June 2010 - ffmpeg-user - lists.ffmpeg.org

Using video card chipset to encode.
by drgkill＠gmail.com 10 Aug '11

10 Aug '11

Dear FFmpeg team, Your soft is really great, I use it every day, but with the announcement of Badabom from Nvidia, I was asking myself if FFmpeg will handle the GPU to encode videos. They are announcing (Nvidia, AMD) 2x real time encoding rates (for more details, codec, video size, etc, see : http://www.youtube.com/watch?v=8C_Pj1Ep4nw) It's about 6 to 10 time faster than with my Xeon quad core. So I was wondering if FFmeg plan to implement that kind of code. Thanks by advance. Guillaume S.

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Reading RTSP from Axis cameras via FFMPEG
by stas.oskin＠gmail.com 10 Jun '11

10 Jun '11

Hi. I'm trying to read video from Axis camera via ffmpeg and ffplay. The use link goes like this: rtsp://192.168.253.201:554/mpeg4/media.amp The video starts fine, but then immediately breaks to parts. ffmpeg/ffplay start to throw the following errors: [mpeg4 @ 0x1a350400]concealing 661 DC, 661 AC, 661 MV errors [mpeg4 @ 0x1a350400]slice end not reached but screenspace end (44419 left 6CC8BD, score= -262) [mpeg4 @ 0x1a350400]concealing 690 DC, 690 AC, 690 MV errors [mpeg4 @ 0x1a350400]slice end not reached but screenspace end (12453 left 7E1653, score= -263) [mpeg4 @ 0x1a350400]concealing 690 DC, 690 AC, 690 MV errors [mpeg4 @ 0x1a350400]1. marker bit missing in 3. esc [mpeg4 @ 0x1a350400]Error at MB: 206 [mpeg4 @ 0x1a350400]concealing 539 DC, 539 AC, 539 MV errors [mpeg4 @ 0x1a350400]slice end not reached but screenspace end (11108 left 7091E5, score= -268) [mpeg4 @ 0x1a350400]concealing 690 DC, 690 AC, 690 MV errors [mpeg4 @ 0x1a350400]I cbpy damaged at 18 9 [mpeg4 @ 0x1a350400]Error at MB: 297 [mpeg4 @ 0x1a350400]concealing 451 DC, 451 AC, 451 MV errors [mpeg4 @ 0x1a350400]slice end not reached but screenspace end (11107 left 6CF4B6, score= -275) [mpeg4 @ 0x1a350400]concealing 690 DC, 690 AC, 690 MV errors [mpeg4 @ 0x1a350400]slice end not reached but screenspace end (11110 left 7C5C0C, score= -279) [mpeg4 @ 0x1a350400]concealing 690 DC, 690 AC, 690 MV errors VLC, when connecting to same link, works just fine. Any idea what happens? Thanks!

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m2ts to DNxHD convert
by luismanolo＠gmail.com 24 Apr '11

24 Apr '11

Hello. Sorry about my english. I`m a new user of ffmpeg, and I have a sony hd camera. And I want to convert the MTS files of my camera to the codec of Apple Pro Res called dnxhd. I know that this codecs are supported for ffmpeg but I don`t know command to convert the video. I`m a ubuntu linux user. And I use cinelerra to edit the files. Many Thanks. -- http://vimeo.com/luismanolo http://delasonsierra.blogspot.com http://www.logrobomberos.com

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[FFMPEG Crash] Can't read a H.264 video on android compiled with NEON
by nmivielle＠betomorrow.com 15 Nov '10

15 Nov '10

Hi, I try to compile FFmpeg for Android device with NEON activated. When I try to read an MP4 with H.264 video codec with this command line : ./ffmpeg -i myvideo.mp4 I have this error : [1] + Stopped (signal) And : [1] Segmentation fault I try to compile FFmpeg for iPhone with the same options and I don't have the same problem, everything is perfect. Is there a clue to solve my problem that seems to be very specific to Android compilation? When I try to debug why there is a segmentation fault it return a fault in this function : ff_vector_fmul_window_neon in dsputil_neon.S Why it works for iPhone and not on Android? I?m not sure that is a problem with the H.264 codec but, it appears only when I try to read this type of codec. It works well with others codec (MPEG-2,FLV,H.263?) Anyone has an idea to solve this problem? Thank you. Nicolas. Here is my debug stack : ffmpeg rev.23512 subject : I am trying to read an MPEG-4/H.264 video on an Android Phone. problem : ffmpeg crashed (Segmentation Fault) on Motorola Milestone Android 2.1 (reproduced on Nexus One) command line : ffmpeg -i h264video.mp4 output : $ ./ffmpeg -v 9 -loglevel 99 -i miley.mp4 ./ffmpeg -v 9 -loglevel 99 -i miley.mp4 FFmpeg version SVN-r23512, Copyright (c) 2000-2010 the FFmpeg developers built on Jun 7 2010 15:39:04 with gcc 4.4.0 configuration: --target-os=linux --cross-prefix=arm-eabi- --arch=arm --enable- neon --cpu=cortex-a8 --enable-sram --enable-pic --enable-armv5te --enable-armv6 --enable-armv6t2 --enable-armvfp --disable-yasm --enable-iwmmxt --enable-pthread s --disable-mmx --disable-mmx2 --disable-amd3dnow --disable-amd3dnowext --disabl e-sse --disable-ssse3 --soname-prefix=/data/local/lib/ --prefix=../build/ffmpeg --enable-static --disable-stripping --enable-debug --extra-cflags='-I/home/sonic /android-ndk/build/platforms/android-5/arch-arm/usr/include -march=armv7-a -mflo at-abi=softfp -mfpu=neon -fpic -mthumb-interwork -ffunction-sections -funwind-ta bles -fstack-protector -fno-short-enums -mthumb -O2' --extra-ldflags='-Wl,-dynam ic-linker,/system/bin/linker -nostdlib /home/sonic/android-ndk/build/platforms/a ndroid-5/arch-arm/usr/lib/libc.so /home/sonic/android-ndk/build/platforms/androi d-5/arch-arm/usr/lib/libm.so -Wl,-rpath-link=/home/sonic/android-ndk/build/platf orms/android-5/arch-arm/usr/lib -L/home/sonic/android-ndk/build/prebuilt/linux-x 86/arm-eabi-4.4.0/lib/gcc/arm-eabi/4.4.0' --extra-exe-ldflags='/home/sonic/andro id-ndk/build/platforms/android-5/arch-arm/usr/lib/crtbegin_dynamic.o /home/sonic /android-ndk/build/platforms/android-5/arch-arm/usr/lib/crtend_android.o' --extr a-libs=-lgcc libavutil 50.18. 0 / 50.18. 0 libavcodec 52.74. 1 / 52.74. 1 libavformat 52.68. 0 / 52.68. 0 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.20. 0 / 1.20. 0 libswscale 0.11. 0 / 0.11. 0 [NULL @ 0xab0cb0]Probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0xab0cb0]ISO: File Type Major Brand: isom [h264 @ 0xaba0b0]no picture [1] + Stopped (signal) ./ffmpeg -v 9 -loglevel 99 -i miley.mp4 $ [1] Segmentation fault ./ffmpeg -v 9 -loglevel 99 -i miley.mp4 $ gdb output : Program received signal SIGSEGV, Segmentation fault. ff_vector_fmul_window_neon () at libavcodec/arm/dsputil_neon.S:811 811 libavcodec/arm/dsputil_neon.S: No such file or directory. in libavcodec/arm/dsputil_neon.S Current language: auto; currently asm (gdb) bt result : (gdb) bt bt #0 ff_vector_fmul_window_neon () at libavcodec/arm/dsputil_neon.S:811 #1 0xfffda75c in ?? () #2 0xfffda75c in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) disass result : (gdb) disass $pc-32 $pc+32 disass $pc-32 $pc+32 Dump of assembler code from 0x3be174 to 0x3be1b4: 0x003be174 <ff_vector_fmul_window_neon+80>: vrev64.32 q1, q1 0x003be178 <ff_vector_fmul_window_neon+84>: vmla.f32 d21, d1, d6 0x003be17c <ff_vector_fmul_window_neon+88>: beq 0x3be1bc <ff_vector_fmul _window_neon+152> 0x003be180 <ff_vector_fmul_window_neon+92>: vmla.f32 d22, d3, d7 0x003be184 <ff_vector_fmul_window_neon+96>: vld1.64 {d0-d1}, [r1, :128]! 0x003be188 <ff_vector_fmul_window_neon+100>: vmla.f32 d23, d2, d6 0x003be18c <ff_vector_fmul_window_neon+104>: vld1.64 {d18-d19}, [r2, :128], r 5 0x003be190 <ff_vector_fmul_window_neon+108>: vmls.f32 d20, d3, d4 0x003be194 <ff_vector_fmul_window_neon+112>: vld1.64 {d24-d25}, [r3, :128]! 0x003be198 <ff_vector_fmul_window_neon+116>: vmls.f32 d21, d2, d5 0x003be19c <ff_vector_fmul_window_neon+120>: vld1.64 {d6-d7}, [r4, :128], r5 0x003be1a0 <ff_vector_fmul_window_neon+124>: vorr q1, q9, q9 0x003be1a4 <ff_vector_fmul_window_neon+128>: vrev64.32 q11, q11 0x003be1a8 <ff_vector_fmul_window_neon+132>: vorr q2, q12, q12 0x003be1ac <ff_vector_fmul_window_neon+136>: vswp d22, d23 0x003be1b0 <ff_vector_fmul_window_neon+140>: vst1.64 {d20-d21}, [r0, :128]! End of assembler dump. output registers : (gdb) info all-registers info all-registers r0 0x401797b0 1075287984 r1 0x401787d0 1075283920 r2 0xa1d090 10604688 r3 0xaf3000 11481088 r4 0x9c6ad0 10250960 r5 0xfffffff0 4294967280 r6 0x4 4 r7 0x400e2530 1074668848 r8 0xaa7960 11172192 r9 0xab2de0 11218400 r10 0xa5de70 10870384 r11 0x400e3530 1074672944 r12 0x4004d2a0 1074057888 sp 0xbed473cc 0xbed473cc lr 0xfffda75c 4294813532 pc 0x3be194 0x3be194 <ff_vector_fmul_window_neon+112> f0 0 (raw 0x000000000000000000000000) f1 0 (raw 0x000000000000000000000000) f2 0 (raw 0x000000000000000000000000) f3 0 (raw 0x000000000000000000000000) f4 0 (raw 0x000000000000000000000000) f5 0 (raw 0x000000000000000000000000) f6 0 (raw 0x000000000000000000000000) f7 0 (raw 0x000000000000000000000000) fps 0x0 0 cpsr 0xa0000050 2684354640 (gdb)

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Assertion and crash in MKV
by dennis.volodomanov＠conceiva.com 25 Oct '10

25 Oct '10

Hello, I've got the following error - FFmpeg version git-6a1265c, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-gpl --enable-shared --disable-static --enable-memalign-hack --enable-libmp3lame --extra-cflags=-I/c/msys/local/include --extra-ldflags=-L/c/msys/local/lib --enable-swscale --extra-cflags=-fno-common libavutil 49.12. 0 / 49.12. 0 libavcodec 52.10. 0 / 52.10. 0 libavformat 52.23. 1 / 52.23. 1 libavdevice 52. 1. 0 / 52. 1. 0 libswscale 0. 6. 1 / 0. 6. 1 built on Jan 8 2009 11:01:43, gcc: 4.2.1-sjlj (mingw32-2) Assertion failed: s->chapters[i]->start <= s->chapters[i+1]->start, file libavformat/utils.c, line 1968 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Should I submit a bug report or is this a known issue? It's an MKV file. Thanks, Dennis

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Transcoding H.265/MP4 RTSP stream to Copy/MPEGTS
by martinhering＠mac.com 10 Sep '10

10 Sep '10

Hi, I like to transcode an MP4 file I get via rtsp directly to an Mpeg-TS with video and audio streams copied. I can do this by first writing an mp4 to disk and transcode this mp4 to mpegts, but it is impossible to transcode from mp4-rtsp directory to an mpegts file. As far as I see it is that the bitstream converter 'h264_mp4toannexb' is not compatible with rtsp streams. Example: ./ffmpeg -i "rtsp://ondemand.quicktime.zdf.newmedia.nacamar.net/zdf/data/quicktime/zdf/1…" -vcodec copy -acodec copy -f mpegts -vbsf h264_mp4toannexb /test.ts gives the following result: FFmpeg version SVN-r22822, Copyright (c) 2000-2010 the FFmpeg developers built on Apr 8 2010 13:29:07 with gcc 4.2.1 (Apple Inc. build 5659) configuration: --disable-ffplay --disable-ffprobe --disable-ffserver libavutil 50.14. 0 / 50.14. 0 libavcodec 52.66. 0 / 52.66. 0 libavformat 52.61. 0 / 52.61. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0.10. 0 / 0.10. 0 [NULL @ 0x101010000]non-existing PPS referenced Last message repeated 20 times [rtsp @ 0x10100b000]Estimating duration from bitrate, this may be inaccurate Seems stream 0 codec frame rate differs from container frame rate: 90000.00 (90000/1) -> 25.00 (25/1) Input #0, rtsp, from 'rtsp://ondemand.quicktime.zdf.newmedia.nacamar.net/zdf/data/quicktime/zdf/1…': Metadata: title : /zdf/data/quicktime/zdf/10/04/100408_1210_hko_vh.mp4 Duration: 00:01:57.48, start: -815167444.-139000, bitrate: N/A Stream #0.0: Video: h264, yuv420p, 688x384, 25 tbr, 90k tbn, 90k tbc Stream #0.1: Audio: aac, 48000 Hz, stereo, s16 File '/test.ts' already exists. Overwrite ? [y/N] y [mpegts @ 0x10102e800]muxrate 1 bps, pcr every 9000 pkts, sdt every 200, pat/pmt every 40 pkts Output #0, mpegts, to '/test.ts': Metadata: encoder : Lavf52.61.0 Stream #0.0: Video: 0x0000, yuv420p, 688x384, q=2-31, 90k tbn, 90k tbc Stream #0.1: Audio: aac, 48000 Hz, stereo Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 h264_mp4toannexb failed for stream 0, codec copy: Invalid data found when processing input out: stream=0, dts=0, t=1/90000 [mpegts @ 0x10102e800]h264 bitstream malformated, no startcode found, use -vbsf h264_mp4toannexb av_interleaved_write_frame(): Operation not permitted Anybody has some ideas? Best Martin

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MOV timecode tracks - readable?
by dev＠rarevision.com 13 Aug '10

13 Aug '10

Is there any way to read timecode data, or at least get a starting timecode value from QuickTime MOV timecode tracks?

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MPEG Program Streams on iPhone
by tymek.majewski＠cubitech.co.uk 26 Jul '10

26 Jul '10

Hi, "HTTP Live Streaming draft-pantos-http-live-streaming-02" document at http://tools.ietf.org/html/draft-pantos-http-live-streaming-02 implies that iPhone can play MPEG-2 Program Stream files. I tried to use ffmpeg.exe -i c:\h.264\videos\xxx.h264 c:\h.264\tests\yyy.vob and the result file can be played by VLC but not on the iPhone. Does anybody know how to prepare program streams so the iPhone will read them? Thanks Tymek

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ffmpeg is not able to recognize wma format.
by nitin.bodke＠gmail.com 08 Jul '10

08 Jul '10

Hi List, I am trying to convert audio/wma file to auido/3g2 with libaac codec. I am getting "Unknown format" error. Can you please suggest how to get this conversion working? <snip> E:\>E:\Alembik\deploy\ImageMagick-6.5.9-Q16\ffmpeg.exe -i E:\Alembik\deploy\apache-tomcat-5.5.28\webapps\ROOT\storage\alembik\attachments\Audio_3935668D93C54EACB95649179CBD32AC.wma -y -vn -acodec libfaac -ar 16000 -ab 32000 -async 1 E:\Alembik\deploy\apache-tomcat-5.5.28\webapps\ROOT\storage\alembik\N4003\N384424003\tnsc-6357851611060493871.3g2 FFmpeg version SVN-r20906, Copyright (c) 2000-2009 Fabrice Bellard, et al. built on Dec 21 2009 06:01:55 with gcc 4.2.4 configuration: --enable-memalign-hack --prefix=/mingw --cross-prefix=i686-ming w32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686 --cpu=i686 --e nable-avisynth --enable-gpl --enable-version3 --enable-zlib --enable-bzlib --ena ble-libgsm --enable-libfaad --enable-pthreads --enable-libvorbis --enable-libthe ora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libxvid --enable-libschroedinger --enable-libx264 --enable-libopencore_amrwb --enable-li bopencore_amrnb libavutil 50. 7. 0 / 50. 7. 0 libavcodec 52.43. 0 / 52.43. 0 libavformat 52.44. 0 / 52.44. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0. 7. 2 / 0. 7. 2 E:\Alembik\deploy\apache-tomcat-5.5.28\webapps\ROOT\storage\alembik\attachments\ Audio_3935668D93C54EACB95649179CBD32AC.wma: Unknown format <snip> Cheers, Nitin.

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DVD for dummies
by adam＠the-adam.com 08 Jul '10

08 Jul '10

Hi guys, I know bits and pieces of my answer are all over the web and this mailing list, but maybe I can get some help for an FFMPEG novice. I have a bunch of video files, mostly AVI, but also some ASF, DIVX, MOV, MPEG, MP4, and WMV files as well, and I'd like to put them on a DVD to view with my general, consumer DVD player on my TV set. You know, so VIDEO1,AVI, VIDEO2.AVI, VIDEO3.AVI, and VIDEO4.AVI play on my television set that isn't hooked up to my computer network, or maybe for somebody else's DVD and TV. I found ways using packages on Linux (preferred) and Windows XP (a VMware system) to write a video DVD, but it comes out streaming all of the videos into one continuous stream. What I want is a menu to appear when I put the disk in my DVD with a list of videos so I can choose which one to see. I would love to have a command-line way so I can write a script. I think the technical term for a video in such a list is a "title." I would be even happier if I could have jump-ahead "chapters" every 20 or 30 seconds within each title. If Linux tools and command lines can do it, then I'd love a shell-script solution. If there's a GUI-only package, then how do I get the menu at disk startup? I liked Express Burn on Windows XP (in spite of its awful interface) but I can't get a menu mode to work. I figure I can't be the only one who would like to have this. Any ideas? Adam N. Rosenberg mailto:adam at the-adam.com http://www.the-adam.com

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