December 2006 - ffmpeg-user - lists.ffmpeg.org

Apply a 25fps audio to a 23.976 fps video
by gabrielegreco＠gmail.com 01 Dec '06

01 Dec '06

It's possible to do this in one pass with ffmpeg? I've googled around and I've seen a patch that added the option -spc 23976:25000 in one mailing list but it seems it didn't reach the official ffmpeg and I'm not able to find the patch anywhere (the ml archives remove the file attachments). Anyway there is another way to do so without using external program to do it? It will be ok also to change the fps of the video without recoding it. I've tried the following command line to do so but it doesn't work, still produce a not synchronized movie with 23.976fps video and 25fps audio: ffmpeg -i video.avi -i new_audio.mp3 -vcodec copy -r 25 dest.avi -map 0.0: 0.0 -map 1.0:0.1 -- Bye, Gabry

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Poor quality (flashing images etc) from /dev/video
by mike＠redtux.org.uk 01 Dec '06

01 Dec '06

When I try to record from vcr I am getting very bad flashbacks banding etc. lspci -v says 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 741/741GX/M741 Host (rev 03) Subsystem: ASRock Incorporation Unknown device 0741 Flags: bus master, medium devsel, latency 0 Memory at d0000000 (32-bit, non-prefetchable) [size=64M] Capabilities: [c0] AGP version 3.5 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port (virtual PCI-to-PCI bridge) (prog-if 00 [Normal decode]) Flags: bus master, 66MHz, fast devsel, latency 32 Bus: primary=00, secondary=01, subordinate=02, sec-latency=32 Memory behind bridge: cbd00000-cfefffff Prefetchable memory behind bridge: aba00000-cbbfffff 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] (rev 25) Flags: bus master, medium devsel, latency 0 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (prog-if 80 [Master]) Subsystem: ASRock Incorporation Unknown device 5513 Flags: bus master, medium devsel, latency 176 I/O ports at ff00 [size=16] 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0) Subsystem: ASRock Incorporation Unknown device 7012 Flags: bus master, medium devsel, latency 32, IRQ 193 I/O ports at dc00 [size=256] I/O ports at d800 [size=128] Capabilities: [48] Power Management version 2 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) (prog-if 10 [OHCI]) Subsystem: ASRock Incorporation Unknown device 7001 Flags: bus master, medium devsel, latency 32, IRQ 169 Memory at cfffd000 (32-bit, non-prefetchable) [size=4K] 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f) (prog-if 10 [OHCI]) Subsystem: ASRock Incorporation Unknown device 7001 Flags: bus master, medium devsel, latency 32, IRQ 177 Memory at cfffe000 (32-bit, non-prefetchable) [size=4K] 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller (prog-if 20 [EHCI]) Subsystem: ASRock Incorporation Unknown device 7002 Flags: bus master, medium devsel, latency 32, IRQ 185 Memory at cffff000 (32-bit, non-prefetchable) [size=4K] Capabilities: [50] Power Management version 2 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 90) Subsystem: ASRock Incorporation Unknown device 0900 Flags: bus master, medium devsel, latency 32, IRQ 201 I/O ports at d400 [size=256] Memory at cfffc000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at 30000000 [disabled] [size=128K] Capabilities: [40] Power Management version 2 00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) Subsystem: Hauppauge computer works Inc. WinTV Series Flags: bus master, medium devsel, latency 128, IRQ 193 Memory at cbcfe000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 00:0a.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) Subsystem: Hauppauge computer works Inc. WinTV Series Flags: bus master, medium devsel, latency 32, IRQ 193 Memory at cbcff000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 01:00.0 VGA compatible controller: nVidia Corporation NV44A [GeForce 6200] (rev a1) (prog-if 00 [VGA]) Flags: bus master, 66MHz, medium devsel, latency 248, IRQ 209 Memory at ce000000 (32-bit, non-prefetchable) [size=16M] Memory at b0000000 (32-bit, prefetchable) [size=256M] Memory at cd000000 (32-bit, non-prefetchable) [size=16M] Expansion ROM at cfee0000 [disabled] [size=128K] Capabilities: [60] Power Management version 2 Capabilities: [44] AGP version 3.0 Command is ffmpeg -vd /dev/video0 -ad /dev/dsp -sameq -s 352x288 -t 120 -acodec mp2 -ac 2 -ab 64 /tapes/test.avi FFmpeg version SVN-r7184, Copyright (c) 2000-2006 Fabrice Bellard, et al. configuration: --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faadbin --enable-faac --enable-xvid --enable-x264 --enable-a52 --enable-a52bin --enable-dts --enable-pp --enable-shared --enable-amr_nb --enable-pthreads --enable-dc1394 --enable-swscaler --enable-gpl --disable-debug libavutil version: 49.1.0 libavcodec version: 51.25.0 libavformat version: 51.6.0 built on Nov 30 2006 00:10:27, gcc: 4.1.1 20061011 (Red Hat 4.1.1-30) File '/tapes/test.avi' already exists. Overwrite ? [y/N] y [video4linux2 @ 0x228054][4]Capabilities: 5010015 Input #0, video4linux2, from '': Duration: N/A, bitrate: N/A Stream #0.0: Video: rawvideo, yuv420p, 352x288, 30412 kb/s, 25.00 fps(r) Input #1, audio_device, from '': Duration: N/A, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, stereo, 1411 kb/s Output #0, avi, to '/tapes/test.avi': Stream #0.0: Video: mpeg4, yuv420p, 352x288, q=2-31, 200 kb/s, 25.00 fps(c) Stream #0.1: Audio: mp2, 44100 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 3000 q=0.0 Lsize= 60313kB time=120.0 bitrate=4117.4kbits/s video:50192kB audio:938kB global headers:0kB muxing overhead 17.961554% Any help etc

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Quicktime (.mov) Conversion to .FLV Issues
by rcapers＠gmail.com 01 Dec '06

01 Dec '06

Hello, Can anyone tell me why certain quicktime (.mov) formats do not seem to convert to FLV. Do I need to flag --enable-x264 when I complile ffmpeg for Quicktime support? If anyone can let me know what config options I need to focus on to get Quicktime codec support in ffmpeg - I would really appreciate it. Thank you, Ryan

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