpeg with reencoding: ffmpeg -flags gray -i http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_480p_s… -vcodec libx264 -f mpegts - | ffplay - ffmpeg -flags gray -i http://ftp.nluug.nl/pub/graphics/blender/demo/movies/Sintel.2010.720p.mkv -vcodec libx264 -f mpegts - | ffplay - Any ideas? Is this option broken, or does it work another way, or do i do something wrong? -- Andrey Utkin

2 6

What do we do with the packet of video frame?
by whoami Jils 18 Feb '14

18 Feb '14

I often confused with what to deal with packets that are received from av_read_frame (). What do we can do with this packet? As per my understanding packet is part of the frame with encoded. avcodec_decode_video2 () does decoding and internally copies to the back buffer, which can be used to render to UI. Reference: dranger http://dranger.com/ffmpeg/

1 0

Do we need to go with DTS/PTS calculation if i need to display only video?
by whoami Jils 18 Feb '14

18 Feb '14

I am in the process of capturing video from IPed camera, and display to SDL. I followed dranger tutorial02.c, and it works fine for some mobile vendors[ex:samsung], and does not work in HTC. What i want to know is does DTS/PTS calcuation require if it is enough to capture only video?

1 0

Record framebuffer to an avi file.
by Ratheendran R 18 Feb '14

18 Feb '14

Hi all, I am using an imx6 based custom board which has inbuild overlay functionality,i.e we can overlay the video on to any graphical application. now we want to record such frame to avi file for analysis and future references. so can any one among the group have similar experience share on this platform. Thanks in Advance. Ratheendran

1 0

How to compile ffmpeg in QNX OS ?
by veni 18 Feb '14

18 Feb '14

I downloaded ffmpeg-2.1.1 and trying to compile in QNX OS. 1) # ./configure gcc is unable to create an executable file. If gcc is a cross-compiler, use the --enable-cross-compile option. Only do this if you know what cross compiling means. C compiler test failed. If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the ffmpeg-user(a)ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "config.log" produced by configure as this will help solving the problem. What are the setting i need to provide to compile it to QNX OS. Thanks -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/How-to-compile-ffmpeg-in-QNX-OS-tp… Sent from the FFmpeg-users mailing list archive at Nabble.com.

4 5

File rotation (like LOG files!)
by Podium B.V. 17 Feb '14

17 Feb '14

Hi all, little strange question, but maybe somebody can give me the right direction... We have 2 encoding servers, just with Ubuntu, a Blackmagic Decklink and FFmpeg, which provide a very stable and HQ stream to our CDN Provider. (nice to know for the ffmpeg community: Teradek, miniCaster, Teracue and even the Digital Rapids streamer are no match against the quality in low bitrates of ffmpeg / x264 encoder on a 'simple' Intel I7 system :-) But back to my question, we need (by law) to record a legal-feed of our broadcast and store this for 21 days. With the following example it was no problem to let our two encoding servers store this legal-feeds. http://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs#Duplicateoutputs BUT is there (maybe) a way that output A (the stream) keeps streaming, while output B (the file / legal-feed) starts at midnight in a new file. I hope to do some kind of file-rotation like log files while the the stream keeps going on without a glitch and of course would it be nice the encoding would be done onces! Kind regards! Ed

3 4

webm muxer (-f webm) seems slow
by Jun Jie Pang 16 Feb '14

16 Feb '14

Hi all, I am serving my video(x11grab encoded into webm) via HTTP on a nodejs server, piping to the client. It seems that the muxer (-f webm) is delaying my video. There is a 1-2 second delay... Even on local machine. Is there anyway that I might be able to speed it up ? Thank You Regards Pang Jun Jie

2 7

Upscaling: easy to decode & high quality
by Grant 15 Feb '14

15 Feb '14

My video driver (omapfb on ARM) doesn't support scaling so I'm pre-upscaling with ffmpeg for fullscreen playback. My goals are high quality and ease of decoding. ffmpeg -i input.mp4 -filter:v scale=1360:-1 -sws_flags spline -c:a copy output.mkv I'm told I should encode as H.264 CAVLC with inloop filter disabled and CABAC disabled with a crf-value for constant-quality. Is there an "easy to decode" preset including these? Any other high quality video settings I should use? I don't want to touch audio at all, including resampling with the same quality settings. - Grant

2 1

Scaling up is pixelated
by Grant 15 Feb '14

15 Feb '14

My video drivers (omapfb) don't support scaling so I'm prescaling with ffmpeg: ffmpeg -i sample1.mp4 -filter:v scale=1360:-1 -sws_flags lanczos -c:a copy sample2.mp4 The resultant file is very pixelated. It makes sense that scaling up would result in pixelation, but how do hardware scalers avoid this? - Grant

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Can I do scaling better?
by csparker247 14 Feb '14

14 Feb '14

I have a shell script for batch encoding that needs to work on a variety of media (HD, SD, anamorphic). I crafted a scale cmd that converts everything to square pixels and limits output videos to 1920x1080, but never scales higher than the input resolution. It looks like this: -vf "scale=iw*sar:ih, scale='if(gt(iw,ih),min(1920,iw),-1)':'if(gt(iw,ih),-1,min(1080,ih))'" The first scale is the conversion to square pixels. The second scale checks whether the video is wider than it is tall. If it is, it sets the width to the smallest value between 1920 and the internal width, and height is proportional to that. If it's taller than it is wide, it sets the height to the minimum between 1080 and the internal height, and width is proportional to that. But that command line looks like nonsense and I have issues with anamorphic SD sources getting values not divisible by two. Is there a better way for me to accomplish the same thing AND end up with even pixel dimensions? -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Can-I-do-scaling-better-tp4663866.… Sent from the FFmpeg-users mailing list archive at Nabble.com.

4 7

ffmpeg playback of unusual MPEG-4 layer 2 format video
by Ed Torbett 14 Feb '14

14 Feb '14

Hi all, I'm currently implementing a custom I/O context to receive a live video stream from a Siemens digital video recorder. I'm able to do all the necessary handshaking etc, so I get access to a raw MPEG4 layer 2 stream that I can pass to ffmpeg. The link to the attached clip is a dump of exactly what is passed to ffmpeg. The stream plays perfectly in Siemens' own client, but ffmpeg looks like it has an issue handling the intra frames, although no errors are reported until the end of the file. I'm not sure if this is because the stream has been altered in some way to make it unplayable in any other player, or due to a decoding issue in ffmpeg. Can anyone shed some light on this issue? Link to sample demonstrating the issue: https://www.dropbox.com/s/lg4tes2m9hpidu2/unusual-intra-frames.dat Link to wireshark trace of the full communications between the Siemens client and the DVR (for comparison): https://www.dropbox.com/s/n6dnerc12bn6ico/wireshark_trace_of_client.pcapng Full, uncut console output below: [etorbett@ssl26 ~]$ ffplay -v 9 -loglevel 99 siemensData0.dat ffplay version N-54178-gbbe26ef Copyright (c) 2003-2013 the FFmpeg developers built on Jun 24 2013 17:34:56 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-51) configuration: --enable-gpl --enable-libvorbis --enable-libx264 libavutil 52. 37.101 / 52. 37.101 libavcodec 55. 17.100 / 55. 17.100 libavformat 55. 9.100 / 55. 9.100 libavdevice 55. 2.100 / 55. 2.100 libavfilter 3. 77.101 / 3. 77.101 libswscale 2. 3.100 / 2. 3.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 3.100 / 52. 3.100 Format m4v probed with size=65536 and score=500KB sq= 0B f=0/0 [m4v @ 0x9b577c0] File position before avformat_find_stream_info() is 0 [m4v @ 0x9b577c0] All info found [m4v @ 0x9b577c0] File position after avformat_find_stream_info() is 344064 Input #0, m4v, from 'siemensData0.dat': Duration: N/A, start: 0.040000, bitrate: N/A Stream #0:0, 22, 1/1200000: Video: mpeg4 (Simple Profile), yuv420p, 336x272 [SAR 1:1 DAR 21:17], 1/30000, 25 tbr, 1200k tbn, 30k tbc detected 2 logical cores Video frame changed from size:0x0 format:none serial:-1 to size:336x272 format:yuv420p serial:1 [ffplay_buffer @ 0x9cba560] Setting 'video_size' to value '336x272' [ffplay_buffer @ 0x9cba560] Setting 'pix_fmt' to value '0' [ffplay_buffer @ 0x9cba560] Setting 'time_base' to value '1/1200000' [ffplay_buffer @ 0x9cba560] Setting 'pixel_aspect' to value '1/1' [ffplay_buffer @ 0x9cba560] Setting 'frame_rate' to value '25/1' [ffplay_buffer @ 0x9cba560] w:336 h:272 pixfmt:yuv420p tb:1/1200000 fr:25/1 sar:1/1 sws_param: [ffplay_crop @ 0x9d20920] Setting 'out_w' to value 'floor(in_w/2)*2' [ffplay_crop @ 0x9d20920] Setting 'out_h' to value 'floor(in_h/2)*2' [AVFilterGraph @ 0x9c2dfa0] query_formats: 3 queried, 2 merged, 0 already done, 0 delayed [ffplay_crop @ 0x9d20920] w:336 h:272 sar:1/1 -> w:336 h:272 sar:1/1 ac-tex damaged at 7 2d= 0 aq= 0KB vq= 1KB sq= 0B f=0/0 [mpeg4 @ 0x9b5b400] Error at MB: 51 [mpeg4 @ 0x9b5b400] concealing 357 DC, 357 AC, 357 MV errors in P frame Statistics: 1646975 bytes read, 0 seeksvq= 0KB sq= 0B f=0/0 -- Edward Torbett BSc(Hons) MBCS Principal Software Engineer SSL Highway Control Systems Unit 12, Market Industrial Estate, Yatton, Bristol BS49 4RF Tel: + 44 (0)1934 839036 Switchboard: + 44 (0)1934 838803 Email: ed.torbett(a)simulation-systems.co.uk Web: http://www.simulation-systems.co.uk

2 2

Compiling FFMPEG 2.0+ for Android platform
by Dharmesh Chauhan 14 Feb '14

14 Feb '14

Hello All, I have been trying to add image overlay on video, so that overlay image gets displayed for particular timeframe only. By following the instructions from following link I am able to do overlay video with image such overlaid image is displayed for entire video running length. http://ffmpeg.gusari.org/viewtopic.php?f=8&t=1181 FFMPEG Command Used: /data/data/com.example.test/lib/libffmpeg.so -i /storage/sdcard0/e.mp4 -i /storage/sdcard0/a.png -filter_complex [0:v][1:v]overlay=10:10 -codec:a copy /storage/sdcard0/testFFmpeg/cle3far.3gp However I need to overlay image for particular time interval of video. So I tried following command but it didn’t work. FFMPEG Command that didn’t work: /data/data/com.example.test/lib/libffmpeg.so -i /storage/sdcard0/e.mp4 -i /storage/sdcard0/a.png -filter_complex [0:v][1:v]overlay=10:10:enable=between(t\,0\,30) -codec:a copy /storage/sdcard0/testFFmpeg/cle3far.3gp Error Message: Key ‘enable’ not found. ShelloutError initializing filter 'overlay' with args '10:10:enable=between(t,0,30)' ShelloutError configuring filters. By googling, I was able to find that I need FFMPEG 2.0, so I tried creating new ffmpeg library by following http://vec.io/posts/how-to-build-ffmpeg-with-android-ndk, but it didn’t work either. It would be great if someone can get me anything from following. 1. Android precompiled library for FFMPEG 2.0+ (libffmpeg.so) OR 2. Way to do image overlay without FFMPEG http://superuser.com/questions/713498/how-to-show-overlay-image-in-a-certai… http://vec.io/posts/how-to-build-ffmpeg-with-android-ndk http://ffmpeg.gusari.org/viewtopic.php?f=8&t=1181 Thanks and Regards, Dharmesh Chauhan

1 0

-Preset Ultrafast (and my email) not working
by Alek 14 Feb '14

14 Feb '14

Ok....this should work better now. I'm converting some .MTS files into DVD-mpeg files. Here's the code I use- ffmpeg -i InputFileName.MTS -preset ultrafast -deinterlace -target ntsc-dvd OutputFilename.mpeg In the past the -preset ultrafast worked fine (at least I'm pretty sure I used it) but now for some reason it doesn't. Maybe I'm wrong....it has been a while. Any ideas how to solve it? Here's the Terminal output- Alek$ ffmpeg -i 00000.MTS -preset ultrafast -deinterlace -target ntsc-dvd WOOF.mpeg ffmpeg version git-2013-12-17-fca7943 Copyright (c) 2000-2013 the FFmpeg developers built on Dec 17 2013 10:30:22 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/home/kids/ffmpeg_build --extra-cflags=-I/home/kids/ffmpeg_build/include --extra-ldflags=-L/home/kids/ffmpeg_build/lib --bindir=/home/kids/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab libavutil 53. 0.100 / 53. 0.100 libavcodec 55. 45.101 / 55. 45.101 libavformat 55. 22.100 / 55. 22.100 libavdevice 55. 5.102 / 55. 5.102 libavfilter 4. 0.100 / 4. 0.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 Input #0, mpegts, from '00000.MTS': Duration: 00:00:20.51, start: 1.033367, bitrate: 22582 kb/s Program 1 Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Codec AVOption preset (Set the encoding preset (cf. x264 --fullhelp)) specified for output file #0 (WOOF.mpeg) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

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Test message- ignore
by Alek 14 Feb '14

14 Feb '14

I'm converting some .MTS files into DVD-mpeg files. Here's the code I use- ffmpeg -i InputFileName.MTS -preset ultrafast -deinterlace -target ntsc-dvd OutputFilename.mpeg In the past the -preset ultrafast worked fine (at least I'm pretty sure I used it) but now for some reason it doesn't. Maybe I'm wrong....it has been a while. Any ideas how to solve it? Here's the Terminal output- Alek$ ffmpeg -i 00000.MTS -preset ultrafast -deinterlace -target ntsc-dvd WOOF.mpeg ffmpeg version git-2013-12-17-fca7943 Copyright (c) 2000-2013 the FFmpeg developers built on Dec 17 2013 10:30:22 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/home/kids/ffmpeg_build --extra-cflags=-I/home/kids/ffmpeg_build/include --extra-ldflags=-L/home/kids/ffmpeg_build/lib --bindir=/home/kids/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab libavutil 53. 0.100 / 53. 0.100 libavcodec 55. 45.101 / 55. 45.101 libavformat 55. 22.100 / 55. 22.100 libavdevice 55. 5.102 / 55. 5.102 libavfilter 4. 0.100 / 4. 0.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 Input #0, mpegts, from '00000.MTS': Duration: 00:00:20.51, start: 1.033367, bitrate: 22582 kb/s Program 1 Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Codec AVOption preset (Set the encoding preset (cf. x264 --fullhelp)) specified for output file #0 (WOOF.mpeg) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

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-preset ultrafast not working?
by Alek 14 Feb '14

14 Feb '14

3 6